12 Top Choices For The Best 400,000 BTU Natural Gas Pool Heater

Discover the best 400,000 BTU natural gas pool heater for effortless warmth and relaxation. Dive into comfort with our top picks today.
12 Top Choices For The Best 400,000 BTU Natural Gas Pool Heater

Top Quick Picks For You

Smart Budget Choice

Raypak Pool Heater

Raypak Pool Heater

Raypak 009218 PR336AENC49 provides essential features with a reliable performance, making it an excellent budget-friendly option for pool heating.

Best for Energy Efficiency

Pentair EC-462024

Pentair EC-462024

The Pentair EC-462024 offers a remarkable 82% energy efficiency rating, ensuring minimal energy consumption while delivering effective heating.

Best for Long-lasting Durability

Hayward W3H400FDN

Hayward W3H400FDN

Hayward W3H400FDN is built with a durable cupro nickel heat exchanger that offers exceptional protection against corrosion, ensuring long-lasting performance.

Best for Fast Heating

Hayward W3H135FDN

Hayward W3H135FDN

The Hayward W3H135FDN is known for its industry-leading hydraulic performance, providing fast heating capability, making it perfect for quick pool temperature adjustments.

Best 400 000 Btu Natural Gas Pool Heater

When the sun dips below the horizon and the cool evening air sets in, the allure of a warm, inviting pool beckons. Finding the best 400,000 BTU natural gas pool heater can transform your outdoor oasis into a year-round retreat, ensuring that every dip is a delight, regardless of the season. Dive into our curated guide as we explore the top contenders that marry efficiency and comfort, making your splash into luxury effortless.

Smart Budget Choice: Raypak Pool Heater

Raypak 009218 PR336AENC49 336000 BTU Natural Gas Pool Heater
Highlights
Quick heating capability
Corrosion-free materials
User-friendly controls

The Raypak 009218 PR336AENC49 is our "Smart Budget Choice" for those seeking an efficient pool heater .

We love its quick heating capability—perfect for unexpected pool parties !

With an Integral Fin Copper Exchanger Tube and corrosion-free polymer headers, it's built to last, while the backlit LCD controls make operation a breeze, even in the dark .

The self-diagnostic microprocessor controlled ignition adds a touch of modernity for hassle-free starting .

Although we noted some concerns regarding quality and weight, the performance and budget-friendly pricing make this heater a solid investment for maintaining a warm pool .

Dive right in!

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Price history for Raypak Pool Heater on Amazon

Best for Energy Efficiency: Pentair EC-462024

Pentair EC-462024 -Natural Gas 125K Heater - Limited Warranty
Highlights
High energy efficiency
Simple installation
Fast heating capability

When it comes to warming up your pool, the Pentair EC-462024 is a stellar choice for its energy chops .

With an impressive 82% efficiency rating, we’re impressed by how little energy it consumes while still heating up those waters efficiently .

It's designed for smaller pools, spas, and inground options up to 15,000 gallons, making it incredibly versatile .

Plus, the digital display makes operation a breeze .

However, we’ve noticed some reports of customer support hiccups and a few leaking issues .

Still, for its affordability and fast heating capabilities, this heater stands out in the crowd.

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Price history for Pentair EC-462024 on Amazon

Best for Long-lasting Durability: Hayward W3H400FDN

Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
Highlights
Efficient heating performance
Durable heat exchanger
Energy-saving design

When it comes to reliable pool heating, the Hayward W3H400FDN takes the crown as our choice for "Best for Long-lasting Durability." Its durable cupro nickel heat exchanger is a game-changer, offering exceptional protection against corrosion and ensuring you enjoy your pool for years without worry .

With an industry-leading hydraulic design, it saves energy by reducing pump run times—who doesn’t love those savings ?

Operating this unit is a breeze, thanks to its intuitive control pad and easy front-panel access .

Plus, it boasts low NOx emissions, keeping our environment friendly .

