If it's just you and the wife, and you haven't run out of hot water previously, I'd look at one of the electric hybrid units. Less expensive, as/more efficient, and easier to install. The great thing about tankless is the endless supply of water. If you're not going to utilize that, it's not worth the added expense. Me, I give my dogs their baths in the shower with a pull down shower head. Wash both dogs (GSDs), then myself, and 30-40 minutes later, still hot water. I was in to mine (Natural gas) about $1500, close to 10 years ago, doesn't seem that the price has changed all that much. The new property I bought is all electric, and I'll be adding a propane tank just for the tankless water heater and stove. I won't go back to a tanked unit.

Some people will bring up the annual maintenance. It's a hundred dollars for the kit, that you only buy once, takes 15 minutes of work and an hour of beer drinking once a year. It's not that big a deal.

Mine has no problem putting 130 degree water out of the faucet right now. During the summer, when the temperature of the supply water is higher, it'll hit 140 if you tell it to. They're all adjustable, with a 140 degree cap. It does take a bit longer to get to the kitchen sink at the opposite end of the house, but I'm a single guy and don't do a whole lot of dishes. It's not that much different than my old tanked unit.

We have two natural gas Rinai's on our house that are roughly 12 years old; we love them. To your question; each unit will cost roughly $2,800 installed when they need to be replaced. In 12 years I've spent $500 on a replacement control board for each unit (within 6 months of each other) and have flushed them once recently and they were clean as a whistle.

Shotgun, Have you actually put a thermometer at the faucets to check water temp.?

We have two natural gas Rinnai's on our house that are roughly 12 years old; we love them. To your question; each unit will cost roughly $2,800 installed when they need to be replaced. In 12 years I've spent $500 on a replacement control board for each unit (within 6 months of each other) and have flushed them once recently and they were clean as a whistle.

Did you flush them yourself or have someone else do it. If you did it yourself was it difficult?

Did you flush them yourself or have someone else do it. If you did it yourself was it difficult?

If you have the service valves already installed you can’t ask for anything to be easier. Pump . Hoses. Vinegar and bucket . There’s a few YouTube videos

Just watched a youtube video, pretty easy if it has the service valves, if not will be looking for a reasonable plumber.

I installed my tankless in 2011 without the cleaning valves never had a problem I don’t remember seeing those valves back then i’m going to Amazon and buy the valves Pump and hoses and install them if it’s not in a way you could leave all that stuff just hooked up and empty the bucket and leave it all hooked up for next time