We like Quiet. So....

Cyclist77 · January 26

So will a mod con boiler in the basement be heard? I'm not seeing sound ratings on any model. Maybe I am missing something?

LRCCBJ · January 26

It will not be heard.

hot_rod · January 26

But don't put it under the bedroom :)

Exhaust noise can be annoying, so keep that in mind for termination. I'd do whatever possible to get the vent out the roof.

Lochinvar made a model called the Cadet. It was in a 1-1/2" thick PP foam jacket. Quietest boiler I ever owned.

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kcopp · January 26

Mine is under the bedroom. The only this I usually hear is the condensate pump dumping…

Cyclist77 · January 26

It would be under the living room. I can hear the boiler circulator when it comes on, so I'm wondering if the exhaust vent fan would be a concern? Navien is the one I am considering as there are 2-3 service companies in our area.

LRCCBJ · January 26

I can hear the boiler circulator when it comes on

You'd have to have ears like Mr. Spock!

ratio · January 26

If you're looking for near-complete silence, maybe two-pipe steam with orifices? If you use an electronic LWCO,the only moving parts are the gas valve diagram and the vaporstat armature.

Cyclist77 · January 26

My ears aren't pointy. At least I don't think so!

Cyclist77 · January 26

Though my wife says I can't hear!!

JUGHNE · January 26

My office is above the boiler room. I can sometimes hear one or more pumps start.

But I can not hear the boiler at all, have to look out the window to see if it is firing.

My wife says I can't hear either, mainly because she talks to me as she walks away or is in another room facing the corner……

LRCCBJ · January 26

https://forum.heatinghelp.com/discussion/comment/1838064#Comment_1838064

I cannot see how you can hear any of the pumps start. I can't hear a Taco or a Grundfos if I'm standing right next to them. Are you sure you're not hearing the fan………..now that makes a bit of noise………..especially when they are not properly balanced (most of them).

PC7060 · January 26

our dining room is over the boiler & never hear the Modcon boiler. I only hear as i walk down basement stairs.

We could hear the 140kbtu CI monster and 1/6 hp B&G circulator anywhere on first floor. On second floor we were entertained by clanging of pipe and radiators as the 180f water hit the 68f metal.

mattmia2 · January 26

I hear the relays for the circulators…

I also sometimes hear the fan and the combustion. Actually sounds like a car off in the distance.

HVACNUT · January 26

System 2000 EK-1F Gas or the Accel CS. IDK which one is quieter. I can't hear either of them.

pecmsg · January 27

don’t move to NYC

Intplm. · January 27

Very quiet (if) installed properly. You can find videos on the internet that show some that are very loud due to improper installations.

Cyclist77 · January 27

What part of a installation causes a noisy install?

Intplm. · January 27

The biggest one I have had to correct was a gas line that was too small. It made the unit make a very distinct and loud vibration sound when starting.

hot_rod · January 27

hoot, whoosh, resonating are all sounds possible from lack of proper set up. Check and adjust fuel pressure, set or adjust with combustion analyzer.

Proper venting, proper fuel line sizing, piped and adjusted to prevent excessive short cycling, good water quality. These are all part of a proper installation and commissioning.

We like Quiet. So....

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