Just be prepared for a heavier unit and possibly a complex gas line installation!

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Price history for Hayward W3H400FDN on Amazon

Best for Fast Heating: Hayward W3H135FDN

Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model
Highlights
Durable heat exchanger
Quick heating time
User-friendly control panel

When it comes to quickly warming up your pool, the Hayward W3H135FDN truly shines as our pick for "Best for Fast Heating." With its durable cupro nickel heat exchanger, this heater offers incredible longevity and performance .

We appreciate its industry-leading hydraulic efficiency, allowing for rapid temperature adjustments to keep your swim cozy .

The intuitive electronic panel makes operation a breeze, perfect for those who prefer simplicity .

That said, be mindful of the high gas bills, and tales of fragile construction suggest you handle it with care .

Overall, if speed is your priority, this heater is hard to beat!

Be sure to also check out the best deep root watering tool for more options! Also, here is the price history so you know exactly when to buy!

Price history for Hayward W3H135FDN on Amazon

Hayward W3H400FDP

Hayward W3H400FDP Universal H-Series 400,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas
Highlights
Fast heating performance
Durable heat exchanger
Energy saving design

When it comes to heating your pool efficiently, the Hayward Universal H-Series 400,000 BTU Propane Heater truly stands out .

We appreciate its stellar heating performance, making those chilly evening swims a breeze .

The durable cupro nickel heat exchanger offers a robust defense against corrosion, ensuring longevity—perfect for those of us who want to enjoy our pools without frequent maintenance .

Its energy-efficient hydraulic design is a game-changer, cutting down on pump run time and saving on energy bills .

Plus, with low NOx emissions, you can feel good about your choice for the environment .

While installation might be a bit tricky and customer support has its ups and downs, the operational ease from the front-panel access is a nice touch .

Overall, this heater delivers warmth and comfort when you need it most!

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Price history for Hayward W3H400FDP on Amazon

Raypak Pool Heater

Raypak 406,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
Highlights
Weather-resistant construction
Efficient and versatile
Easy DIY installation

When it comes to warming up your pool efficiently, the RAYPAK 400,000 BTU Natural Gas Pool Heater tops our list !

With its weather-resistant design, this heater thrives in varying conditions, ensuring reliability .

The intermittent spark ignition not only enhances safety but also contributes to energy efficiency—the pilot only kicks in when needed !

Plus, its space-age material prevents heat retention, allowing for a smarter installation without metal heat sinks .

While regular maintenance is necessary, the ProTek Shield module ensures a longer life for the heater .

With an impressive rating of 4.1 stars from 249 reviews, this is a powerhouse for any backyard oasis.

Be sure to also check out the best underwater solar pool lights for more options! Also, here is the price history so you know exactly when to buy!

Price history for Raypak Pool Heater on Amazon

Ranein Water Heater 400 000 Btu Natural Gas Pool Heater

Propane Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
Highlights
Easy to install
Unlimited hot water
Energy efficient

When it comes to heating your pool efficiently, the RANEIN 400,000 BTU natural gas pool heater has a lot to offer !

We're particularly impressed with its Four Seasons Function, which expertly adjusts to seasonal temperature changes—talk about smart heating !

With unlimited hot water on demand, you can forget about those annoying wait times tied to traditional heaters .

Plus, its energy efficiency doesn’t just save on bills; it also comes with an included exhaust pipe to keep costs down .

However, keep in mind it has limitations at high altitudes and may require some extra parts, but for pool lovers, the benefits definitely outweigh the cons!

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Price history for Ranein Water Heater on Amazon

Raypak P-R266A-EN-C

Raypak Digital 266,000 BTU, Natural Gas, Pool Heater for 2,000'-6,000' Elevation - P-R266A-EN-C #51 009221
Highlights
Accurate temperature control
High-wind resistance
Corrosion-resistant headers

We’re excited to highlight the best 400,000 BTU natural gas pool heater that promises to elevate your outdoor experience !

