When your AC breaks down and you have to find a new one, the process can feel overwhelming. Residential AC installation is a complicated process, especially if you’ve never replaced your AC before. If it’s time to get a new AC system, the best place to start is determining what size AC you need.
Manual J Calculation
The best way to determine the proper size AC for your home is through a Manual J Calculation. This complex formula takes many different factors into consideration to find the BTU requirement for your home, telling you how much energy is required to cool the space properly. These factors include:
- Square footage
- Quantity and types of doors and windows
- The number of people in the home
- Heat-generating appliances
- Local climate and sun exposure
Because a Manual J Calculation is so complicated, we recommend that you always seek out a professional to ensure the calculations are done correctly. To get a Manual J Calculation, have an energy audit done or see if your local AC company provides the service.
Finding an Estimate
If you’re waiting on an energy audit or would like to get a basic estimate for your home’s BTU requirement, you can do a simple calculation based on the house’s square footage. Since each square foot takes around 20 BTUs to cool, multiply the square footage of your home by 20 to find the BTU requirement. Keep in mind that this equation doesn’t take any other factors into consideration, so a Manual J Calculation will always be the most accurate way to size an AC.
Buying an AC
Once you’ve found the BTU requirement for your house, choose the correct AC size by getting an AC system with the same BTUs as your home. Since Manual J Calculations are very specific, the BTU requirement and the BTUs on each AC size will likely not match. Simply round the BTU requirement up to the next closest AC size.
Instead of typing, “AC installation company near me” into a search engine, contact Mendez Air Conditioning and Heating for all of your AC needs. Our expert technicians provide fast, quality AC installation services for California residents.