400,000 BTU NATURAL GAS HEATER-UNIVERSAL H SERIES

Command the climate of your backyard oasis with the Hayward Universal H-Series 400,000 BTU Natural Gas Heater (H400FDN), available through Custom LeisureScapes. Serving London, Stratford, St. Thomas, and the surrounding regions, we specialize in high-performance backyard engineering designed for the Southwestern Ontario climate. This 400,000 BTU powerhouse is the premier choice for large-scale inground pools and high-capacity swim spas, offering the fastest heat-up times available to ensure your staycation is never delayed by a cold snap.

Equipped with a standard cupro-nickel heat exchanger, the H400FDN is built to resist the corrosive effects of salt chlorine generators and fluctuating water chemistry, mirroring the durability we demand for our MAAX Spas and American Whirlpool installations. Its eco-friendly Low-NOx design meets the most stringent air quality standards while providing industry-leading thermal efficiency. At Custom LeisureScapes, our “Owner-on-Site” philosophy ensures that this high-capacity unit is integrated for peak hydraulic performance, reducing pump strain and energy costs. With an intuitive digital LED control panel and a “universal” design for flexible installation, the H-Series 400,000 BTU heater provides the reliable, rapid warmth needed to extend your swimming season from the first thaw of spring well into the crisp days of autumn.

Core Services & Offerings

• Maximum 400,000 BTU Output: Engineered for rapid heating of large-volume pools and commercial-grade residential spas.

• Cupro-Nickel Heat Exchanger: Provides superior protection against corrosion and erosion for long-term mechanical reliability.

• Industry-Leading Efficiency: Optimized thermal performance reduces operating costs and environmental impact.

• Universal Installation Flex: Features a flexible design that easily adapts to existing plumbing and gas connections.

• User-Friendly Digital Display: Precision temperature control and system diagnostics at the touch of a button.