Heat pumps installed, and balanced correctly are great. I have a customer
with a big ranch house, and no gas, only electricity. They have 5 heat
pump systems that they were not happy with for many years. I was
referred to them, and went to their ranch to check out there systems.
All 5 systems Lennox systems, 2 were working correctly, but ran parts
of the house rarely used, the other 3 were 5 ton hp's running the main
part of the house, and large living-dining area with 20' ceilings. These
3 systems cooled great, but heat mode was poor, so they ran on electric
heat most of the time. They just wanted them fixed, and cost not a big
issue if they were fixed.
I stayed there for 6 hours going through these 3 systems, and found
wrong fan speeds, bad sensors, and under charged/over charged units.
When I finished I felt I had cured their problems, and when the following
winter arrived, I got a call from them saying these units were pouring out
the heat, they had never worked that good.
The biggest problem is technicians do not stay there long enough to
properly balance the charge between heat/cool cycles.