Easy Solutions To Hvac That Are Simple To Adhere To

Article by-Ottosen Graves

It's always the hottest or coldest day when your HVAC fails. The more you know on this subject, the easier it will be to find an expert to help you. Keep reading and this will help you do this.

If you want to keep your air conditioning unit running efficiently, make sure you replace or clean the air filter once a month. Check the owner's manual on the a/c for instructions on how to clean the filter. Never run the unit when the filter is removed and let the filter dry before reinstallling it.

Know what work you want done before you select an HVAC contractor. Discussing the problem is simplified if you understand what has happened with the unit. They also won't be able to offer you a quote if they don't have a detailed idea of what you want done. So, you should know this beforehand.

Before you hire anyone to do any work on your HVAC, be sure to get a written estimate which has itemized costs listed on it. This will ensure that comparing one contractor to another will be simple as you can see what one offers that another doesn't, or what price they're charging for the same items.

Whenever possible, try to shade the compressor unit outside. The air that's in a place that is shaded is usually five to six degrees cooler than the surrounding air. Your air conditioning unit will be up to ten percent more efficient if it is properly shaded during the summer months.

To save money on your HVAC system, turn the air conditioning down at night and let your home warm up a bit. To keep yourself cool, use a chilling water-filled pillow to cool down your head and your whole body as a result. This combined with a fan will keep you from overheating while saving on your utility bills.

Manage the heat flow into your home with window coverings to help out your HVAC system. In the warmer months, use drapes, curtains and blinds to block out sunward facing windows to keep heat from building up through the greenhouse effect. Alternatively, make sure that sunlit windows are letting light and warmth in during the colder months.

Keep your condensers free of nearby obstructions. Keep plants, fencing, even bushes back and away from the unit. Two feet is a good minimum distance it should have from anything, including walls, but the more space you give it to breathe, the better it will work and the less likely it will be to fail.




Sears Home Services - 2018 Home and Garden Show Vendor


Sears Home Services can help you repair, improve, and maintain your appliance needs. The Home Services can protect and improve the quality of a customer’s home. Their services are efficient at fixing HVACs, windows, installing roofs, and improving the appearance of exterior angles of a household as well as remodeling kitchens, bathrooms, and cabinets. Their services do extend beyond that and their website lists all appliance services provided. Sears Home Services - 2018 Home and Garden Show Vendor


Make sure that your contractor provides a home assessment. Not every HVAC solution is for everyone. Your home could have special needs for heating and cooling. Your contractor should do a walk around of your space to judge what is best. If they aren't be sure to request one.

Manage the heat flow into your home with window coverings to help out your HVAC system. In the warmer months, use drapes, curtains and blinds to block out sunward facing windows to keep heat from building up through the greenhouse effect. Alternatively, make sure that sunlit windows are letting light and warmth in during the colder months.

To save money on your HVAC system, turn the air conditioning down at night and let your home warm up a bit. To keep yourself cool, use a chilling water-filled pillow to cool down your head and your whole body as a result. This combined with a fan will keep you from overheating while saving on your utility bills.

Always ask for references before you allow anyone to start doing work on your HVAC system. Call several of them to make sure that they are legitimate. https://billingsgazette.com/news/state-and-regional/billings-area-now-has-a-tweeting-trooper-at-montana-highway/article_a0a8a65a-ddcb-55cc-80a3-f3b26fc64d58.html take the word of the contractor when it comes to customer satisfaction and that can prove to be a mistake in the end.

Research the companies that you consider using. Checking with the BBB is a good idea, and so is checking online reviews to see the experiences that other customers have had with a company. Doing all of this will make sure you hire the best company for your HVAC needs.

Consider painting mouse click the up coming webpage of your home in a light color to reflect heat if you live in a hot climate. If your summers are cool, use a dark color to instead heat up your home in the winter. This simple change can end up saving you a lot on your utility bills.

If your home gets hot in the summer and you'd like to use your air conditioner less often, consider a metal roof. It reflects the heat right back up into the sky, allowing your home to gain less heat on sunny days. Since metal roofs are permanent, you'll save on repair and replacement costs also.

Check the licensing of any HVAC company that you plan to hire. Start by making sure they are fully licensed. They should be in compliance with your state's business laws. Good HVAC companies should be fully insured. This is to protect their company, their employees, and their customers should anything happen when they are performing a service at the home of a customer.





