Heating a house with 10 ft ceilings
Hi. New member here. I have a problem/question and am hoping someone with knowledge or experience can help.
Problem: Have a one story house with 10 ft ceilings with heat pump. The return air and supply air vents are all in the ceilings. Cooling in summer is fine. Heating in winter is terrible. Even when the outside is around 40 the inside will never get above 60. Well, near the ceiling is about 85 or so while at the normal person hight level where the thermostat is is around 60. When outside is around 20, inside is around 45. (I have disconnected the auxiliary heating of the heat pump. Long story.)
Question: been thinking to get a second unit working with gas installed in the crawl space under the floor. AC/HP is in the attic.
1. Would this work?
2. Would it affect the value of the house downward as people might find it unusual?
3. To avoid heavy ducting expenses I am thinking of having two supply air vents. House is 1 bedroom and basically has three large spaces. The two would be in master bedroom and kitchen/family room area.
4. If ok, should the two systems be on a single thermostat or could I have two separate and independent thermostats?
We are frustrated and cold. Please help.