u/Asleep_Two_1237

I live in an older condo/co-op building and ever since recent boiler work, there’s been this deep humming/rumbling noise that happens every 10-15 minutes, mostly at night. Sometimes it changes pitch before stopping. It’s loud enough to wake me up inside my apartment.

I finally tracked it down and it’s definitely loudest outside near the boiler exhaust outlet. There’s also now a clicking/ticking sound when it happens. The exhaust smoke/steam also seems heavier during the noise and sometimes smells faintly like gas/exhaust.

My HOA already had the “boiler guy” come out. He apparently didn’t identify anything obvious wrong, but he did replace the fan thinking that might help. Unfortunately the sound is still happening.

What’s weird is:

   •   it seems worse at night

   •   cooler/damp weather seems to make it worse

   •   it cycles on and off instead of being constant

   •   it almost sounds like resonance/vibration more than a normal mechanical noise

  

Anyone who works with boilers/HVAC recognize this type of sound?

Trying to replace the window trims after removing aluminum siding and painting - how am I to be nailing to the plaster with least chance of causing breakage?

Can any Home Depot paint pro gather enough of the partial info to understand what color this paint we used in 2009 was called?

Something ON WHITE ?

Edit: solved, it’s White on White