ᐅ Heating System Quote Comparison – Request for Your Experiences
Created on: 11 Sep 2019 10:09
T
Tx-25
Hello everyone. We have received three quotes for an air-source heat pump, underfloor heating, photovoltaic system, and decentralized ventilation with heat recovery. As expected, all offers differ from each other.
Regarding the proposed heat pumps:
Brötje BWL Split 8 C with electric heating element €9207.95
Elco Aerotop Split €10,222.50
Viessmann Vitocal 200-S €8829.31
The prices include accessories. From my research, I am most inclined towards the Elco. It seems to have the best specifications on paper. Overall, the offer for this heat pump is also the most affordable. Unfortunately, I found little information about the Brötje system.
Now my questions:
- What do you think about these systems? Do you have any experience? How would you assess the prices?
- What size should the hot water tank be? Considering an air-to-water heat pump combined with photovoltaics? The Brötje system includes a 150-liter (40 gallons) tank plus a 100-liter (26 gallons) buffer tank. The Elco option has a 180-liter (47 gallons) tank.
- What else should be taken into account?
- Are these systems appropriately sized? The building’s energy demand is 21.1 kWh.
Regarding the proposed heat pumps:
Brötje BWL Split 8 C with electric heating element €9207.95
Elco Aerotop Split €10,222.50
Viessmann Vitocal 200-S €8829.31
The prices include accessories. From my research, I am most inclined towards the Elco. It seems to have the best specifications on paper. Overall, the offer for this heat pump is also the most affordable. Unfortunately, I found little information about the Brötje system.
Now my questions:
- What do you think about these systems? Do you have any experience? How would you assess the prices?
- What size should the hot water tank be? Considering an air-to-water heat pump combined with photovoltaics? The Brötje system includes a 150-liter (40 gallons) tank plus a 100-liter (26 gallons) buffer tank. The Elco option has a 180-liter (47 gallons) tank.
- What else should be taken into account?
- Are these systems appropriately sized? The building’s energy demand is 21.1 kWh.
There is an online "heat pump consumption database" that shows actual values from homeowners.
Looking specifically at the 5 kW Panasonic model, which can be bought for under 3,000 euros, the numbers don’t look bad at all. The values do vary, but I would estimate an average of about 1,000 kWh per year. That corresponds to roughly 300 euros in electricity costs. Then add a photovoltaic system with smart controls, which manages the boiler and heating during the day. My neighbor actually pays only 300 euros per year for heating!
There is a large fan base around the Panasonic "Geisha," which heats very economically.
If you build according to the old KfW 70 standard, with 45 kWh per m² per year, a 130 m² (1,400 sq ft) house requires 5,850 kWh. With an annual performance factor, that corresponds to 1,500 kWh. With a heat pump electricity tariff, that costs about 300 euros.
For thermal hot water preparation of 3,600 kWh for 4 people, an additional 180 euros is added.
This is without smart-controlled photovoltaic self-consumption.
Looking specifically at the 5 kW Panasonic model, which can be bought for under 3,000 euros, the numbers don’t look bad at all. The values do vary, but I would estimate an average of about 1,000 kWh per year. That corresponds to roughly 300 euros in electricity costs. Then add a photovoltaic system with smart controls, which manages the boiler and heating during the day. My neighbor actually pays only 300 euros per year for heating!
There is a large fan base around the Panasonic "Geisha," which heats very economically.
If you build according to the old KfW 70 standard, with 45 kWh per m² per year, a 130 m² (1,400 sq ft) house requires 5,850 kWh. With an annual performance factor, that corresponds to 1,500 kWh. With a heat pump electricity tariff, that costs about 300 euros.
For thermal hot water preparation of 3,600 kWh for 4 people, an additional 180 euros is added.
This is without smart-controlled photovoltaic self-consumption.
B
boxandroof22 Nov 2019 22:47I think you looked at systems without a full year of operation. The 1000 kWh of electricity is far too optimistic. With photovoltaic and the Geisha system, we reach 1000 kWh of electricity purchased per year, but that is neither guaranteed nor an average.
Apart from that, I agree with you. <3,000 euros for the heat pump, heating costs of 300-500 euros, no maintenance costs or chimney sweep fees are, alongside the CO2 considerations, a strong incentive.
Apart from that, I agree with you. <3,000 euros for the heat pump, heating costs of 300-500 euros, no maintenance costs or chimney sweep fees are, alongside the CO2 considerations, a strong incentive.
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