Hayward recalls Universal-HC Series pool heaters over carbon monoxide poisoning risk
The Hayward HDFS400 dual-fuel gas pool heaters can produce high levels of carbon monoxide while running, which could cause serious injury or death from carbon monoxide poisoning.
What to do
Stop using the pool heater immediately. Contact Hayward Industries to schedule a free in-home inspection and repair by a qualified technician.
Photos from CPSC
Photos supplied by CPSC.
Recall details
- Product
- 400,000 BTU Universal-HC Series Pool Heaters
- Hazard
- During operation, the heaters can produce high levels of carbon monoxide (CO), posing a risk of serious injury or death from carbon monoxide poisoning.
- Injuries
- None reported.
- Units
- About 4,600
- Where sold
- Sold at Pool equipment distributors, builders and service professionals nationwide from March 2026 through July 2026 for about $5,600.
- Remedy
- Repair
- Notice last updated
- September 17, 2026
- Recall date
- September 17, 2026
The headline, summary and steps above are written in plain English from the official notice below. Identifiers are copied exactly as the agency published them. Always check the official notice before you act.
Official notice
The notice's own wording from CPSC.
Hayward Industries Recalls Universal Pool Heaters Due to Risk of Serious Injury or Death from Carbon Monoxide Poisoning Hazard.
- Description
- 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.
- Hazard
- During operation, the heaters can produce high levels of carbon monoxide (CO), posing a risk of serious injury or death from carbon monoxide poisoning.
- Remedy
- 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 options: Repair.
- Injuries
- None reported.
- Number of units
- About 4,600
- Sold at
- Sold at Pool equipment distributors, builders and service professionals nationwide from March 2026 through July 2026 for about $5,600.
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