How does one size an A/C? Planning on installing one in my house in up coming weeks.
Any help would be appreciated.
Thanks!
What type of house is it and how old? Is it a tight house or a loose house?
Measure the square footage, excluding the basement.
Usually you can divide the square footage by 850 for an older loose house, or divide by 950 for a newer tight house. The answer would be the tonnage that is required.
The HVAC designer would be upset with my advice. They would use software to do a proper heat gain / heat loss calculation and factor in the number of windows, bedrooms and exposure to sun.
My way is just a basic rule of thumb. ;D
Built in 2011, so new house.
Perfect thanks for that. I'm sure when you go size a job you get engineers involved. ;)