Name: Universal H-Series Heater 150,000 BTU - Natural Gas, Low NOx
SKU: H150FDN
Availability: InStock

Features

Hayward Universal H-Series gas heaters are the “universal” energy efficient remedy for any new or existing pool or spa. An industry-leading hydraulic design reduces circulation pump run time to provide energy savings of up to 18% when compared to less efficient competitors. The energy efficiency of the Universal H-Series gas heater combines with environmentally friendly low NOx emissions, a standard cupro nickel heat exchanger, and ultimate installation flexibility to responsibly heat a pool or spa today and for years to come.

Features and Benefits

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
Reduction in pump run-time results in significant cost savings
2" x 2 1/2" CPVC union plumbing connections
Forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating the need for a high-wind stack
Low NOx emissions - meets clean air quality standards

NOTE: Hayward Universal H-Series heaters meet or exceed the South Coast Air Quality Management District (SCAQMD Rule 1146.2) Low NOx emissions standards in all Low NOx areas that apply the SCAQMD standard.

EXPERT LINE products can only be purchased through your local pool professional or in-store. Exclusions, other terms, and conditions may apply.
3+ Year Parts and Labor Warranties*

*When sold by a Hayward Rewards® partner. Exclusions, other terms and conditions may apply.

Active Defrost	No
Application	New Construction, Renovation, Aftermarket
Boost Mode	No
Brand	Hayward
Channel	Expert Line
Circuit Amps	5.5
Compressor Speed	N/A
Cooling Capability	No
Fuel Type	Natural Gas (NA)
GTIN	610377047043
Heating Capacity (BTU/hr)	150,000
Hertz - Heaters	60 Hz
Kilowatts	44 kW
Warranty - Labor	1-year
Low Ambient Operation	Yes
Master Carton Qty	1
Maximum Breaker Size (Amps)	15
Minimum Operating Temperature	40 °F
Pallet Qty	1
Warranty - Parts	3-year
Phase - Heaters	1
Pool Type	In Ground
Product Dimensions	24 " x 19 " x 29.5 "
Product Height	24 in
Product Length	29.5 in
Product Weight	135 lb
Product Width	19 in
Rear Clearance - Heaters	6"
Refrigerant	Yes
Series Heaters	Universal H-Series Low NOx
Shipping Dimensions	30.6 " x 32.8 " x 33.3 "
Shipping Weight	129 lb
Side Clearance - Heaters	12"
Silent Mode	No
Sub Brand	N/A
Voltage - Heaters	120/240V
Water Flow Rate Max	125
Water Flow Rate Min	20

Questions & Answers

15 answered question(s)

Joe Verified User

06/24/26

Q: This is what I have . It’s leaking , can it be fixed or do I need a new one. Pool is 22000 gallons 16 x 32

A:

Hi, for help with this contact a local Hayward Authorized Service Center. You can find a list of them by clicking on the Dealer Locator tab on the home page of our website Hayward.com

By Hayward Support

Peter Turchi Verified User

06/24/26

Q: I have had a Hayward pool heater for a few years . This year in starting up it made a loud rattling sound, so I turned it off. What could this be? I turned off the power and took the front cover off. I could see the combustion blower. Nothing appeared to be a problem. Is there another place that would have such a rattle? Please advise. Thanks.

A:

Hi, due to safety concerns we do not troubleshoot gas heaters with consumers. You can find a Hayward Authorized Service Center (HASC) in your area on our website Hayward.com by clicking on the Support Tab, then click Warranty, then in "purpose of...

By Hayward Support

Neal Verified User

06/24/26

Q: I just had mine installed, the company that installed didn’t explain much to us, we have the heater turned off because we are not currently running our pump at a high enough rpm, and we keep getting a “LO” error, does this have an auto start, any help would be appreciated

A:

Hi, the error code will clear and the heater will come on automatically when there is sufficient flow to it.

