Construction project - ventilation system, heating - your experiences?

2019-12-17 11:26:14

Is all the fuss about hydraulic balancing, deactivating thermostats & co. with a gas boiler even worth it?

Of course, every kW not consumed is hard cash in your pocket.

2019-12-17 11:27:25

Of course, every unused kW is cash in your pocket.

Of course. But if I save only €3 per month in the end, I might not go through the rather extensive optimization process.

2019-12-17 11:33:26

Since you are a fan of gas heating. If in 10 years gas prices are high and you switch to a heat pump now, that reads as a problem. Why?

I don't quite understand the post, I would already rely on a heat pump today for many reasons: if possible and if financially sensible depending on the general contractor/tradespeople/own possibilities (purchase price). If you have no time/desire or only get overpriced offers for the heat pump, then gas. At the very least, the underfloor heating should be designed for no more than about 30° flow temperature so that switching later is possible.

2019-12-17 11:41:38

Of course. But if I end up saving 3€ per month, I might not go through the rather extensive optimization process.

It's your decision and completely legitimate. However, only you can calculate/know how much you could save. Because every house is different and the savings effects depend heavily on the behavior of the residents.

2019-12-17 11:41:39

Heating: We have a modulating air-to-water heat pump from Novelan, indoor installation. LICV 8.2R1/3. I of course hear it in the utility room, in the kitchen very quietly when listening closely through the door. Not at all in the living room directly adjacent to the utility room (timber frame construction). Of course also directly at the air outlets outside. Our neighbors have not noticed anything yet and we also do not sit outside in winter. Investment costs were high, but I couldn't get gas approved with my "government." We have only had a separate electricity meter for 6 weeks now and since then have used 200 kWh of electricity for heating and hot water and produced about 1000 kWh of heat. I am quite satisfied with that. KfW 40, 146 sqm without basement, NAT - 12, living room 22°C+ !, wife gets cold quickly...

That means 5 kWh per day in December? I wonder how that is possible. Normally the hot water alone requires that. And especially in December you have to heat a lot. The house is very small, but still? We heat 210 m2 and KFW55 with a similar system and need about 25 kWh per day. I find that more realistic.

2019-12-17 11:43:52

Naturally. But if in the end I save 3€ per month, I might not go through the rather extensive optimization process after all.

I would probably also save myself that much effort with gas. For example, if you can operate the bathroom and living room completely without a thermostat, then the heating curve is not entirely wrong. At least I would do that. You do the construction once and never again.

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Construction project - ventilation system, heating - your experiences?

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