Discussion:Air filter not acting up, but there's this *noise*...

The filter seems to be working okay, based on the amount of particles it has accumulated over the heating season but now someone with better hearing than I have has pointed out the "only-dogs-and-young-people-who-didn't-go-to-rock-concerts-can-hear-it" whistle coming from the filter (it's not coming from the voltage converter, it's coming from the business end of the filter itself).

Additional facts are available, but I don't know which ones to toss out here...

The ~20kH "singing" is there even when there's no air going through/past the filter, as when it's been removed from the box where it lives while it's working as a filter. The noise seems to come from the electronics in the end of the filter frame near where the electric power goes into it.

Seriously, this is just the normal operation of the unit Harry is dealing with here. It's called "electro static" for a reason. It is constantly producing electric charge, probably a negative charge to attract the positively charged dust particles.

The problem is not with the filter. Harry just needs to build a 2,000 foot addition to his home and put the HVAC unit way out on one end of it far away from where actually he lives. A cheaper solution would be to replace the drywall in the room where his heating and air unit is located with a professional soundproofing drywall, the downside to this solution is that you would never know if anything was wrong in this room until the unit actually exploded and took the house and it's occupants up into the clouds with it. An even cheaper solution would be to wear ear plugs while in the house, which has the side benefit of reducing unwanted "spousal static" as well.

It could also be that Harry's entire home is in an overpowered condition. Condition red. It could be a neighbor with a windmill or solar power leaking extra juice into the system, or Harry's generator could be leaking back into the house, or some other cause which is over powering his electrical system and the little converter can't handle the load. Too much juice is being fed into the filter. Try replacing the wall wart.

After thinking it over, it might be time to put in a call to "This Old House" and see what they have to say about it. Or what about a call to the Master Handyman (and salesman) Glenn Haege? If you have a problem, Glenn has a product to fix it.

P.S. Signal filters whistle when they need to be cleaned. WHISTLES WHEN IT NEEDS TO BE CLEANED A clean filter is important to the operation and efficiency of your HVAC system. Cleaning every 2 - 3 months will ensure your Signal Air Filter operates at peak efficiency. In case you forget, Signal Air Filters have a built-in whistle to remind you when they need cleaned. The whistle sounds when the filter is 80% clogged.

I wonder if Hamilton Beach whistles or whether your installer slipped in a Signal when you weren't looking?

I've tried everything to make the "revolutionary" microfiber cloths work, including not using dryer sheets or fabric softener of any kind while laundering them. Is the microfiber or microfibre cloth for real, or is it just more of the same BS the modern world seems to be full of?

Tinnitus comes from the Latin word tinnire, meaning "to ring." Tinnitus can be perceived in one or both ears or in the head. It is usually described as a ringing noise, but in some people it takes the form of a high pitched whining, buzzing, hissing, humming, or whistling sound, or as ticking, clicking, roaring, "crickets" or "tree frogs" or "locusts", tunes, songs, or beeping.

I hear crickets all the time, even when there is snow on the ground!