Answer
Oct 24, 2025 - 10:57 AM
For detailed instructions on how to properly close and protect your Hayward Low NOx Heater for the winter, please refer to Pages 39 & 40 of the owner’s manual below, which outlines the manufacturer’s recommended winterizing steps.
Owner's Manual - Hayward Low NOx Heaters:
www.thepoolfactory.com/cdn/shop/files...
Following these steps on Pages 39 & 40 will ensure your heater stays protected throughout the winter and is ready to use again in the spring. Here is a link to a Heat Pump Cover that is compatible for use with your Hayward Low NOx Heater.
Pro-Tech Heater Cover for Hayward H-Series 300K-400K BTU:
https://www.thepoolfactory.com/produc...
Owner's Manual - Hayward Low NOx Heaters:
www.thepoolfactory.com/cdn/shop/files...
Following these steps on Pages 39 & 40 will ensure your heater stays protected throughout the winter and is ready to use again in the spring. Here is a link to a Heat Pump Cover that is compatible for use with your Hayward Low NOx Heater.
Pro-Tech Heater Cover for Hayward H-Series 300K-400K BTU:
https://www.thepoolfactory.com/produc...
