How to tell when water heater is at max?

Gdetrailer wrote:

Old-Biscuit wrote:

AquaHot, HydroHot, Oasis ------not the typical tank RV Water Heater

Attwood 1400W element
HERE
4779 BTU

Suburban 1440W element
HERE
4915 BTU

Gas 9000 BTU input, assuming say 60% efficiency 5400 BTU, most likely efficiency is closer to 70%-80% or about 6300 BTU-7200 BTU..

So, unless you have flunked math, gas IS faster, gas has a much quicker recovery and gas will sustain a longer draw..

And for the record, I ALSO HAD a Suburban 6gallon gas only, at one time, only took 10-15 minutes till it had scalding hot water..

RV water heaters unlike a sticks and bricks are typically set to 130-140 F temps, which is way above scalding point, it is intentional that they are set to high temps.. It allows you to heat a smaller amount of water bet yet draw for longer time.. Basically you will mix 1 part hot to 4 parts to cold to get a hot shower..

So if you use 1 gallon of water per minute and shower for 10 minutes you will have used 2 gallons of hot and 8 gallons of cold in that time frame.

Even if you used 1 to 1 that means a 6 gallon tank will get you a 6 minute shower..

Now if you DROP the amount of water used, you can now extend your time..

.5 gallon of water used per minute now means your shower can last 12 minutes even at a 1 to 1 mix..

I have personally never ever used anywhere near 1 to 1, basically slightly opening the hot water till it trickles then adding in much more cold water until I get a spray.. I am sure I am mixing 1 to 4 or 1 to 5.. And HAVE had no issues getting a darn hot 15 minute shower with hot water to spare..

Folks don't seem to understand that you cannot treat a RV like a sticks and bricks.. A sticks and bricks has a 40-50 gallon water heater..

Might read my 1st post
That info was covered
Atwood gas is 6 gal/8000btu & 10 gal/10,000btu
Suburban gas is 12,000btu (6,10, 12, 16 gal)

T-stat temp settings fr both brand listed

Also recovery rates were listed showing electric slowest, gas faster, both fastest