I wondered if someone would doubt me?
The data I post was gathered off 10 new NG appliances on demonstration in a lab, each unique in brand. Standing pilot light, naturally vented, also insulated with an aftermarket blanket kit. They were gathered in a row, Plumbed in isolation to one another, each with an expansion tank and filled to city pressure. Each gas train was on a separate gas meter. They were brought up to code set temp - the meters were zeroed and they were left on set at 120 degrees for 30 days.
I only post the result of that test - as it was related to me.
I have no documentation - I have no web link to show my expertise - Maybe I just made it up! At best its second hand information.
So it becomes a --- Believe it or not thing! Your mileage may vary.
And yes I do turn off my NG heater at the farm every Sunday night - along with the well pump breaker-- only to turn that business back on the following Saturday -- If I draw from the left tap immediately upon arrival - the water isn't 120 degrees -- but its not well temp either. I guess after 6 days there should be some standby temperature loss
-- but lets review -- First hand information now.
the average DHW appliance just sitting there did use x therms of energy.. My NG bill at the cottage in the summer is only for DHW and the dryer, but that use - several loads of laundry and several long showers - a Large tub fill or two -- I still only use a few therms of NG, a week.
Ill stand by my statement. A Traditional DHW appliance just standing in the basement holding 40 gallons of DHW for immediate and hi demand use -- IS NOT and energy hog.
A dripping or always open left faucet is.