Name: Universal H-Series Heater 200,000 BTU - Natural Gas, Low NOx (Open Line)
SKU: W3H200FDN
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.

Active Defrost	No
Application	New Construction, Renovation
Boost Mode	No
Brand	Hayward
Channel	Open Line
Circuit Amps	5.5
Compressor Speed	N/A
Cooling Capability	No
Fuel Type	Natural Gas (NA)
GTIN	610377387217
Heating Capacity (BTU/hr)	200,000
Hertz - Heaters	60 Hz
Kilowatts	59 kW
Warranty - Labor	None
Low Ambient Operation	Yes
Master Carton Qty	1
Maximum Breaker Size (Amps)	15
Minimum Operating Temperature	40 °F
Pallet Qty	1
Warranty - Parts	1-year
Phase - Heaters	1
Pool Type	In Ground
Product Dimensions	24 " x 22 " x 29.5 "
Product Height	24 in
Product Length	29.5 in
Product Weight	140 lb
Product Width	22 in
Rear Clearance - Heaters	6"
Refrigerant	No
Series Heaters	Universal H-Series
Shipping Dimensions	30.6 " x 32.8 " x 33.3 "
Shipping Weight	161 lb
Side Clearance - Heaters	12"
Silent Mode	No
Voltage - Heaters	120/240V
Water Flow Rate Max	125
Water Flow Rate Min	20

Questions & Answers

15 answered question(s)

Eric Verified User

06/24/26

Q: I'm looking for remote control options for this heater. I would like to control the settings from the porch or pool, without needing to get in the pump house.

A:

Hi, any of our Omni control systems would give you the functionality you are looking for. We do not sell directly, but you can find a local Hayward Authorized Dealer by clicking on the Dealer Locator tab on our home page of our website, Hayward.com ...

By Hayward Support

Justin Pulman Verified User

06/24/26

Q: Installing a 14 x 28 fiberglass 11,000gal pool which is 3-10” to 5-10” deep. Pool company recommend your h200fd propane heater. Is that appropriate for a high elevation in Northeastern Pennsylvania zip 18436.

A:

Hi, we always defer to the local builder when sizing heaters. They are familiar with the area and the climate and can make the best decision on which heater will work for your application.

By Hayward Support

Ed Verified User

06/24/26

Q: All the heaters especially W3H200FDN all say in ground pool Can this be used for above ground?

A:

Hi, all the Universal H Series gas heaters are designed for use only with inground pools. We build an above ground heater though. The H135 series is specifically designed for abg pools.

By Hayward Support

Joseph Torrioni Verified User

06/24/26

Q: What is an adequate size heater for a 16 x 40 pool from 4 feet to 7 feet? Natural gas.

A:

Hi, that would vary dependning on where you are located geographically, whether the pool is covered, and what temperature you would like to maintain, but in general, a H400FDN or HDF400 should do fine. Contact a local Hayward Authorized Dealer for help...

By Hayward Support

Tom Verified User

06/24/26

Q: Price for fdn 200,000 btu heater

A:

Hi, we do not sell direct. 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

Michael Kopp Verified User

06/24/26

Q: I would like to register this produce I just bought online (warranty) but cannot find it as part of the produce in your warranty section of your web site

A:

Hi, you can register your product on our website Hayward.com by clicking on the support tab, then clicking on Warranty and then scroll to the bottom left where there is a section labeled "Register a Product" If you are still having trouble ...

By Hayward Support

Jonathan wright Verified User

06/24/26

Q: Can this be used on an above ground pool 24’ x 54”and is it simple to setup?

A:

Hi, this heater is not designed for above ground pools. The H135 heaters are designed for this application.

By Hayward Support

Bonnie Buell Verified User

06/24/26

Q: Can you set the unit to automatically come on if it drops below a certain temperature?

A:

Hi, the heater has a thermostat that will automatically bring it on when the water temperature falls below the setpoint.

By Hayward Support

David Dunn Verified User

06/24/26

Q: Where can I find the refractory kit for my older 200,000 btu Hayward pool heater

A:

Hi, a refractory kit is not available for our heaters. 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

Ronald Kelley Verified User

06/24/26

Q: I need to purchase a replace valve for my Hayward heater. Part VR8305M4629

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

DOUG HAYSLIP Verified User

06/24/26

Q: i am getting a code of LO what part do i need i have good water pressure and flow.

A:

Hi, the LO code is a sign that one of the limits on the heater is open. This can be the water pressure switch, the Vent pressure switch, the exhaust gas limit, or either of the high limit switches. To find a local Hayward Authorized servicer for your...

By Hayward Support

Will Simpson Verified User

06/24/26

Q: How to I register my new Heater?

A:

Hi, you can follow this link to register your product. https://hayward.com/support/resources/warranty/product-registration

By Hayward Support

VJ Verified User

06/24/26

Q: If I install the unit myself will I still have a warranty?

A:

Hi, you will have a 1 year parts only warranty if you self install.

By Hayward Support

Daniel Verified User

06/24/26

Q: What are the actual dimensions of the H200FDN? All I can see is the shipping dimensions, and not the dimensions of the actual unit....thanks, Daniel

A:

Hi, the H200FDN is: 22" wide 29.5" deep 24" tall

By Hayward Support

Guest Verified User

06/24/26

Q: I will be upgrading my 150 to a 200, I am currently using a 1 1/2" return piping will the be a coupling for the 1 1/2 " or is just the 2' that is usable

A:

Hi, I am not certain what you are asking. Are you talking about the water lines? If so, You can use the 1 1/2" plumbing you have now as long as there is adequate water flow to the heater. The H200 requires a minimum of 30 gpm to operate correctly...

By Hayward Support

Universal H-Series Heater 200,000 BTU - Natural Gas, Low NOx (Open Line)

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Universal H-Series Heater 200,000 BTU - Natural Gas, Low NOx (Open Line)

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