A water heater company is recalling some tankless versions because the exhaust duct can crack and allow dangerous carbon monoxide to escape into the home.

Vesta.DS has recalled 36,700 VST gas-fired tankless water heaters, according to an announcement with the U.S. Consumer Product Safety Commission.

Recalled is the VST brand residential wall-mounted gas boilers, series VT, VR and VR Plus with the following 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 in bold on the label on the side of the metal, rectangular boilers.

The boilers were sold at plumbing supply stores nationwide from May 2017 through July 2025 for between $480 and $1,340.

The company said it has rec

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