r/geothermal is a subreddit with 9k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses geothermal, waterfurnace, energy, drilling, and heat pump.
A subreddit focused on both geothermal and geoexchange systems, primarily for residential heating and cooling (e.g. ground source heat pumps). Larger projects and other methods of using the earth for heat exchange are welcome, though less likely to spark broader discussion. All civil discussions aren't just welcome but wanted.
Popular Themes in r/geothermal
#1
Solution Requests
: "From a legislative standpoint, what can be done to drive residential Geothermal as a solid option for lower income households as a way to combat climbing energy prices?"
5 posts
#2
Advice Requests
: "Building a home. Is geothermal worth the cost?"
4 posts
#3
News
: "NYSERDA Announces $5 million available to support Innovative Building Solutions -- including geothermal heat pumps"
1 post
Popular Topics in r/geothermal
#1
Geothermal
: "Geothermal won't make your house explode -- unlike gas service...."
191 posts
#2
Waterfurnace
39 posts
#3
Energy
: "Geothermal Startup Uses Refrigerants, Not Water, to Make Energy"
26 posts
#4
Drilling
: "Fervo Energy Drills 15,000', 500°F Geothermal Well in Just 16 Drilling Days"
17 posts
#5
Heat Pump
: "Replace WF unit?"
15 posts
#6
System
: "If you're considering purchasing a new System, be wary of Dandelion Energy."
14 posts
#7
Hvac
11 posts
#8
Cooling
10 posts
#9
Heat
: "Geothermal Startup Uses Refrigerants, Not Water, to Make Energy"
8 posts
#10
Loop
7 posts
Member Growth in r/geothermal
Yearly
+2k members(26.7%)
About
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Last updated: July 13, 2026