Top 6 Pool Heaters for 400k BTU Pools

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

Hey there! Looking to heat up your 400k BTU pool? Well, you've come to the right place. In this post, I'll be sharing with you the top 6 pool heaters that are perfect for pools of this size. So, grab a towel and let's dive right in!

1
Hayward Universal H-Series 400K BTU Gas Pool Heater
✯ Satisfactory choice ✯
BUY NOW Amazon.com
8.4
2
Raypak 406k BTU Gas Pool Heater
Overall, recommended with considerations
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8.2
3
Hayward Propane Pool Heater
Overall Verdict: Reliable and Efficient
BUY NOW Amazon.com
7.5
5
Raypak 406K BTU Gas Pool Heater
7.5
1

Hayward Universal H-Series 400K BTU Gas Pool Heater

$3,949.00
Amazon.com
as of April 18, 2024 11:08 am
8.4
Satisfactory choice
The Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater is a reliable and easy-to-install option for in-ground pools and spas. With its low environmental impact and compliance with low-NOx emissions requirements, it provides premium performance and compatibility with existing connections. However, some users have reported issues with the blower switch and lack of support for warranty issues in certain areas.
Efficient and Powerful
  • Easy installation process
  • Reliable performance
  • Compatibility with existing connections
Problems
  • Faulty blower switch
  • Lack of support in certain areas for warranty issues

The Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater is the perfect choice for in-ground pools and spas up to 1,200 ft. Its durable cupro nickel heat exchanger provides exceptional protection against corrosion, ensuring long-lasting performance. With industry-leading hydraulic performance and fast speed-to-heat capability, you'll spend less time waiting and more time enjoying your pool. Plus, its low NOx emissions make it environmentally friendly. Highly recommended by satisfied customers for its reliability and easy installation.

Heat up your pool!
  • Suitable for in-ground pools and spas
  • Surface area coverage up to 1,200 ft
  • Utilizes natural gas as its energy source
  • Low environmental impact
  • Complies with low-NOx emissions requirements
  • Provides premium performance with 400,000 BTU power
2

Raypak 406k BTU Gas Pool Heater

 in stock
Amazon.com
8
Overall, recommended with considerations
The Raypak 406,000 Btu Digital Natural Gas Pool Heater with Cupro Nickel Ray-014941 is a highly recommended product by pool professionals due to its accurate temperature control, fast heating capability, and one-year warranty. However, some customers have reported initial issues with the heater not functioning properly, and self-installation requires knowledge of pool plumbing and gas and electrical requirements.
Efficient and Powerful
  • Digital thermometer for accurate temperature control
  • Fast heating capability
  • One-year warranty
  • Highly recommended by pool professionals
Weaknesses
  • Requires knowledge of pool plumbing and gas and electrical requirements for self-installation
  • Some customers experienced initial issues with the heater not working properly

The Raypak 406,000 Btu Digital Natural Gas Pool Heater with Cupro Nickel Ray-014941 is a durable and efficient pool heater designed to withstand harsh weather conditions. Its unique “pagoda design” ensures that the heater remains effective even during high wind speeds and downdrafts. The galvanized metal cabinet and 7-stage powder coating process protect the heater from corrosion and the elements. Inside, the heater features polymer resin headers and a cupro-nickel fin tube, which prevent rust stains on your pool's surface and stand up against harsh pool chemicals. With its built-in Microprocessor Controlled Thermostat, you can easily set the perfect temperature for your pool or spa with the push of a button. The heater also has built-in diagnostic controls to alert you of any issues and electronic ignition for gas conservation. Overall, this heater is highly recommended and has received positive reviews for its performance and reliability.

Efficient and Powerful Heating Solution
  • Cupro-nickel gas pool and spa heater
  • Pagoda design for durability in harsh weather conditions
  • Microprocessor controlled thermostat
  • High BTU output for efficient heating
3

Hayward Propane Pool Heater

$59.99  in stock
Amazon.com
as of April 18, 2024 11:08 am
7.8
Overall Verdict: Reliable and Efficient
The Hayward W3H400FDP Universal H-Series 400,000 BTU Propane Pool and Spa Heater is a powerful and efficient option for in-ground pools and spas. While the installation process is easy and the construction is durable, there may be delays due to back-ordering of the vent model, and the fuel consumption is higher than expected during the initial warm-up period.
Benefits of Hayward Propane Pool Heater
Drawbacks of the Hayward Propane Pool Heater
  • Vent model needed for installation may be back-ordered, causing delays
  • Fuel consumption is higher than expected, especially during initial warm-up

The Hayward W3H400FDP Universal H-Series 400,000 BTU Propane Pool and Spa Heater is a reliable and long-lasting option for in-ground pools and spas with a surface area up to 1,200 ft. It features a durable cupro nickel heat exchanger that provides exceptional protection against corrosion and premature failure. With industry-leading hydraulic performance and lightning-fast speed-to-heat capability, this heater ensures quick heating so you can spend more time swimming. Plus, its low NOx emissions make it environmentally friendly and ideal for areas with low-NOx requirements. However, some customers have mentioned issues with the availability of necessary vents and occasional shutdowns without explanation. It is also recommended to purchase a pressure relief valve separately to avoid permanent damage. Overall, this heater offers premium performance and efficient heating for your pool or spa.

