Bosch furnace filter sizes
Pick the start of your model number, or search below.
How to read a Bosch model number
York, Coleman and Luxaire are Johnson Controls brands that share model numbers, and the Bosch and older Nordyne mobile-home furnaces are covered here too. In the York-group tables, the cabinet letter plus the blower size digits pick the filter row.
Bosch BGS80 and BGH96
Example: BGH96M080C4B
| Characters | What they mean |
|---|---|
| 1-3 | BGS = Bosch gas single-stage 80%, BGH = Bosch gas high-efficiency |
| 4-5 | AFUE class (80, 96) |
| 6 | M = multipoise |
| 7-9 | input in thousands of Btu/h |
| 10 | cabinet letter: A 14.5, B 17.5, C 21, D 24.5 in (verified against submittal dimension tables) |
| 11 | nominal cooling tons of blower (3,4,5), inferred, not printed |
| 12 | revision (A, B, C) |
How it connects to the filter: Bosch filter tables are keyed by cabinet width only.
Where this comes from: Bosch BGS80 Engineering Submittal Sheet 09.2018, page 4; Bosch BGH96 Engineering Submittal Sheet 03.2024, page 4.
Related families from the same maker group
These share parts of the numbering system with Bosch, so they can help with an older or rebadged label.
York group: older T- and Y-prefix families
Brands: York, Coleman, Luxaire, Fraser-Johnston, Champion (T-prefix models are shared across JCI brands; Y=York-only, C=Coleman, L=Luxaire for YP9C/CP9C/LP9C).
Families covered: TM9V, TM8V/TMLV, TM9E, TM9Y, TM9X, TM9T, TM9M, TM8X/TMLX, TM8E/TMLE, TM8T/TMLT, TM8Y, TG8S/TGLS, TG9S, TP9C, YP9C, TL9E.
Example: TM9V080C16MP12C
| Characters | What they mean |
|---|---|
| 1-4 | family (T=tri-brand/York, M or G = series, 8/9 = 80% / 90%+ AFUE, L in 3rd position = low-NOx 80% version e.g. TMLX, TGLS; last letter = generation/motor type e.g. V variable speed, E standard ECM, X, Y, T, M modulating, C (P9C) modulating) |
| 5-7 | input in thousands of Btu/h (040 = 40,000; 080 = 80,000) |
| 8 | cabinet letter: A = 14.5 in, B = 17.5 in, C = 21 in, D = 24.5 in wide |
| 9-10 | nominal blower CFM in hundreds (08 = 800, 10 = 1000, 12 = 1200, 16 = 1600, 20 = 2000, 22 = 2200) |
| 11-12 | MP = multi-position |
| Rest | revision digits / letters (11, 12, 13, C), vary |
How it connects to the filter: Filter tables are keyed by nominal CFM + cabinet letter, so characters 8-10 select the row.
Where this comes from: York TM9V Technical Guide 5425616-YTG-E-0122, page 2 (Cabinet and duct dimensions table: TM9V080C16MP12C | 1600 | C | 21); York TG8S Technical Guide 363657-YTG-H-0616, page 2 (TG(8,L)S... lists TG8S and TGLS; TG(8,L)S080C22MP11 | 2200 | C | 21); York TM9X/TG8S/TM8X installation manuals (theacoutlet copies), page 9 (Table 3 Cabinet and Duct Dimensions: A=14 1/2, B=17 1/2, C=21, D=24 1/2).
Known exceptions:
- TM9E060A10MP12: tech guide dims table says 1200 CFM, IOM says 1000 CFM for 60k/A (filter row is the same either way)
- TM9X040A12MP11 appears once in a blower table of the TM9X tech guide; dimension/rating tables say TM9X040A10MP11 (treated as typo)
York Y-series (2024 and later)
Brands: York.
Families covered: Y81E, Y82E, Y82V, Y91E, Y92E, Y92V.
Example: Y81E080C16SMPS1
| Characters | What they mean |
|---|---|
| 1 | Y = York |
| 2-3 | 81/82 = 80% non-condensing (single / two stage), 91/92 = 95-97% condensing (single / two stage) |
| 4 | E = standard ECM blower, V = variable-speed ECM |
| 5-7 | input in thousands of Btu/h |
| 8 | cabinet letter A/B/C/D (same widths as legacy) |
| 9-10 | nominal CFM in hundreds |
| 11 | S = standard NOx, L = low NOx |
| 12-13 | MP = multi-position |
| 14-15 | revision (S1, C1) |
Where this comes from: York Y81E Technical Guide 6368917-YTG-B-1024, page 7 (Y81E040A12S(L)MPS1 ... A ... 14 1/2); York Y91E Technical Guide 6414251-YTG-A-0624, page 7 (Y91E026A08SMPS1 A 14.5).
Not fully confirmed: Stage/motor meaning of digits 2-4 inferred from document titles (Y81E 'Single-Stage Standard ECM', Y82V 'Two-Stage Variable Speed ECM'); not from a printed nomenclature chart.
Nordyne M7RL (manufactured housing)
Example: M7RL 060A BWT
| Characters | What they mean |
|---|---|
| M7 | manufactured-housing 95% downflow series |
| RL | single stage (TL = two stage M7TL) |
| 045/060/072 | input in thousands of Btu/h |
| A | per spec sheet; not decoded in doc |
| AW/BW | cabinet A or B, front (door) return |
| T suffix | top return (AWT/BWT) |
Where this comes from: Nordyne M7RL Technical Specifications 718D, page 1 (Shipping Weights: M7RL 045A AW* ... *May include suffix - T); Nordyne M7RL Installation Instructions 709404D, page 11 (Model numbers ending in AWT & BWT are factory configured for the return air to enter the top).
Not fully confirmed: A/B as cabinet is inferred from 'M7RL B Cabinet Shown'; widths not stated.
Nordyne MG2S (manufactured housing)
Example: MG2SB045F2ABM1
| Characters | What they mean |
|---|---|
| M | manufactured housing |
| G | gas furnace |
| 2 | two stage |
| S | efficiency 96.0% (R = 95.0%) |
| B | cabinet fits 18in coil / cabinet option |
| 045/060/072 | input in thousands of Btu/h |
| F/T | F = front return downflow, T = top return downflow |
| A | 115V 1ph |
| 1 | revision |
Where this comes from: Nordyne MG2S Technical Specifications 257F-0725, page 7 (MODEL IDENTIFICATION CODE chart).
Not fully confirmed: The chart's column order is hard to read in text extraction; F/T, input and S/R are certain, other positions are best-effort.