I just had a new HVAC system installed in a new house and it has been
running for about two months. I haver not fully paid for the system yet as
the contractor still has some work left to do (load balance & cosmetic
Today the temperature is 100 outside. I have my thermostat set to 77 and
the actual temperature is 81. (This is upstairs, downstairs a separate
system is maintaining the selected temperature.)
I am getting about a 20 degree drop. The contractor tells me that this is
normal performance and I should not expect more than a 20 degree drop.
Is that acceptable as an industry standard for residential systems, or
should the system be doing better? Should I accept the system as-is or
demand better performance?
In my location 95-102 degree days occur every summer but it is rare to have
more than 10-15 of them per year. I would rather have a slightly
undersized system than an oversized one.
Thanks for any help!