Hayward Universal H-Series Pool Heater – Natural Gas

The Hayward Universal H-Series pool heater – natural gas delivers reliable, efficient, and long-lasting heating performance. Offered in 150,000, 250,000, and 400,000 BTU, it allows you to select the ideal power level based on pool size and water volume. Featuring a cupronickel heat exchanger, it provides superior resistance to saltwater, chlorine, and chemical corrosion, ensuring durability in demanding environments.

Its optimized water circulation technology promotes faster temperature rise and can reduce pump operating time by up to 18%, lowering overall energy consumption. Installation is simplified with a universal union fitting compatible with larger plumbing, while low nitrogen oxide emissions meet environmental air quality standards. A dependable and high-performance heating solution designed to extend the swimming season with comfort and efficiency.

• Hayward H-Series pool heater – natural gas

• Power options based on pool volume: 150k / 250k / 400k BTU

• Salt-resistant cupronickel heat exchanger

• Stable performance even in cooler weather

• Reduced heating time and lower energy costs

• Simplified installation with universal union connection

• Low-NOx environmental standards

• Durable solution for residential pools

Which power level should you choose?

• 150,000 BTU: pools up to ~15,000 gallons, occasional use, temperature maintenance.

• 250,000 BTU: pools 15,000–25,000 gallons, regular family use, best overall balance.

• 400,000 BTU: over 25,000 gallons, large pools or very fast heating in cooler weather.