With an LCD digital display, you'll enjoy precise temperature control, ensuring a comfortable swim every time .

Its high-wind resistance means you won’t have to worry when the breeze picks up, while the corrosion-resistant headers enhance durability .

However, the initial investment can be steep, and installation may require some extra elbow grease .

Don’t forget, regular maintenance is key to keeping it in top shape .

If you’re ready to dive in, this heater might just be your perfect match!

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Price history for Raypak P-R266A-EN-C on Amazon

Raypak Pool Heater

Raypak Digital 399,000 BTU, Natural Gas, Pool Heater for 2,000'-6,000' Elevation - P-R406A-EN-C #51 009223
Highlights
Accurate temperature display
High-wind resistance
Corrosion-resistant materials

If you're on the hunt for an efficient and reliable heating solution for your pool, the RAYPAK 400,000 BTU Natural Gas Pool Heater might just be your perfect match !

With an LCD digital display, you can expect accurate temperature readings every time, ensuring endless comfort .

We love its high-wind resistance and corrosion-resistant headers, which make it a durable choice—even in unpredictable weather .

The Unitherm governor effectively prevents condensation, safeguarding your investment .

Just keep in mind that its hefty weight of 247 pounds could be a challenge during installation .

Overall, this heater combines functionality with sturdiness, making it a solid contender!

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Price history for Raypak Pool Heater on Amazon

Raypak Pool Heater 400 000 Btu Natural Gas Pool Heater

Raypak 014779 PR106AENC 105000 BTU Natural Gas Pool Heater
Highlights
Durable construction
Efficient heating performance
Rust-resistant polymer headers

When it comes to heating your pool efficiently, the Raypak 400,000 BTU Natural Gas Pool Heater stands out for its durable construction and impressive heating performance .

The polymer headers ensure you won't have to deal with pesky rust stains, while the all-copper-fin-tube heat exchanger guarantees a reliable heat output, come rain or shine .

However, we’ve noticed some concerns with inconsistent reliability and a somewhat high price point that might give you pause .

Plus, the installation can be a bit tricky for the average DIYer .

Overall, if you’re looking for strength and efficiency, this model is worth considering!

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Price history for Raypak Pool Heater on Amazon

Pentair MasterTemp 125

Pentair EC462025 MasterTemp 125 125,000 BTU Compact Energy Efficient Swimming Pool and Spa Propane Gas Heater for Small Pools Up to 15,000 Gallons
Highlights
High energy efficiency
Fast heating technology
Easy-to-use display

This 400,000 BTU natural gas pool heater by Pentair brings a blend of power and affordability to your backyard oasis .

With an impressive 82% energy efficiency, it's a standout in its class .

Perfectly suited for smaller pools and spas, this heater delivers ultra-fast heat up thanks to its pre-mixed combustion technology .

The user-friendly digital display makes adjustments a breeze .

However, be mindful of potential inconsistencies in reliability and limited customer support options .

Overall, if you're looking for a reliable way to enjoy your pool year-round, this heater could be a great match for your needs!

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Price history for Pentair MasterTemp 125 on Amazon

ProCom Heater

ProCom Heating Natural Gas Ventless Blue Flame Heater With Base Feet - 30,000 BTU, Manual Control - Model# MN300HBA-B
Highlights
Low operating cost
No electricity needed
Safety shut-off feature

When it comes to keeping your pool warm without breaking the bank, the ProCom 30,000 BTU Natural Gas Pool Heater stands out .

With its ability to efficiently heat up to 1400 sq. ft., this heater offers a cozy swimming experience using natural gas—no electricity required !

Its manual control and three heat settings make it easy to adjust to your comfort level .

Plus, the included Oxygen Depletion Sensor adds an extra layer of peace of mind .

While it does have some limitations, like needing a separate blower, its low operating cost makes it a compelling choice for your backyard oasis.

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Price history for ProCom Heater on Amazon

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