This is our complete guide to the best spa heater gas. In Fact, In picking this spa heater gas, we have considered a lot of factors to find the best out of them. Let us help you make your decision with this spa heater gas that we have personally reviewed for you.

We have spent around 31 hours to find the right option for you and based on our research Etna 77707-0054 Pentair Igniter & Gasket Replacement Kit is our top pick for you. This is one of the top products currently possible in the market. However, if you don’t want to spend extra then we have another great option for you is Smartpool S601P SunHeater Solar Heating System for In Ground Pool. Below is a review of some of the best spa heater gas, together with their extra features and functions. Listed below are some spa heater gas for your budget.

Best spa heater gas

Image
Product Title
Score

Hayward W3H150FDN Universal H-Series 150,000 BTU Pool and Spa Heater, Natural Gas
9.7

Hayward W3H150FDP Universal H-Series 150,000 BTU Pool and Spa Heater, Propane
9.6

EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology
9.1

Smartpool S601P SunHeater Solar Heating System for In Ground Pool
8.9

Pentair 42001-0051S Combination Gas Control Valve Kit Replacement Pool and Spa Heater
8.5

Raypak 206,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
8.1

Etna 77707-0054 Pentair Igniter & Gasket Replacement Kit
7.6

Pentair 075457 Valve Replacement Natural Gas MiniVolt Pool and Spa Heater
7.4

Hayward CSPAXI11 11 Kilowatt Electric Spa Heater
7.1

Pentair 460805 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 400,000 BTU, Heavy Duty
6.6

Hayward W3H150FDN Universal H-Series 150,000 BTU Pool and Spa Heater, Natural Gas


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Hayward W3H150FDN Universal H-Series 150,000 BTU Pool and Spa Heater, Natural Gas

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • EASY TO USE: Intuitive inground pool heater control panel enables easy operation and maintenance. The digital LED display helps maintain pool water temperature while monitoring pool water heater performance with self-diagnostic capabilities
  • MULTIPLE COVERAGE OPTIONS FOR POOLS AND SPAS: This gas pool heater and pool and spa heater suits in-ground pools and spas up to 400 sq ft with a natural gas connection; additional models cover 600, 750, or 1,200 sq ft
  • ENERGY SAVING AND BUILT TO LAST: Efficiently designed pool heater for inground pools helps deliver consistent hot water for swimming pools, reduce pump run time for energy savings, and protect against corrosion caused by unbalanced water chemistry
  • SIMPLE INSTALLATION: This 150,000 BTU Hayward natural gas pool heater allows flexible gas and electric connections on the right or left side, with an H-Series built-in 3/4" gas connection for easier fuel line setup
  • LOW ENVIRONMENTAL IMPACT: Hayward gas pool heaters for inground use are certified for low-NOx emissions and eco-friendly operation, reducing circulation pump run time while delivering a reliable swimming pool heater solution for inground pools

Hayward W3H150FDP Universal H-Series 150,000 BTU Pool and Spa Heater, Propane


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Hayward W3H150FDP Universal H-Series 150,000 BTU Pool and Spa Heater, Propane

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • EASY TO USE: Intuitive front control panel for easy operation, service, and maintenance on this propane water heater; the digital LED display maintains water temperature, monitoring the heater’s performance with self-diagnostic capabilities
  • MULTIPLE COVERAGE OPTIONS FOR POOLS AND SPAS: This inground pool heater model supports efficient water warming for in-ground pools and spas up to 1,200 sq ft with a propane gas connection; other models cover 400, 600, or 750 sq ft
  • ENERGY SAVING AND BUILT TO LAST: Designed for pool owners, this gas pool heater reduces circulation pump runtime for energy savings. Exceptional protection against corrosion and premature failure caused by unbalanced water chemistry.
  • SIMPLE INSTALLATION: This pool heater for inground pools features a 150k BTU heating capacity and allows you to configure water, gas and electric connections on either the right or left side for enhanced installation flexibility
  • LOW ENVIRONMENTAL IMPACT: Hayward propane gas spa and swimming pool heaters support low-NOx emissions and are eco-friendly, making for a safe pool heater for inground pools

EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology


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EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Flow Activation
  • Eco smart Pool Heaters are compact and easy to install for a new or existing pool
  • Set your temperature digitally to increments of 1-Degree. Set it and forget it.
  • Compatible with Eco smart Remote Control. Activation Flow - 12 +/- 2 GPM
  • Can be used as an alternative to or booster to heat pump.

Smartpool S601P SunHeater Solar Heating System for In Ground Pool


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Smartpool S601P SunHeater Solar Heating System for In Ground Pool

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Keep your pool warm with a polypropylene heat collector. Direct Flow System - One Header Hole for Each Heating Tube
  • Solar heater features 80 square feet of solar panels
  • Pool accessory is perfect for heating any in-ground swimming pool
  • Panel array measures 4 feet wide x 20 feet long. Raises Pool Water Temperature 6-10°F (4-6°C)
  • Installation kit required (Sold Separately)

Pentair 42001-0051S Combination Gas Control Valve Kit Replacement Pool and Spa Heater


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Pentair 42001-0051S Combination Gas Control Valve Kit Replacement Pool and Spa Heater

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Genuine OEM Pentair Replacement Parts
  • Burner System Combination Gas Control Valve Kit Replacement

Raypak 206,000 BTU Digital Electronic Ignition Natural Gas Pool Heater


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Raypak 206,000 BTU Digital Electronic Ignition Natural Gas Pool Heater

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Built to withstand various weather conditions, perfect solution for environments requiring efficiency, convenience and versatility.
  • Intermittent spark ignition pilot safety controls. Pilot only comes on when there is a call for heat.
  • 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.
  • Part Number: 009216 | Model Number: P-R206A-EN-C
  • High efficiency, Small footprint

Etna 77707-0054 Pentair Igniter & Gasket Replacement Kit


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Etna 77707-0054 Pentair Igniter & Gasket Replacement Kit

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Igniter Replacement Kit 77707-0054
  • Fits Pentair Sta-Rite Max-E-Therm Pool & Spa Heater
  • Fits Pentair Master Temp Pool & Spa Heater
  • Same OEM Igniter factory test fired

Pentair 075457 Valve Replacement Natural Gas MiniVolt Pool and Spa Heater


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Pentair 075457 Valve Replacement Natural Gas MiniVolt Pool and Spa Heater

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Gas Valve, Pentair Minimax/MMXPlus/PowerMax 150,400, Nat.,MV.

Hayward CSPAXI11 11 Kilowatt Electric Spa Heater


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Hayward CSPAXI11 11 Kilowatt Electric Spa Heater

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Heater on indicator light
  • 304 stainless steel tank
  • 304 stainless steel threaded head, safety sensor electric heating element
  • Service-ease design gives simple access to internal controls

Pentair 460805 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 400,000 BTU, Heavy Duty


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Pentair 460805 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 400,000 BTU, Heavy Duty

 out of stock
Amazon.com
as of February 23, 2026 7:49 am

Features

  • Heats up fast so no long waits before enjoying your pool or spa
  • Best-in-class energy efficiency. Tough, rustproof exterior handles the heat and weathers the elements
  • Manual gas shut-off when service is required
  • MasterTemp is certified for low NOx emission and outperforms industry standards

The above were some of the best spa heater gas for you in your budget, so you can’t go wrong with your purchase. If you didn’t find your desired one then check out EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology is also the recommended item in the store.