Modernise your old heating for maximum efficiency and up to 70% government funding.
Heating systems over 15 years old often run at efficiencies of just 70–85%. Modern systems reach 95–98% (condensing) or, with heat pumps, even tap free environmental heat. On top of that come rising CO₂ prices that make fossil fuels more expensive year after year, and the German Building Energy Act (GEG) which mandates a gradual switch to renewable energy.
Modernisation pays off concretely if your heating is older than 15 years, energy costs are rising despite moderate consumption, repairs are needed frequently, or you want to increase property value.
We calculate which system pays off most over 20 years for your building.
The BEG funding makes the switch especially attractive: 30% basic funding for renewable energy, plus 20% speed bonus for replacing old fossil heating, plus up to 30% income bonus. In total up to 70% subsidy is possible. The maximum funding amount is €30,000 for the first residential unit. We calculate your individual subsidy and show you the actual share you'll pay.
The Building Energy Act (GEG) requires that, from 2024, newly installed heating systems use at least 65% renewable energy (in new development areas). Transitional periods apply to existing buildings. Heating systems older than 30 years that meet certain criteria are subject to a replacement obligation. We check whether your system is affected, which deadlines apply and which funding options you can use.
We capture building data, current energy consumption, insulation standard and existing heating infrastructure on site.
Comparison of various systems over 20 years: investment, funding, operating cost, CO₂ savings and payback.
Transparent recommendation of the most economical system with a fixed-price quote and detailed funding calculation.
We support the BEG funding application — it must be submitted and approved before construction starts.
Professional removal of the old system and installation of the new one by our own technicians.
Hydraulic balancing, function test, instructions on operation and handover of all documents.
From 15 years a closer look at cost-effectiveness pays off. From 20 years modernisation is usually economically sensible, especially with funding. From 30 years a legal replacement obligation under GEG may apply.
Depending on the starting point, 20–40% of energy costs. Switching from oil to a heat pump it's often up to 50%. We calculate the savings for your building individually.
Up to 70% when switching to renewables (BEG): 30% basic funding + 20% speed bonus + up to 30% income bonus. The maximum funding is €30,000 for the first residential unit.
Oil heating systems over 30 years can be subject to a replacement obligation (GEG §72). New installations of pure oil heating are heavily restricted from 2026. We check your individual situation free of charge.
Gas condensing from approx. €8,000, heat pump (air-to-water) from approx. €18,000, pellet boiler from approx. €20,000 — each before funding. With BEG funding (up to 70%) your share decreases significantly.
Hybrid systems (heat pump + gas) are a great solution especially in poorly insulated older buildings. The heat pump covers 70–80% of demand, gas only kicks in on very cold days. Eligible for funding and flexible.
For a standard heating replacement we plan the work so the interruption is minimal (1–2 days). During the heating season we provide mobile heaters if needed.
Let's find out together. Contact us for a no-obligation consultation.
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