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Originally Posted by R Leo
It's all pretty straightforward stuff...commonsense basic electricity and mechanicals. Clean coils are a must...nothing piled around the condenser. If you're needing to add refrigerant, then you have a leak that should/must be fixed because these are hermetic (sealed systems). Another important thing to be aware of is the condition of the ducting in your attic. Leaks there will cost you big $$$ and are tough to detect without a visual inspection..unless you feel cold air coming out from around a wall outlet or switchplate.
Leathermang and I know all about thermostats and incorrect wiring diagrams, don't we Greg?
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Reminds me of when I got the bright idea to replace my 25 year old original Carrier thermostat with a new fangled digital programable thermostat.
Bought thermostat at big box department store. Went home drank a few Budweiser brews and wired it up. Well it was July and it seemed to work great. It would come on an hour before I got home from work so the house wouldn't be 85 plus degrees when I got home. Winter comes and it works great. I notice that even the heater seems more efficient. Then I got my electric bill. $300 for a 700 sf house that usually ran $85 or so. It turn out the thermostat i Installed was for a gas furnace NOT a heat pump. I was heating my house using only the electric strips. Like a giant toaster. At least I didn't fry the hvac system. Moral of the story: don't drink while you do HVAC work.
