Best Pool Heater Inground 2021 - Top 10 Picks

This is the ultimate buyer's guide to finding the right pool heater inground to suit your needs. We review the 10 bestpool heater inground on the market so you know that your next decision will be a smart one!

When you're trying to select the good pool heater inground, there are a lot of factors to consider. This page has everything you need to know in one place.

This guide will help you avoid the pitfalls that come with researching pool heater inground.

You don't have to try out every pool heater inground to find one that meets your needs. After extensive research and hours of in-person tests, we've found the best pool heater inground to be EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology. There are a lot of sub-par products out there, but this product is one of the highest quality you'll find. Next best option is Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump for In-Ground Pools.

Choosing the pool heater inground can be a daunting task, especially if you're doing it for the first time. Here's what we recommend based on our extensive research. We've compiled a list of the highest rated pool heater inground. The following products are some of the best you can get right now.

List of Top 10 Pool Heater Inground

Review of Best Pool Heater Inground

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

  • 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.

2. Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump for In-Ground Pools

  • BEST FOR: In-ground pools that are used regularly and benefit from maintaining an ideal consistent temperature. Non-corrosive design makes it durable for coastal climates.
  • ECONOMICAL HEATING: Using the surrounding air to heat the pool, HeatPro is more economical than propane, natural gas and electric heaters for maintaining the ideal water temperature.
  • UNPARALLELED DURABILITY: Ultra Gold corrosion-resistant technology provides unparalleled durability, even in harsh coastal environments.
  • CORROSION RESISTANT: Titanium heat exchanger ensures maximum heat transfer and provides excellent salt water and chemical corrosion resistance. UV-resistant body panels are impervious to corrosion and deterioration
  • TRUSTED BRAND: With over 80 years of experience, Hayward is an industry leader in manufacturing advanced pool equipment.

3. 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

  • GREAT FOR SMALLER POOLS: Natural gas heater boasts 125,000 BTUs, designed for smaller bodies of water up to 15,000 gallons
  • 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
  • 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; 0.75-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

4. Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas

  • BEST FOR: In-ground pools and spas with a surface area up to 400 ft. where natural gas is available. Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required.
  • PREMIUM PERFORMANCE: The Hayward Universal H-Series 150,000 BTU Propane Heater delivers premium heating performance for years of reliable, long-lasting comfort.
  • CORROSION PROTECTION: The Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry.
  • 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.

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

  • BEST FOR: In-ground pools and spas with a surface area up to 1,200 ft. where natural gas is available. Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required.
  • 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.
  • CORROSION PROTECTION: The Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry.
  • 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.

6. Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater

  • Part Number: 009217
  • Model Number: P-R266A-EN-C
  • LCD digital display provides accurate temperature
  • Monitors operational status as well as service diagnostics
  • High-wind resistance

7. ZMM 240V 15KW Electric Pool Water Heater for Above Ground Inground Pool Hot Tub,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump

  • 1.This thermostat is designed specifically for the hot tub, the thermostat is installed in the pipeline jacuzzi. When adding hot water bath, start the pump, the thermostat automatically heat insulation work, so the water temperature bath maintained at 39 degrees Celsius, give your pool to create a more comfortable environment
  • 2.Voltage: 220V / 240 Power: 15KW 50/60HZ
  • 3.Automatic heating: thermostat will first reach the preset temperature, then stop working until the temperature dropped a few degrees, the thermostat automatically turns on
  • 4.ST series pool heaters are special used for small pool less than 13CBM, massage pool and hot spring to heat and keep warm; Meanwhile, can be a assistant for heat pump in heating.This product adopts latest constant temperature controller- -temperature sensor replaces traditional magnetic flow switch,it improves greatly of trouble free in working time, adaptability of water environment and stability.
  • 5.1 Year Warranty!

8. Raypak 336,000 BTU Digital Electronic Ignition Propane Pool Heater

  • 336,000 BTU propane digital pool and spa heater
  • Microprocessor-controlled thermostat can be set precisely to your liking , set it and forget it
  • Cabinet and the internals are non-corrosive and rust resistant
  • Features PolyTuf powder coating, polymer headers, and an all copper-fin-tube heat exchanger
  • Also features a stainless steel tube sheet, 2 inch CPVC water connections, burner tray and fire tile

9. 220V 240V 18KW Electric Pool Water Heater for Above Ground Inground Pool,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump

  • 1.(New Brand:Coasts)316# stainless steel, Best in its class
  • 2.60000 Btu/Hr heating capacity, 18KW
  • 3.Suitable for pools up to 7500 gallons in coastal climates
  • 4.Suitable for ALL Hot Tubs,Above Ground Inground Pool Swimming Pool.
  • 5.240 Volts 75A - 60 HZ American Voltage.Use With Water Pump.

10. IIS 240V 11KW Electric SPA Pool Heater for Above Ground Inground Pool,Upgrade Portable Pool Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump

  • 1.316# stainless steel, Best in its class
  • 2.37,000 Btu/Hr heating capacity, 11KW
  • 3.Suitable for pools up to 4000 gallons in coastal climates
  • 4.Suitable for ALL Hot Tubs,Above Ground Inground Pool Swimming Pool.
  • 1.316# stainless steel, Best in its class 2.37,000 Btu/Hr heating capacity, 11KW 3.Suitable for pools up to 4000 gallons in coastal climates 4.Suitable for ALL Hot Tubs,Above Ground Inground Pool Swimming Pool. 5.240 Volts 50A - 60 HZ American Voltage.Use With Water Pump.

Last update on 2021-12-06 / Affiliate links / Images from Amazon Product Advertising API

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