
Originally Posted by
bryjcom
When I put tankless in I AWAYS go with the biggest and most efficient one I can get. Which is 199K BTU at about 95% efficient. The reason is that the incoming water temp is much colder during the winter months and it takes a lot more input to heat up that water in a short period of time. When that happens some of the smaller ones will start restricting the flow to meet target temp. That's when you get the complaints. If you're trying to go cheap, then forget about it. You won't be happy.
The "problem" with tankless is:
-They require 120 volts - 100% available, I can also have the electrician from work put a dedicated circuit in if you would prefer.
-They require new venting most likely through the side of the house. - Not an issue. Utility room has an exterior wall with a dryer vent already.
-They require a drain nearby - Already available in the floor.
-They usually require an increased gas line to them - I will double check, but I think I already have a 3/4" line for the furnace and water heater.
-They require more water line piping/modification - Understood, but would like to see a quote.
The biggest problem for me is the electrical. I a lot of times have to get my electrician out there to wire me up a circuit.
This doesn't mean people shouldn't at least consider them.... But when you factor all those things in, we start getting past $3K and even into the $4k scenarios due to the amount of work I have to do.
If you're looking to penny pinch and buy one from the Amazon and have me put it in, then forget about it.. Find a craigslist warrior to do that. But if you're looking for endless hot water then you might consider it.