- #Ashrae age of water heater how to#
- #Ashrae age of water heater serial number#
- #Ashrae age of water heater windows#
What is the purpose of a thermostatic mixing valve above a water heater?.Can the temperature and pressure relief (TPR) valve discharge pipe for a mobile/manufactured home water heater terminate under the home?.When was a gas water heater first required to be elevated 18 inches above a garage floor?.
#Ashrae age of water heater windows#
What is the minimum clearance to doors and windows for an outdoor tankless gas water heater?.Is it alright to have a shut-off valve on both the hot and cold water pipes at a water heater?.Can you wire a 240-volt water heater with 120 volts?.How can I tell if a water heater is HUD-approved for mobile/manufactured homes?.Can you use a light switch for a water heater disconnect?.Is the minimum size water heater inlet pipe 1/2" or 3/4" according to the building code?.Where are gas water heaters not allowed to be installed?.Can a Temperature and Pressure Relief (TPR or T&P) valve be mounted to discharge horizontally?.Are water heaters required to be raised off the floor?.Here’s links to a collection of more blog posts about WATER HEATERS: A medallion like the one shown below on a deep blue tank means you are looking at a water heater that is 40+ years old.Īlso, see our blog post What can I do to make my water heater last longer? Rheem Manufacturing, for example, paints their tanks blue and white but the shade of blue has changed over the years and their logo design has morphed to suit the times. If the yellow Energy Rating sticker is still in place, there is often a date at the bottom of it, like in the example below.Īn experienced home inspector, one that has been looking at water heaters for years, can determine the approximate age based on the color of the tank and the logo design of the manufacturer. But, if you didn’t have a complete data plate to view, the ANSI certification (here abbreviated to ANS) would tell you that it was manufactured sometime between 19. The water heater in the photo above was manufactured in 1999.
These standards get updated every 4 to 6 years, so the certification provides you with a 6-year range in which it was built: 1980 to 1986. But, if it was missing, the ASHRAE date would tell you that it could not have been manufactured before 1980.
#Ashrae age of water heater serial number#
Because the serial number was still intact, we know that it was manufactured in 1985. The water heater label in the photo at the top of the page complies with an ASHRAE standard for 1980. Those acronyms stand for the “American Society of Heating, Refrigeration and Air Conditioning Engineers” and “American National Standards Institute,” and both set industry standards which are updated every few years.
#Ashrae age of water heater how to#
When the serial number is not legible, completely missing, or you can’t figure out how to tease the year of manufacture out of the number-letter sequence, you have one more option that can help you determine approximately how old it is: the year of the ASHRAE or ANSI standard that the water heater complies with.
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