Heat up your pool!
  • Propane-powered
  • Suitable for in-ground pools and spas
  • Ideal for pools and spas with a surface area up to 1,200 ft
  • Low-NOx emissions compliant
  • High-performance with 400,000 BTU heating capacity
$59.99
in stock
as of April 18, 2024 11:08 am
Amazon.com
4

Hayward HWS400 Outdoor Draft Hood Replacement

$10.10  in stock
Amazon.com
as of April 18, 2024 11:08 am
7.7
Worth the investment
The Hayward HWS400 High Wind Stack Outdoor Draft Hood is a great replacement option for the Hayward H-Series 400,000-BTU gas heater model H400. Its high wind stack design ensures proper ventilation, although it may come at a higher cost compared to other options and has limited compatibility with other heater models.
Benefits of HWS400 Replacement
  • High wind stack design
  • Compatible with Hayward H-Series 400,000-BTU gas heater model H400
  • Ensures proper ventilation
Potential Drawbacks
  • Limited compatibility with other heater models
  • Higher cost compared to other replacement options

The Hayward HWS400 High Wind Stack Outdoor Draft Hood is the perfect replacement for your Hayward H-Series millivolt 400,000-BTU gas heater model H400. This outdoor draft hood ensures proper ventilation of the heater's exhaust fumes, allowing for safe and efficient operation. With its high wind stack design, you can rest assured that this draft hood will withstand even the strongest winds. It's easy to install and fits perfectly with your Hayward H400 heater. Get the Hayward HWS400 High Wind Stack Outdoor Draft Hood and enjoy worry-free heating all year round.

Upgrade your outdoor ventilation system!
  • High wind stack design
  • Compatible with Hayward H-Series 400,000-BTU gas heater model H400
  • Ensures proper ventilation
  • Replaces outdoor draft hood
5

Raypak 406K BTU Gas Pool Heater

 in stock
Amazon.com
7.3
Efficient and dependable
The Raypak 406,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is an easy and reliable heating solution for your pool. With its digital electronic ignition and use of natural gas, it provides cost-effective heating while ensuring enhanced safety. The unit is also built to withstand various weather conditions and made from durable space-age material. However, some users have experienced malfunctions and delayed service, and returning the item can be difficult due to its size.
Efficient and Powerful Heating
  • Easy and reliable startup with digital electronic ignition
  • Cost-effective heating with natural gas
  • Enhanced safety with intermittent spark ignition pilot
  • Durability and ability to withstand various weather conditions
Potential Limitations
  • Drawbacks:
  • Malfunctioning unit with delayed service
  • Difficulty in returning the item due to its size

The Raypak 406,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is a high-quality and efficient solution for heating your swimming pool or spa. With its electronic ignition and digital thermostat, this heater is designed to quickly and effectively heat your pool or spa with ease. Its durable construction and smart design make it one of the best on the market, exceeding federal and state fuel efficiency standards. It also features condensation protection and a wind-resistant design, ensuring it can withstand the elements for years to come. Although it cannot be shipped to California, this heater is a perfect choice for those seeking efficiency, convenience, and versatility in any weather conditions.

Explore further:  Top 7 120V Garage Heaters for Ultimate Warmth in Your Garage
Stay Warm in Your Pool!
  • Digital electronic ignition for easy and reliable startup
  • Natural gas powered for cost-effective heating
  • Intermittent spark ignition pilot for enhanced safety
  • Built to withstand various weather conditions
  • Versatile and efficient solution for different environments
  • Made from space-age material for durability
6

Jandy JXI400N Gas Heater – 400K BTU

 in stock
Amazon.com
3.3
Overall Impression: Reliable and Efficient
The Jandy JXI400N Compact Swimming Pool Spa Hot Tub Natural Gas Heater is a powerful and efficient heater that quickly heats your pool or spa. Its compact design saves space and adds a modern touch to your pool area. However, it is important to note that it is susceptible to rust and water damage and the warranty does not cover labor costs.
Efficient and Powerful
  • Compact size
  • Faster heating time
  • Improved aesthetics
  • More space on equipment pad
Potential Drawbacks
  • Susceptible to rust and water damage
  • Warranty does not cover labor costs

The Jandy JXI400N Compact Swimming Pool Spa Hot Tub Natural Gas Heater 400K BTU is a compact and efficient heater for your swimming pool or hot tub. Despite its smaller size, it heats up the water 20% faster than other models. Its sleek design adds a modern touch to your equipment pad, and it is easy to install for DIYers. However, some customers have reported issues with the durability of the heater, with instances of leaks and electronic failures. It's important to properly maintain the pH levels of your pool or spa to avoid any potential damage.

