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Hayward

Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model

  • Based on 27 reviews
Condition: New
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$1,949.00 Why this price?

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Non-returnable. Transportation of this item is subject to hazardous materials regulation

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Availability: Only 4 left in stock, order soon!
Fulfilled by BackyardPoolSuperstore
Arrives Jun 26 – Jul 1
Order within 7 hours and 21 minutes
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Features

  • Durable cupro nickel heat exchanger
  • Industry-leading hydraulic performance with faster speed-to-heat capability
  • Intuitive and easy-to-operate electronic panel
  • Exclusive "Totally Managed" cupro nickel heat exchanger water flow
  • Low NOx emissionsmeets clean air quality standards

Description

Hayward H-Series heater for above ground pools and spas combines reliable technology with ease of operation and superior performance. H-Series heaters boast industry-leading hydraulic performance coupled with a 135,000 BTU rating for faster speed-to-heat capability. Their intuitive electronic panel is also quick and easy to operate, so pool owners can spend less time messing with controls and more time relaxing in the water. Built with a durable cupro nickel heat exchanger as standard, H-Series heaters offer exceptional protection against corrosion and premature failure caused by unbalanced water chemistry, ensuring you get season after season of premium heating performance.

Product Dimensions: 21.5 x 30 x 22.5 inches


Item Weight: 100 pounds


Manufacturer: Hayward


Item model number: W3H135FDN


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 26 – Jul 1

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Very good!
Make sure you get the extended warranty-these heaters are very fragile. Always mixed the right chemicals and test your pool twice a week. Heats up your pool in 2-3 hours maybe less depending on your size. Get ready for that gas bill to sky rocket. 🤷♂️
Reviewed in the United States on August 9, 2024 by jm
    • Simple install
Easy install.
Reviewed in the United States on September 7, 2024 by Keith Moffat
    • Junk and bad seller
Junk Heater stopped working after 10 months….. Visit the BackyardPoolSuperstore. Said call mfg… mfg no resolution. Will have to pursue Amazon for help with this seller
Reviewed in the United States on May 20, 2025 by Roger H.
    • Easy to install
Review Image by Amazon CustomerDiane Schwerdtner Amazon CustomerDiane Schwerdtner
Review Image by Amazon CustomerDiane Schwerdtner Amazon CustomerDiane Schwerdtner
This pool heater works great! It increases the water temperature at about 1 degrees per hour. We have about a 9000 gallon pool. I highly recommend Hayward!!!
Reviewed in the United States on June 27, 2023 by Amazon CustomerDiane Schwerdtner Amazon CustomerDiane Schwerdtner
    • Pool heater works great
Very efficient and cost savings compared to local retailers
Reviewed in the United States on September 23, 2022 by giraffe
    • Junk
JUNK! Had less than a year and the heater core started leaking. Contacted customer service and was provided a new one for free. Installed it myself and worked great for 4 months. Then started leaking again. Tryef to contact customer service again and no response. I checked my water quality several times a week and it was fine. I GUESS A WARRANTY IS AS ONLY GOOD AS THE COMPANY WHO BACKS IT! ... show more
Reviewed in the United States on March 22, 2025 by Len
    • No customer service
No customer service, bought this heater and it worked for 2 days before getting a SF code, book says it the thermistor, can't get any help from hayward! Sent several emails, phone calls. Called Watsons pool who is on the " recommended " list for warranty work, they don't work on it, HEYWARD please answer my emails, just send me a thermistor I will install myself and send the defective one back ... show more
Reviewed in the United States on June 9, 2021 by Gamer
    • Awful
Ran water through it for 2 months. Maybe on 10 times. Got a leak at a weld. At the time the tech came out my ph was low. Had to change my hose and chlorinator, pump didn’t run for a couple of days. Low ph was my fault and the reason why the weld failed.
Reviewed in the United States on July 13, 2022 by Jason Musshafen

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