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Hayward Universal H-Series Natural Gas Pool Heater 350k BTU

In stock
Price in points: 75980 points
I acknowledge that all natural gas and propane heaters are final sale and must be installed by a certified gas technician; self-installation can void manufacturer's warranty.

Quick Overview

Hayward Universal H-Series Low Nox 350,000-BTU Natural Gas Pool Heater. Alternate model number - H350FDN

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Hayward 350K H-Series Natural Gas Pool Heater

On the hottest days of the summer, nothing is more tempting than a dip into the pool. But a pool that hasn't had the chance to warm up can be shocking and off-putting to swimmers. In Canada, our summer season is already incredibly short - and many swimmers lose weeks of fun each summer because the water is still icy cold. Adding a heater to your pool is one of the best ways to encourage more use of the water, allowing your family to enjoy more active outdoor days each year.

With the Hayward H-Series Natural Gas Pool Heater, you can provide a more comfortable swimming experience, and make the summer seem much longer this year.

Why choose the Hayward Natural Gas Pool Heater?

When it comes to heating pool water, Hayward are the professionals. With decades of experience in manufacturing pool heating equipment, Hayward has been an innovator and industry leader in improving water heaters, and this experience shows in their product.

The H-Series heater is an incredibly environmentally-friendly model that provides up to 84% efficiency in heating, saving you money on your utility bills each month. The easy to use display allows you to monitor your heater, and your pool with just a glance.

The H-Series heaters have been designed and manufactured for longevity. The cupro-nickel header makes this heater appropriate for chlorine or saltwater pools, and rust-proofing ensures that your heater won't succumb to corrosion. These design features make the H-series one of the most reliable pool heaters on the market, and a product you can depend on to serve you for many years to come.

Reliable and Efficient Pool Heating

When you add a heater to your pool, you're able to take more control over how you use your pool, and when. With the Hayward H-Series heater, you'll be able to enjoy an easy-to-use heating option that won't put your operating bills through the roof. With your new H-Series heater, you'll be able to enjoy longer and more comfortable summers for many years to come.


  • 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 Greater efficiencies
  • Low NOx Emissions - Meets clean air quality standards

Manufacturer Warranty: 2 Year Parts, 1 Year Labour

Pool Size:
  • 18 x 36'
Dual Voltage
Heater Fuel:
Natural Gas
Heater Pool Type:
Suitable for Saltwater:
Super easy-going company. Best online store so far. Placed an order online, received a notification, came and picked it up when it's ready. 10/10
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