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'33,'48, '51, '52, '54, '55 (3), '56, '60 LeSabre 3 sp stick.
264 powered '53 Mercury
322 then 264 powered 55 Ford
264 powered '56 Chevy
Presently - 431 nailhead powered '82 C-10
most tankless ive seen a lot have 120 volt electric ingiters so low pressure shouldn't make a difference on them. any water moving through it should trip that. there are some that use water valve only to fire the gas. those I could see pressure issues.
If the circulator pump is put on a timer, similar to what is used on a lamp to turn it on and off when nobody is home, you can set it to only run at times you will most likely need instant hot water. That will minimize extra heating of the water while in circulation mode.
honestly you just turn it on wait about a minute or two its hot. its not like it a ten minute process. other than washing hands its no big deal. dishwater wait a min before starting. shower chill on the commode for minute or take a dump or something while it warms up.
I have a very new 50gal gas water heater, and in AZ it seems they are always installed in the garage. Being in the desert, everyone tends to be very water conservation-minded, as you would expect. I've always had gas water heaters, and love them as long as the capacity is sufficient. The problem we have here, is that the master bathroom is at the farthest possible point from where the water heater is located. It honestly takes about 3 minutes running the shower before there's any hot water. How the heck is putting the heater in the garage conservation-minded? Even the kitchen sink which is about mid-house, takes a couple minutes to get hot water. Aaaaand that's about the only complaint I have about living here.
I have an uncle who is as cheap as they come. he is tremendously wealthy. he has a camp in the Adirondacks that they spend the summers at. it's pretty remote. the house is fed by a spring. the water comes out of the ground at 38 degrees. his electric hot water tank couldn't keep up during a shower. the incoming water cooled the tank right off and the heating element was ineffective. the electric meter was spinning too fast for his liking as well. he eventually rigged a system so the incoming water to the tank took a loop outside the camp and onto the hot black roof of the camp. he had a 50' black hose coiled on the shingles. the water returning to the tank was warm. it was like a preheater system. brilliantly simple and effective. when they leave for Florida he drains it. if i lived in the south or out west I might rig a similar system. neat idea anyway.
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I don't know how turning on the kitchen faucet first will speed getting hot water to the master bath, we just turn the shower on and wait. Either way the hot water has to travel from the garage all the way to the far end of the house. There's really not any solution, as long as the water heater is where it is. Not a major issue, just annoying.
Your situation is one that the circulation system I posted in #28 would benefit from. I did a kitchen remodel for a customer about 5-1/2 years ago. Their water heater is about 40 ft from the kitchen as well as the master bath. We installed a Rheem 40 gal. water heater with an extra 1/2" return line for the circulator pump. We set the timer up to operate the pump during the hours they usually need hot water. They have hot water at all faucets right away because the pump circulates to the farthest point from the water heater.
You can also let the pump operate 24/7 if you want instant hot water at all times, but it is a little less energy efficient.
They have been very happy with the system.
Last edited by 64 skylark mike; 01-12-2017 at 12:05 AM. Reason: clarify statement
Another option.... an under-sink, point of use electric heater. A small unit for one sink would be fairly low cost.
The benefit would be it only uses power while it's heating water for the first few minutes until the hot water from the tank gets there.
If you want to supply a sink and a shower it'll require a higher capacity unit which will add cost.
Back to my system...
I'm still not convinced a whole-house tankless electric is best for me.
Currently considering a conventional electric tank but running it on a timer. Set it to warm up for a hot shower, and turn it off while I'm at work or sleeping.
Found an informative website on water heating. Features comparisons of different systems and tips to reduce costs. Lots of info to take in!
Ace Hardware has a sale on Kenmore water heaters until 1/16. $300 for basic heater, 6 year warranty. $435 for unit with 12 year warranty.
Thinking a tankless heater in the garage would work for supplying warm water to a pressure washer for wintertime car washing!
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