ᐅ Heating System Underfloor Heating New Construction Solid House

Hello everyone,

We have almost finalized our plans for a new build in 2018. However, we are now seriously reconsidering the heating system because of many rumors going around.

House: solid construction, 2 floors, no basement, 195 sqm (2,099 sq ft), underfloor heating

Option 1: Ground-source heat pump: 21,500 euros
--> Builder’s favorite
Option 2: Gas + solar for hot water + ventilation system: 18,700 euros
Option 3: Gas + solar for hot water/heating
Option 3: Gas/air-source heat pump hybrid system
Option 4: Air-source heat pump

• Do you have any general recommendations? For us, the total cost over 20 / 25 years (investment + maintenance + operation) would be the decisive factor.
• Our architect advised against a ventilation system due to maintenance and noise concerns. What do you think? Is such a system really necessary or should it be avoided?
• We have often heard that a heat pump with deep boreholes does not work properly—probably if poorly designed?
• Do you also think that a heat pump with deep boreholes is difficult to make cost-effective?
• Would you consider a pure air-source heat pump or a gas/air-source heat pump hybrid system as alternatives?

I would really appreciate your thoughts on this topic. Thank you very much in advance.

Our ventilation system is located in the attic. If you hold your breath and switch off all background noises, you can hear it on the ground floor (though our side-by-side refrigerator is louder, but you usually don’t notice it while watching movies on the sofa).

In the bedroom on the upper floor, it is somewhat louder, but still quiet enough to fall asleep normally.

For the benefit of fresh air when waking up and coming home, it is definitely worth it for all of us.

I would also suspect that your architect has never actually dealt with a ventilation system and is just speaking from hearsay. That’s a pity, really.
I would always recommend one. Maintenance? What maintenance?

Regarding the choice of heating system in general: it has to suit you. You need to be able to rely on the technology.

I would choose option 2 and definitely not build without ventilation.

I would also go with option 2.

In my current building, I have a gas heating system, a masonry heater with a water jacket, and solar thermal panels.

A ventilation system is unbeatable in terms of comfort. Maintenance involves checking and, if necessary, replacing the filters twice a year. This takes about 20 minutes.

From my point of view, I would only take a mix from the different options.