Consumers should immediately stop using the recalled boilers and contact their installer to have an upgrade kit installed . The upgrade kit will need to be installed by certified installers. The company will pay the installer to complete the upgrade. The upgrade is estimated to take approximately 10 minutes, and does not require the disconnection of the exhaust venting, gas or water lines. For additional information, consumers may contact NTI toll-free at 1-800-688-2575 from 7:00 AM to 7:00 PM EST Monday through Friday, or through the company's website . Consumers may view the release by the US CPSC on the Commission's website . Please note that the Canada Consumer Product Safety Act prohibits recalled products from being redistributed, sold or even given away in Canada. Health Canada would like to remind Canadians to report any health or safety incidents related to the use of this product or any other consumer product or cosmetic by filling out the Consumer Product Incident Report Form . This recall is also posted on the OECD Global Portal on Product Recalls website . You can visit this site for more information on other international consumer product recalls. Date modified: 2018-05-15