Inground Pool Heaters

4 inground pool heaters from Hayward, Raypak, ACiQ and more. Prices run $2,699 to $4,499.

Pool heaters whose title names inground pools.

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

Hayward

Natural gas, 150000 Heating output, Inground, Natural gas

+150,000 BTU output for heating inground pools

+Runs on natural gas fuel

+Made for inground pools

−Requires a natural gas line connection

$2,999.00

as of 11/03/2026 23:21 PST - Details

Raypak

Natural gas, 400000 Heating output, Inground, Natural gas

+400K BTU output for heating larger inground pools

+Runs on natural gas fuel

+Built for inground pool and spa use

−Requires a natural gas line rather than electric hookup

$4,298.99

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

Hayward

Natural gas, 135000 Heating output, Inground, Natural gas

+135,000 BTU output for inground pool heating

+Runs on natural gas fuel

+Gas-fired design heats quickly regardless of outdoor temperature

−Gas-fired heaters need a natural gas line connection

$2,699.00

as of 11/03/2026 23:21 PST - Details

Pentair

Natural gas, 400000 Heating output, Inground

+Rated at 400,000 BTU for inground pool heating

+Runs on natural gas fuel

+Suitable for both pools and spas

$4,499.00

as of 11/04/2026 00:37 PST - Details

Compare specs

Heater type	Heating output	Pool type	Spec score	Price
Natural gas	150000	Inground	n/a	$2,999.00 as of 11/03/2026 23:21 PST - Details
Natural gas	400000	Inground	n/a	$4,298.99 as of 11/04/2026 00:49 PST - Details
Natural gas	135000	Inground	n/a	$2,699.00 as of 11/03/2026 23:21 PST - Details
Natural gas	400000	Inground	n/a	$4,499.00 as of 11/04/2026 00:37 PST - Details

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