Canada-Wide Shipping Look for Free Shipping label on select items!
Pick-up Location 3280 Steeles Ave W, Unit #22
Concord, ON • Click for Map & Hours

Hayward H400FDP Universal H-Series Propane Heater 400k BTU (ASME)

Contact us for availability
Price in points: 184800 points
I acknowledge that installation of this product must be performed by a professional technician and electrical products are not refundable; self-installation can void manufacturer's warranty.

Quick Overview

Hayward Commercial Pool's Universal H-Series ASME gas heaters are designed and certified for commercial use. The flagship of our H-Series line encompasses high-end features and construction materials as standard. They combine industry-leading hydraulics, exceptional performance, energy efficiency and reliability, with planet-friendly low-NOx emissions. Flexible connection options make them ideal for new or existing applications. Choose from 250,000, and 400,000, and 500,00 BTU natural gas or propane models.

  • Get Installation Quote

Hayward 400K BTU Propane ASME Heater

When you add a heater to your inground pool, you can get so much more from the summer season. The ability to open earlier, close later, and enjoy longer days of comfortable swimming ensures that visitors and guests will get weeks of additional use from the pool each year. A large commercial pool requires a special heating solution, and the H-Series 400K BTU Heater provides efficient and powerful heating that is affordable to use.

Why choose the H-Series 400K BTU heater by Hayward?

Commercial pools require effective and powerful heating to keep expenses down while providing a warm and luxurious swimming experience. The H-Series 400K BTU provides an easy installation for commercial pools - with the ability to plumb to the left or the right, and dual-voltage capability that ensures this heater will work with your power supply. This flexibility ensures the H-Series Hayward pool heater is a fit for brand new pools, and makes for easily installation as a replacement heater.

A favorite for pool professionals and residential pool operators, the H-Series is known for efficient operation that helps to keep expenses down each summer season. With easy to control settings, the commercial H-Series heater by Hayward also provides a lock-out feature that prevents inexperienced operators from changing essential settings.

Efficient and easy heating for commercial pools

If you're in the market for a commercial pool heater (or a heater for an extremely large residential pool setup), the H-Series heater by Hayward is unbeatable in flexibility, efficiency, and easy operation. What's more, this commercial pool heater comes complete with a 3 year warranty on parts and labour - ensuring your investment pays off.

When you invest in a commercial pool heater, you'll want to ensure that it is durable, and powerful enough to withstand the demands of your large and heavily-used pool. Quality manufacturing, design, and warranty protection from Hayward ensures that you can enjoy season after season of easy operation, serving your guests or clients with luxurious and unbeatable comfort when they swim.


  • Patented Cupro Nickle Finn Plate heat exchanger with bronze header as standard
  • Independent left or right side electric, water and gas connections
  • 2in x 2 1/2in CPVC flanged connections
  • ASME pressure relief valve included as standard
  • Electronic lock-out feature prevents unauthorized access to configuration settings
  • Easy installation and service via access of single front panel
  • Easy gas valve adjustment
  • Easy dual voltage conversion with fuse-protected circuit boards
  • Texas Heater Kits Available
  • 500,00 BTU provides unprecedented speak to heat, with just 2 models delivering 1 million BTU'S while using minimal pump room space
  • New Warranty - 3 Years Parts and Labor
  • Dimensions: 36.5" x 29.5" x 24"
Plumbing Diameter:
Dual Voltage
Heater Fuel:
Heater Pool Type:

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.