Gather the level of experience of the company you are working with. You need to be sure that they're able to do the work and have done it before. Although it is certainly possible for an inexperienced contractor to do the job right, it is best not to flirt with danger.

To reduce the air conditioning's energy cost, close drapes, blinds and shades that cover windows which face the sun. Also, white shades will reflect the heat away from the house, keeping it cooler and saving you money. It is also recommended that you close the vents in rooms that are not used often. This will ensure that you are not spending money cooling less-used rooms.

Be just click the up coming article to choose a contractor who designs your HVAC system themselves. A salesperson is not equipped to get such a job done right. If a project is designed incorrectly, gases from the system can be blown into the house and your family can be made sick or even worse.

If the HVAC contractor assumes a "one size fits all" approach to installing your unit, look elsewhere. In order for the system to be right for your home, the contractor needs to come out, find your air ducts, and generally get a feeling for how your home is laid out. If he or she does not do that, move on.

These tips will help you to keep your HVAC system in great shape for the whole time you live in your home. Print this off and revisit it once a year so that you know what you need to do. The more effort you put into your home, the more benefit you will gain from it.






Need Info Concerning Hvac? Search For Good Tips Right Here!

Content by-Dowling Vance

Have you ever woken up to find that your house feels like an ice box, or returned home from work only to find that your living room is like a sauna? If so, you know the importance of knowing where to turn during HVAC emergencies. The article below is intended to provide useful advice to homeowners everywhere who may find themselves in similar straits.

If you want to keep your air conditioning unit running efficiently, make sure you replace or clean the air filter once a month. Check the owner's manual on the a/c for instructions on how to clean the filter. Never run the unit when the filter is removed and let the filter dry before reinstallling it.

If you want to save money once a new HVAC system is put in place, be sure to pick ENERGY STAR rated products to use. Heating and air sunset heights are very energy efficient so your new system won't cost you a ton when it comes to your utility bills every month, recouping some of your installation costs.

Clean the fan blades and coils prior to summertime. Make sure your power is off before doing more than cleaning, such as working on the unit. If you see debris, get rid of it.

The operation of your HVAC system can be in danger when the tree leaves begin to fall. Clean outdoor units often to remove leaves. When blockages restrict the flow of air to the fan, you could end up with serious issues on your hands.

If you want to pay for less power use, consider installing an HVAC-specific solar panel system. Such an installation harnesses the power of the sun directly for your heating and air conditioning. Don't worry though; you can have a switch put in that automatically connects to the power grid the days there isn't enough sun.

In the winter, wearing layers can save you a ton of money on your utility bill. If you can install a digital thermostat that makes the house cooler when you're asleep and warmer just before you get up, you can see significant savings on your next bill when it arrives.

Occasionally, air conditioners ice up. There are also occasional freezes in the drain line, which are often confused for plumbing leaks. Switch the thermostat to the fan only. If the issue persists, call in help.



https://www.bobvila.com/articles/bathroom-ventilation/ blockquote class="curated_content">

Best Home Automation Systems to control your home with your laptop


Life would be so much easier if everything could be controlled by the Internet – and you can totally do that. If you think home automation systems are only for the rich and famous, you are very mistaken. This kind of a technological system doesn’t just save your time but also lets you keep tabs on anything and everything going on in your home – from one device. From your alarms to your phones to your remotes, control everything in an easy no-fuss way. Here are the best voice-controlled Home Automation Systems for your home that will allow you to exercise control using your Windows laptop. Best Home Automation Systems to control your home with your laptop

To reduce the air conditioning's energy cost, close drapes, blinds and shades that cover windows which face the sun. Also, https://blogfreely.net/rhonda30garry/top-a-c-tricks-for-conserving-money-and-also-time will reflect the heat away from the house, keeping it cooler and saving you money. It is also recommended that you close the vents in rooms that are not used often. This will ensure that you are not spending money cooling less-used rooms.

Make sure your windows and doors are efficient. Make sure that their seals are tight and that they do not allow air to seep in or out. Testing for energy efficiency may be free, if you are interested in hiring a professional to find out.

Use your HVAC system to heat your water for free! In the summer, residual heat pulled out of your house is used to heat water through a geothermal system. This will cool your home while allowing you to save a ton on hot water costs, plus it's environmentally friendly to boot!

