Water heater: warm, not hot

[PartyOf_Five]

We have an Atwood Suburban sw6d that gets the shower water warm but not hot. I replaced the anode rod in the spring but I didn't help and just look through the tips here before confirming that the outside shower is properly turned off. Any other ideas? Gas flow is working for a properly to the furnace and the fridge. Thanks for your help!

[darsben1]

You posted a few days ago. Then you stated the problem was intermittent. You were
given suggestions to troubleshoot the problem. Did you do them?
Your previous post is at
https://forums.goodsamclub.com/index.cfm/fuseaction/thread/tid/29418961.cfm
in case you lost it

[ScottG]

If it's model that has a mixing valve, it may be on the fritz.
The Anode has nothing to do with heating - it just prevents corrosion to the glass lined metal tank.

[donn0128]

Is it Atwood or Suburban? Two totally different brands.
Anote rod and model number seems to indicate its a Suburban. Check the bypass valves.