ᐅ Condensing Gas Boilers and Solar Thermal Systems in New Construction: What Are the Benefits?
Created on: 22 Jun 2012 13:07
P
praaluno
Hello everyone,
does it make sense to combine a gas condensing boiler with solar thermal in a new build? Our developer always praises an air-to-air heat pump. From my understanding of physics, this seems rather inefficient to me. He argues there have been significant technological advancements in the last two years.
The plan is for a KfW 70-standard house.
Thank you very much for your answers.
does it make sense to combine a gas condensing boiler with solar thermal in a new build? Our developer always praises an air-to-air heat pump. From my understanding of physics, this seems rather inefficient to me. He argues there have been significant technological advancements in the last two years.
The plan is for a KfW 70-standard house.
Thank you very much for your answers.
And district heating is something that would feel too unpredictable for me 😉 Of course, it always depends on the provider... There are district heating suppliers who charge exorbitant prices and produce heat in an "old-fashioned" way...
In principle, district or local heating is one of the most sensible options for me... A large combined heat and power plant that generates electricity and heat from renewable energy sources (biomass, landfill gas, etc.) is superior in terms of efficiency and environmental impact compared to most heating systems... Additionally, you don’t need space for a heat pump or similar equipment, there is no noise pollution, no risk of device breakdown, and the investment costs are minimal (which usually have to be financed!).
By the way, in my opinion, the dependency with heat pumps is similarly significant... Sure, you can choose your electricity provider, but if everyone raises prices by 30%, you’re stuck as well ^^. And if you have been following recent energy policies, it’s clear that electricity prices will rise significantly... Our district heating provider, however, hasn’t increased rates for years and maintains a stable price of 3.5 cents/kWh.
Basically, both options are possible for a KfW 70 house. The two systems mainly differ in their energy source, installation location, and investment costs. You can choose between natural gas and electricity, with the system installed inside the house (gas condensing boiler) or on the property (heat pump), and costs of around 5000 € (natural gas) or significantly more!
The decision should be made considering your own usage behavior, the location, the building physics conditions of the property, and potential future technical and economic developments. There are quite a few factors to consider, which are difficult for a homeowner to fully assess. Professional advice from an energy consultant is necessary here, especially if the person providing the energy performance certificate for the property cannot offer this support.
Best regards
Erik
The decision should be made considering your own usage behavior, the location, the building physics conditions of the property, and potential future technical and economic developments. There are quite a few factors to consider, which are difficult for a homeowner to fully assess. Professional advice from an energy consultant is necessary here, especially if the person providing the energy performance certificate for the property cannot offer this support.
Best regards
Erik
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