Hayward W3H135FDN Universal H-Series natural gas above ground pool and spa heater, 135,000 BTUHayward Universal H-Series Above Ground Pool and Spa Heater, Natural Gas, 135,000 BTU, Low NOx, W3H135FDN$239900 Web Price
Hayward W3H135FDN Universal H-Series natural gas above ground pool and spa heater, 135,000 BTU
Shop all Hayward

Hayward Universal H-Series Above Ground Pool and Spa Heater, Natural Gas, 135,000 BTU, Low NOx, W3H135FDN

Ask a questionMPN W3H135FDN
$239900 Web Price Some manufacturers don’t allow us to publicly display their best prices online. When you request an Unadvertised Deal, you’re asking us to unlock a special offer that isn’t shown on the site.
Get your unadvertised price ›
FREE Delivery
Out of stock

30 day returns · Easy, with prepaid labels provided

Quick overview

  • 135,000 BTU The rating that drives the H-Series speed to heat, so the pool or spa is usable sooner.
  • Cupro nickel heat exchanger Standard, not an upgrade, and the reason the heater tolerates unbalanced water chemistry that corrodes lesser exchangers.
  • Natural gas, Low NOx Runs on natural gas and meets Low NOx emissions.
  • Built for above ground Sized and set up for above ground pools and spas.
  • Electronic control panel Quick to set and read, so owners are not fighting the controls.
  • Hydraulic performance H-Series heaters lead on hydraulics, which means less back pressure on the pump.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Hayward Universal H-Series Above Ground Pool and Spa Heater, Natural Gas, 135,000 BTU, Low NOx, W3H135FDN, SKU HAY-15-1021. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Hayward Universal H-Series Above Ground Pool and Spa Heater, Natural Gas, 135,000 BTU, Low NOx, W3H135FDN
Hayward

Universal H-Series Above Ground Pool and Spa Heater, Natural Gas, 135,000 BTU, Low NOx, W3H135FDN

$239900 Web Price Some manufacturers don’t allow us to publicly display their best prices online. When you request an Unadvertised Deal, you’re asking us to unlock a special offer that isn’t shown on the site.
Get your unadvertised price ›
Solar Sun Rings Swimming Pool Solar Cover, Blue Sunburst, 5-Foot Diameter, 6-Pack, SSR-SB-02
Solar Sun Rings

Swimming Pool Solar Cover, Blue Sunburst, 5-Foot Diameter, 6-Pack, SSR-SB-02

$30899
Swimline Universal Solar Cover Reel Strap Kit, 5100SK
Swimline

Universal Solar Cover Reel Strap Kit, 5100SK

$3499
Rocky's Reel Systems #3A Portable Residential Reel System, End System Only with 3 in. Hubs
Rocky's Reel Systems

#3A Portable Residential Reel System, End System Only with 3 in. Hubs

$38199
Hayward Natural Gas Valve Kit, FD Series, FDXLGSV0003
Hayward

Natural Gas Valve Kit, FD Series, FDXLGSV0003

$37900
Hayward H-Series Bezel & Keypad Assembly, FDXLBKP1930
Hayward

H-Series Bezel & Keypad Assembly, FDXLBKP1930

$12199
Subtotal

Similar products

Other products people compare with this one.

