In a 2 story house, my upstairs bathroom takes ~15 seconds to get HOT. About the same as a tank system.
You clean it ever couple years or pay someone $100 to come out and clean it :lol:
It’s not a big deal
There are different recirculation settings you can use and program for use during peak hours (i.e.- 7am-9am and 5pm-6pm) - that cuts down on heat time and power usage for even more savings, but because it’s only me, I’ve never bothered to look into programing it. My theory is that if it works, leave it the fuck alone.
LOL. Seems he never took a cold shower because a woman hogged all the hot water. 
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On demand vs. heating water you may not need for many hours just sounds more efficient to me. Plus anyone that had a tank blow out on them knows that isn’t a very good time. I’ll be looking into tankless next go round, for sure.
I keep my house at a toasty 74 degrees. It’s 2000 sq ft. My gas bill is less than $70/month.
Must be very well insulated, awesome. That’s a really low bill, even if you’re on balanced billing.
How many bathrooms do you have in your house? How many sq ft is your house? You can get a good tankless set up for around $1500 if you know someone in the trade. Figure in another $100 or so for Shark Bites so you don’t have to sweat pipes that just had water in them, gas line unions, 3/4" copper, and flex gas line and you’re good. I really like my Naiven.
Well the thing is parts availability… If your tankless water heater goes and you need a gas value or a sensor that’s specific to that unit, is it gonna be available at a parts supply store the day of or the next day? Or will you go to the supply store and they have to order the part and you have to wait a couple days? The old traditional style you will probably be able to fix right away.
I had a part replaced under warranty and I had it next day(saturday delivery)
It’s not the 1990s anymore places can actually get you parts extremely quick.
Schaeffer Plumbing has 99% of the stuff I would ever need.
Buy a tankless. Then tell the wife that you need to finish the basement to capitalize on the newly available foot of floor space.
Get yourself a flow meter for the inlet, some TC’s on the outlet and develop the PM plan so that you can keep it running like new.
I’m sure you could leverage some of your industrial skills and get it reliably up and running for less than $14k
Why no direct vent? Is too much plumbing to relocate if you put it on an exterior wall?
Direct Vent = Must discharge above roof line. (aka needs a chimney)
Powervent = blow it out the side of the wall.
Funny though, an inlet filter and a dp gauge might be worthwhile now that you mention engineering nonsense…
There is an inlet filter…
well hot damn
I’ve got the same unit in my house. Had it installed over a year ago and it’ll pay for itself much quicker than I expected. Our propane bill is much smaller now that we aren’t heating water for over 23 hours a day and not using it.
You should “T” in a cold water leg with a solenoid and timer so that you can still force people out of the shower with cold water.
Don’t forget the shower beer timer bypass switch.
ROI will be much longer with natural gas since it’s so much cheaper than propane.
ROI occurs the first time I don’t have to think, “Will there be enough hot water for a shower?”
My propane hot water bill is nothing. And how long of a shower do you guys take? I have never run out of hot water.
It’s not the length of my shower that made me wonder if I was going to have enough hot water. But, if I was the last person to get to the shower, and the dishwasher was running, then it was going to be miserable. My 50 gallon hot water tank was on the fritz so it was a no brainer for me to go tankless.