Top 10 400,000 BTU Natural Gas Pool Heater – Swimming Pool Heaters

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1. Hayward

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Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas

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Hayward #ad - Energy savings: the efficient, industry-leading design reduces circulation pump run time to provide energy savings. Easy-to-use: intuitive front control panel provides easy operation, service and maintenance.

Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required. Corrosion protection: the Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry. Best for: in-ground pools and spas with a surface area up to 1, 200 ft. Premium performance: the hayward universal h-series 400, 000 BTU Natural Gas Heater delivers fast premium heating performance for years of reliable, long-lasting comfort. Where natural gas is available.
BrandHayward #ad
ManufacturerHayward #ad
Height30.6 Inches
Length39.6 Inches
Weight210 Pounds
Width32.8 Inches
Part NumberW3H400FDN
ModelW3H400FDN
Warranty3-Year

2. Raypak

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Raypak 406,000 BTU Digital Electronic Ignition Natural Gas Pool Heater

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Raypak #ad - Built to withstand various weather conditions, perfect solution for environments requiring efficiency, convenience and versatility. Pilot only comes on when there is a call for heat. Intermittent spark ignition pilot safety controls. Please note: item is unable to be shipped to state of California. Part number: 009219 | model number: P-R406A-EN-C. Space-age material means the heater won't retain residual heat after it is turned off, allowing it to be installed without the use of costly metal heat sinks.
BrandRaypak #ad
ManufacturerRAYPAK #ad
Height31 Inches
Length43 Inches
Weight249 Pounds
Width35.3 Inches
Part Number009219
Model009219
Warranty1-Year

3. Hayward

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Propane, Hayward W3H400FDP Universal H-Series 400,000 BTU Pool and Spa Heater

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Hayward #ad - Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required. Energy savings: the efficient, industry-leading design reduces circulation pump run time to provide energy savings.

Easy-to-use: intuitive front control panel provides easy operation, service and maintenance. Premium performance: the hayward universal H-Series 400, 000 BTU Propane Heater delivers premium heating performance for years of reliable, long-lasting comfort. Best for: in-ground pools and spas with a surface area up to 1, 200 ft. Where natural gas is available. Corrosion protection: the Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry.
BrandHayward #ad
ManufacturerHayward #ad
Height30.6 Inches
Length39.6 Inches
Weight214 Pounds
Width32.8 Inches
Part NumberW3H400FDP
ModelW3H400FDP
Warranty3-Year

4. Raypak

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Raypak 406,000 Btu Digital Natural Gas Pool Heater with Cupro Nickel Ray-014941

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Raypak #ad - Part number: 014941. Microprocessor controlled thermostat. Model number: p-r406A-EN-X. Pagoda design ensures heater stays active in harsh weather conditions. Cupro-nickel gas pool and spa heater.
BrandRaypak #ad
ManufacturerRAYPAK #ad
Height30.5 Inches
Length45 Inches
Weight250 Pounds
Width37 Inches
Part Number014941
Model014941

5. Pentair

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Pentair EC462025 MasterTemp 125 125,000 BTU Compact Energy Efficient Swimming Pool and Spa Natural Gas Heater for Small Pools Up to 15,000 Gallons

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Pentair #ad - Great for smaller pools: natural gas heater boasts 125, 000 BTUs, designed for smaller bodies of water up to 15, 000 gallons. Thoughtful, user-friendly design:: rotating digital display allows for any installation rotation and is easy to read; User-friendly indicator lights allow for simple system operation and monitoring; Corrosion and UV-resistant housing deliver durable, lasting use.

Safety features: water pressure and stack flue sensor for overheat prevention, auto shut-off when the temperature exceeds factory limits, and manual shut-off for servicing; Certified for Low NOx emissions.

Specifications: voltage: 120/240v; intake/discharge plumbing: 1. 5-inch; 075-inch gas line up to 50 feet from source not included; Dimensions L x W x H: 31. 5 x 21 x 23 inches; Weight: 80 pounds. Compact and efficient: compact design with 82-percent efficiency as compared to larger pool heaters; Quiet operation makes sure not to impose on leisure pool time.
BrandPentair #ad
ManufacturerPentair #ad
Height0 Inches
Length0 Inches
Weight0 Pounds
Width0 Inches
Part NumberEC-462024
ModelEC-462024
Warranty1-Year

6. Raypak

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Raypak 009218 PR336AENC49 336000 BTU Natural Gas Pool Heater

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Raypak #ad - Backlit LCD Controls. Corrosion-Free Polymer Headers. Integral fin Copper Exchanger Tube. Self-diagnostic Microprocessor Controlled Ignition.
BrandRaypak #ad
Weight230 Pounds
Part Number9218
ModelR009218

7. Raypak

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Raypak 406,000 BTU Natural Gas Millivolt Pool Heater

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Raypak #ad - Model number: p-r406A-MN-C. High-wind resistance. Corrosion-resistant headers. Part number: 009195. Pvc plumbing directly to the heater.
BrandRaypak #ad
ManufacturerRAYPAK #ad
Height31 Inches
Length43 Inches
Weight249 Pounds
Width35.3 Inches
Part Number009195
Model009195
Warranty1-Year

8. Raypak

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Natural Gas, Raypak 105,000 BTU Swimming Pool and Spa Heater

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Raypak #ad - Gas connection is 1/2" npt and measures 4 5/8" off the ground level. Please note: item is unable to be shipped to state of California. Standard 120v 3-prong power cord or can be easily converted to 220v. Designed for easy installation on above ground pools, smaller in-ground pools, and spas. Simple analog thermostat dial for accurate pool and spa temperature setting. Unit measures 27. 5" h x 12" wide x 24" Deep.
BrandRaypak #ad
ManufacturerRAYPAK #ad
Height16 Inches
Length30 Inches
Weight102 Pounds
Width27 Inches
Part Number014779
Model014779

9. Hayward

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Hayward FDXLHXA1250 Heat Exchanger Assembly Replacement for Hayward H250FD Universal H-Series Low Nox Pool Heater

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Hayward #ad - Heat exchanger assembly. Weight 48. 5 pounds. Low nox emissions - Meets Clean Air Quality Standards. 2 inch x 2 1/2 inch cpVC Union Plumbing Connections. Fits hayward universal h-series low nox pool heater model h250fd.
BrandHayward #ad
ManufacturerHayward #ad
Height3 Inches
Length18 Inches
Weight35 Pounds
Width18 Inches
Part NumberFDXLHXA1250
ModelFDXLHXA1250

10. Raypak

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Raypak 406,000 BTU Digital Electronic Ignition Propane Pool Heater

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Raypak #ad - Also features a stainless steel tube sheet, 2 inch CPVC water connections, burner tray and fire tile. Cabinet and the internals are non-corrosive and rust resistant. Features polytuf powder coating, polymer headers, and an all copper-fin-tube heat exchanger. Microprocessor-controlled thermostat can be set precisely to your liking, set it and forget it. 406, 000 btu propane digital pool and spa heater.
BrandRaypak #ad
ManufacturerRAYPAK #ad
Height31 Inches
Length43 Inches
Weight349 Pounds
Width35.3 Inches
Part Number009227
Model009227
Warranty1-Year