Hayward Industries Recalls Universal Pool Heaters Due to Risk of Serious Injury or Death from Carbon Monoxide Poisoning Hazard

This recall involves Hayward-branded HDFS400 Universal-HC Series pool heaters. The 400,000 BTU dual-fuel gas heaters are brown with black atop and measure 21 inches long, 28 inches wide and 31 inches high. The pool heaters have a digital display control panel at the top and a molded base with integrated tie-down connections. The heater's name plate is below the vent with the word "Hayward" appearing at the bottom of the name plate and the model number "HDFS400" appears at the top of the name plate.

Units affected: About 4,600

Where it was sold: Sold At: Pool equipment distributors, builders and service professionals nationwide from March 2026 through July 2026 for about $5,600.

Compare the codes above against the label on your product — usually on the bottom, the back panel, or the packaging. If your unit isn't listed, it is not part of this recall.

During operation the heaters can produce high levels of carbon monoxide (CO), posing a risk of serious injury or death from carbon monoxide poisoning.

Consumers should stop using the pool heater immediately and contact Hayward Industries to schedule a free in-home inspection and repair by a qualified technician. (Remedy: Repair)

Contact: Hayward Industries toll-free at 855-500-5288 from 8 a.m. to 5 p.m. ET Monday through Friday, email at HeaterInquiry@Hayward.com, online at https://www.hayward.com/productrecall or https://www.hayward.com and click on "Recall Information" for more information.

Not sure what you're entitled to? Read our guide: what to do if your product is recalled.