Hayward Spa Heaters

Hayward spa heaters contain all of the sophisticated features and capabilities of heaters twice their size. The electronic heaters fit into compact spaces – even under spa skirts or steps. Like all Hayward heaters, they are easy to install and service.

• Determine your spa capacity in gallons (surface area x average depth x 7 ½)

• The reference table lists the time required in minutes to raise the temperature of the spa/hot tub by 30ºF

• This guide can be adjusted for other temperature rises. For example, if you desire a 15ºF increase in temperature, simply divide the time for 30ºF rise by the ratio of 30/15 = 2.

• Spa sizing is based on an insulated and covered spa. Always cover your spa or hot tub when not in use to minimize the heat loss and evaporation.