Bosch BGH96M080B3 furnace filter size
This furnace takes a 16 x 25 filter (side or bottom return).
The maker lists width and height only. Most filter racks next to a furnace hold a 1-inch filter; a separate filter cabinet usually holds a 4- or 5-inch one. Check the thickness printed on the edge of your old filter before you order.
Every filter option for this model
Where the filter goes
external: field-supplied side filter rack, bottom-return filter box/rack, or return grille; not supplied
The maker does not ship a filter with this furnace. The size above is the maker's recommended size at the furnace; if your home has a filter grille in a wall or ceiling, that grille sets the size instead.
How often to change it
General guidance, not from the maker's table: 1-inch filters every 1 to 3 months; 4- and 5-inch filters every 6 to 12 months. Change sooner with pets, smoking or construction dust.
About this model
| Cabinet width | 17.5 in. |
|---|---|
| Airflow direction | multi-position (upflow/downflow/horizontal) |
| Heat input | 80,000 BTU/hr |
| Efficiency (AFUE) | 96% |
| Model number note | trailing revision letter: B in 03.2024 submittal (e.g. BGH96M060B3B), C in 06.2025 IOM (BGH96M060B3C) |
How to read a Bosch model number
Source
- Bosch BGH96 Installation and Operating Instructions BTC 772003301 C (06.2025) RevC (installation manual, page 24): document. Read 2026-11-03.
- Bosch BGH96 Engineering Submittal Sheet 03.2024 (spec sheet (engineering submittal), page 14): document. Read 2026-11-03.
Check that the model number on your furnace label matches, and compare with the size printed on your old filter. If they differ, go by the filter that fits your rack.