Best 4000 Btu Pool Heater 2024 - Top 10 Picks

This is the ultimate buyer's guide to finding the right 4000 btu pool heater to suit your needs. We review the 10 best 4000 btu pool heater on the market so you know that your next decision will be a smart one!

When you're trying to select the good 4000 btu pool heater, 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 4000 btu pool heater.

You don't have to try out every 4000 btu pool heater to find one that meets your needs. After extensive research and hours of in-person tests, we've found the best 4000 btu pool heater to be Hayward W3H400FDP Universal H-Series 400,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas. 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 Raypak 406,000 BTU Digital Electronic Ignition Natural Gas Pool Heater.

Choosing the 4000 btu pool heater 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 4000 btu pool heater. The following products are some of the best you can get right now.

List of Top 10 4000 Btu Pool Heater

Review of Best 4000 Btu Pool Heater

1. Hayward W3H400FDP Universal H-Series 400,000 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 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.

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

  • 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: 009219 | Model Number: P-R406A-EN-C
  • PLEASE NOTE: Item is unable to be shipped to state of California

3. Pentair EC-462025 Heaters, White

  • GREAT FOR SMALLER POOLS: Propane 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; Dimensions (L x W x H): 31.5 x 21 x 23 inches; Weight: 80 pounds

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

  • Part Number: 014941
  • Model Number: P-R406A-EN-X
  • Cupro-nickel gas pool and spa heater
  • Pagoda design ensures heater stays active in harsh weather conditions
  • Microprocessor controlled thermostat

5. FibroPool Swimming Pool Heat Pump - FH135 35,000 BTU - for Above and In Ground Pools and Spas - High Efficiency, All Electric Heater - No Natural Gas or Propane Needed

  • CLEAN AND GREEN: The FH135 is powered by clean electricity, reducing the harmful environmental effects and cost of traditional heaters that use natural gas or propane. Our pumps instead move heat from the air into the water, which saves you money and is a breeze to maintain
  • COMPATIBLE WITH: In ground pools up to 7,500 gallons and above ground pools up to 18 foot round or 12 by 24 foot oval. As with all heat pumps, we recommend using in a humid climate down to 50 degrees for best performance. Dry climates are better served by a traditional gas heater
  • HIGH EFFICIENCY: Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy efficient in their class. You can rest comfortably knowing your family will enjoy years of late season swimming without feeling a squeeze on your electric bill
  • RUGGED DESIGN: Enamel-coated steel chassis is designed to withstand outdoor elements season after season. Slim profile measures just 16"x40"x24", offering a wide range of mounting options. Conveniently installs with included 1 1/2 inch compression fittings
  • EASY OPERATION: Digital control panel with an easy-to-read display offers convenient temperature setting and monitoring. Optional extension cable allows you to mount the control panel in a location that works best for you

6. ECOPOOLTECH-Pool Heater for Above Ground Pools and inground Pools, Model EU100, Out Put 36000BTU/hr, for Pools Up to 10000gallons, Power Style 208V~230V/60Hz. (Inverter System.)

  • Extend Your Swim Season & Fun* Nothing beats a warm pool for your kids, pets and the whole family! The EU100 pool heat pump is recommended to operate within the ambient temperature range of above 20°F and below 100°F, under optimal operating conditions can heat the water temperature to 105F, making it an ideal choice for extending the swimming pool season for months
  • Inverter heating system* By using Inverter technology, the compressor speed and working frequency can be automatically adjusted according to changes in water temperature, ensuring that the machine always operates at the best energy efficiency.
  • Save Money* Base on heat pump technology plus Inverter system, the EU100 heat pump absorbs energy from the air molecules and transfers it into the water. So the operation only requires very limited electric input, hence its high efficiency and heat conversion rate can reach a score of COP 5.5. In other words, for every cent of electricity spent, 4.7 times heat is generated!
  • Available for Above & in-Ground Pools* 36000 BTU output, the Pool heat pump EU100 is Ideal for Above Ground Pools with up to 10000 gallons of water, or in-ground pools up to 8000gallons. (Please refer to the temperature map of the United States to chose the appropriate model).
  • Easy operation* The intelligent control IC automatically maintains the swimming pool at your desired temperature. Once it starts running, you don't need to adjust any settings, just enjoy a warm and comfortable swimming pool.

