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Experience the ultimate in pool heating with the Hayward® HDF400 Universal HC Series heater. Its innovative dual-fuel technology, adaptable plumbing, and zero wall-clearance design make it incredibly efficient and easy to install in any existing pad. With Hayward plumbing adapters, it's a simple drop-in process. Don't compromise on reliability - choose the compact yet powerful HDF400 for your pool.

Hayward Item Code: HDF400

Universal HC Series dual-fuel technology gas heaters are uniquely engineered for use with Hayward® plumbing adapters, making them an easy drop-in replacement for other heater brands. The heat exchanger is made from cupro nickel for added reliability, and the easy-out air/gas mixing orifice makes propane conversion fast and simple. The small footprint with zero wall clearance fits in even the most compact equipment pads, while the refined gas controls and remote connectivity provide a simple user experience with added service convenience.

• Top-access design eliminates the need to remove side panels and kneel during service,

• Low NOx emissions meet clean air quality standards and offer premium heating performance,

• Cupro nickel heat exchanger comes standard, protecting against water corrosion and natural wear,

• Zero wall clearance ensures a seamless fit in smaller equipment pads and tight spaces,

• Easy-out mixing orifice allows for easy in-field conversion between natural gas and propane,

• Quick-access reversible top easily swaps plumbing from from right to left while providing access to gas shutoff, voltage selection and more, all via a single fastener,

• Compact, lightweight design makes installation easy in any environment,

• Integral tie-down connections on the base make for easy hand truck transport with no extra tie-down brackets required,

• Patented butterfly bypass valve enables flow rates up to 125 GPM without extra accessories,

• Exclusive plumbing adapters allow for simple drop-in replacement with no pipe cutting required,

    Hayward HDF400 Literature

    Hayward UHC HDF400 Manual

    Hayward HDF4000 Canada 400K BTU Universal HC Series Dual-Fuel Technology Gas Heater, at, the Hayward Experts