Nispira4-in-1 True HEPA Replacement Filters Compatible with Tredy Air Purifier TD-1500, 3 Pack

I seem to be using a lot of filters in my house with three cats and a dog. These are really helping keep the amount of dander to a minimum. I especially like to use my air purifier at the same time as the robotic vacuum because it helps keep the dust from getting on walls and furniture. These are hepa filters so expect them to catch the small particulates you regular vac kicks up. I live in a 130year old house in Florida and these really do take more pollen and dander out of the air than my hvac can. I’m the beginning stages of running an air purifier you’ll need to change the filters more. I changed mine about once a month for the first few months until the air in the house was fresher. The carbon really does cut down on smells too. Cat litter box, baby changing table, or near the kitchen trash the air will be cleaner. I move my unit around so I need new filters more often than most. Will order again.

I wasn’t sure if they were going to fit my humidifier since they were a different brand, but they fit perfectly! And best of all, you couldn’t beat the price

These are great filters, install them… Wait about two months and then check them. You will see it is doing the job collecting all of the nasty dirt in the air.