Universal H Series Low NOx Propane Gas Water Heater

Product Codes: W3H150FDP (150,000 BTU), W3H200FDP (200,000 BTU), W3H250FDP (250,000 BTU), W3H400FDP (400,000 BTU)

Product Name: Hayward Universal H‑Series Low NOx Propane Swimming Pool Heater

Maximum Altitude: Up to 10,000 ft (3,048 m)

BTU Options: 150k — 200k — 250k — 400k

Heater Type: Propane

Connection: 2 in. Male Threaded

Venting: Compatible with vertical or horizontal venting

Voltage: 120/240 V

Heater Dimensions: 150k/200k/250k — 33 × 33 × 30 in; 400k — 33 × 39 × 30 in

Warranty: 1 Year Parts

The Hayward Universal H‑Series Low NOx propane heater delivers high‑performance heating using environmentally friendly low‑NOx combustion. With industry‑leading thermal efficiency of 83–84%, it complies with strict California and Texas emission standards. Its forced‑draft system ensures consistent heating regardless of wind, while the cupro‑nickel Finn Plate heat exchanger offers superior durability and corrosion resistance, ideal for harsh environments and saltwater pools. Stainless steel burners, an insulated FireTile combustion chamber, and high‑performance hydraulic design help reduce circulation pump time and fuel consumption.

Features:

• Low‑NOx certified for reduced emissions
• 83–84% high thermal efficiency
• Cupro‑nickel heat exchanger for superior corrosion protection
• Stainless steel burners
• FireTile combustion chamber retains heat efficiently
• Digital LED control panel for easy monitoring
• Reliable electronic ignition
• Forced‑draft combustion eliminates wind‑related performance issues
• Universal‑fit design compatible with most existing equipment pads
• Fast heat‑up — can raise an 800‑gallon pool by 30°F in under one hour

WARNING: Not compatible with soft‑sided pools (Intex, Coleman, Bestway). Installing on a soft‑sided pool automatically voids all warranty.

Warranty Coverage: Manufacturer’s limited warranty covers replacement parts for one (1) year when installed on a pool or spa by a licensed technician. Warranty is void if damaged by improper water chemistry, improper installation, or use on incompatible pool systems. Labour, chemical loss, water loss, and incidental damages are not covered.

https://www.youtube.com/embed/vXTZ7vUGEws