Williamson-Thermoflo Gas Boilers Recalled Due to Carbon Monoxide Hazard

Recall at a glance

What was recalled

The recall involves cast iron, gas-fired boilers used for space heating. The following model names and serial numbers are included in the recall: Model Name Serial Numbers GWS-127, GWS-158 From CP 5160092 through CP 5663040 GWI-063, GWI-095, GWI-127, GWI-158 From CP 4363986 through CP 5699844 The model name and serial number are located on separate labels on the outside of the left panel.

Is my product affected?

Compare your product with the details below, including model numbers where listed.

• Williamson-Thermoflo GWS and GWI Gas Boilers · About 1,800 units

Photos from the recall notice

Where it was sold

Companies named in the notice: Plumbing and heating wholesale distributors to plumbers and contractors nationwide from October 2001 through December 2007 for between $1,500 and $2,700.; Weil-McLain, of Michigan City, Ind..

Consumer contact

For more information, contact Williamson-Thermoflo toll-free at (866) 783-9516 between 8 a.m. and 4 p.m. CT Monday through Friday, or visit the firm's Web site at www.williamson-thermoflo.com

Recall history and context

Since 2019 CPSC has recorded 166 recalls in the candles and household goods category, 33 recalls of them in the past 12 months.

Frequently asked questions

Similar recalls in candles and household goods

• Loving Thyself Rocks Recalls Crystal Glass Cups
  October 15, 2026 · Loving Thyself Rocks · Candles and household goods

  This recall affects Crystal Glass Cups containing loose crystal stone chips between two layers of glass. The cups are intended for both decorative use and drinking. Each…

• INMO International Technology Limited Recalls INMO Air3 Smart Glasses
  September 24, 2026 · INMO International Technology · Candles and household goods

  This recall involves smart glasses with model number AIR3 and are used for AI translation, AI-assisted productivity and media streaming. The recalled products are black…

• Hyperfuels Recalls Methanol and Ethanol Fuel Containers
  September 24, 2026 · Hyperfuels · Candles and household goods

  This recall involves Hyperfuels ethanol and methanol fuel containers. The methanol container bears the Hyperfuels logo in red and associated phone number, the label…

• Ricky Joy Recalls More Than 2.3 Million Sour Crush Candy Bottles
  September 10, 2026 · Ricky Joy · Candles and household goods

  This recall involves Ricky Joy-branded Sour Crush Rolling Liquid Candy bottles. The bottles contain 1.85 fluid ounce of sour liquid candy intended to be applied through…

• Clorox Puerto Rico Recalls 6 Million Scented Mistolin and Lestoil Multi-Purpose Cleaners
  September 3, 2026 · Clorox Puerto Rico · Candles and household goods

  This recall only includes Mistolin and Lestoil products sold in Puerto Rico and the U.S. Virgin Islands. The recall involves scented Mistolin Dilutable Cleaners in…

• Deli Jerry Fuel Containers Recalled
  August 13, 2026 · Deli Jerry Fuel Containers · Candles and household goods

  This recall involves Deli-branded fuel containers. They are dark green metal cans and have a cap and a plastic tube. The fuel containers were sold in 5.3-gallon…