ᐅ Older apartment with gas boiler heating – underfloor heating now, heat pump later
Created on: 24 Mar 2022 16:27
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selterdurst
Hello dear community,
I have a quick question. We will soon be moving into our 80m2 (860 sq ft) condominium and are planning some renovations. The building has an energy rating of D, was built in 1890, but the apartment itself dates from the 1990s (top floor).
Currently, the apartment has a 26 kW gas boiler for heating and hot water. Since we want to replace the flooring, we are considering whether now is the right time to install underfloor heating. We haven’t really budgeted for it, but I figure it’s now or never with the new floor. We were also planning to install an air conditioning system in the medium term, basically a light heat pump.
Question: Would underfloor heating also reduce the gas boiler’s consumption without any other changes? I’m wondering if, in a worst-case scenario, you could just switch on the air conditioning as backup. And if we do install underfloor heating, should we remove the existing radiators or leave them in place?
Does a “proper” heat pump make sense here? For example, on the roof? Or would a combination of the gas boiler, underfloor heating, and air conditioning as backup create an energy mix that doesn’t encourage Putin to invade more countries and doesn’t demand five-figure costs for an unplanned heat pump installation (not to mention getting approval from the homeowners association)?
Basically, if I spend a lot of money installing underfloor heating now, is that just future-proofing, or can it also directly reduce gas consumption?
Thanks in advance for your feedback.
I have a quick question. We will soon be moving into our 80m2 (860 sq ft) condominium and are planning some renovations. The building has an energy rating of D, was built in 1890, but the apartment itself dates from the 1990s (top floor).
Currently, the apartment has a 26 kW gas boiler for heating and hot water. Since we want to replace the flooring, we are considering whether now is the right time to install underfloor heating. We haven’t really budgeted for it, but I figure it’s now or never with the new floor. We were also planning to install an air conditioning system in the medium term, basically a light heat pump.
Question: Would underfloor heating also reduce the gas boiler’s consumption without any other changes? I’m wondering if, in a worst-case scenario, you could just switch on the air conditioning as backup. And if we do install underfloor heating, should we remove the existing radiators or leave them in place?
Does a “proper” heat pump make sense here? For example, on the roof? Or would a combination of the gas boiler, underfloor heating, and air conditioning as backup create an energy mix that doesn’t encourage Putin to invade more countries and doesn’t demand five-figure costs for an unplanned heat pump installation (not to mention getting approval from the homeowners association)?
Basically, if I spend a lot of money installing underfloor heating now, is that just future-proofing, or can it also directly reduce gas consumption?
Thanks in advance for your feedback.
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Benutzer20028 Mar 2022 12:37selterdurst schrieb:
Irrelevant for new builds, but maybe interesting for renovation of older buildings? As far as I know, the supply temperature is at least somewhat lower than with traditional radiators. But thanks for the feedback. I’m looking for alternatives to underfloor heating.
There are also low-temperature radiators, which are not underfloor heating either, but better than the old-style radiators. I would rather install 33-type radiators, which can handle significantly lower supply temperatures (if there is enough space).
If you’re just replacing baseboard heaters with old radiators, you’re spending money without gaining any real benefit. Whether your heating costs are €64 per month or €66.34 per month, in the end it doesn’t matter. The investment will never pay off.
Just my opinion.
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selterdurst28 Mar 2022 18:23Benutzer200 schrieb:
I would rather install 33-type radiators, which can handle significantly lower supply temperatures (if there is enough space).
Because if you only replace baseboard heaters with old radiators, you’re spending money without added value. Whether your heating costs are €64 per month or €66.34 per month, in the end it doesn’t matter. The investment will never pay off.
Just my opinion.That makes a lot of sense. Thanks very much for the feedback.
selterdurst schrieb:
Cutting into the screed is really not an option, and since we want to install the flooring before moving in, why? If you are going to do the floors anyway, doesn't that work out quite well?
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