r/geothermal↗
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.
9.6k subscribers36 posts / mo in Sep 202622 authors / mosince 2012
r/geothermal has 9.6k members (+24% over the last 12 months). It gets about 36 posts a month from 22 people. Top topics: Alberta Oil and Energy, Heating and Cooling Solutions and Grass Troubleshooting.
When to post on r/geothermal
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How r/geothermal has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/geothermal
Top topics
Share of the subreddit's posts
- Alberta Oil and Energy0.4%
- Heating and Cooling Solutions0.2%
- Grass Troubleshooting0.2%
- Solar Panels0.2%
- Cooling Systems0.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- ScienceDirect
Everything else about r/geothermal
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research