We just had a Nivien Tankless NR210-A system installed this past weekend. Immediately we had 2 major concerns about the system. 1. The noise factor…each time you go anywhere near the hot side of the faucet you hear this revy-up motor sound somewhat like a delivery truck pulling away. This sound can be heard throughout the house. Also, with every use now we hear this refilling process like when you flush your toilet. After having the ARS people back out here twice, I am told that will not go away. My concern is when my family gets up in the middle of the night for a bathroom break and rinsing of their hands , am I going to be awaken by this unwanted noise ??
#2 The worse part is we are ok with the amount of hot water we are getting for the bath. BUT, they increased the temperature to 130 from 120 today, and we still do not get the hot water in the kitchen we had with the 40 gallon tank/gas system. The ARS plumber man said he has this same system in his home and up’d his temperature to 140. I am very concerned about the level of sanitizing going on here. We have the 3/4 inch piping so what is going on?
Tom: Don’t drink out of the hot side. Drink out of the cold side.
Charlie: It’s only hot water right?
Tom: Unless it’s really cold out I guess.
Tom: And wanting maybe to make some hot cocoa in the middle of the night or something.
Tom: Well, you know what?
Tom: I’m not going to say anything.
Charlie: I’m trying to help her, here, facilitating. I’m doing what you say.
Tom: You know what, that’s a big complaint about the gas on demand. It’s like a blow torch. It literally is. It’s just a (whoosh) thing going on so.
Charlie: Well, that’s interesting, because her other half of her question says, is that the worst part is that she’s okay with the amount of hot water, but they’ve increased the temperature to 130 from 120 and we said that …
Charlie: That’s what she wants to know.
Tom: No, in fact, there’s no reason for it to be that high unless it’s because of your dishwasher and you don’t have a booster heat. If you’re going to use the dishwater, you have to have that 130 range, so it cleans the dishes really well and rinses the soap off clean. Besides that, if you have a booster heat on a newer dishwasher, you don’t need to have it near that hot. I’d say 110 would be fine. You don’t need to use cold water to mix it down, just a little bit because you want more of the hot water going through and you’ll use less cold water. There’s no reason to have it that high.
Charlie: As far as the noise, learn to like it. That’s what …
Tom: Well, that’s why we mount them on the outside on new homes.
Tom: So, people don’t have to hear all that and they have the exhaust fan, which accentuates the noise and you’ve got this big blow torch blowing.
Charlie: It’s like an old stock car has a glass pack exhaust pipe on it.
Tom: Sort of like, yeah.
Charlie: With some Cragar mags underneath the sink and you’re off to the races.
Tom: Well, didn’t you do that to your truck.
Charlie: No we haven’t put the mags on it yet.
Tom: Anyway, the noise has always been an issue. That’s one of the reasons on new constructions we’re routing them outside.