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Prairie_Seagull

(4,953 posts) Fri Jul 17, 2026, 04:36 PM 23 hrs ago

In most homes your thermostat has a setting

that will just run the whole house fan. Usually set to auto, change to on and it will run full time to aid in filtering interior air. If possible install clean filter or filters.

Good luck everyone.

3 replies

= new reply since forum marked as read

Highlight:

In most homes your thermostat has a setting (Original Post) Prairie_Seagull 23 hrs ago OP

;-{) THIS DIY AIR PURIFIER WORKS GREAT Goonch 22 hrs ago #1

Don't need utube either orthoclad 22 hrs ago #2

Look for air filters with a Merv rating of 11-13 Kaleva 21 hrs ago #3

Goonch

(6,158 posts)

1. ;-{) THIS DIY AIR PURIFIER WORKS GREAT

Reply to Prairie_Seagull (Original post)

Fri Jul 17, 2026, 04:55 PM

22 hrs ago

https://www.youtube.com/shorts/6PvlYsxvxjw?feature=share

(You don't need the bungee cords - fan and filter are 20 by 20 inches)

orthoclad

(5,471 posts)

2. Don't need utube either

Reply to Goonch (Reply #1)

Fri Jul 17, 2026, 05:49 PM

22 hrs ago

Just put a furnace/AC filter on a box fan. Tape it on. Match the dimensions best you can.

There. 1 second of text.

Kaleva

(40,538 posts)

3. Look for air filters with a Merv rating of 11-13

Reply to Prairie_Seagull (Original post)

Fri Jul 17, 2026, 05:56 PM

21 hrs ago

There are higher rated filters but make sure your HVAC system was designed to handle them.

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