Every season inspect the outdoor condenser unit of your HVAC system. Remove any weeds and leaves that may be obstructing air flow to the unit. Hose off the inside and outside of the unit to remove any dirt build up. Cover the motor with plastic bags prior to rinsing the unit so that you do not get it wet.

Put a radiant barrier in your attic and what your HVAC performance improve. This helps block the heat from outside, and will reduce the energy needed for cooling your home during the summer. You may even find that you can use the attic space more effectively.

Think about the air flow coming out of the air conditioner and where you want to place it for maximum comfort. If you have to place it in a corner of your home, be sure you're getting a unit that has air flow coming from a direction that's not facing the wall.

Do you need a new cooling system? There are things you must consider first. Each system has a rating and that rating tells the area that can be effectively temperature controlled. Be sure to choose a slightly too large system over a too small of one.





Before you hire a HVAC contractor, you should find out what their experience is. It is important that you hire someone that has enough background experience to get the work done properly. While someone with less experience might be able to do a great job too, you do not want to take that chance.

To boost your home HVAC's efficiency, install solar screening. It reflects sunlight back outside, stopping it from heating up your home. Your air conditioner will be able to run less in the daytime, and your energy bill will plummet as a result. You can install this on any glass you have, doors or windows.

When talking to a new contractor, he should show you how much money you can save on each unit he has available. He should offer you information on how much it will cost to operate each for a year. You can then compare these numbers to see which is the best bet for your home.

Make sure you wipe up any water that is close to the air intake of the vents of your HVAC system. Clean up any water that is standing around because water can cause mold to easily expand. Some water buildup is normal but if you're picking up water more than once every six months you might have a problem, so contact a HVAC technician.

In order to cool down a warm room and warm up a cool room, install a heat pump. This moves air from room to room without the need for an air conditioner or furnace to get involved. If you have a home which faces the sun at certain times of the day, this can save you a ton of money.

Now you know how to keep your HVAC system in great shape. Never allow it to falter just because you have of of paid attention to maintenance. Use the tips in this article to keep it operating efficiently, and you can avoid coming home to a home that is too cold or too hot.






Easy Solutions To Hvac That Are Easy To Follow

Content by-Dalby Eaton

The HVAC in your home plays a major role in how comfortable you feel. For this reason, it is of the utmost importance to have the best HVAC system possible. This is why you need to know as much about this subject as you can. Here are some helpful tips.


Best Home Automation Systems to control your home with your laptop


Life would be so much easier if everything could be controlled by the Internet – and you can totally do that. If you think home automation systems are only for the rich and famous, you are very mistaken. This kind of a technological system doesn’t just save your time but also lets you keep tabs on anything and everything going on in your home – from one device. From your alarms to your phones to your remotes, control everything in an easy no-fuss way. Here are the best voice-controlled Home Automation Systems for your home that will allow you to exercise control using your Windows laptop. Best Home Automation Systems to control your home with your laptop


Although most people are thinking of their heating systems during the winter months, air conditioning is also important. When installing a new furnace or heating system, make sure the air ducts are also set up to work with your air condition system. Using the ducts for both heating and cooling is the most economical choice.

When you have an outdoor unit, be sure to keep all plants, flowers, shrubs and trees at least two feet from it. Anything that grows inside it, either above the ground or even roots beneath the soil, can block it up and cause it to break. Give it some breathing room.

Turn off visit the up coming article when it becomes cold out. The unit will become damaged if you do not take care of it. This can keep your HVAC running and can save you money on repairs.

You need to lubricate parts of your fan condenser. You'll see that the ports here are closed with a rubber or metal cap. Use SAE 20 oil that is lightweight and detergent free, and put ten drops or fewer into each one. Make sure not to overfill https://www.cnet.com/how-to/how-to-maintain-ice-maker/ .

If you want to turn off your air conditioning at night to save money, consider putting a standing fan next to your bed. http://www.norwalkreflector.com/Business/2018/10/24/We-want-to-protect-the-health-of-the-community can set it to oscillate from your toes to your head, blowing cool air over your body and letting you sleep comfortably all night long.

Service your HVAC unit at least one time a year. During service the technician will check the motor and refill the system fluids. These repairs will keep your HVAC system running smoothly.

