Originally Posted By: Brad
This post was automatically imported from our archived forum.
Yes they are. The new standard only requires manufacturers to stop producing the old style as of July 1. Plumbing wholesalers may not get through all of their old inventory for some time, but they are still legal for installation unless your local code authority has decided otherwise.
Here are couple quotes from the link on my original post:
"A voluntary standard developed by industry, in cooperation with the (Consumer Product Safety) commission, calls for conventional tank-type gas water heaters manufactured after July 1, 2003, to be equipped with new safety technology."
"The new American National Standard Institute standard (ANSI Z21.10.1a) was approved in two parts: The first requirement, for flammable vapors-ignition-resistance, was approved in February 2000; and the second requirement, for the heater to be resistant to lint, dust and oil accumulation, was approved in November 2002. The final standard, incorporating both parts, became effective on July 1, 2003. All 30, 40, and 50-gallon gas storage type water heaters manufactured after this date are expected to comply with the national safety standard."
A simple illustration of the new technology: