The Tank › Installing New Whirlpool Gas Heater – Worth Doing Modifications Before Installation? › Reply To: Installing New Whirlpool Gas Heater – Worth Doing Modifications Before Installation?
This is very much “up to you.” A 12-year should either have two anodes or a thicker primary anode. Your service manual will show what it has on about the last page. We don’t like aluminum for reasons explained on the bottom of my Anodes page at waterheaterrescue.com, but if that doesn’t bother you, there is no reason to switch. On the other hand, it would make sense to install a sediment flush kit because aluminum anodes make a lot of gunk that sits in the tank bottom.
It’s not just newer heaters that have tight anodes. It’s always been a problem, yet people find ways to do it. There are tips with my instructions.