Jetglas Water Heater Age Lookup

Jetglas started as a selling point rather than a brand. In 1953 the Day & Night Water Heater Company introduced it as the name for a proprietary vitreous enamel tank lining, at a time when liner quality was the main thing separating one brand from another, and advertised it hard against competitors whose tanks leaked. Production ran in Collierville, Tennessee, and Day & Night was folded into Carrier's BDP division in 1974.

Bradford White acquired the Jetglas trademark in 1977 and took over production, applying its own manufacturing, quality standards, and serial system. In practical terms that means any Jetglas unit built after 1977 is a Bradford White heater and is dated with the Bradford White letter chart: the first letter is the year on a twenty year cycle, the second is the month, so MC51234567 reads March 2015. Units built before the acquisition use Day & Night formats, which are less thoroughly documented and harder to place.

Nothing has been built under the Jetglas name for decades, so any unit still in service is well beyond the point where age alone justifies planning a replacement. Bradford White can still help with parts and technical questions on the post 1977 units, and the serial will tell you which side of that line yours falls on.