Away from fossil fuels - House from 1999

When burning longer-chain hydrocarbons, dust particles are always produced in the exhaust gases. That is why newer diesel vehicles have a particulate filter.

Exactly! And that is why modern pellet heating systems also have a particulate filter/separator. I maintain: In older buildings, where a heat pump simply doesn't make sense or where the conversion is so complex and not economical (grey energy), a pellet heating system is the most environmentally friendly alternative if you want to move away from fossil fuels.

I can only keep emphasizing: Environmentally, that is from a CO2 perspective, burning wood is a stillbirth and rather worse than all other fossil fuels.

That there was marketing behind it is already annoying.

I can only keep emphasizing: environmentally, meaning from a CO2 perspective, burning wood is a stillbirth and even worse than all other fossil fuels.

That marketing has happened is really annoying.

Why should it be worse than an oil heating system?

Why should it be worse than an oil heating system?

One destroys a CO2 sink and rapidly releases the CO2 bound in it with wood. For oil, only the latter applies – however, extraction and refining additionally produce CO2. Overall, it never works out well for wood.

Hey! I know I'm late, but recently someone in my family replaced an oil heating system with an air-to-water heat pump. They naturally have a much higher flow temperature than we do in the new building, and that is probably correspondingly energy-intensive, but the house is much older (from the 70s), and they only replaced 2 radiators – others were already replaced in the years before. So the radiators are roughly up to date. They want to catch up on insulation next year, and new windows are still coming. Otherwise, it works for now. They have a lot of photovoltaics and a [Hauskraftwerk], so they at least finance part of the heating costs through that.

I would really be interested to know how the electricity bill has changed there. On paper, actually very suboptimal for a heat pump (no insulation, old windows, you don't mention anything about underfloor heating).