Maybe it isn’t the ducts but under a carpet and pad. Perhaps any wooden floor that soaks it up. Cats like to go in corners of floors or hidden places- look all around first. Maybe there is a dead one left behind sucked up against the coil. Started taking vent covers off and finding pet food in the duct work.

Looks like they swept everything into the floor vents for the past 15 yrs. I took the vacuum to the duct works and have found all kinds of treasures. We don’t have floor ducting here much except in mobiles. Yea- it’s probably the duct. The only thing that gets rid of cat odor is removal of the item that was urinated on. Get rid of the cat to.

Ok i dont think a cat would crawl into flex and piss and try to back out. But it sound like you should replace duct if they are filthy. I have been in many rental homes that have had carpets cleaned and the musky piss order is horable when carpet is still wet. I would pull back carpets in corners and smell. Many times by a slider door cats piss because they see a cat outside the window and want to mark their teritory. If you find that you need to paint the wood with Kilz paint or replace wood.

It wont go away on its own for many years. Male cats piss on walls too ! I have seen floor joists completely eaten away by their insidious urine. Infact, when I was home shopping, I wouldn’t even bother going in the house if I smelled a cat. And one always knows if a cat owner lived there. Cant stand the lil bastards!

Now the freaks are on television, the freaks are in the movies. New duct installed in attic would be even better if you are talking about replacing duct in a crawl space. But the only permanent solution is to remove carpet AND padding, and seal the floor underneath, whether it’s concrete or wood. I learned this lesson the hard way when I did apartment turnover and the new tenant, usually without pets, would complain about pet odors in spite of everything in the place having been thoroughly painted and cleaned. And regarding your ductssince the previous owners chose to use them as a built-in dust pan for God knows how long, replacing everything is likely your best bet. I would also have the indoor coil and blower cleaned, and insulation inside the air handler or furnace treated with an odor neutralizeror replaced also. Higher moisture concentration moves toward lower moisture concentration.

1 question asked by NEW MEMBERS. HVAC Product Gallery: Week of Jan. 2018 AHR Expo Skates into Chicago! The place where Electrical professionals meet. All times are GMT -4. How to Get Rid of Dog Urine Smell. You love your dog, but inevitably they may have an accident in the house every now and again.

Dried urine has a strong ammonia smell that can be difficult to get rid of. By treating fresh urine promptly, removing old odors and preventing accidents in the first place, you can eliminate dog odors and make your home smell fresh again. Blot the urine right away. If you see your dog pee in the house or find a wet urine stain, blot the spot with a clean towel immediately. This will soak up as much urine as possible, diminishing the possibility of the pee soaking into your rug or upholstery. Use water and a few drops of soap to dilute the damp spot. Get a bowl of warm water, and put a few drops of mild soap in it. Use a clean towel to wipe the wet spot with the soapy water, blotting with a dry towel. You can do this a few times until no traces of the original dog stain remain.