Hello there! Are you tired searching for the best 300 btu pool heater but could not able to find the right one? Worry not readers, because in this article, we have covered everything you need to know before buying the 300 btu pool heater online. Keep Reading!

Choosing the best 300 btu pool heater can be a tough job, especially when you are looking for one that suits your budget. Therefore, we have listed the top 10 300 btu pool heater available at best prices with all the latest demanding features catering to your needs. We have analysed each and every product and have shared detailed information about them. Based on our personal review, we found this VEVOR Electric Pool Heater 11KW 220V Swimming Pool Electric Heater SPA Water Bath Heater Electric Digital fit for Thermostat,Note:You Must Wire This Item Yourself best in our list. However, if you are looking for a product with a cheaper price, then you can check out ZMM 240V 11KW Electric Pool Water Heater For Above Ground Inground Pool Hot Tub.,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump which is equally good with good reviews. We are very much sure that you’ll be able to make a wiser decision in buying the Top 300 btu pool heater by going through the exclusive list mentioned below.

All the products listed in this guide are good in their own way. You simply have to pick one that you feel delivers on the best performance. Let us get right into them already. Check the quick reviews below.

Best 300 btu pool heater

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Product Title
Score

Hayward W3H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater, Natural Gas
9.8

Pentair 460734 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 300,000 BTU
9.4

Hayward W3H400FDP Universal H-Series 400,000 BTU Pool and Spa Heater, Propane
9.1

ZMM 240V 11KW Electric Pool Water Heater For Above Ground Inground Pool Hot Tub.,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump
8.6

Hayward W3HP21104T Pool Heat Pump, 110,000 BTU
8.4

FibroPool FH 220 Swimming Pool Heater Heat Pump
8.2

RecPro RV Air Conditioner 15K Non-Ducted | With Heat Pump for Heating or Cooling Option | RV AC Unit | Camper Air Conditioner (Black)
7.8

VEVOR Electric Pool Heater 11KW 220V Swimming Pool Electric Heater SPA Water Bath Heater Electric Digital fit for Thermostat,Note:You Must Wire This Item Yourself
7.5

IIS 240V 11KW Electric SPA Pool Heater for Above Ground Inground Pool,Upgrade Portable Pool Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump
7.1

RecPro RV Air Conditioner 15K Ducted | Quiet AC with Heat Pump for Heating or Cooling | RV AC Unit | Camper Air Conditioner (Black)
6.5

Hayward W3H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater, Natural Gas


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Hayward W3H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater, Natural Gas

$3,799.00  in stock
6 new from $3,799.00
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • 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.

Pentair 460734 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 300,000 BTU


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Pentair 460734 MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 300,000 BTU

$2,894.08  out of stock
2 new from $2,894.08
1 used from $2,497.00
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • Heats up fast so no long waits before enjoying your pool or spa
  • Best-in-class energy efficiency
  • Manual gas shut-off when service is required
  • MasterTemp is certified for low NOx emission and outperforms industry standards

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


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

$3,799.00  in stock
5 new from $3,799.00
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • 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 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.

ZMM 240V 11KW Electric Pool Water Heater For Above Ground Inground Pool Hot Tub.,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump


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ZMM 240V 11KW Electric Pool Water Heater For Above Ground Inground Pool Hot Tub.,Upgrade Portable SPA Water Bath Heater Thermostat Swimming Pool Thermostat Heater Pump

$480.99  in stock
2 new from $480.99
Free shipping
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • 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 Jacuzzi to create a more comfortable environment
  • 2.Voltage: 220V / 240 Power: 11KW 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 5CBM, 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!

Hayward W3HP21104T Pool Heat Pump, 110,000 BTU


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Hayward W3HP21104T Pool Heat Pump, 110,000 BTU

 out of stock
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • 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.

