oil to geo thermal

studdlymurphy

Hi All,
I have an oil heating system. No zones. Once the oil is on it is heating the water and rads. Rads are on thermostatic valves.
The boiler is from the 80's. So was thinking renewing it for a modern more efficient boiler but then got thinking of geo thermal.
My question is can I swap the oil boiler for a geothermal heat pump? I have the ground to work either a horizontal or vertical collector.
What are the pros and cons of my idea?
Thanks

Wearb

Its unlikely that you will be able to use geothermal alone with rads. These low temperature heat sources work best with under floor heating and a high level of insulation and airtightness.

cruiser202006

Your going to have to put in bigger rads if you go with geothermal. Other option is a high temperature air source heat pump like a panasonic or hitach do a split system which can get up to 80 degrees Both still very efficient. Although if your rads are from the 80's you could probably do with replacing them anyway.

DGOBS

Firstly...spend your money on isolation, then a bit of insulation...some more insulation..and when you can't insulate any more, then look at your boiler and zoning your system.

No point in having an ultra efficient system, but the house is bleeding all the heat away.

studdlymurphy

Insulation is being done at the minute and airtightness is done as far as I am willing to go. All the doors and windows were done last year I rewired most of the lights and sealed an insulated box above each I have sealed the conduits leading to all sockets and comms ports. Think I'm pretty good that way. Walls are all pumped and there will be 400mm of wool in the attic in the coming weeks. Probably won't take much to heat the place over the winter this year I hope.

Couchpotato82

Upgrade boiler and zone system into 3 separate zones. €5k or thereabouts depending on whether DHW cylinder needs to be upgraded or not. Heat pump won't give you the same return on investment in my opinion.

studdlymurphy

The pipes are all in the concrete floor it would be a big ripping job to change them so would prefer to avoid. I could possible run a 2 zone system to the rads and hot water think it was suggested here before and I liked the sound of it then.