Air-Water Heat Pump - Experiences

Ok thanks, I had only switched on the post a little late. Nonetheless, I have not yet found the [Luftwärmepumpe] supporters.

With the current gas prices, in my opinion, a gas boiler still remains the cheapest option, if necessary combined with solar. Just the additional costs of an air-to-water heat pump would take me years to recoup. Most likely, I would then favor geothermal energy combined with underfloor heating. Then I can still use other systems later. You can also install a trench collector or geothermal baskets. In addition, the pumps are subsidized by the BAFA with €4,500, provided the correct annual performance factor/COP is met.

Nevertheless, I have not yet found any supporters of the air heat pump.

Air-to-water heat pump - air/water heat pump You will surely still voice your opinion; as far as I remember correctly, there are many users here who have installed this heat generator, An air-to-air heat pump - air/air heat pump should sensibly only be installed in a single-family house with Kfw 40 efficiency house status or better; otherwise, the operating costs will eat up the operator. Rhenish greetings

What is the satisfaction with the air-water heat pump like among your customers? I'm just a bit afraid of having to mainly heat with electricity. However, yesterday I found an article online saying that the heating element should only activate from -20 degrees. But I have heard different values before that range from -2 to -15 degrees. So what is correct?

Hello,

How satisfied are your customers with the air-water heat pump? I am just a little afraid of having to heat mostly with electricity.

We have been installing this heat generator for about 10 years. Since people tend more to express negative opinions, I may safely assume that everyone who has bought an air-water heat pump is satisfied.

I can well understand your fear; the internet is full of reports on all sorts of advantages and disadvantages. You might want to plan a visit to an energy agency near you; they will be able to relieve your concerns. Also, no bias can be accused of this agency.

Yesterday I found an article online that said the heating element should only be used from -20 degrees. But I have heard other values that go from -2 to -15 degrees. What is correct now?

Regarding operating costs – because that is what it ultimately is about – the Association of Private Homeowners writes on its website, for example:

"The amortization of the heat pump depends on the individual case, a comparison: 'With a heating load of 10 kilowatts, the air-water heat pump costs around 13,000 euros, the operating costs are about 1,100 euros. By comparison, the gas condensing boiler costs about 4,500 euros with annual operating costs of 1,800 euros. The additional investment must be earned from the difference in heating costs of 700 euros per year. That means the system pays off after about twelve years, with interest on the additional investment not yet taken into account.'"

A brine/water heat pump as well as a water/water heat pump have lower operating costs; however, the initial investment is higher. So if electricity costs rise sharply, choosing the heat pump was the wrong decision.

Rhenish regards

Yes, you are right that you only find negative examples on the internet, unfortunately.... Well, I have a meeting with our heating engineer tomorrow and then I will see what comes out of the conversation. We would like to use a ground source heat pump, the problem is that our general contractor cannot guarantee a fixed price for the drilling, nor can the drilling company. So, on top of the current additional cost of €7,500 (ground source heat pump + drilling - subsidy), something else might quickly be added that we cannot calculate. Unfortunately, that is a bit too risky for us....