I am about to replace my 2.5 ton carrier unit. Spec is a new
infinity carrier unit, price is reasonable based on other estimates for
a new condenser, inside coil / lines and install. Probably be at 14.5
as the new furnace is not being replaced. Old unit was a '99 410 unit,
he estimated 10 seer. Living in Minnesota, probably on 1/4 of the days
in the summer.
After I gave him the upper level square footage, the HVAC guy started talking 'we know your house size type -- its a standard split level -- no need to do a standard J calc on my laptop.
This was based he said that I don't use continually during the summer, so
quicker cooling would be an advantage over lower humidity with a 2 ton
How much do customer use patterns / preference go into selecting the
tonnage for a unit. That is, is there some fudge as to a 2 or 2.5 unit, or
should I demand to go strictly by the J report?
Thanks -- you expertise is greatly appreciate!