Page 24 COMFORT PACK LIMITED WARRANTY 1. National Comfort Products warrants to its customers that its product shall be free from defects in material and workmanship under normal use and regular service and maintenance as follows: HEAT EXCHANGERS (Gas units only): for ten years from the date of original installation. Page 25: Warranty. You can also use this form to LEARN THE AGE of your unit to determine if it is still in warranty, please click here to download the Serial Number Code/Age of Unit.
Directions: Use the 1st four digits of your serial number to determine: Digit/Position One: Product Line - Select 1st number of your serial number and choose it from drop-down list Digits/Positions Two & Three: Year of manufacture.Select 2nd & 3rd numbers of your serial number (i.e. "32") and choose it from drop-down list.; Digit/Position Four: Month of manufacture.. Warranty Registration. Important: To get the most out of your warranty, a Warranty Registration Form must be completed at time of start-up by the installer. Please note: If this form is not submitted to National Comfort Products, our standard warranty period will begin at date of original sale, whether or not actual use begins on that date.