FibroPool FH 220 Swimming Pool Heater Heat Pump


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FibroPool FH 220 Swimming Pool Heater Heat Pump

 out of stock
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • 4.85 COP. Best in its class
  • 20,000 Btu/Hr heating capacity
  • Suitable for pools up to 7,500 gallons in coastal climates
  • Suitable for ALL Hot Tubs
  • 240 Volts- 60 HZ American Voltage

RecPro RV Air Conditioner 15K Non-Ducted | With Heat Pump for Heating or Cooling Option | RV AC Unit | Camper Air Conditioner (Black)


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RecPro RV Air Conditioner 15K Non-Ducted | With Heat Pump for Heating or Cooling Option | RV AC Unit | Camper Air Conditioner (Black)

$1,249.95  in stock
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • Measuring 26 3/4" wide by 39 5/16" long by 13 11/16" high on the outside of your RV and 21 1/8" wide by 21 15/16" long by 1 11/16" high on the inside ceiling assembly. The air conditioner is non-ducted and comes in black and white.
  • Attractive and durable, it runs off of 115V power. With this model, the sound level is much lower than many of the other air conditioners on the market and the quality of the temperature is better.
  • In addition, the amperage (amps) on the model is lower than other air conditioners. While this might not mean a whole lot, it means that it draws less electricity, saving you power and money to use for other appliances or RV devices.

VEVOR Electric Pool Heater 11KW 220V Swimming Pool Electric Heater SPA Water Bath Heater Electric Digital fit for Thermostat,Note:You Must Wire This Item Yourself


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VEVOR Electric Pool Heater 11KW 220V Swimming Pool Electric Heater SPA Water Bath Heater Electric Digital fit for Thermostat,Note:You Must Wire This Item Yourself

$245.99  in stock
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • Superior Heater: Power: 11KW, Input Voltage: AC 240V 50/60HZ; Current: 50A; Product Size(L × W × H): 18.7 × 3.9 × 14 inch (475 × 100 × 355 mm). This swimming pool thermostat adopts advanced aluminum-plating zinc plates, effectively avoiding the hurt of exposure to the sun. The liner tank uses 304 stainless steel to feature durable and sturdy performance.
  • Adjustable Temperature: It is convenient for you to observe the change of temperature on the LCD at any time, and you can adjust the setting value easily through the touching screen. The electric SPA heater will automatically control the temperature ranged from 71.6 °F-122 °F (22 °C-50 °C). With the smart temperature sensor, the heating system is always under control and keeps non-fluctuation of the temperature.
  • Intelligent Self-test: The intelligent self-checking function not only can detect automatically to reach the set temperature, but also supervises the operational status of the heater in case of water absence. If the heater has the risk of high temperature, the heating system will stop working. This humanized design helps to keep you secure when you use the machine.
  • Ease To Assemble: The pool thermostat is not complicated to install. We provide you a detailed installation manual and 2 of 1.96inch (50mm) interfaces. Please distinguish the inlet pipe and the outlet pipe during your installation. It is recommended that you connect the water heater with a pump of at least 1.5HP (1.1KW) power.The diameter of the water pipe you use should be 1.5in(38mm) for a smooth flowing.
  • Wide Application: This high-quality electric pool water heater is commonly used indoors and outdoors, especially for swimming pools, SPA pools, and bathtubs. The digital heating system maintains a constant and comfortable temperature. For a better heating effect, you are suggested to use this water heater for a maximum of 1981 Gallon (7.5 CBM) pool equipment. Please do not use the heater in saltwater, acidic water, or alkaline water. Note: Cable wire without plug.

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


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

 out of stock
Amazon.com
as of October 22, 2022 7:58 pm

RecPro RV Air Conditioner 15K Ducted | Quiet AC with Heat Pump for Heating or Cooling | RV AC Unit | Camper Air Conditioner (Black)


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RecPro RV Air Conditioner 15K Ducted | Quiet AC with Heat Pump for Heating or Cooling | RV AC Unit | Camper Air Conditioner (Black)

$1,249.95  in stock
Amazon.com
as of October 22, 2022 7:58 pm

Features

  • Remote control with cooling, dehumidifying, dry, sleep, timing, and other functions (stored inside AC unit display for protection during shipping)
  • Temperature control for rooms up to 835 square feet
  • Best installed on a flat roof - less than 5 degrees inclination
  • *Does not work with other brand wall thermostats

So, These are some of the best 300 btu pool heater with all the major features that you must be looking for. Now you can easily pick out the best one based on your budget, needs and preferences. Still, if you found yourself confused about choosing the best product, then you can try this Hayward W3H400FDP Universal H-Series 400,000 BTU Pool and Spa Heater, Propane for more recommendations. Hope you enjoyed reading the article!