comments:
https://a.co/d/06vBHFNs one of these in a very confined space will kill everything but you will need a full overhaul to replace the pads after the fact. Bonus you can use it for car trunks, bathrooms, closets, whatever has a stale kind of smell and it will refresh everything
I have a little guy that puts out a TON! I just move it room to room. I don't need a huge ozone generator. https://www.amazon.com/Generator-Industrial-Purifier-Deodorizer-Square/dp/B0CYCL5T9F/
Airflow is good. I don’t think I’d use a 24/7 exhaust fan. I’m going to talk about ozone, so please read all of it for safety information and also before anyone chastises about ozone. I’ve dealt with musty house syndrome. I’m on my second ancient musty house. I’ve been successful. I’m talking about what worked for us, not what I think others should do. When we bought our current house, we knew it would be musty. A wet, wet basement with poor drainage. We took care of the drainage, added a sump pump, etc. but the mustiness remained. First, treatment: -Our sump pit is essentially sealed shut. -I bought really long hoses and blindly vacuumed out the horizontal duct work, and paid particular attention to the 90 degree bends where they turn vertical. I was surprised at how much dirt and waste was in them, but it was ducted in the 40s, so I guess that’s to be expected. -We added a layer of cement over and around the cistern lid, which was previously sealed, but frequently would cause seeping through the basement floor. (Yes, I want to open it. No, my spouse won’t let me.) -Around the perimeter, we used type n mortar to fill deteriorating concrete on the floor, where there was exposed dirt. I used type n for its strength and moisture capabilities, and it would be touching both old cement and limestone rocks so it seemed the best fit. -We also used a 15% vinegar solution on all the joists and subfloor (from beneath, in the basement). We diluted weed killing vinegar by half. We suited up - eye cover, good respirator, paper suits, gloves. We sprayed every wood surface in the basement, heavily. Then we left for four hours. Then we left for four more. Once aired out, it was great. Then, maintenance and prevention: Every Saturday morning, at 2 am for 15 minutes, two ozone generators and two box fans turn on. They are in the basement and are controlled by timers. The ozone generators are not large, and one is placed near the furnace. Five minuets later, at 2:05 am, the programmed thermostat turns the hvac circulation fan on for 15 minutes. So the ozone accumulates for about five minutes and gets circulated by the box fans in the basement. Then the house fan pulls it out, and disburses it a bit on the first two levels of the home as well, but at much lower concentrations. We do not smell ozone when we wake up. Couple of things about this: our bedroom is on the 3rd floor. We are not getting exposed to ozone. Our a/c is minisplit, and the 3rd floor is not connected to the ducted furnace that serves the basement and first two floors in cold weather. The guest room is on the second floor and I turn everything off when guests come. Our pets sleep with us on the 3rd floor. Ozone safety. This has been a game changer for us. We have a sealed cistern in the basement and heaven knows what it’s like in there. (I want to open it. Husband says nope.) In humid weather, we do run a dehumidifier in the basement on continuous and let it drip down the sump pump pit. During heavy rains, when we might get a little water seeping through the floor, I just run the box fans non-stop. I pour water down the floor drain every Sunday when I do my chores. Good luck!