Navien has recently issued a recall for its Navien condensing tankless water heaters and combination boilers, because, according to the CPSC, a kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cause the unit to produce excessive amounts of carbon monoxide, posing a risk of poisoning.
The recalled products can be identified by the UPC codes 884954974101, 884954974194, and 884954966083. They were sold at wholesale distributors to installers nationwide.
What you can do
Stop using the recalled products and contact the company for a free replacement. For further information you can reach the company at 800-244-8202.