How to Know Your Installing The Right Size Air Conditioner

How to Know Your Installing The Right Size Air Conditioner

the contractor needs to complete a

in order to know the right size of air conditioner to install. The calculation is also necessary in the Phoenix Metro in order to receive a

from SRP or APS. We perform heat loads for all of our installs and were going to walk you through how this calculation is made. Basically, how much heat enters the home is calculated. There are 7 components to this.

Heat gains from exterior walls, ceilings, and floors

Heat gains from windows, and doors

Heat gain from infiltration (conditioned air leaking out of the home)

Internal heat gain from appliances, and occupants

Each Of These Steps Are Very Important To Know What Size Of Air Conditioner Is Needed

. The outdoor design temperature is sort of the average maximum high temperature and is referenced from an outdoor design temperature chart (ex. Phoenix is 108, Tucson is 105, and Prescott is 96). The indoor design temperature is what the homeowner likes to set their thermostat to (ex. 72 F). The design temperature determines the

value and is one of the cooling factors.

2. Heat Gains from Walls, Ceilings, and Floors

you need to do two things. First, calculate the area of the walls, and then determine the R Value of the wall. The R Value of the wall determines the

and can be determined by how thick the wall is (about 3 values per inch). Area x Cooling Factor = heat gain from a wall.

3. Heat Gains from Windows and Doors