Quote:
Originally Posted by rsmurano
My concern is 3 tons might be on the smallish size and it will work harder to cool the house down compared to a larger size which won’t work as hard. Air conditioners and heat pumps are vastly different on how they operate. I don’t know what the seer rating is but I doubt it’s the most efficient heat pump out there. I’ll ask Munns who put it in. Thanks
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Slightly undersized is better than oversized. Far better to have longer run times versus short cycling. You might consider a variable heat pump if you replace it. I have a Carrier variable speed heat pump that is slightly undersized by performs well year round. As pointed out, get the calcs from the building department and see what they recommend. The size of the unit is just one variable in cooling a home - there are others including supply duct sizing, return sizing, type of inside unit, window sizing and direction etc etc.