7. villastar Pool Heater for Above Ground Pool, Pool Heater for Inground Pools, Pool Heaters Pumps 16000 BTU/hr Up to 5000 gallons, Fit 15/18/24 Foot Pool, 110V 120V Electric Pool Heat Pump Above Ground

  • ENJOY LONGER USE: There's nothing better than a warm pool for your loved ones, children, pets, and the whole family! Villastar Pool heater YC-005, high efficiency, energy saving, low operating costs, extended months of fun! It's your perfect heat pump solution! Pool heater for inground pools is built providing long-lasting durability. Say goodbye to frequent replacements, and enjoy worry-free operation with our durable and resilient swimming pool heating and cooling pump.
  • SAVE MONEY AND HIGH EFFICIENCY: villastar swimming pool heat pump is equipped with advanced technology that minimizes energy consumption. Pool heater for above ground pool operates with a very low power input and has a heat conversion rate that can reach a COP score of 4.45. This significantly saves electric pool heater costs while keeping the pool warm and comfortable.
  • FAST HEAT TRANSFER: When operating at 80°F air and 80°F water, this swimming pool heat pumps has a heating capacity of up to 16,036 BTU, a rated power input of 3,599 BTU/h, and can heat up to 5,000 gallons of water (suitable for 5 x 10 ft. to 11 x 22 ft. rectangle between). Heating in water temperature range 59°F-104°F, cooling in water temperature range 46°F-82°F. The larger the pool, the longer it will take to heat. You can operate above ground pool pump with air between 23°F~109.4°F.
  • ADJUSTABLE TEMPERATURE CONTROL: This above ground pool heater can not only provide heating but also cooling. Allowing you to easily customize the water temperature to your preference. The water temperature is displayed on the LED screen, and the control settings are simple and convenient. Whether cooling your pool during the hot summer months or heating it during the cooler months, our heat pumps provide efficient, seamless temperature regulation.
  • EASY AND SAFE INSTALLATION: Swimming pool heaters Comes with a 1-1/4" water pipe connection, just connect a few quick connectors and it's plug-and-play, no special plumbing or electrical work required. Pool pump inground Built-in advanced protection system, including automatic leakage protection, low-voltage switch, high and low temperature protection, compressor exhaust protection, etc. If you have any questions or issues, please feel free to contact us, we offer 24-hour online support.

8. Raypak Crosswind Model 30i Heat/Cool Electric Pool Heat Pump 28K BTU 208/230V Inverter Technology, 28,000BTU, WiFi Capable, for Above Ground and In Ground Pools and spas.

  • Heating and Cooling Electric Heat Pump Pool Heater
  • Whisper Quiet Operation
  • LCD Display and Digital Control
  • Inverter Compressor
  • Titanium Heat Exchanger

9. FibroPool Swimming Pool Heat Pump - FH270 70,000 BTU - for Above and In Ground Pools and Spas - High Efficiency, All Electric Heater - No Natural Gas or Propane Needed

  • CLEAN AND GREEN: The FH270 is powered by clean electricity, reducing the harmful environmental effects and cost of traditional heaters that use natural gas or propane. Our pumps instead move heat from the air into the water, which saves you money and is a breeze to maintain
  • COMPATIBLE WITH: In ground pools up to 15,000 gallons and above ground pools up to 27 foot round or 18 by 33 foot oval. As with all heat pumps, we recommend using in a humid climate down to 50 degrees for best performance. Dry climates are better served by a traditional gas heater
  • HIGH EFFICIENCY: Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy efficient in their class. You can rest comfortably knowing your family will enjoy years of late season swimming without feeling a squeeze on your electric bill
  • RUGGED DESIGN: Enamel-coated steel chassis is designed to withstand outdoor elements season after season. Slim profile measures just 13"x38"x27", offering a wide range of mounting options. Conveniently installs with included 1 1/2 inch compression fittings on a 240 volt circuit
  • EASY OPERATION: Digital control panel with an easy-to-read display offers convenient temperature setting and monitoring. Optional extension cable allows you to mount the control panel in a location that works best for you

10. Hayward W3H150FDN Universal H-Series 150,000 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 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 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.

Last update on 2024-04-26 / Affiliate links / Images from Amazon Product Advertising API

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