Hopefully someone can shed some light on this issue because it's driving me nuts.
So I used to have a low-flow showerhead and noticed that the hot water in my condo never lasted all that long. It wasn't awful, but probably in the 20 minutes range. I have a 40gal electric water heater and I'm currently the only person living in this condo, so the hot water use when I take showers is 100% from that and not any other appliances or people taking showers.
I recently bought a new showerhead (Flipside by Kohler) and removed the plastic restrictor because the flow was pretty weak and I was hoping to get a bit better performance out of it.
I definitely do get much better water pressure out of it now, but as a result, I can only seem to get about 12 minutes out of it before the water is too cold to be comfortable and I have to get out.
So far I've checked to make sure the thermostats in the water heater are operating correctly and they seem to be. I checked the incoming voltage (208v. Not sure why it's not 240 but the water heater is rated for both) , Both thermostats are currently maxed out at their highest temp settings (is there any strange possibility that I could get more hot water out of turning them down? I turned them up months ago while I was using my low-flow shower head because I was hoping to get longer showers out of it). The heating elements both show continuity (like 13 ohms I want to say?) and when I run the water at full hot , it definitely starts out very hot so it's not an issue with the water not being hot enough to start.
The one common item I haven't checked is the dip tube, only because I believe the only way to access that would be to cut my plumbing apart to remove the cold-water input . The water heater isn't more than about 10 years old (I believe this building was constructed in 2005 or 2006) so I wouldn't really expect parts on it to start failing already. I'm just not sure what else to try, or if a 40g water heater just isn't enough volume to keep the amount of hot water I'm hoping for ?
any and all ideas are appreciated, these short showers are getting a bit frustrating!