How Adding An Extra Room In Your Home Affects The AC System

air conditioner installation in additionAre you planning on adding an extra room to your home? If so, then it would be a great idea if an expert handles the job. Comfort and value will be added to your home when the extension is well-designed.

However, you should know that all the modifications will affect your air conditioning system’s performance.

Please note that an HVAC contractor will take the total space and several other factors into consideration before installing an air conditioner. These considerations ensure that the AC system can effectively meet all your indoor cooling needs.

Therefore, when thinking of adding an extra room to your home, please remember that your air conditioning system will not perform the same way it did before.
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Air Conditioner Installation Medford NJ: Cooling Your New Home Addition

In this article, we will discuss the effect that a new addition has on your air conditioning system and what you can do about it.

Calculating Cooling Load/Power Needed For Your Home

When you make any additions in your home, such as adding an extra room, the cooling load will increase significantly. An HVAC contractor will use the formula ((Total Square ft. X25)/12,000)-0.5 = required tons, to determine the extra cooling power necessary to cool the whole house.

For example, if your house measures a total of 3,000 square feet in size, the contractor will determine its cooling load as follows:


If the room you are adding measures 500 sq ft in size, the cooling load on the air conditioner will be 6.79. Therefore, you will need to make the necessary adjustments for your AC system to effectively cool the home.

Cooling Options When Adding A Room To Your Home

i) HVAC Air Duct Extension

ductworkThe extra room you have just added was not accounted for by the original design of your air conditioning system. So to supply cool air to the new room, you will need to tap into the existing air duct in your home.

The cooling system is designed in such a way that the further away you move from the air handler, the more the air duct’s diameter reduces. This means that for the new room to get sufficient air without affecting the cooling of the other rooms, you may need to tap one of the larger ducts.

ii) Upgrade Your Air Conditioning System

Before an HVAC contractor makes any modifications to the air ducts, they will need to make sure that your AC unit can comfortably handle the extra load. This is important as it will help you avoid incurring any unnecessary extra costs. If the load is too much for your current AC system, you will need to upgrade the equipment to one that can accommodate the new needs. Your contractor might recommend an upgrade to the system after they determine the cooling load brought about by the new addition to your home. After installing a new condenser and air handler, your whole house will be cooled adequately. Fortunately, most AC installation companies usually offer the option to finance.

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iii) Install A Ductless HVAC Unit

ductless AC systemAs mentioned above, your air conditioner’s performance is affected by the addition of an extra room. The way to ensure that it continues operating effectively is to make modifications to the air ducts and upgrading the air conditioning unit itself. There is another option and it involves installing a new independent AC in the additional room to take care of its cooling needs. It is a good idea to install a mini-split ductless system if your current air conditioner is still relatively new and running correctly. If the new addition is a single room, you can purchase ductless AC equipment and have it installed. Contact McAllister Energy for any inquiries and more information.

Most people forget about heating and air conditioning when planning to add an extra room to their homes. While it is easy to connect water and power to the new room, heating and cooling are a little bit more complex. For this reason, you should contact an experienced and reputable HVAC company to handle it.

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When planning to add an extra room in your home and you need professional HVAC services, contact McAllister Energy. We are highly experienced in providing high-quality heating and cooling services to home and business owners.

Our services include repair, maintenance, and installation of HVAC systems. When you contact us, we will send over our NATE certified and highly experienced technicians to assess your property and make calculations. Therefore, contact McAllister Energy today for the best rates, friendly customer service, and high-quality HVAC services. Take advantage of our free in-home estimates and second opinions.

Some of the areas we service include Lumberton, Medford, Mount Laurel, Vincentown and these zip codes 08048, 08055, 08054, 08088 as well as all surrounding areas in Burlington County, New Jersey.

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