Let me start by saying:
WHETHER YOUR HOME IS NEW OR OLD….YOUR HEATING AND AIR SYSTEM IS VERY INEFFICIENT.
I have yet to find 1 home out of hundreds that I have tested over the years that actually meets its rated efficiency!!
The above is a 100% provable statement – Pick a home (any home) and I’ll show you that its heating and A/C system(s) are underperforming by at least 40%. For the majority of them, this number will be much worst.
You might ask WHY?…
It has to do with 3 main factors that must be done properly and that I have yet to see get done right.
These are:
1) System Sizing ( AKA “Load Calculation” ).
2) Distribution (“duct”) System.
3) Refrigerant System.
The reason these things are not done properly or not done at all is due to a lot of “rules of thumb” practices as well as a lack of testing & understanding of whole house system performance.
THE KEY IS: ALWAYS TEST – NEVER GUESS!!