Change your air conditioner filter quarterly, or four times a year. This not only keeps the air coming into your home easier and cleaner to breathe, it takes a lot of stress off of your AC unit itself. You get to enjoy health, money savings and reduced energy use altogether at once.





Consider all of your alternatives before installing a central air conditioner. You can only cool certain rooms, use whole-house fans, or even make use of a geothermal system. The more efficient the system you set up, the less you'll spend on utility bills over time as you use it.

Manage the heat flow into your home with window coverings to help out your HVAC system. In the warmer months, use drapes, curtains and blinds to block out sunward facing windows to keep heat from building up through the greenhouse effect. Alternatively, make sure that sunlit windows are letting light and warmth in during the colder months.

Consider window air conditioners for your home if you are thinking about installing a central unit. Do you really need to cool your kitchen overnight? Do you have multiple floors with only one housing bedrooms? To efficiently and cheaply cool only where people are actually staying, window units are a great choice.

When you are looking to buy a new air conditioner, consider your climate. If you live in a hot, dry area, then an evaporative cooler will be your best bet. If you live in a humid area, opt for a compressor-style unit as it's the only one which will work.

If your home gets hot in the summer and you'd like to use your air conditioner less often, consider a metal roof. It reflects the heat right back up into the sky, allowing your home to gain less heat on sunny days. Since metal roofs are permanent, you'll save on repair and replacement costs also.

Want to save the most you can with your HVAC unit? Consider increasing your room temperature by a single degree or two. Each degree means money that stays in your pocket. In fact some estimate that each degree you move up can work out to be around 9% in overall energy savings.

Never hire anyone to work on your HVAC system unless they are licensed and bonded. This industry is one where mistakes happen often and you want to make sure that you are protected. You do not want to be stuck paying for medical bills that are more expensive than the work you were having done.

Ask for quotes from multiple contractors. If you make a few calls before you decide, it can result in great savings. Get in touch with more than a few contractors to best understand the going rate.

Choose a contractor who knows how to work with your current system. If they work with that set-up frequently, they'll quickly diagnose any problems and know exactly how to maintain it. Choosing such a firm will save you time and money, and will also save you from unnecessary headaches.

Consider a digital window air conditioner with a remote to make use easy as pie. These often come with a thermostat in the remote, turning off the unit when the air near the remote is cool enough. Place the remote on the other side of the room so that the whole area cools down.

If you feel like you are spending too much money on your heating and cooling, there is a simple way to reduce this cost. Raise or lower the temperature depending on the season. A single degree in temperature change can equate to almost a nine percent savings in cooling and heating costs.

When you have a short list of contractors to consider, ask the people on their reference list about not only the service they received, but also how well the system is still running. Did they need more work down the road? Has the company come back to make things right?

Dealing with a broken HVAC system is a nightmare every homeowner dreads. That said, a bit of knowledge goes a long way. Use the information in this article to assist you with your HVAC maintenance.






What You Need To Find Out Prior To Calling An A/C Tech For Help

Article created by-Donovan Graves

HVAC is something to look into if you're a homeowner or if you know someone that is. This is important so that you can be sure the heating and air systems are always working properly. Here are some pieces of advice about all of this to get you started with this subject.

Ask for referrals when hiring someone to install your HVAC system. Someone may seem like they know what they are doing, but you cannot simply take their word for it. You should be able to call past customers to get an idea of what to expect from this particular installer.

Make sure you ask for an estimate in writing before choosing a specific HVAC vendor. There are a lot of moving pieces when it comes to purchasing these big items. You'll want to compare not only the cost of the equipment, but also the set up and the overall energy costs.

One of the most important things to consider when purchasing a new heating and cooling system is the manufacturer's warranty. Units come with a variety of warranties. Choose one with a long warranty for maximum long term savings. Generally, it is advised that homeowners should purchase the extended warranty if one is offered.

If at all possible, install double-paned windows in your home instead of those with a single pane. Double pane windows help minimize your air conditioning use in the summer by keeping the cooler air inside your home. They help in the winter, too, keeping the heat in.

Ask for references and be sure to call them as well. You are dealing with a high ticket item here, so you'll want to do your due diligence to make sure you are getting the best for your money. Ask for references, but don't stop there. Call each reference to check. A lot of people don't take that important last step.

