Brands › Trane › XC95 (TUH3/TDH3)
Trane TDH3D120ACV5VA furnace filter size
This furnace takes 2 filters, each 16 x 20 x 1 (downflow top (external, in return duct) or downflow top (external)).
Every filter option for this model
| Where return air enters | Filter size (inches) | How many |
|---|---|---|
| downflow top (external, in return duct) | 16 x 20 x 1 | 2 |
| downflow top (external) | 16 x 20 x 1 | 2 |
Where the filter goes
Upflow: factory supplied, in blower compartment bottom or side; downflow: two filters factory supplied, external in return duct.
The maker ships a filter with this furnace.
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 | 24.5 in. |
|---|---|
| Airflow direction | downflow/horizontal |
| Heat input | 120,000 BTU/hr |
| Efficiency (AFUE) | 92.1% |
| Model number note | trailing revision letter varies |
| Also sold as | American Standard ADH3D120ACV5VA |
How to read a Trane model number
Source
- Trane Product Data XC95 TUH3/TDH3 Pub. 22-1806-04 (2009) (product data (spec sheet), page 7): document. Read 2026-11-03.
- Installer's Guide 18-CD23D1-9 (*UH3/*DH3, XC95) (2011) (installation manual, 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.