
Hayward Universal H-Series Natural Gas 150,000 BTU Low NOx Pool Heater, W3H150FDN
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Quick overview
- Universal H-Series Hayward built this line around energy efficient, high performance operation for the pool service professional.
- 150,000 BTU The smallest output in the H-Series range, sized for spas and smaller pools.
- Natural gas Fired on natural gas, part number W3H150FDN.
- Low NOx A Low NOx heater, which is what many jurisdictions require on new installs.
- Installation adaptable The Universal H-Series was designed to drop into a wide range of pad layouts.
- Freight delivery A full heater ships by freight, so plan for a curbside delivery.
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Universal H-Series Natural Gas 150,000 BTU Low NOx Pool Heater, W3H150FDN
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From Hayward
Hayward equipment
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Hayward TracVac Suction Wall Climbing Pool Cleaner for In-ground Pools up to 40 ft, W3HSCTRACCU
Hayward Pro-Grid 60 Sqft DE Pool Filter, Valve Not Included, W3DE6020
Genuine Hayward parts
Hayward TurboCell T-15 Salt Cell for Inground Pools up to 40,000 Gallons, W3T-CELL-15
Hayward Genuine OEM SP1082 Skimmer Basket, SPX1082CA
Hayward Genuine OEM Vari-Flo XL Filter Valve Key Cover Handle Assembly, SPX0714BA
Hayward H-Series Bezel & Keypad Assembly, FDXLBKP1930



Product details
The Hayward W3H150FDN is the 150,000 BTU natural gas model in the Universal H-Series line of pool and spa heaters, built to Low NOx emissions.
The H-Series idea
Hayward designed the Universal H-Series around energy efficient, high performance operation and adaptable installation, with the pool service professional in mind. The result is a heater meant to fit a wide range of equipment pads rather than one ideal layout.
Sizing
At 150,000 BTU this is the smallest output in the range, which suits spas and smaller pools. Heater sizing depends on the surface area of the body of water, the climate and how quickly you want to reach temperature, so confirm the output against your own pool before ordering.
Installation and delivery
Gas heaters need a correctly sized gas line, proper venting and a licensed installer. The heater ships by freight, so plan for a curbside delivery.
| Brand | Hayward |
|---|---|
| Manufacturer part number | W3H150FDN |
| Series | Universal H-Series |
| UPC | 0610377387194 |
| Type | Gas pool and spa heater |
| Fuel | Natural gas |
| Heat input | 150,000 BTU/hr |
| Heat output | 124,050 BTU/hr at 82.7 percent |
| Thermal efficiency | 82.7 percent, by Hayward |
| Ignition | Hot surface |
| Heat exchanger | Cupro nickel |
| Emissions | Low NOx, meets SCAQMD Rule 1146.2 |
| Electrical | 120 or 240 V, single phase, 60 Hz |
| Amp draw | 5.5 A circuit; 15 A maximum breaker |
| Water connections | 2 in x 2-1/2 in CPVC unions |
| Warranty | 3 years parts, 1 year labor, by Hayward |
| Elevation | To 7,700 ft unmodified, natural gas |
| Dimensions | 24 in high, 19 in wide, 29.5 in long |
| Unit weight | 135 lb |
| Shipping weight | 129 lb |
| Maker status | Hayward lists the H150FDN as discontinued, replaced by the HS150FDN |
| Ships | Freight |
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Questions and answers
What people ask about this product, answered by our pool techs.
What fuel does this heater run on?
How big a pool will 150,000 BTU heat?
What does Low NOx mean?
How does it ship?
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