á Air-to-water heat pump combined with photovoltaic panels or pellet heating with solar thermal system
Created on: 2 Jul 2016 22:12
G
Gugugu
Hello everyone,
I am about to start a construction project.
Single-family prefabricated house with a basement.
Heated area approximately 350 square meters (3,767 square feet).
Two adults and currently two children, possibly a third child to follow.
A controlled ventilation system is planned.
Putting aside the initial costs of the heating system,
which option will be more cost-effective in the long run for heating expenses?
An air-to-water heat pump possibly combined with photovoltaic panels?
Or a pellet heating system combined with solar thermal?
For your information, in my current quote the air-to-water heat pump including photovoltaic system costs 37,000, with the photovoltaic system priced at 20,000.
The pellet heating system including solar thermal is quoted at 21,500.
What do you think the ongoing heating costs will be for the house approximately?
What do you recommend?
I am about to start a construction project.
Single-family prefabricated house with a basement.
Heated area approximately 350 square meters (3,767 square feet).
Two adults and currently two children, possibly a third child to follow.
A controlled ventilation system is planned.
Putting aside the initial costs of the heating system,
which option will be more cost-effective in the long run for heating expenses?
An air-to-water heat pump possibly combined with photovoltaic panels?
Or a pellet heating system combined with solar thermal?
For your information, in my current quote the air-to-water heat pump including photovoltaic system costs 37,000, with the photovoltaic system priced at 20,000.
The pellet heating system including solar thermal is quoted at 21,500.
What do you think the ongoing heating costs will be for the house approximately?
What do you recommend?
T
toxicmolotof3 Jul 2016 12:32@alter0029
I assume you also have a heat pump? Could you please upload a load profile from March 16th?
This would clearly show that photovoltaic systems donât provide much benefit for a heat pump (which doesnât mean that photovoltaic systems are bad or uneconomical).
The blue line represents electricity demand, the gray area shows photovoltaic production, and the blue shaded area indicates how much of the self-consumption is covered by photovoltaic.
We are looking at a sunny day in March, so not deep winter but about midway between summer and winter.
The heat pump compressor is clearly visible.
I assume you also have a heat pump? Could you please upload a load profile from March 16th?
This would clearly show that photovoltaic systems donât provide much benefit for a heat pump (which doesnât mean that photovoltaic systems are bad or uneconomical).
The blue line represents electricity demand, the gray area shows photovoltaic production, and the blue shaded area indicates how much of the self-consumption is covered by photovoltaic.
We are looking at a sunny day in March, so not deep winter but about midway between summer and winter.
The heat pump compressor is clearly visible.
A
alter00293 Jul 2016 12:36Iâm not that far yet. Construction has not started here. An air-to-water heat pump is confirmed, but Iâm still undecided about the photovoltaic system; however, I am preparing everything for it.
T
toxicmolotof3 Jul 2016 13:00That generally doesnât cause any harm, but I would advise not to follow the argument that heat pumps plus photovoltaics are ideal unconditionally and blindly.
What do you mean by 50%? The photovoltaic share of total consumption (self-consumption) or the self-consumption rate of total production?
What do you mean by 50%? The photovoltaic share of total consumption (self-consumption) or the self-consumption rate of total production?
B
Bieber08154 Jul 2016 10:26Gugugu schrieb:
Which heating option will be cheaper to maintain in the long run? No one can answer that for you! Prices as well as possible taxes and fees are unpredictable.
Pellets can be economical if you have good access (do you own forest land? Is there a lot of forest nearby? Transportation costs also matter...).
Electricity and even self-produced electricity can be subject to legal changes that might alter conditions drastically tomorrow compared to today...
Maintenance is also part of the running costs. Combustion-based systems will likely always be more expensive to maintain than non-combustion options. Simpler systems with fewer components usually result in lower maintenance expenses.
And remember: the better the house is insulated, the lower the (heating) energy demand will be.
I am currently leaning towards an air-to-water heat pump.
I was offered the Alpha LW 140 A.
Does anyone know about the quality of Alpha pumps?
I will probably add a photovoltaic system with battery storage over the next few years.
This combination seems to me the most modern and the best overall package for a household of 4-5 people.
A major disadvantage of pellets, in my view, is the space requirement. I do have the space, but then other things would have to be stored elsewhere, which might cause frustration later on... and I definitely donât want a fuel bunker or similar either.
I was offered the Alpha LW 140 A.
Does anyone know about the quality of Alpha pumps?
I will probably add a photovoltaic system with battery storage over the next few years.
This combination seems to me the most modern and the best overall package for a household of 4-5 people.
A major disadvantage of pellets, in my view, is the space requirement. I do have the space, but then other things would have to be stored elsewhere, which might cause frustration later on... and I definitely donât want a fuel bunker or similar either.
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