Thread: HVAC Heat Pump
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Old 11-14-2025, 08:35 PM   #37 (permalink)
redpoint5
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I've got a bunch of quotes I'll go through and summarize here; all very expensive. I might have the downstairs occupied early next year though, so figuring out how to make it comfortable is becoming a priority.

Quote:
Originally Posted by Piotrsko View Post
My 3ton 3year old top of line mitsubishi heat pump is on a 40 amp circuit 220/240 vac 100 amp panel. Give it a minute or so after the 6am start up and it's 100f on the floor vents with enough volume to blow streamers straight up, but we supposedly average 30 most of the winter and not much below. No helper electric coils. Do have a pellet stove, if it ever gets so cold outside that the heater cant find any heat to move. Supposedly like -14f per specs. Haven't used the stoves since installing the hvac. 1100 sqft house, lousy insulation if at all. Your mileage will vary. Also $20K installed
Good point of reference.

Quote:
Originally Posted by freebeard View Post
One of the advantages of not having Internet for 2 weeks, is that among other chores, I weatherstripped the entry door and the fire door.

256 sq ft, running 700/1400 watts in an oil filled radiator. I'm thinking about steam cleaning the built-in radiator, it's dusty so it smells when its on. I think the oil radiator is more efficient?

My current bill shows $0.648/KWH.
I need to get a round tuit for weather stripping as well. Just noticed daylight through a small door that leads from the conditioned "boiler room" to an unconditioned crawl space (that's like 8ft tall).

All resistance heaters are going to be near 100% efficient, it's just that electricity is expensive per BTU unless you're getting above 100% efficiency with a heat pump.
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