This is just not true at all.

Why do you even respond if you don't know enough about heat pumps?

It is practically true. Sure my heat pump can make heat below 28F - but it was sized for cool my house in summer and so it cannot make enough heat anymore and so I need the backup heat.

Oh, sorry, I guess I was brainwashed by the "anti heat pump mafia". I had this conversation with three HVAC installers but according to this thread any HVAC installer that speaks ill of heatpumps is old and stupid. Recently, I stayed at an AirBNB recently that had a heatpump and the temps dropped during the deep freeze and it was running 100% of the time and failing. The AirBNB owner said it was brand new and I would be responsible for excessive electricity use. They didn't charge me. Based on this, I am sooo glad I replaced my dead furnace with gas three years ago and steered clear of heat pumps.

But do go on about how I don't know enough.

Old heat pumps didn't do well in old temperatures. In the 80s and 90s, a heat pump couldn't handle freezing temps.

Modern heat pumps do fine well below 0 degrees Celsius. Here's one that's great to -15 C and okay down to -25 C[0]. If you search cold-climate heat pumps, you'll find plenty of information about how modern heat pumps are fine in most the temperatures you'll find in most of the US (including up north).

(I have heard that a lot of them are still only available in Europe, but you can definitely find some in the US.)

[0] https://carbonswitch.com/best-cold-climate-heat-pump/

You clearly don't know if this is your only source.

"Below 0° Fahrenheit, heat pumps can still heat your home with more than twice the efficiency of gas heating or standard electric heating (such as electric furnaces and baseboard heaters). They’ve been tested and approved as far north as the Arctic Circle, and are popular options in very cold countries like Finland and Norway."

Finland has over 60% heat pumps.

And heat pumps, just to be clear, work by generating a temp difference. The main problem is the efficiency and that drops also because there is a heating cycle needed for the air intake.

How many models did you actually research yourself?

I mean, instead of an argument you responded with some kind of rant about your Airbnb experience.

So his point still stands.

The reply made no point, so what exactly stands? Reply just said I don't know what I'm talking about, so I explained where my knowledge came from, which is more than the reply did. And somehow that's a better "point"? kids these days.

You clearly communicate wrong information and the answer to this is that you had some Airbnb experience and talked to three people.

That's basically explaining that you did zero basic research.

And I'm not a kid fyi.

Learn to Google and learn to do research

This whole thread is people who don’t own a house or heat pump screaming they are right and people who do own a house just shrugging because they’ve experienced reality.

Are you assuming always that much?

My whole new housing estate have heat pumps.

And I told you before already about Finland. And if you don't know what Finland is: it's a cold country in Europe.

When you grow up and need to drop $20k of your hard-earned cash on a new HVAC, it'll be funny to see if you decide to take a chance when people you know that have heat pumps are bitching about them not working, or if you decide you want to be warm and not deal with the hassle.

They come with an electric heater, but they don't stop working until far below freezing point. It's normal for a heat pump to still be better than pure resistive electric heating even at 10°F.

Ground source heat pumps are available that go down significantly lower than 30F. They are more expensive. Though running the electric wires is also very expensive due to their inefficiency. Typical heat pumps are often better suited for warmer climates because of this

It also appears that the tech for the more typical air source heat pumps has improved significantly in recent years which makes it more viable for colder climates

I believe they run a heat conductive fluid through heat exchange coils in the ground. This allows you to pump heat into the ground during winter and extract said heat (not sure how accurate this is) during the winter.

You're not storing the heat that's underground, it's just that the ground is a huge thing with massive heat storage capacity that doesn't notice weather as much as above ground does.

If above ground ranges from 0-100 degrees F, underground likely ranges from like 64-68 degrees F, which makes it really energetically "cheap" to get to your preferred temperature range, heating to idk 70 at most and cooling to probably not even 65.

This isn't true, the latest models work at temps far below that. There are still thresholds where you'd want another source, but they're very functional even in the upper Midwest.

Not true, mine goes down to 23F with negligible decrease in efficiency and still functions after that, but with reduced efficiency.