Try to have your HVAC system looked at every year, because regular maintenance will go a long way in energy efficiency. This inspection will ensure that your unit is working efficiently, including a freon level and motor check, and oiling moving parts. This maintenance means that your system will operate optimally.

Check out how long the HVAV contractor you are considering has been in business. Established companies that are doing well will usually be the best ones to go with. It's a risk to hire a new one.




Is it time to replace your greenhouse heating system? - Greenhouse Management


Heating system technology is continually evolving with new products coming on the market each year. With fuel prices changing frequently, growers need to evaluate the many options available before making a decision on purchasing new or upgrading existing equipment. Is it time to replace your greenhouse heating system? - Greenhouse Management


To keep your system running smoothly have your system serviced once a year. During this service visit, they will inspect the motor of the system, oil the moving parts and check the freon levels in the system. navigate to this site of these little jobs will add up to big savings in energy use, with the improved efficiency.

Whether you have an air conditioner in a window or outside your home, be sure to keep it in the shade. The cooler the air around it, and the cooler the condenser itself, the easier a time it will have of keeping the air inside your home cool as well.

The energy efficiency of a unit should be taken into consideration when purchasing a new heating and cooling system. Although you should be concerned about the price of a unit, the efficiency of the unit will save you thousands over the lifetime of the heating and cooling system and should weigh heavily on your buying decision.

Every month clean out the leaves and debris that may have settled into your outdoor HVAC unit. You'll be surprised at how much gets caught in your unit. Over time these leaves can build up and create issues for your system. Just this little clean up can save you a lot of money in maintenance bills.

Your doors and windows need to be as efficient as the HVAC system you use. Make certain they have tight seals to keep air inside. A good professional can test this for you, and they might even do it for free.

Learn the rules and regulations regarding licenses and insurance before hiring an HVAC professional. This way you can check to make sure that any contractor you consider hiring meets any requirements. This can prevent a costly legal process, especially in case of an accident on site. Without insurance, you could be held liable for damages.

Check in on the references for your contractor. Talk to New ac system elk grove to find out if they were pleased with the service they received. References ensure you don't end up with a scammer.

The biggest step to preventing problems in your air conditioner is getting a professional tune-up once a year. This is especially important before the summer. This is when your air conditioning system will be working its hardest. Getting regular tune-ups reduces the risk of malfunctions and will keep you cool all summer long.





Installing a whole-house fan can either cool your home without the use of air conditioning or make your air conditioner more efficient. It blows out all of the hot air which collects in your attic, and this air flow draws in cool air from your basement and up into your home.

When you have a short list of contractors to consider, ask the people on their reference list about not only the service they received, but also how well the system is still running. Did they need more work down the road? Has the company come back to make things right?

When looking for an HVAC company, find one that is available when you need them. Reliable companies can be reached easily at any time. This includes both day and night. A prospective company should also values your resources and time. They should be able to schedule service calls at your earliest convenience.

Make sure that you read any work contracts thoroughly before you sign them. Unfortunately, there are contractors out there that will take advantage of others and sneak things in that will benefit them. The only way you can avoid becoming a victim is to be totally clear about what you are signing.

A great HVAC can truly keep your home the best place to be year round. https://www.rd.com/advice/travel/airplane-travel-mistakes/ have shown you have to maintain that system so that you are always comfortable. Be sure to make use of what you have learned so that you can enjoy your home every single day.






Learn What You Need To Know Now Concerning Purchasing The Most Effective HEATING AND COOLING Equipment

Content author-Horne Sanchez

Not all homeowners are expert HVAC specialists. This can make it hard to choose a good HVAC system or to deal with problems to your existing system. Luckily, https://www.townandcountrymag.com/leisure/a27379999/patricia-altschuls-very-specific-guide-to-traveling-in-style/ following tips can assist homeowners in finding great HVAC contractors.


How to improve the air quality in your home


It always pays to be considerate of neighbours, especially when living in a high-density environment. Many heritage residences are located in heavily populated inner city neighbourhoods, where people living next door can be easily bothered by noise. Rattling air conditioning systems can be top culprits when it comes to disturbing the peace. How to improve the air quality in your home


When you have an outdoor unit, be sure to keep all plants, flowers, shrubs and trees at least two feet from it. Anything that grows inside it, either above the ground or even roots beneath the soil, can block it up and cause it to break. Give it some breathing room.

