Hayward Universal H-Series W3H400FDP Universal H-Series Low NOx Pool Heater; Liquid Propane Gas, 400K BTU, Cupro Nickel
Universal H-Series heaters provide reliable, long-lasting comfort.
DURABILITY COMES STANDARD Built with a durable cupro nickel heat exchanger, Universal H-Series heaters offer exceptional protection against corrosion and premature failure caused by unbalanced water chemistry, ensuring you get season after season of premium heating performance.
FAST, EFFICIENT PERFORMANCE Universal H-Series heaters boast industry-leading hydraulic performance coupled with lightning-fast speed-to-heat capability. In fact, the powerful 500,000 BTU model is the fastest in its class, giving you less time to wait and more time in the water.
EASY ON THE ENVIRONMENT Designed with “totally managed” water flow, Universal H-Series heaters save energy (and money) by reducing pump run time. Their low NOx emissions meet air quality standards in all low-NOx areas, so you can rest easy knowing their environmental impact is low.