Heat up your pool quickly!
  • Efficient Heating: The Jandy JXI400N heater provides a powerful 400,000 BTU of heat, allowing for quick and efficient heating of your swimming pool, spa, or hot tub. This ensures that you can enjoy your pool or spa at a comfortable temperature all year round
  • Compact Design: With its compact size, the Jandy JXI400N takes up minimal space and can be easily installed in smaller outdoor areas or pool equipment rooms. Its sleek design also adds a modern touch to your pool area

Getting the Most out of Your Best 400k BTU Pool Heater

  • Familiarize yourself with the product: Read through the user manual and understand the features and controls of the pool heater. This will help you operate it effectively and avoid any potential issues
  • Prepare your pool: Before using the pool heater, ensure that your pool is clean and properly maintained. Remove any debris or obstructions from the pool and check the water chemistry levels to ensure they are balanced. This will help optimize the performance of the heater and prolong its lifespan
  • Operate the pool heater: Start by turning off the pool pump, as the heater should not be activated unless the water is circulating properly. Next, turn on the gas supply and follow the specific instructions provided by the manufacturer to ignite the heater. Adjust the temperature settings to your desired level, allowing the heater to gradually warm up the pool water
  • Remember, it's important to regularly check and maintain your pool heater to ensure its efficient performance. Always refer to the manufacturer's guidelines and seek professional assistance if needed. Enjoy your warm and cozy pool!

Affordable Pool Heating Solutions for Every Budget

  • High-end models: These pool heaters typically range from $3,000 to $5,000. They are equipped with advanced features such as digital displays, smart controls, and high-quality materials. High-end models often offer superior efficiency, durability, and performance, making them suitable for large pools or commercial use
  • Mid-range models: These pool heaters usually fall within the $2,000 to $3,000 price range. They offer a good balance between performance and affordability. They typically have reliable heating capabilities, user-friendly controls, and decent energy efficiency ratings. Mid-range models are suitable for most residential pools and can provide effective heating for their size
  • Budget-friendly models: In the budget-friendly range, you can find pool heaters priced between $1,000 and $2,000. While they may not have all the advanced features of higher-priced options, these heaters still provide reliable heating for smaller to mid-sized pools. They are often more basic in design and may have simpler control systems, but they offer good value for money for those on a tighter budget
  • Entry-level models: Entry-level pool heaters usually have prices below $1,000. These heaters are typically aimed at smaller above-ground pools or spas. While they may not have the same heating capacity or durability as higher-priced models, they can still effectively warm up smaller bodies of water. Entry-level models are a cost-effective option for those with smaller pools or limited usage requirements
  • Please note that these price ranges are approximate and can vary depending on factors such as brand, features, and market fluctuations. It's always recommended to compare different models and read reviews before making a final purchase decision
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Frequently Asked Questions about the Best 400k BTU Pool Heater

Can a 400k BTU pool heater be used year-round or only during specific seasons?

A 400k BTU pool heater can be used year-round or during specific seasons, depending on your needs and preferences. The heater's capacity is suitable for heating pools of various sizes, so it can effectively maintain the desired temperature regardless of the season. Whether you want to enjoy your pool during the colder months or extend the swimming season, this heater can provide the necessary warmth. However, keep in mind that operating costs may vary depending on the duration and frequency of use.

Are there any additional accessories or equipment required to install a 400k BTU pool heater?

No, there are no additional accessories or equipment required to install a 400k BTU pool heater. The heater itself should come with all the necessary components for installation. However, it's always a good idea to refer to the manufacturer's instructions to ensure you have everything you need for a successful installation.

How noisy are 400k BTU pool heaters during operation?

I'm happy to help you with that! 400k BTU pool heaters can produce some noise during operation, but it generally depends on the specific model and its design. Pool heaters typically generate noise from the combustion process and the exhaust system. Some heaters have noise-reducing features, such as insulated cabinets or mufflers, which can help minimize the noise level. It's always a good idea to check the manufacturer's specifications or read reviews to get a better idea of the noise level for a specific model.

Are there any specific installation requirements for a 400k BTU pool heater?

Yes, there are specific installation requirements for a 400k BTU pool heater. It is important to consult the manufacturer's instructions and guidelines for your specific model, as they may vary slightly. However, some general requirements typically include:

  1. Proper ventilation: The heater should be installed in a well-ventilated area to ensure the safe release of combustion gases.
  2. Clearances: There should be adequate clearances around the heater to allow for proper airflow and maintenance access. The specific clearances will be outlined in the installation manual.
  3. Gas supply: A dedicated gas supply line should be installed to provide the necessary fuel for the heater. The size of the gas line will depend on the heater's demand and should meet local codes and regulations.
  4. Electrical requirements: The heater may require a dedicated electrical circuit to power its components. The voltage and current specifications will be provided in the manufacturer's instructions.
  5. Plumbing connections: Proper plumbing connections need to be made to ensure proper water flow and circulation through the heater. This may involve connecting the heater to the pool's plumbing system.
  6. Safety measures: It is important to install appropriate safety features, such as a pressure relief valve and a gas shutoff valve, as recommended by the manufacturer.
Steve Donaldson Master HVAC technician
Steve DonaldsonMaster HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

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