We just got a letter from Rennai saying our Hot Water mains system is now obsolete and we should have been servicing it every 2 years. They are offering to service it for $169 incl a $30 filter as a special offer down from $199.
We moved in 2006 and haven't even *looked* at it let alone serviced it, as we didn't know.
The letter is saying our unit was installed in 2000, but not sure how since the house was brand new in 2006 when we bought it from the guy who built it.
What is the expected life of the water heater? We have 5 Bedrooms 3 bathrooms and from what I can see online the 24 is only rated to support 2 bathrooms. Though one of ours is never used.