ᐅ Replace oil heating with a heat pump or pellet heating system? Alternatives?

Hello,
In our house, built in 1978, the oil heating system is defective. Although it still works, it is no longer reliable. Therefore, a replacement is necessary. Question: What is a sensible alternative? My initial research showed that a heat pump is not economical if there is no underfloor heating installed. We want to carry out as few renovation measures as possible. Does that mean only a pellet heating system is an option?

What exactly was renovated? Radiators are not inherently a disqualifying factor for a heat pump.

BenutzerPC schrieb:

My initial research showed that a heat pump is not economical,

How much oil have you used on average over the past few years for heating and hot water? What flow temperature was necessary for the radiators? Please also upload a photo of one of the radiators.
That will allow for a more accurate assessment.

This is my parents' house. I still need to ask for the exact details. Given the current situation, I’m trying to familiarize myself with the topic first. I already thought, as described above, that radiators in themselves are a disqualifying factor for a heat pump. Generally, the question for me is: What alternatives to oil heating are being considered when a replacement is needed and major renovation work is not an option?

Possibly, one might have to resort to an oil hybrid heating system. As I understand it, oil heating will still be allowed from 2026 if a renewable component is added, for example, solar thermal systems. But honestly, with an existing house like this, how could that be feasible without significant modifications? For example, there aren’t even pipes or shafts available to run from the roof to the heating cellar.

Nida35a schrieb:
How much oil have you typically used over the past few years for heating and hot water? What flow temperature was needed for the radiators? Please also share a photo of one of the radiators. That will allow for a more accurate assessment.

These questions can already be answered based on the house’s year of construction! (Little to no modernizations)

BenutzerPC schrieb:

Basically, the question for me is: What alternatives to an oil heating system are available if a replacement is needed and major renovation work is not planned.
Maybe you have to resort to an oil hybrid heating system then.

In an unrenovated building with radiators: oil, gas, pellets, all are possible as hybrids with a heat pump. But it certainly won’t be cheaper than before.
Honestly, I would consider investing money to renovate properly and reduce consumption, then a heat pump could also be suitable.