When you buy through our links, we may earn a commission. Learn more ›
Wiki Shopping
Wiki Shopping
TipsLearnAbout
Wiki Shopping

399,000 BTU Pool Heaters

All Pool Heaters

7 399,000 BTU pool heaters. Most cost $5,761 to $7,344, and half cost less than $5,864.

All filtersFilters (1)×
Heating output: 399000  ×Clear all
BrandRaypak7
Heater typeNatural gas6Propane gas1
Heating output3990007
FuelNatural gas6Propane1
Clear allShow 7 Pool Heaters
Heating output: 399000  ×7 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
Raypak

Propane gas, 399000 Heating output, Propane

+Rated at 399,000 BTU for larger pools
+Runs on propane gas fuel
+Digital controls for setting temperature
−Requires a propane gas supply
$5,761.10
as of 11/04/2026 00:49 PST - Details
Raypak

Natural gas, 399000 Heating output, Natural gas

+Large 399K BTU output for heating bigger pools
+Runs on natural gas
+Low NOx design
$5,861.02
as of 11/04/2026 00:49 PST - Details
Raypak

Natural gas, 399000 Heating output, Natural gas

+399,000 BTU output for high heating capacity
+Runs on natural gas
+Cast iron ASME construction
No price recorded yet.
Raypak

Natural gas, 399000 Heating output, Natural gas

+Large 399k BTU output for heating bigger pools
+Runs on natural gas
+Digital controls for setting temperature
$5,758.15
as of 11/04/2026 00:49 PST - Details
Raypak

Natural gas, 399000 Heating output, Natural gas

+Large 399K BTU output for heating bigger pools
+Runs on natural gas
+Cupro-nickel heat exchanger
$7,308.00
as of 11/04/2026 00:49 PST - Details
Raypak

Natural gas, 399000 Heating output, Natural gas

+Large 399K BTU output for heating bigger pools
+Runs on natural gas
+Low NOx design
$5,867.00
as of 11/04/2026 00:49 PST - Details
Raypak

Natural gas, 399000 Heating output, Natural gas

+399,000 BTU natural gas output for faster heating
+Digital controls for setting the temperature
+Electronic ignition for starting the heater
$7,344.00
as of 11/04/2026 00:49 PST - Details

Compare specs

pool heaterHeater typeHeating outputFuelSpec scorePrice
Propane gas399000Propanen/a$5,761.10
as of 11/04/2026 00:49 PST - Details
Natural gas399000Natural gasn/a$5,861.02
as of 11/04/2026 00:49 PST - Details
Natural gas399000Natural gasn/aNo current price
Natural gas399000Natural gasn/a$5,758.15
as of 11/04/2026 00:49 PST - Details
Natural gas399000Natural gasn/a$7,308.00
as of 11/04/2026 00:49 PST - Details
Natural gas399000Natural gasn/a$5,867.00
as of 11/04/2026 00:49 PST - Details
Natural gas399000Natural gasn/a$7,344.00
as of 11/04/2026 00:49 PST - Details

Before you buy

Other Heating output options

Hot Tubs194Pool Cleaners262Pool Pumps73Saunas1,505Pool Thermometers48Pool Chemicals & Test Kits61Handheld Pool Vacuums66Pool Brushes62Pool Maintenance Kits58Pool Vacuum Heads67Pool Skimmers & Nets65DE Pool Filters61

Popular filters

Natural Gas Pool Heaters42Pool Heaters: Natural Gas41Heat Pump Pool Heaters28Pool Heaters: Propane23Pool Heaters for Inground Pools12266,000 BTU Pool Heaters10400,000 BTU Pool Heaters10Pool Heaters for Inground and Above-Ground Pools9

Pool Heaters by use

Inground Pool Heaters20Above Ground Pool Heaters12250,000 BTU Pool Heaters and Up48

Related product types

266,000 BTU Pool Heaters10400,000 BTU Pool Heaters10

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