At Dunkirk, we stand by our products. 

That’s why we back up all of our boilers with coverage through our manufacturer warranties. Our warranty coverage gives you peace of mind about every boiler you purchase. 

If you’ve just purchased your Dunkirk Boiler, please remember to register the boiler. Some of our condensing boilers provide added coverage that is not available unless your boiler is registered, so please click here to submit your information. While you’re there, take a look at our extended warranty options that offer continued coverage for parts and labor beyond the manufacturer’s warranty. Dunkirk has teamed up with Trinity Warranty, one of the leading extended warranty providers in the HVAC industry to offer coverage options for 5 to 10 years beyond the date of purchase, giving you peace of mind that extends for years. 

Register Your Warranty

Questions about your warranty? 

Talk to a real person from our dedicated team of customer service representatives. 

Call toll-free at 866-847-6656
Email us at