ᐅ Compliance with the 2016 Energy Saving Ordinance using the following heating system

Created on: 7 Jan 2016 09:40

Hello everyone,

I also need to start dealing with the heating system soon. I keep reading in the forum that it’s becoming difficult for gas boilers to comply with the new Energy Saving Ordinance 2016.

I have come up with the following concept and would like to hear your opinion on it.

General information about the house:
170 m² (1830 ft²) over 2 full floors + hip roof
Exterior wall: 36.5 cm (14.4 inches) Ytong PP-2 0.35 with thermal conductivity λ=0.08, U-value = 0.21 W/(m²K)
No additional insulation
Insulated ground slab

Heating: (Estimated costs)
Gas connection = 2500 €
Gas boiler 20 kW = 3000 €
Mechanical ventilation with heat recovery = 8500 €
Solar thermal system 5 m² (54 ft²) = 6000 € (Possible/useful on a 22° hip roof?)
Underfloor heating = 4000 €
__________
Total cost: 24,000 € (Realistic price?)

Would this setup make sense in your opinion, or have I made a fundamental mistake?

Regards
D.Gerner

Bieber08157 Jan 2016 11:42

D.Gerner schrieb:
I chose gas because, as I read in the forum, heat pumps have higher upfront costs.

This is not generally true and can be different in individual cases. A gas condensing boiler is usually less expensive to purchase than a heat pump, but that’s not the whole story. It depends on the overall system (considering the legal framework, where gas is often viewed negatively and electricity positively), which includes the gas connection and compensatory measures required by the Energy Saving Ordinance and the Renewable Energy Heat Act (often solar thermal systems).

Hausbau Re7 Jan 2016 17:00

I pay 8,500€ for heating for a 150 sqm (1,615 sq ft) house, including a central controlled ventilation system with heat recovery, 4,700€ for underfloor heating, and 21,500€ for a ground-source heat pump including a 120 m (394 ft) borehole, according to the offer. I can still choose the system provider, either Vaillant, Viessmann, or Wolf.

Which company would you choose for both?

D.Gerner5 Apr 2016 10:34

Originally planned:
Gas heating
Underfloor heating
Solar thermal system
Mechanical ventilation with heat recovery

Could the solar system be omitted?
Or would the heating setup then no longer comply with the Energy Saving Ordinance 2016?

Goldi091118 May 2016 23:58

#10

Has this question already been answered elsewhere? I am currently having a hard time deciding between gas and geothermal energy.

sirhc9 May 2016 14:44

#11

D.Gerner schrieb:
Originally planned:
Gas heating
Underfloor heating
Solar thermal
Mechanical ventilation with heat recovery

Is it possible to omit the solar system?
Or would the heating setup no longer comply with the Energy Saving Ordinance 2016?

We planned it exactly like that (gas without solar, underfloor heating, mechanical ventilation with heat recovery). However, we submitted the building permit application shortly before the end of the year, so the previous version of the Energy Saving Ordinance still applies to us. I believe that in the current version, gas heating without solar is no longer allowed.

oleda2229 May 2016 15:59

#12

The Energy Saving Ordinance does not prohibit the use of gas as an energy source for heating, nor does it require a solar system if gas is used. It is up to the builder and their assistants to decide on the concept with which the Energy Saving Ordinance is fulfilled.

For gas, the currently valid Energy Saving Ordinance ST often appears to be the "lesser evil" in many cases, if gas is still chosen at all...

ᐅ Compliance with the 2016 Energy Saving Ordinance using the following heating system

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