Raypak 156A 150,000 BTU natural gas above ground pool and spa heater, part 014784 Raypak 156A 150K BTU Above Ground Pool and Spa Heater, Digital Controls, Electronic Ignition, Natural Gas, 0-4999 ft Elevation, 014784$249900 Web Price Pentair MasterTemp EC-462024 125,000 BTU natural gas pool heater Pentair MasterTemp Natural Gas 125K BTU Pool Heater, EC-462024$221299 Raypak 014779 106A analog natural gas above ground pool heater Raypak Analog Natural Gas Above Ground Pool Heater 105,000 BTU, P-R106A-AN-C, 014779$199900 Web Price Raypak 009217 P-R266A-EN-C 266K BTU natural gas digital pool heater, front view Raypak 266K BTU Natural Gas Pool Heater, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R266A-EN-C, 009217$317900 Web Price Raypak 009216 Digital 200K BTU natural gas pool heater, model P-R206A-EN-C, front view Raypak Pool Heater, 200K BTU, Natural Gas, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R206A-EN-C, 009216$283800 Raypak P-R206A-EN-X 200K BTU natural gas pool and spa heater Raypak 200K BTU Natural Gas Heater, Digital Ignition, Cupro-Nickel Heat Exchanger, 0-2000 Ft. Elevation, P-R206A-EN-X, 014938$329100 Web Price Raypak AVIA 264K BTU natural gas low NOx pool heater, model P-R264A-EN-C Raypak AVIA 264K BTU Natural Gas Low NOx Pool Heater with WiFi, Copper Tubing, 0-10000 Ft. Elevation, P-R264A-EN-C, 018032$339100 Web Price Raypak 009221 P-R266A-EN-C #51 high altitude 266K BTU natural gas pool heater Raypak High Altitude R266A Digital Natural Gas Heater, 266K BTU, Copper Exchanger, P-R266A-EN-C #51, 2000-6000 Ft Elevation, 009221$317900 Web Price Raypak 156A above ground pool and spa heater, natural gas 150K BTU, high altitude model Raypak 156A Above Ground Pool and Spa Heater, Digital Controls, Electronic Ignition, Natural Gas 150K BTU, High Altitude 5000 to 9999 Ft, 014785$249900 Web Price Coates 32015CE CE Series 15kW 208V three phase electric pool and spa heater Coates CE Series Electric Heater, 3-Phase, 15kW, 208V, 32015CE$214299
Raypak 009220 P-R206A-EN-C #51 high altitude digital natural gas pool heater, 199.5K BTU Raypak High Altitude R206A Digital Natural Gas Heater, 199.5K BTU, P-R206A-EN-C #51, 009220$283800 Web Price Raypak E3T 18Kw 240V electric pool and spa heater with titanium elements Raypak 18Kw 240V E3T Electric Heater ELS-R-0018-1-TIB, 100-10000665$233100 Web Price Coates 34836PHS-3 PHS Series 36 kW 480 V three phase electric pool heater Coates PHS Series Electric Heater 3-Phase 36kW 480V, 34836PHS-3$310299 Hayward W3H150FDN Universal H-Series 150,000 BTU Low NOx natural gas pool heater Hayward Universal H-Series Natural Gas 150,000 BTU Low NOx Pool Heater, W3H150FDN$299900 Web Price Coates 12424CPH CPH Series 24kW 240V single phase electric pool and spa heater Coates CPH Series Electric Heater 1 PH 24kW 240V, 12424CPH$304299 Raypak E3T 27kW digital electric pool heater, part 100-10000666 Raypak E3T Digital Pool Electric Heater 27kW 92,128 BTU, 100-10000666$299900 Web Price Pentair MasterTemp 460806 250,000 BTU Low NOx natural gas pool heater Pentair MasterTemp Low NOx Pool Heater, 250,000 BTU Natural Gas, Electronic Ignition, HD Cupro-Nickel, 460806$357799 Raypak B-R206A-EN-C 200K BTU natural gas ASME commercial pool heater Raypak B-R206A-EN-C 200K BTU Natural Gas ASME Commercial Pool Heater, Digital IID, Bronze Header, Copper Heat Exchanger, 017371$357300 Web Price Coates 32024CPH 24kW 208V electric pool and spa heater Coates Electric Pool and Spa Heater 24kW 208V Three Phase, 32024CPH$297999 Coates Electric Heater 45kW Three Phase 480V Digital Thermostat | 34845PHS Coates Electric Heater 45kW Three Phase 480V Digital Thermostat | 34845PHS$346899

From Hayward

This industry builds more than pools. We build moments. Hayward

Hayward equipment

Hayward Super Pump 1 HP Max Rated 115/230V, W3SP2607X10 Hayward AquaRite Salt System Complete, 40,000 Gallon Pools, W3AQR15 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
Shop Hayward equipment

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
Shop Hayward parts
Pool cleaners: Hayward TracVac and PoolCleaner suction cleaners lined up on a pool deckPool automation: the Hayward app on a phone held up in front of an infinity poolPool water features: two bubblers in a tiled spa, a woman relaxing on a lounger behind
Hayward makes pumps, filters, heaters, salt systems, cleaners, lighting and automation for residential pools.Shop all Hayward

Product details

The Hayward Universal H-Series W3H135FDN is a natural gas pool and spa heater rated at 135,000 BTU, built for above ground pools and spas and meeting Low NOx emissions.

Speed to heat

H-Series heaters combine strong hydraulic performance with the 135,000 BTU rating, and the two together are what shorten the wait before the water is usable. Better hydraulics also mean the heater puts less back pressure on the pump, so the whole system works less hard for the same result.

The cupro nickel exchanger

The heat exchanger is cupro nickel as standard. Pool water that drifts out of balance is what kills gas heaters, attacking the exchanger from the inside until it fails early. Cupro nickel resists that, which is why the same heater keeps performing season after season on real world water rather than ideal water.

Operation and delivery

The electronic control panel is straightforward to set, so owners spend less time at the panel. The heater ships by freight.

