ᐅ Energy Saving Regulation 2014 + Gas Condensing Boiler without Solar + Mechanical Ventilation with Heat Recovery
Created on: 11 Jul 2014 18:40
G
GrymHello,
to comply with the energy saving regulations, you either have to build with renewable energy or the energy demand must be below a certain value, right? In the latter case, insulation can be omitted.
My goal is to keep the investment costs as low as possible. According to my information, geothermal energy is not feasible in the planned construction area where we want to build. This leaves a gas condensing boiler and an air-to-water heat pump. As far as I know, the investment costs for a gas condensing boiler are lower than for an air-to-water heat pump.
For a gas condensing boiler to comply with the 2014 energy saving regulations, either solar thermal or insulation is required. Which option would be more cost-effective here? It is often said that solar thermal systems are not financially viable – but insulation to meet the energy saving regulations (minus 15 percent, correct?) should definitely pay off, right?
So we are talking about a gas condensing boiler without a solar thermal system, but with external wall insulation (ETICS - External Thermal Insulation Composite System) to comply with the 2014 energy saving regulations. For this insulation, of course, I am concerned about moisture, mold, etc., so ideally this should be combined with a controlled ventilation system with heat recovery.
Additionally, there will be underfloor heating, which according to my research costs the same or only slightly more than regular radiators.
Is this all a feasible and sensible approach? Gas condensing boiler without solar thermal system, ETICS to meet the energy saving regulations, and controlled ventilation with heat recovery to prevent mold and ensure a comfortable indoor climate. Plus underfloor heating.
The goal is to keep investment costs as low as possible. But the operating costs should also make sense with such a well-insulated building, right? According to my calculations, only a few hundred euros per year will remain for natural gas.
Oh, and the building material should not be aerated concrete due to sound insulation reasons. So likely options are Poroton and sand-lime brick, correct? Which would be cheaper? What are the advantages and disadvantages here if you want to build a house according to the energy saving regulation standard? I mean meeting the energy saving regulation standard without renewable energy.
to comply with the energy saving regulations, you either have to build with renewable energy or the energy demand must be below a certain value, right? In the latter case, insulation can be omitted.
My goal is to keep the investment costs as low as possible. According to my information, geothermal energy is not feasible in the planned construction area where we want to build. This leaves a gas condensing boiler and an air-to-water heat pump. As far as I know, the investment costs for a gas condensing boiler are lower than for an air-to-water heat pump.
For a gas condensing boiler to comply with the 2014 energy saving regulations, either solar thermal or insulation is required. Which option would be more cost-effective here? It is often said that solar thermal systems are not financially viable – but insulation to meet the energy saving regulations (minus 15 percent, correct?) should definitely pay off, right?
So we are talking about a gas condensing boiler without a solar thermal system, but with external wall insulation (ETICS - External Thermal Insulation Composite System) to comply with the 2014 energy saving regulations. For this insulation, of course, I am concerned about moisture, mold, etc., so ideally this should be combined with a controlled ventilation system with heat recovery.
Additionally, there will be underfloor heating, which according to my research costs the same or only slightly more than regular radiators.
Is this all a feasible and sensible approach? Gas condensing boiler without solar thermal system, ETICS to meet the energy saving regulations, and controlled ventilation with heat recovery to prevent mold and ensure a comfortable indoor climate. Plus underfloor heating.
The goal is to keep investment costs as low as possible. But the operating costs should also make sense with such a well-insulated building, right? According to my calculations, only a few hundred euros per year will remain for natural gas.
Oh, and the building material should not be aerated concrete due to sound insulation reasons. So likely options are Poroton and sand-lime brick, correct? Which would be cheaper? What are the advantages and disadvantages here if you want to build a house according to the energy saving regulation standard? I mean meeting the energy saving regulation standard without renewable energy.
If the exterior wall is thick enough (36cm or more (14 inches)), you might be able to skip the external thermal insulation composite system (ETICS). It depends on the type of brick used. This needs to be calculated.
I agree with your considerations regarding the gas condensing boiler and the air-to-air heat pump. We came to the same conclusion.
Controlled ventilation systems with heat recovery were not mandatory under the 2009 Energy Saving Ordinance (EnEV). What about the 2014 Energy Saving Ordinance? No idea. If not required, this technology is a matter of personal preference.
I agree with your considerations regarding the gas condensing boiler and the air-to-air heat pump. We came to the same conclusion.
Controlled ventilation systems with heat recovery were not mandatory under the 2009 Energy Saving Ordinance (EnEV). What about the 2014 Energy Saving Ordinance? No idea. If not required, this technology is a matter of personal preference.
Mechanical ventilation with heat recovery is probably not mandatory, but I considered it because these new buildings tend to be tightly sealed. We currently live in an older building and find the indoor climate very comfortable. Due to humidity and other factors, measures must be taken in new constructions to restore this comfortable climate, which you would already have without the new building standards anyway. 🙂
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