250,000 BTU Pool Heaters and Up

3 250,000 BTU pool heaters and up from Raypak, Pentair and Hayward. Prices run $4,538 to $4,847.

Pool heaters whose title states a heating output of 250,000 BTU or more.

We do not pick by hand: a pool heater is here because its listed specs pass the checks.

Raypak

Natural gas, 333000 Heating output, Natural gas

+333,000 BTU output for faster heating of larger pools

+Runs on natural gas

+Built for 2,000 to 6,000 foot elevation

No price recorded yet.

Raypak

Natural gas, 333000 Heating output, Natural gas

+333,000 BTU output for heating a pool

+Runs on natural gas

+Low NOx design

$4,847.11

as of 11/04/2026 00:49 PST - Details

Raypak

Natural gas, 333000 Heating output, Natural gas

+Runs on natural gas

+333,000 BTU output for mid-size pools

+ASME cast iron construction

$4,538.00

as of 11/04/2026 00:49 PST - Details

Compare specs

Heater type	Heating output	Fuel	Spec score	Price
Natural gas	333000	Natural gas	n/a	No current price
Natural gas	333000	Natural gas	n/a	$4,847.11 as of 11/04/2026 00:49 PST - Details
Natural gas	333000	Natural gas	n/a	$4,538.00 as of 11/04/2026 00:49 PST - Details

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.