This is an add-on to my existing 7-year-old Heil 80% 5-ton furnace that I will try to get derated to 4-ton if possible. I've tried to come up with the most cost-effective solution to meet my needs. The cooling load has been professionally sized by two contractors at 2.8 and 2.9 tons, and my own HCAV-Calc results agreed with that. Using the heat pump will reduce the usage of the somewhat ineffecient gas furnace. We need humdification almost year-round here (Albuquerque NM).
Rheem RPNL026JAZ 3-ton heat pump condensor
Rheem RCFLHM3621AC 3-ton coil
White Rodgers "Big Blue" 1F95-1291 Thermostat
White Rodgers F145-1378 Outdoor Temperature Sensor
Honeywell TrueSTEAM humidfier controlled by the 1F95-1291 Thermostat
I'd like to oversize the coil by 1/2 ton but Rheem doesn't have a 3.5-ton and I don't want to mix-and-match. The specs for this Rheem combo look pretty good, probably due in part to the large supply duct size (21 inch) for the 3-ton coil.
I can't post prices here but this can be done at a very reasonable price.
Any thoughts or comments?