Unfortunately
drilling here is expensive
like one btc per hole.
...
We inquired a geothermal heat pump a few years ago because the idea is brilliant and effective compared to air heat pumps but when the guy started to list expenses we realized we would well end up in the 6 figure range just for drilling the hole, I guess at current corn prices the whole setup would cost over 1 BTC, possibly up to 1.5 easily. An AC costs me <$10k installed and probably like $200-500 per summer for leccy. For heating in winter we spend like ~1200 for oil + ~500 for wood.
That said, the amortization time frame for such an apparatus is well beyond the reach of my mortal residues. Still like the concept and I guess once installed and paid you enjoy (almost) free heating and cooling.
ah i went horizontal loop as i have the land. so 2000 foot loop of pex buried six feet down in my back yard. mucho cheaper than drilling as only needed an excavator to trench 6 feet down, lay the pex and fill it back in.
and at the time we needed to replace our ageing boiler heat system a decade or so ago there were some nice tax rebates and zero percent loans to go with geothermal installs.
That sounds quite straightforward, I guess you'll need at least about 200m of pipes laid out (considering that in our case they wanted to drill down to 150-180m depth, hence the cost) but your solution might possibly work for me in front of the house.
I duckduckgo'd it and it seems they call it here "spiral collectors", though I suspect the efficiency of the spiral setup is probably a bit lower than a hole down to 180m.
I am actually pretty happy with my oil heating as we use it only to create some baseline and warm water - the rest is done with the wood stove. But oil heatings are legally phased out here, since this year you can't replace central elements of an oil heating and 2025 is the last year we're allowed to replace simpler parts so I bought a new oil burner for it and hope it works for another 10yrs.
But once the thing breaks down, I need something with a green stamp on it and I totally despise air heat pumps as I am still convinced that at -15°C they are basically very expensive and ineffective electric heatings - the geothermal stuff on the other hand does make sense to me (yeah, as if I knew shit..).
I personally would have loved a wood heating but she-who-calls-the-shots is concerned about me carrying 5 room meters wood down to the basement every year when I get even older than I already am.