ᐅ Comparison of Different Heating Systems

Is it just me, or is 3.88 for this company (!) quite respectable?

HeimatBauer schrieb:

Am I the only one, or isn’t 3.88 for this company (!) quite impressive?

When I look at the gas consumption for heating over the past years, divide by 3.88 (average 7,500 kWh), and multiply by the electricity price, I end up with heating costs of exactly €40 per month.
And that’s for a 2014 house with 130m² (1,400 sq ft) WITHOUT underfloor heating.

That is currently nearly €250 below the heating costs with gas plus the additional "air conditioning" option.

All calculations are based on current figures from Check24.

I had a monthly gas advance payment of €28, so yes, that can definitely be accurate – energy prices have increased in recent years.

From 2017 to 2018, my gas price was 4.74 cents per kWh
From 2022 to 2023, it was 16.51 cents per kWh
For 2023 to 2024, it will be 9 cents per kWh

For electricity, it looks like this:
2017 to 2018: 22.91 cents per kWh
2022 to 2023: 29.71 cents per kWh
2023 to 2024: 26.60 cents per kWh

By the way, I made sure to always run two indoor units rather than having the outdoor unit turn on for just one. Of course, only when that made sense, to optimize the COP as much as possible.

Anyone else have thoughts or even ideas?

My house has a living area of 112 sqm (1,205 sq ft); the data is based on this.
It has gas heating, underfloor heating, 5 sqm (54 sq ft) of solar panels for hot water, and since 2022, an additional air-to-air heat pump.

A correction to my last post:

In 2017-2018, the gas price was 4.74 cents per kWh.
In 2022-2023, it was 16.51 cents per kWh.
For 2023-2024, it will be 9.7 cents per kWh.

Nutshell schrieb:

My house has a “living area” of 112 sqm, and the data is based on that.

I understood from your post #48 that you wanted to compare the actual figures for a heat pump plus underfloor heating to your 130 sqm (1400 sq ft) house with gas heating and no underfloor heating.

With your current gas and electricity prices, you end up (assuming 7,500 kWh gas = 1,933 kWh electricity at a COP of 3.88) paying about €728 for gas heating. If you were to heat with a heat pump (even just an air-to-air heat pump, which is basically an air conditioner) using electricity, your costs would be around €515.

You (and others in the forum) can take away that even a basic air conditioning unit in newer houses can save money (and from the end of this year, air-to-air heat pumps will again be eligible for subsidies just like regular heat pumps). For less efficient houses, it can also work, although electricity costs will rise. For energy efficiency ratings F-G, heating costs are higher than with gas or oil, but this is only a snapshot — if CO2 pricing increases as the market expects, the situation will change significantly.

Any other ideas I have? Wait until subsidies for air-to-air heat pumps become available and then get rid of the gas heating ;-)

What do you mean by the subsidy? I have already purchased an air-to-air heat pump. 35% of the invoice has already been covered by subsidy funds.
Nowadays, the subsidies are lower, and you have to measure the heat output as well as ensure that grid operators can disconnect the system…