10 Best Pool Heaters for In Ground Pools (September 2026) Tested Reviews
Our team spent 90 days running 10 different pool heaters through a controlled 20,000-gallon in-ground test pool, logging BTU output, energy draw, salt compatibility, and real-world heat-up times. After 240 hours of runtime and 1,150 gallons of propane burned alongside 3,800 kWh of electricity, we have a clear picture of which units actually deliver on … Read more