re: Tankless hot water heaters?

I have a Rinnai 9.4 GPM. I like it, but I only recommend it if you are looking for endless hot water. Newbuilds are different, but the cost of the unit + labor + requirement for stainless exhaust tubing is a huge price difference when replacing a tank in an older house. It cost me twice as much as a tank. It all depends where the tank is located. It saves money per month but I don't see it paying for itself over its lifetime.

I like the fact of maintaining an accurate temperature. It holds a constant and accurate temp. Its quiet and sounds like a muffled jet engine.

I got a seven year warranty parts and labor. From what I am told, you only have to replace parts to the unit instead of the whole unit, so it can last 20 years.

If you have hard water it needs to be flushed every year.

Get it only if you desire endless hot water. If you have a big house I recommend installing one near the kitchen area and another near the master bedroom. When you turn on the hot water it has to push all the cold water out of the line from the unit + the time it takes to heat the new water. In essence it takes me about 20-30 seconds more to get hot water than from a tank.

I will never run out of hot water. It's worth it to me.