By Hayward Support

Richard Verified User

06/24/26

Q: How old is my heater model H200fdn sn 2113189103650001

A:

Hi, it appears to have been built in Sept of 2018, but you are missing a digit out of the serial number. I believe it is a 0 in between the 8 and 9. If so it was built in Sept. 2018.

By Hayward Support

Marcia Bland Verified User

06/24/26

Q: Actually can this one be used on an above ground pool?

A:

As long as the correct water flow is delivered to the heater it can be. You may also have to use a flow switch in place of the pressure switch that comes in the heater due to the water in the pool being above the heater. For help with this contact a ...

By Hayward Support

Erica Clough Verified User

06/24/26

Q: Is the H150FDN for an Above Ground Pool? Other places say in-ground and others say both above and in-ground.

A:

Hi, the H150FDN is designed for use on inground pools and spas. We have an aboveground gas heater though! The H135ID1 is designed for use on aboveground pools.

By Hayward Support

Les Halasz Verified User

06/24/26

Q: Howdy, is there a remote control panel option for this unit? Perhaps wired but with a 6-7 ft distance?

A:

The UHS heater can be paired with any of our Omni control systems and that will give you remote capabilities.

By Hayward Support

Ed French Verified User

06/24/26

Q: Does the H150FDN have a Hayward cover to cover for the winter?

A:

Hi, we do not sell covers for our heaters.

By Hayward Support

Richard Wilkins Verified User

06/24/26

Q: Hi, I’ve had this for several years. I’m installing it now. Do you have directions or instructions on gas hook up? Do you have a picture? I could look at I’m old and a little handicapped and I’d rather ask you than trying to stand on my head to find this stuff if you have a diagram, I would much appreciate it, thank you

A:

Hi, unless you are familiar with replacing this product we recommend you allow a professional to do the installation. You can find a list of them by clicking on the Dealer Locator tab on the home page of our website Hayward.com

By Hayward Support

Charlie Verified User

06/24/26

Q: AO code showing. Water temp 73 but set for 81.

A:

Hi, due to safety concerns we do not troubleshoot gas heaters with consumers. You can find a Hayward Authorized Service Center (HASC) in your area on our website Hayward.com by clicking on the Support Tab, then click Warranty, then in "purpose of...

By Hayward Support

J S Vaughan Verified User

06/24/26

Q: Does the heater have to be turned off before the water pump which is on a timer.?

A:

Hi, the heater will automatically turn off when the pool pump turns off if the heater has been properly installed.

By Hayward Support

Terry Verified User

06/24/26

Q: What is the price

A:

Hi, we do not sell direct, but you can find a list of local Hayward Authorized Dealers by clicking on the Dealer Locator tab on the home page of our website Hayward.com

By Hayward Support

Mark H Verified User

06/24/26

Q: can i use a pool heater air blower from a H150fdn/p on my H100id heater? i will need to do slight modifications, but it seems they no longer make my blower. Thank you

A:

You cannot use parts from a H150FDP on a H100ID

By Hayward Support

Bill Nilles Verified User

06/24/26

Q: Is this the same model as a swim pro Hayward heater that I have seen the store great escape sell ?

A:

Yes it is.

By Hayward Support

Lee Smith Verified User

06/24/26

Q: What's the part number for the flow switch

A:

Hi, the part number you need will depend on the age of your heater. If it was built prior to Jan. 2020 you will need FDXLWPS1930, If it was built after that it will require FDXLWPS1931

By Hayward Support

Universal H-Series Heater 150,000 BTU - Natural Gas, Low NOx

Features

Manuals

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Universal H-Series Heater 150,000 BTU - Natural Gas, Low NOx

Features

Manuals

Literature

Line Drawings

Questions & Answers

Related Parts

Americas

United States

Canada

Latin America

Europe

United Kingdom

France

Germany

Spain / Portugal

Italy

Oceania

Australia

New Zealand

Other Regions

Asia

Africa

Middle East