Dust Eater™
A Dust Eater™ permanent furnace filter is a cost-efficient way to freshen the air around your entire home without ever having to buy another throw-away filter.
Remove pollutants such as dust, pollen and pet hairs, keep your heating system coils cleaner, and save up to 15% on your energy bills.
Pull ring design enables easy removal for quick cleaning. Clean your filter every 1 to 2 months and it will perform as good as new.
Backed by a Lifetime warranty! Order now:
| Part# | Nominal** | Actual | PreFilter Size* |
| 4028 | 14 x 25 | 13 5/8 x 24 5/8 | 13 x 24 |
| 4004 | 16 x 25 | 15 5/8 x 24 5/8 | 15 x 24 |
| 4010 | 20 x 25 | 19 5/8 x 24 5/8 | 19 x 24 |
| 4016 | 16 x 20 | 15 5/8 x 19 5/8 | 15 x 19 |
| 4022 | 20 x 20 | 19 5/8 x 19 5/8 | 19 x 19 |
*prefilter sizes are 5/8 smaller (on both dimensions) than the finished filter size.
**Nominal Size is the advertised / order size All filters are 7/8″ or 22.2mm thick
Guardian
A Guardian permanent furnace filter is a cost-efficient way to freshen the air around your entire home without ever having to buy another throw-away filter.
Remove pollutants such as dust, pollen and pet hairs, keep your heating system coils cleaner, and save up to 15% on your energy bills.
Pull ring design enables easy removal for quick cleaning. Clean your filter every 1 to 2 months and it will perform as good as new.
Backed by a Lifetime warranty! Order now:
| Part# | Nominal** | Actual | PreFilter Size* |
| 4030 | 14 x 25 | 13 5/8 x 24 5/8 | 13 x 24 |
| 4006 | 16 x 25 | 15 5/8 x 24 5/8 | 15 x 24 |
| 4012 | 20 x 25 | 19 5/8 x 24 5/8 | 19 x 24 |
| 4034 | 14 x 20 | 13 5/8 x 19 5/8 | 13 x 19 |
| 4018 | 16 x 20 | 15 5/8 x 19 5/8 | 15 x 19 |
| 4024 | 20 x 20 | 19 5/8 x 19 5/8 | 19 x 19 |
| 4036 | 14 x 24 | 13 5/8 x 23 5/8 | 13 x 23 |
| 4038 | 14 x 30 | 13 5/8 x 29 5/8 | 13 x 29 |
| 4040 | 20 x 30 | 19 5/8 x 29 5/8 | 19 x 29 |
*prefilter sizes are 5/8 smaller (on both dimensions) than the finished filter size.
**Nominal Size is the advertised / order size All filters are 7/8″ or 22.2mm thick
Our filters are available through Furnace and heating resellers. Check our Resellers Page to find a location near you!