Heat Pumps work down to outside temps in the 30s. Not sub-zero like in Minnesota at times
H/P great for Florida
Idiots
I just made a similar comment. The large building I normally work in has gas forced air and radiant floor heat. They renovated a big storage area to offices and used mini-splits and they work fine as they connect to the gas fired heat areas as a supplemental heat, even in the low 20’s.
The smaller building got converted to heat-pumps when the 1990s furnace died. Works fine to the upper 30s. Almost All the exterior rooms have some portable electric heater for the cold days. They can’t keep up, especially if you have to open the door often.
Heat pumps in Minnersoda.
"The Incredible Mouth-Breathing Left"
Bump
[Heat Pumps work down to outside temps in the 30s. Not sub-zero like in Minnesota at times
H/P great for Florida
Idiots]
I live in Canada and we use a Mitsubishi Zuba heat pump and its excellent and good down to-30c.
“Heat Pumps work down to outside temps in the 30s. Not sub-zero like in Minnesota at times”
I heard that has changed with them, but not sure.
Heat Pumps work down to outside temps in the 30s
But it does work in that limited range. People don’t look at the whole system
same with a heat pump hot water htr, sounds good till you think about it. It the winter it sucks up the heat from your heated basement. Works ok for summer making the basement cooler.
“..Heat Pumps work down to outside temps in the 30s....”
^THIS^
We use em in a northern climate for heat during the spring/autumn cooler temperatures (35-60 degrees) and for cooling in the summer. We turn em off when outside temps drop below 35 degrees and switch over to our cold weather heating source as there is just no more heat in the outside air for them to pull from. They’ll sit there and run and run and run.....for essentially no gain.
IMHO, they have their place and are efficient in that temperature band, but they ain’t no Minnesota winter heat source solution....stupid arse libs are gonna get people killed.
“Heat Pumps work down to outside temps in the 30s. Not sub-zero like in Minnesota at times”
Absolutely. I live in the Tidewater region of Virginia and heat pumps are almost just okay during out semi mild winters. I think the line of demarcation is SC on the eastern seaboard. I miss my old house in the Shenandoah region. Natural gas and AC, that worked without the BS.
Heat pumps have been improved.
I installed 2 Mr. Cool DIY mini splits, one in the fall of 2022, the other in the fall of 2023.
Even with the high cost of electricity, due to using it and our oil fired System 2000 boiler, we spent about the same or a little less than previous years overall to heat the house the 2022-2023 winter. We spent a LOT less the 2023-2024 winter.
We heated less of the house the first year, more than previous the 2023-2024 winter, and all of it to a higher temperature than ever before.
In our area, the key is to keep or get traditional oil, gas, wood, etc. heat for the really cold days when the mini split is inefficient or doesn't work at all.
At -13F the mini split does little. At -22F it does almost nothing.
The way I look at it, the supply of oil and electricity is iffy. At any point one might not be able to get one of them.
If you start with a full tank in the fall, the mini split allows you to not use the oil for most of the winter, preserving it for when it's really cold or needed if the grid supplied electricity is down. We have enough solar and batteries to carry us for a long time to keep the boiler running.
Anybody in the northern USA who thinks they are going to heat with only a mini split air to air heat pump is going to be in for a rude awakening. A geo thermal heat pump will work fine, even on the coldest of days as it is exchanging heat with 55 degree soil, but that type of system is very expensive.
Had one all electric house with a heat pump — never again! We froze in the winter.
My neighbor on Long Island has heat and AC pumps in 5 rooms. The AC seems fine but they keep their oil powered boiler fired up in the Winter.
AGREED
“Heat Pumps work down to outside temps in the 30s. Not sub-zero like in Minnesota at times”
Improvements has been made in the technology and (for a price) the most efficient pumps will put out heat when the temps are in the -10 to 0 f range. Still not good enough Minnesota without some back up system.
We had a hvac contractor out for a check up when it was brutally cold out. He tagged the furnace because of carbon monoxide. Heat pump kept the house at 40 and we bought space heaters, used wood fireplace for a couple days until the new furnace could be installed. I want to say it was around 0 when all this happened, but you’re 100% correct that they lose their efficiency under 40.