After 100+ hours of research & testing, we’re comfortable recommending the Eccotemp 20H as the best overall tankless propane water. This model’s Generation 3 computer system is second to none in its ability to control incoming and outgoing water temperatures. With core specifications including a 6.0 GPM flow rate and 150,000 BTU heating capacity, you certainly won’t be disappointed when you install this industry-leading model in your home. Read further for our findings on other top-rated water heaters.


Note: see our reviews for natural gas powered models here.