Shopping for an AC unit may seem overwhelming and redundant if you do not know what you are looking for. Not doing your research or keeping your home in mind could result in airflow difficulties and other costly problems down the line. Below will provide you with a simple set of steps to find the perfect unit for your home.
Estimating the Size of the System
In order to determine the size of your new AC system, you must understand the units in which it is being measured. The HVAC industry uses British Thermal Units (BTU) which measure the amount of heat an air conditioner can remove in an hour. Keeping this in mind, multiply your home’s square footage by 20 in order to have an estimate for which capacity air conditioner you will need.
Manual J Calculation Test
Since you have only calculated an estimate, there are additional factors that need to be taken into consideration. This includes the number of doors and windows, insulation, number of residents, heat-generating appliances, local climate, sun exposure and ductwork. The Manual J Test will always be the most accurate way to figure out the correct capacity your home needs in an AC unit, but it could be tricky determining the amount of BTU each factor listed above requires. This is why you should leave it to the professionals to help make the process fast and simple.
Average Unit Sizes for Average Sized Homes
On average, the most common AC unit size for a 1,300 square foot residential home is anywhere between a 2 – 2.5 ton unit. For example, a 1,568 square foot home in the climate of California will be listed under Sizing Group 50 and need a 3-ton unit. This sizing group is just the column that includes this home’s square footage within the range and gives you the proper size of the unit you need based on your energy provider.
Common Myths When Buying a New Unit
One of the biggest misconceptions when purchasing a new HVAC unit is thinking going bigger is better. This is wrong for many reasons, but mainly because it will cost you more money instead of saving. A bigger unit could potentially interrupt your home’s normal humidity levels due to the schedule of airflow. More or less humidity is not only uncomfortable to sit with, but it could also cause electricity consumption.
All of these factors do not take into account that the lack of routine with the airflow in your home could mess up the physical pieces of the unit, and be more costly than purchasing the correctly sized unit in the first place. On the contrary, purchasing a unit that is too small for your home can result in spending more money due to its need to run constantly to keep your home cool and comfortable.
Picking out the perfect AC unit for your home may seem overwhelming, and this article may have even left you with even more questions. Give Mendez Air Conditioning and Heating a call today for all of your unanswered questions or to schedule an estimate!