Can a geothermal heating system be used with hot water (raidient) heat or does it have to be forced air?

We currently have an oil boiler for our heating system and use baseboard radiators. Can we continue to use baseboard heat if we install geothermal heating system? Asked by newwolf 46 months ago Similar questions: geothermal heating system hot water raidient heat forced air Home.

Similar questions: geothermal heating system hot water raidient heat forced air.

Yes, but at some cost and losses. It CAN be done but at some cost, both in terms of money and efficiency. If you go geothermal you need a heat pump, and what a heat pump basically does is concentrate heat, from your pickup which has loads of volume but a low concentration and into your heating system which has less volume but needs more concentration.

The trouble with using geothermal to feed baseboard heaters is that the baseboard heaters needs to be fed with a rather high temperature to work properly, which means that the heat pump must work hard and well to be able to concentrate that kind of temperatures out of the pickup loop. It's easier to use geothermal to power a water-carried floor heating system. The bigger area of the floor heating system as compared to the baseboard heaters enables the heated floor to be able to work properly at a much lower temperaure of the input water.

If I remember correctly a heated floor will operate from as low feed temperatures as 45 deg C, while baseboard radiator requires around 20-30 deg C higher feed temperatures.

If your geothermal system is hot water based, then it should be easy. All you need is a water to water heat exchanger, and you're in business. It may either supplement, or replace the oil boiler depending on how much geothermal energy you have available.

You will need to research the logistics, but it should be doable.

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