We are planning a new build. The footprint of the house: 10 x 14.5 meters (33 x 48 feet). Ground floor: a household of two retirees. Upstairs, a self-contained apartment for one person.
Heating options / power supply:
a) standard gas boiler
b) ground source heat pump, electricity from the grid
c) ground source heat pump, electricity from own photovoltaic system and possibly battery storage
d) ground source heat pump, electricity from own photovoltaic system, battery storage, and possibly cloud services
So far, we have no information about the price difference between purchasing a standard gas boiler and a ground source heat pump.
Two construction companies said a standard, affordable gas heating system would be sufficient since houses today are so well insulated that the heating demand is not very high. But is that future-proof?
And if a heat pump is chosen, is it better to have electricity supplied from an own photovoltaic system? With or without storage? In addition, a cloud solution?
Heating options / power supply:
a) standard gas boiler
b) ground source heat pump, electricity from the grid
c) ground source heat pump, electricity from own photovoltaic system and possibly battery storage
d) ground source heat pump, electricity from own photovoltaic system, battery storage, and possibly cloud services
So far, we have no information about the price difference between purchasing a standard gas boiler and a ground source heat pump.
Two construction companies said a standard, affordable gas heating system would be sufficient since houses today are so well insulated that the heating demand is not very high. But is that future-proof?
And if a heat pump is chosen, is it better to have electricity supplied from an own photovoltaic system? With or without storage? In addition, a cloud solution?
L
ludwig88sta18 Dec 2019 10:36What does "no" maintenance mean? After a few years (estimated from 5?) surely even the best heat pump will have some parts break or wear out? What are your experiences with this?
Have you installed the Geisha yourself as well? It is the Panasonic WH-MDC05F3E5 model, right? Because I can't find anything else about it. At first, I thought Geisha was a brand I had never heard of before.
Have you installed the Geisha yourself as well? It is the Panasonic WH-MDC05F3E5 model, right? Because I can't find anything else about it. At first, I thought Geisha was a brand I had never heard of before.
No maintenance means exactly that—no maintenance. Of course, heat pumps also require servicing, but very few people are aware of this, and the maintenance is not as extensive as with a gas boiler.
With heat pumps, maintenance is typically only done once something breaks and heating costs skyrocket, instead of relying on regular servicing. This is why the common advertising slogan is "no maintenance."
With heat pumps, maintenance is typically only done once something breaks and heating costs skyrocket, instead of relying on regular servicing. This is why the common advertising slogan is "no maintenance."
L
ludwig88sta18 Dec 2019 10:50Mycraft schrieb:
With heat pumps, people tend to just wait ("wait" as in letting time pass) until something breaks and heating costs skyrocket, instead of relying on regular maintenance ("wait" as in checking the heat pump and, if necessary, replacing parts). That’s also why the common advertising slogan is "no maintenance."I’ve added that. But yes, thanks.
N
nordanney18 Dec 2019 10:51Mycraft schrieb:
With heat pumps, people tend to wait until something breaks and heating costs skyrocket, instead of opting for regular maintenance. Hence the common advertising slogan "no maintenance." What exactly is maintained in a heat pump?
Our heating engineer said that heat pumps don’t require maintenance (after all, it’s basically a refrigerator with more electronics). However, it makes sense to check all the other heating system components.
Maintenance depends on the type of heat source (air, groundwater, ground). The following components should be serviced regularly:
Depending on customer requirements, manufacturer guidelines, and legal regulations (e.g., chemical climate protection regulations), maintenance intervals usually range from 1 to 3 years. Therefore, it is not possible to give a general recommendation for maintenance frequency.
A heat pump is not maintenance-free at all. It is more comparable to an air conditioning system (which also requires maintenance) than to a refrigerator.
The scope of maintenance for a gas boiler is actually not as extensive as one might expect. It is simply legally required, unlike for heat pumps.
- Expansion vessel(s)
- Heat exchanger in air source heat pumps (due to contamination from pollen, fine dust, possibly leaves)
- Condensate drains, if present (to prevent blockages)
- Domestic hot water system (e.g., descaling heat exchangers)
- Heating water quality check (to prevent corrosion)
- Brine quality in geothermal systems (for frost protection)
- Groundwater systems: testing of well water quality and monitoring water levels in the wells (which can change)
- Leak tightness of refrigeration circuits in accordance with chemical climate protection regulations (ChemKLimaVO), depending on design (hermetically sealed or not) and refrigerant quantity
- Inspection of electrical connections (e.g., tightening terminals)
Depending on customer requirements, manufacturer guidelines, and legal regulations (e.g., chemical climate protection regulations), maintenance intervals usually range from 1 to 3 years. Therefore, it is not possible to give a general recommendation for maintenance frequency.
A heat pump is not maintenance-free at all. It is more comparable to an air conditioning system (which also requires maintenance) than to a refrigerator.
The scope of maintenance for a gas boiler is actually not as extensive as one might expect. It is simply legally required, unlike for heat pumps.
N
nordanney18 Dec 2019 11:14Mycraft schrieb:
- Expansion vessel(s)
- Heat exchanger in air source heat pumps (due to contamination from pollen, fine dust, possibly leaves)
- Condensate drains, if present (due to blockage)
- Domestic hot water system (e.g., descaling heat exchangers)
- Check heating water quality (due to corrosion)
- Check brine quality in geothermal systems (due to antifreeze)
- Groundwater systems: testing well water quality and monitoring water levels in the wells (which can change)
- Leak tightness of refrigerant circuits according to chemical climate regulations depending on the design (hermetically sealed or not) and refrigerant quantity
- Inspection of electrical connections (e.g., tightening terminals)
So basically, everything around the heat pump but not the unit itself. That's what I’m saying.
So nothing inside the unit itself really "breaks." I would personally skip the "maintenance" then.
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