Get https://facilityexecutive.com/2017/10/commercial-kitchen-fires-4-tips-reduce-risk/ with an HVAC contractor in writing. Some contractors try to skip over this step and charge customers a fortune. If you have a certain price and warranty in writing, they cannot go back and change this information. If they do, they could have a lawsuit on their hands.

Your HVAC system should be checked a few times a year. It's best to have it checked before you turn it on for the summer and again for the winter. Even if everything seems okay, it doesn't hurt to check things out.

When choosing the area for placing an outdoor compressor device, place it in a shady area. In this way, it will be cooling air that is already somewhat cooled. This saves energy.

If you currently have a manual thermostat, consider installing a programmable one. You can set your system for different temperatures depending on time of day and if anyone is home. Also, you can set upper and lower temperature settings to allow for a comfortable range of temperatures so that heating and cooling don't kick in when not needed.

If http://evon60clemencia.iktogo.com/post/easy-solutions-to-hvac-that-are-basic-to-follow , found inside your home, becomes dirty, your unit will lose efficiency. Just pop off the front panel of the furnace and check to see that the coil is dry. Using a brush attachment on a vacuum, gently clean the coil of any dust or other debris.

To save money on your HVAC system, turn the air conditioning down at night and let your home warm up a bit. To keep yourself cool, use a chilling water-filled pillow to cool down your head and your whole body as a result. This combined with a fan will keep you from overheating while saving on your utility bills.





If you are uncertain about which HVAC contractor to call when you experience an equipment failure, take the time to ask friends and family for personal recommendations. By doing this, you will be able to feel more confident about the choice you make, because you will have gotten the opinions of people you already know to be trustworthy.

If you are thinking of installing a new roof and want it to also boost the efficiency of your HVAC, choose white materials. They reflect the sun's heat so that your attic doesn't get hot, and that means your air conditioner doesn't have to labor as hard to cool your home.

If you can, find a way to create shade over your outdoor HVAC unit. This can actually save you money as shaded air being pulled in by the HVAC unit is typically 5 to 6 degrees cooler than air that's heated by direct sunlight. It's a smart solution to lowering those energy bills.

The energy efficiency of a unit should be taken into consideration when purchasing a new heating and cooling system. Although you should be concerned about the price of a unit, the efficiency of the unit will save you thousands over the lifetime of the heating and cooling system and should weigh heavily on your buying decision.

If you live in a hot climate, don't use duct tape on your HVAC. It just dries out and falls off, leaving you with leaks all over the place. Instead, use mastic sealant to cover any holes or gaps in duct work and you'll keep your home comfortable all year long.

Try to stay away from HVAC contractors that ask for upfront payments before they are willing to get started on the work they were hired to do. In many cases, this means that they are more concerned about getting paid than they are about making sure the job is done well.

Never hire an HVAC contractor that does not hold a valid license from your state. There are people out there that will offer to do less expensive work since they have no license. While it may seem like a bargain, you will have lots of issues in the event that something goes wrong.

Before you get into the hot summer months, make sure to schedule a tune up for your current HVAC system. This is very important to keep issues from popping up with your system. It's a small cost to pay compared to the large bills to fix issues that could arise.

If you are hunting for an HVAC company, try to find a company that has plenty of equipment experience. The right company should know how to operate the HVAC brands that you want installed or repaired. They should also be able to answer questions that you have about them.

Check the licensing of any HVAC company that you plan to hire. Start by making sure they are fully licensed. They should be in compliance with your state's business laws. Good HVAC companies should be fully insured. This is to protect their company, their employees, and their customers should anything happen when they are performing a service at the home of a customer.

While it is common practice to negotiate a rate quoted by a contractor, you should not offer an amount that the contractor will find offensive. They have to pay for things like insurance and overhead costs. Keep this in mind when you are trying to haggle with them for a better rate.

When buying an HVAC system from a contractor, don't just purchase from the first person you find. Do a little investigating first. Make sure the person has been in business for a while. Although there are no guarantees, someone who has been around for 10+ years probably had to do something right to stay in the business.

With all of these great ideas fresh in your mind, go out and find the HVAC help you need. Whether you have to hire a contractor or do the work yourself, your knowledge will get you a long way. All you have to do today is get started on your project!






1 2 3 4 5 6 7 8 9 10 11 12 13 14 15