Specifications
Brand Hayward
Manufacturer part number W3H135FDN
UPC 0610377407113
Type Gas pool and spa heater
Series Universal H-Series
Fuel Natural gas
Heating capacity 135,000 BTU
Emissions Low NOx
Heat exchanger Cupro nickel
Application Above ground pools and spas
Controls Electronic control panel
Shipping weight 117 lb
Ships Freight

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

More from Hayward

Hayward SP0714T Vari-Flo XL 1.5 in. top mount multiport valve kit, front view Hayward SP0714T Vari-Flo XL 1.5 in. Top Mount Multiport Valve Kit$15899 Hayward CL200EF in-line automatic pool chlorinator, 9 lb tablet feeder Hayward CL200EF In-Line Automatic Pool Chlorinator, 9 lb Chemical Feeder$12899 Hayward GLX-CTL-RITE AquaRite salt system power center, control box only Hayward AquaRite Salt System Power Center (Requires Salt Cell), GLX-CTL-RITE$142099 Hayward SPX0714BA Vari-Flo XL valve key cover handle assembly for SP0714T Hayward Genuine OEM Vari-Flo XL Filter Valve Key Cover Handle Assembly, SPX0714BA$15299 Hayward FDXLHXA1250 heat exchanger assembly for the H250FD Universal H-Series low NOx heater Hayward Heat Exchanger Assembly for H250FD, FDXLHXA1250$128999 Hayward TurboCell T-15 W3T-CELL-15 salt cell, replacement for AquaRite systems Hayward TurboCell T-15 Salt Cell for Inground Pools up to 40,000 Gallons, W3T-CELL-15$109900 Web Price Paralevel Startup Kit, part number 004-760-2921-00 Hayward Paralevel Startup Kit, 004-760-2921-00$5999 Hayward GLX-PCB-PRO main PCB for Goldline ProLogic and AquaPlus controls Hayward Main PCB Replacement for Goldline ProLogic Automation and Chlorination After 10/2008, GLX-PCB-PRO$107599 Hayward SP10841 Auto-Skim skimmer for vinyl and fiberglass pools, white with square lid Hayward Auto-Skim Skimmer for Vinyl/Fiberglass Pools, 1.5" FPT, Square Lid, White, SP10841$19199 Hayward SPX0714L cover o-ring for SP0714T Vari-Flo XL valve Hayward Cover O-Ring for SP0714T Vari-Flo XL Valve, SPX0714L$1799
Paramount 005422901500 two lamp UV kit with boot and o-ring for HydraPure and Ultra UV2 sanitizers Paramount 2-Lamp Kit with Boot and O-Ring for HydraPure and Ultra UV2 Sanitizers, 005422901500$26899 Hayward W3T-CELL-9 TurboCell T-9 salt cell with 15 ft cord Hayward TurboCell T-9 Salt Cell for Inground Pools up to 25,000 Gallons, Genuine AquaRite Replacement, W3T-CELL-9$89900 Web Price Hayward SP0710X62 Vari-Flo 1.5 in. side mount multiport valve for Pro Series sand filters Hayward Vari-Flo 1.5" Side Mount Multiport Valve for Sand Filters, SP0710X62$19399 Hayward SPX1082CA genuine OEM skimmer basket, 7 in. top diameter Hayward Genuine OEM SP1082 Skimmer Basket, SPX1082CA$2499 Hayward SPX1091Z7 1-1/2 in. combo hose adapter, 2 pack Hayward 1-1/2" Combo Hose Adapter for Filters, Pumps, Skimmers and Chlorine Feeders (2 Pack), SPX1091Z7$1099 Hayward SPX0740BA key cover and handle assembly for SP740DE multiport valve Hayward OEM Key Cover and Handle Assembly for SP740DE, SPX0740BA$20399 Hayward CX200XRE 200 sq. ft. replacement filter cartridge for the SwimClear C200S Hayward Genuine OEM SwimClear C200S Filter Cartridge, CX200XRE$20899 Hayward HLXPROUPG Pro Logic Retrofit Kit, OmniPL Hayward Pro Logic Retrofit Kit, OmniPL, HLXPROUPG$199900 Web Price Hayward SP071620T 2 in. top mount backwash valve with clamp for Pro Series S310T and S310T2 Hayward 2" Top Mount Backwash Valve with Clamp, Fits Pro Series Sand Filters S310T / S310T2, SP071620T$26199 Hayward FDXLGSV0003 natural gas valve kit for Universal H-Series FD heaters Hayward Natural Gas Valve Kit, FD Series, FDXLGSV0003$37900

Questions and answers

What people ask about this product, answered by our pool techs.

What fuel does it burn?
Natural gas. It is the natural gas version of the Universal H-Series above ground heater.
How big is it?
135,000 BTU, which Hayward pairs with the H-Series hydraulics for faster speed to heat.
Why does the cupro nickel heat exchanger matter?
Cupro nickel resists the corrosion and premature failure that unbalanced water chemistry causes. Hayward fits it as standard on H-Series rather than selling it as an upgrade.
Is it for above ground pools only?
It is built for above ground pools and spas.
Ask your own question