A selection guide for Hayward pool and spa heaters, providing model recommendations based on surface area or volume and technical gas pipe sizing charts.
This document serves as a selection guide for Hayward H-Series and H100 Induced Draft gas heaters. It provides tables to help users select the correct heater size for swimming pools and spas (hot tubs) above ground, based on surface area in square feet or volume in gallons. The guide includes calculations for temperature rise over specific time periods.