Hayward Recalls HDFS400 Universal‑HC Series Pool Heaters — Stop Using Immediately
Stop using any Hayward HDFS400 Universal‑HC 400,000 BTU pool heater immediately. Check the heater name plate (below the vent) — model HDFS400 at the top and 'Hayward' at the bottom — take a clear photo, then contact Hayward (855‑500‑5288, HeaterInquiry@Hayward.com or https://www.hayward.com/productrecall) to schedule a free in‑home inspection and repair. Do not attempt to repair the unit yourself.
- Products affected
- 1
- Distribution
- Not yet confirmed
- Sold at
- Not yet confirmed
- Status
- ACTIVE
WHAT YOU SHOULD DO
- Stop using any Hayward pool heater that may be part of this recall immediately. Do not operate the unit until it has been inspected and repaired by Hayward.
- Do not attempt to repair or modify the heater yourself; repairs will be performed by a qualified technician arranged by Hayward.
- Check the heater name plate located below the vent. Look for the model number HDFS400 at the top of the name plate and the word 'Hayward' at the bottom.
- Take a clear photo of the name plate (model and any text shown) to speed verification and scheduling when you contact Hayward.
- Contact Hayward to schedule the free inspection and repair: call toll‑free 855‑500‑5288 (8 a.m. to 5 p.m. ET, Monday–Friday), email HeaterInquiry@Hayward.com, or visit https://www.hayward.com/productrecall or https://www.hayward.com and click 'Recall Information'.
- If anyone near the heater feels dizzy, nauseous, confused, has headaches, or other symptoms of carbon monoxide poisoning, get fresh air, seek emergency medical care right away, and call your local emergency number.
- Ensure carbon monoxide detectors in nearby buildings are working and have fresh batteries.
- If you smell gas or suspect a gas leak, evacuate the area and call your gas utility or emergency services immediately.
| Product | UPC | Lot | Size | Status |
|---|---|---|---|---|
| Infrared Saunas, Hybrid Infrared Saunas and Infrared Kits | — | — | RECALLED |
What happened?
Hayward Industries is recalling certain Universal‑HC Series pool heaters, model HDFS400, because they can produce dangerous levels of carbon monoxide, posing a risk of serious injury or death. About 4,600 units are included in the recall.
Who is affected?
Owners and operators of Hayward HDFS400 Universal‑HC Series 400,000 BTU dual‑fuel gas pool heaters. If you bought a Hayward pool heater from pool equipment distributors, builders, or service professionals between March 2026 and July 2026, verify whether it is a recalled HDFS400.
Official response
Hayward will provide a free in‑home inspection and repair for recalled units. The inspection and repair will be performed by a qualified technician arranged by Hayward. Hayward will manage scheduling; owners should expect there may be wait time given the number of affected units.
UPDATE HISTORY
FAQ
Is my Hayward pool heater included in the recall?
Check the heater name plate below the vent. The recalled model is HDFS400 (model number appears at the top of the name plate and 'Hayward' appears at the bottom). If your unit is HDFS400, it may be included in the recall.
How do I find and read the heater name plate?
The name plate is located below the vent. The model number appears at the top of the name plate and the word 'Hayward' appears at the bottom. Take a clear photo of the name plate to help verification.
What does model HDFS400 look like?
The recalled unit is a 400,000 BTU dual‑fuel gas Universal‑HC Series heater, brown with a black top, with a digital display control panel at the top, and measures approximately 21 inches long x 28 inches wide x 31 inches high.
I bought a Hayward heater between March–July 2026 — how do I check if it’s recalled?
Check the heater name plate for model HDFS400 as described above. If the name plate shows HDFS400, contact Hayward for verification and to schedule the free inspection and repair.
What are the dangers of continuing to use a recalled heater?
The recalled heaters can produce dangerous levels of carbon monoxide, which can cause serious injury or death.
What should I do right now if I suspect my heater is affected?
Stop using the heater immediately, move to fresh air if you have symptoms of carbon monoxide exposure, contact Hayward to schedule the free inspection and repair, and do not attempt to repair the heater yourself.
Can I repair the heater myself?
Do not attempt to repair or modify the heater yourself. The remedy will be performed by a qualified technician arranged by Hayward.
How will Hayward schedule inspections and repairs?
Hayward will manage scheduling and will respond to owner requests. Expect possible scheduling delays due to the number of affected units.
How long will it take to get my heater repaired?
Repairs and inspections are provided at no cost to owners. Exact repair wait times and completion timelines are Not yet confirmed; owners should contact Hayward to schedule and ask about expected timing.
Will Hayward offer refunds or replacements instead of repair?
Not yet confirmed.
Who will perform the inspection/repair and will they come to my home?
Hayward will provide a free in‑home inspection and repair performed by a qualified technician arranged by Hayward.
What documentation or photos should I have when I call Hayward?
Have the heater name plate information ready. A clear photo of the name plate (showing the model and any text) will likely speed verification and scheduling.
What symptoms of carbon monoxide poisoning should I watch for and what do I do if someone is sick?
Watch for dizziness, nausea, confusion, headaches, or other symptoms of carbon monoxide poisoning. If anyone is experiencing symptoms, get fresh air, seek emergency medical care right away, and call your local emergency number.
Where were the recalled heaters sold and who sold them?
Not yet confirmed. If you bought a Hayward pool heater from pool equipment distributors, builders, or service professionals between March 2026 and July 2026, verify whether it is a recalled HDFS400.
How many units are included in the recall?
About 4,600 units are included in the recall.
Is it safe to use the heater after the repair?
Not yet confirmed. Contact Hayward for details about the repair and about safety following the repair.
Will my warranty or service records be affected?
Not yet confirmed.
Who do I contact if Hayward doesn’t respond or I have further concerns?
Not yet confirmed.
Are there interim safety measures I should take while waiting for repair?
Yes. Keep the heater turned off and do not use it. Ensure carbon monoxide detectors nearby are working with fresh batteries. If you smell gas or suspect a leak, evacuate and call your gas utility or emergency services immediately.
How will Hayward notify affected owners?
Hayward will contact affected owners and will also respond to owner requests for inspection and repair. Specific notification methods and timing are Not yet confirmed.