We had 7, 14 & 18 year old grandkids (2 girls) with us for 2 days last week. Everyone showered. After they were introduced to how to operate the water faucets we had no problems. Our heater requires us adding a very slight amount of cold water to keep the temp at the faucet at a bearable level. There is some fluctuation in the water temp but no shocking variations.
When the WH quit (in March) we called Girard direct and they were incredible. Great customer service. In our case, they walked me through a testing procedure and then overnighted 2 parts, I installed them and we have had hot water on demand since.
When we bought our Precept, we had in the contract that if we did not do well with the Girard system, the dealer would replace with a 6 gallon DSI gas/elect. We still have the Girard.
If I were to build my Precept from beginning, I would opt for another WH system. There are new systems out there that provide reliable hot water.
Otherwise, we are really happy with Bertha after 5000+ miles & 15 states. We're just getting started.
Darrell, Mary & K.C. Toller Mix
In our hearts: Goldens, Tess & Jericho
'15 Jayco Precept 31 UL "Bertha"
'13 Wrangler Sahara...AKAFUN
Roadmaster base plate
Ready Brute Elite towbar and brake combo