- Description Hayward is always looking to make pool and spa ownership as simple and effortless as possible, and with the new Universal H-Series Low nitrous oxide (NOx) heater they have combined industry-leading hydraulic performance, environmentally responsible low NOx emissions, and a standard cupro nickel heat exchanger with a low profile appearance and light-weight design for the ultimate in pool heating solutions. It also comes with a reversible water connection plus 50-65mm CPVC union connections to provide unrivalled installation flexibility for new or existing equipment pads. It also includes a forced draft system that constantly moves air through the combustion chamber at a precise flow rate. As a result, all outside weather variables that can affect the heating performance, such as wind conditions, are eliminated. If you’re looking for the ultimate in pool gas heaters then look no further – the Hayward Universal H-Series Gas Heater is the one for you! Premium Quality Without the Premium Price The Hayward Universal H-Series Gas Heater comes with a cupro nickel heat exchanger, a feature not included in most other brands of heaters. This gives you extra durability and increased performance without the hit to your pocket. Superior Hydraulic Performance The Hayward H-Series has a polymer header for superior hydraulic performance, saving energy and protecting your pool against the damaging effects of erosion from high flow conditions. It’s designed for today’s larger diameter plumbing systems with 50-63mm CPVC unions. Easy on the Environment Designed with “totally managed” water flow, the Hayward 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. Forced Draft System The Hayward H-Series’ forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating all outside weather variables that can affect the heating performance – such as high wind conditions (without a high wind stack). State-of-the-Art Plate Heat-Exchanger with Cupro Nickel The H-Series have a patented single header “V” baffle design heat exchanger that allows for long life, fast heating, and virtually no condensation.