The Recall Desk
SevereCPSC·26026·Announced 2025-10-16

Gas boilers recalled after cracked exhaust ducts leaked fumes indoors

About 36,700 VST-brand residential gas boilers are being recalled after 33 reports of cracked exhaust ducts allowing exhaust fumes to leak, posing a carbon monoxide poisoning hazard.

What this means for you

Illness, injury, or structural failure has been reported. Stop using the product immediately and contact the manufacturer for a refund or repair.

Our severity reasoning: Scored 4 because the hazard has already occurred 33 times, with confirmed reports of exhaust fumes leaking into homes rather than a theoretical risk.

Plain-English summary

VST-brand residential wall-mounted gas boilers in Series VT, VR and VR Plus are being recalled, covering model numbers VRS-150, VRS-199, VRP-150, VRP-199, VRS Plus-150, VRS Plus-199, VRP Plus-150, VRP Plus-199, VTS-150, VTS-199, VTP-150 and VTP-199. The model number is bolded near the top of the white label on the side of the boiler.

The exhaust duct can crack, allowing gases to escape inside the home and posing a carbon monoxide poisoning hazard that can result in death or serious injury. The firm has received 33 reports of cracked exhaust ducts allowing exhaust fumes to leak out. No injuries have been reported.

About 36,700 units are affected, with about 3,500 more sold in Canada. The retail and distribution field in the CPSC record for this recall duplicates text belonging to a different product, so no retailer or sale-period details are given here.

Consumers should immediately stop using the water heater and contact VESTA.DS to have a certified technician install the free repair. Anyone who must keep using it while awaiting repair should have working smoke and carbon monoxide alarms in the home.

The recalled product

Product
VST gas-fired tankless water heaters
Manufacturer
VESTA.DS, Inc., of Ontario, California
Hazard
  • carbon-monoxide
  • exhaust-leak
  • cracked-duct
  • poisoning-risk
Affected units
36,700

Distribution

Distributed nationwide across the United States.