Hayward | W3H250FDP | Universal H-Series 250K BTU Propane Pool Heater – Low NOx, Energy-Efficient

• In_Ground_Pool_Spa_Gas_Heater_Owners_Manual.pdf
• 2025_Hayward_Heat_Chill_Leave_Behind_TRIM_96_669d0196-044a-4506-a27c-84002b5df6b5.pdf
• CuproNickelSellSheet.pdf
• Hayward_Universal_H_Serise_Quick_Reference_Guide.pdf
• Indoor_Vent_Kit_Instructions_2021_442aa971-616d-47e5-a0ab-fc8840e9b6fe.pdf
• Universal_HSeries_Brochure_Bilingual.pdf
• Energy_Guide.pdf
• heating_Universal_H_Series_Low_Nox_front.pdf
• Universal_H_Serise_Low_NOx_Line_Drawing_Front.pdf

The Hayward W3H250FDP Universal H-Series Propane Gas Heater delivers 250,000 BTUs of powerful, energy-efficient heating for in-ground pools and spas. Designed with low NOx emissions to meet air quality standards, it offers environmentally responsible performance without sacrificing heating speed or reliability. Perfect for extending your swimming season, it features a durable cupro-nickel heat exchanger for long-lasting corrosion resistance.

Key Features

• 250,000 BTU heating capacity for in-ground pools and spas

• Low NOx emissions to meet strict air quality requirements

• Energy-efficient design reduces operating costs

• Cupro-nickel heat exchanger for superior corrosion resistance

• Rapid heating capability to quickly bring water to the desired temperature

• Compatible with Hayward automation systems for remote control

• Easy-to-use digital LED control panel for precise temperature management

• Polymer header and bypass valve design for enhanced durability and hydraulic efficiency

• Suitable for use in various climates, including coastal regions

• Designed for quiet operation to maintain a peaceful pool environment

Product Overview

The Hayward W3H250FDP Universal H-Series 250K BTU Propane Pool Heater combines strong heating power with energy efficiency and environmentally conscious performance. Its low NOx design meets stringent air quality standards, while the cupro-nickel heat exchanger provides maximum protection against corrosion, especially in high-flow or saltwater conditions. The advanced polymer header and bypass valve design improve hydraulic efficiency, reducing pump run time and saving on energy costs. With user-friendly digital controls and automation compatibility, this heater delivers quick, reliable, and quiet heating—making it an excellent choice for pool owners who want comfort, efficiency, and long-term durability.