The article doesn’t go into it, but a key advantage they have is that heat pumps move heat, rather then trying to generate it. So they can move a lot more heat into your house than would be generated by running the electricity they use through a resistor. This makes them effectively more than 100% efficient (the exact amount depends on temperature) as compared with burning a fuel or resistive heat.
The biggest barrier is cost, because you still need a standard heater
and ACfor times when it is eithertoo hotor too cold for the heat pump to function.It’s definitely more efficient, and most of the time you won’t need the backup. But when you need it, you really need it.
Edit: I stand corrected.
Heat pumps can run in very cold weather; and the worst that may happen is that you need some additional resistive heat to handle the demand. You don’t need a completely new system to supplement heat with current technology.
And a heat pump is an air conditioner that moves heat both ways. A lot of heat pumps today operate in dual mode, so they can act as air conditioners as well
Straight up since my grandma got one installed at her house she hasn’t had to use her in wall heaters or her fireplace
And in AC mode that thing is great
Technology Connections did a video on this recently. The need for backup, even in Chicago, is way over estimated.
The caveat there is that he lives in Town Home. Someone living in a stand alone home will have four exterior walls and a higher b/u heating requirement. I’d also like to point out that Chicago isn’t even close to the end all / be all of cold. He makes a big deal out of -12f but other areas in the country will go to -30 or even -40 nearly every winter.
The furnace in his place is comically oversized though.
He mentions that his parents live in a single family home in the same area and get along fine with heat pump.
Plus, from personal experience, the heat pump in my SFH only started needing emergency heat when the 20 year old compressor started to go, and since I’ve replaced it I’ve never had to use the emergency coils. I do have a fire in the fireplace on very cold nights, but that’s mainly to alleviate strain on the grid.
His point was that the guidance used by sales staff tends to be far higher than design guidance in building codes. Then, he proved the design guidance two different ways to show it worked with his home.
And the design temperature of -12 °F used for testing is only 13 °F higher than the record low of -25 °F. If his system had to deal with a record low, it is still going to keep the house above freezing.
Hey bud, just wanted to let you know, “standard AC” is already a heat pump
“Heatpumps” are the same technology as your regular minisplit air-conditiors. You can get some that have a range of between -30 °C and 50 °C (-22 F and 122 F).
Needing supplemental hot/cold only really applies to the heat in regions where it gets very cold. An ac is a heat pump, just one way.
You don’t need additional AC, a heat pump is an AC. For very cold, you’re right, but it has to be VERY cold, like 0F or lower. My last heat pump system had fall back heating coils which are only 100% efficient opposed to a heat pump’s >100.