ᐅ Cost Breakdown Heat Pump – Heat Pump with Ground Collectors
Created on: 23 Aug 2015 23:09
S
SimonMoers
Hello,
I have to say, I’m really overwhelmed by the complexity of heating systems. Apparently, each type comes in about 30 different models.
Could someone provide an example overview of the costs involved and which heat pump would be suitable for a 125 m² (1,346 sq ft) single-family house if I want to plan a heat pump with ground collectors from Vaillant?
geoTHERM VWS 63/3? And what exactly is covered by the 4000 euro subsidy?
Can anyone recommend an affordable company in North Rhine-Westphalia (NRW)?
I have to say, I’m really overwhelmed by the complexity of heating systems. Apparently, each type comes in about 30 different models.
Could someone provide an example overview of the costs involved and which heat pump would be suitable for a 125 m² (1,346 sq ft) single-family house if I want to plan a heat pump with ground collectors from Vaillant?
geoTHERM VWS 63/3? And what exactly is covered by the 4000 euro subsidy?
Can anyone recommend an affordable company in North Rhine-Westphalia (NRW)?
S
Sebastian7924 Aug 2015 22:15Hot water is practically negligible – if the borehole is correctly calculated, it normally doesn’t even freeze.
We drill 140m (460 feet) deep, so the base should never freeze… unless winter ’78 shows up again.
By the way, I also won’t be using electricity for the heat pump…
We drill 140m (460 feet) deep, so the base should never freeze… unless winter ’78 shows up again.
By the way, I also won’t be using electricity for the heat pump…
The costs for the additional connection cancel out the savings from the off-peak tariff.
The calculation is the tricky part... I calculated 4.3 kW heating load, the U-value results in 4.6 kW (35 kWh/m²a heating demand for 190 m² (2045 ft²) – just as a reference).
The planner who prepared the energy saving regulation used a 6 kW heat pump. One heating engineer offered a 6 kW unit, another 7.6 kW, and the one we chose works with Vaillant and offered the VWS82/3 model with a 6 kW borehole.
PS: We once tried to request a heating load calculation from an MEP engineer, but they said it wouldn’t make sense for a single-family house.
The calculation is the tricky part... I calculated 4.3 kW heating load, the U-value results in 4.6 kW (35 kWh/m²a heating demand for 190 m² (2045 ft²) – just as a reference).
The planner who prepared the energy saving regulation used a 6 kW heat pump. One heating engineer offered a 6 kW unit, another 7.6 kW, and the one we chose works with Vaillant and offered the VWS82/3 model with a 6 kW borehole.
PS: We once tried to request a heating load calculation from an MEP engineer, but they said it wouldn’t make sense for a single-family house.
S
Sebastian7925 Aug 2015 07:05Yes, I don’t understand either – usually quite active online about everything, but you can’t find a heat load calculation (HLB) anywhere on the web?
Doing it yourself is a lost cause...
Get it done and also plan the drilling accordingly.
The difference between the energy saving regulation calculation and a real heat load calculation was 1 kW more… just as a reference point.
Doing it yourself is a lost cause...
Get it done and also plan the drilling accordingly.
The difference between the energy saving regulation calculation and a real heat load calculation was 1 kW more… just as a reference point.
The energy saving regulation does not yet include any performance calculation (kW), only energy consumption (kWh/m²a).
Why didn’t you choose the Nibe F1255? From the specification sheets I’ve seen, it is better in every aspect – quieter, modulating, better COP and even better SCOP, costs less, and provides more hot water.
... in our case, I’ve decided on the Vaillant with 5.3 kW, but only because the heating installer isn’t familiar with Nibe.
Why didn’t you choose the Nibe F1255? From the specification sheets I’ve seen, it is better in every aspect – quieter, modulating, better COP and even better SCOP, costs less, and provides more hot water.
... in our case, I’ve decided on the Vaillant with 5.3 kW, but only because the heating installer isn’t familiar with Nibe.
S
Sebastian7926 Aug 2015 17:51Ours had a heating load calculation – but not according to DIN standards.
I simply like Vaillant – also as a German brand, with good service and few known issues. My heating technician is a Vaillant partner as well, but that was just a coincidence.
Modulating sounds great, but I believe it hardly makes a difference with a properly sized and well-adjusted system.
And why more domestic hot water? As I said, I would never buy them combined… that way we save a bit more.
I simply like Vaillant – also as a German brand, with good service and few known issues. My heating technician is a Vaillant partner as well, but that was just a coincidence.
Modulating sounds great, but I believe it hardly makes a difference with a properly sized and well-adjusted system.
And why more domestic hot water? As I said, I would never buy them combined… that way we save a bit more.
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