Hayward W3H400FDN previously H400FDN Universal H-Series Low Nox 400,000-BTU Natural Gas Pool Heater
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- Size Chart
Toronto Pool Services
Pool Equipment installation services are provided by our partner, Toronto Pool Services.
All installations are performed by certified technicians and are backed by a one-year labour warranty. By submitting this form you will share your information with our partner and they will provide you with a quote by email. You are under no obligation to purchase the product or the installation service. Product prices on torontopoolsupplies.ca do not include installation costs.
Sizing your Heater
w/ 6 ft. Avg. Depth
|Volume, Gallons||Volume, Liters||Gas Heater BTU|
|12' x 24'||12,960||49,000||100k - 150k BTU|
|14' x 28'||17,640||66,800||150k - 200k BTU|
|16' x 32'||23,040||87,200||200k - 250k BTU|
|18' x 36'||29,160||110,400||250k - 300k BTU|
|20' x 40'||36,000||136,300||300k - 400k BTU|
|15' Round||7,950||30,100||~100k BTU|
|18' Round||9,050||34,250||~100k BTU|
|21' Round||15,580||59,000||100k - 150k BTU|
|24' Round||20,350||77,000||150k - 200k BTU|
Note: all figures are approximate and are meant to be used as a guideline only. Heater performance may vary depending on weather conditions - wind, shade, etc. For sizing solar and electrical heaters, refer to each individual heater's documentation.
Hayward W3H400FDN Natural Gas Pool Heater
When it comes time to choose a new heater for your pool, doing research to find the right heater can help to save time, expense, and frustration with your pool each year. When your pool heater isn't functioning well, you can lose time in the water, and can face expensive and frustrating service calls.
The best pool heater is one that you'll barely notice, providing comfortable and low-profile heating. With the H-Series, Hayward offers a new line in pool heating that builds on their previous models, offering even more than ever before.
Why choose the Hayward H-Series Natural Gas Pool Heater?
The Hayward H-Series heaters are highly rated by customers for the easy to use display. With just a glance, you get up-to-the-minute readings on your water temperature, and the status of your heater. The H-Series also comes complete with built in self-diagnostic capabilities. When your heater has an issue or needs service, you'll be alerted immediately. This intelligent design helps you to avoid common heater issues, saving you from damage and costly repairs.
This heater is a flexible option for many pool owners. Suitable for new installations or to replace existing heaters, the H-Series has also been designed with a standard cupro-nickel heat exchanger. This means that your H-Series heater is even more durable than previous models, and is even tough enough to withstand the harsh conditions of saltwater pools.
Hayward has provided heating to pools of all sizes for many years, and many pool owners will only use a Hayward heater for their pool.
Reliable and Warm Home Heating
Hayward provides efficient and reliable water heating to pool owners across Canada and the United States. A trusted name in pool equipment, Hayward has continued to innovate and push for better operation and more intelligent design for pool equipment - and the proof is in their H-Series model. If you're hoping to extend your swimming season, you can rely on the H-Series natural gas pool heater for many summers of perfect pool water.
- Standard cupro nickel heat exchanger
- Excellent salt water and chemical corrosion resistance
- Exclusive 'Totally Managed' cupro nickel heat exchanger water flow
- Same water velocity through all tubes for faster heating
- Patented header by-pass design
- Up to 18% savings by reducing pump run-time
- 2inx 2 1/2in CPVC union plumbing connections
- Common union for installation or service, adapts to larger plumbing recommended for Ggeater efficiencies
- Low NOx Emissions - Meets clean air quality standards
Manufacturer Warranty: 1 Year
NOTE: Product images are for illustration purposes only and may not exactly match the actual product due to seasonal model, color or design changes. When shopping for parts we strongly recommend to check the SKU or "Part Number" which is listed on each product page. If you are unsure whether this is the correct product or need assistance please contact us.
Just a quick reminder - Toronto Pool Supplies is an online-only store. Our Concord, ON location is a pickup point, not a retail store and we cannot service walk-in customers. If you want to pick up your items in person please place an order online first and we will email you when it's available for pickup.
Hours: Mon-Wed: 9AM-6PM / Thu: 9AM-8PM (Extended) / Fri: 9AM-6PM