HVAC Serial Number Lookup
Bosch Serial Number Lookup
Bosch is part of the Bosch. Enter the serial from the data plate below to get the manufacture date with a character-by-character explanation, the unit's age, its refrigerant era, and the warranty picture.
Decode schemes compiled from manufacturer literature and inspector references, cross-checked across two sources wherever possible (Bosch sources: building-center.org + howtolookatahouse (month/week split not documented)). Single-sourced rules are labeled low confidence instead of being presented as fact. A date stamped or printed on the data plate always outranks a serial decode.
Bosch Serial Number Formats
| Format | Era | Example | Confidence |
|---|---|---|---|
| 22 digits ignoring dashes (grouped 4-3-5-10); the 3-digit group at positions 5-7 starts with the last digit of the year (decade not encoded) | 2010 to present | 2940-455-00015-7735003001 = a year ending in 4 (2014 for an IDS-era unit) | low |
Some older or conflicting Bosch formats are recognized but deliberately not decoded; the decoder explains why when it sees one instead of guessing.
Worked Example: Bosch 2940-455-00015-7735003001
Expected decode: a year ending in 4 (2014 for an IDS-era unit). Character by character:
4 (first digit of the 455 date group at positions 5-7) = last digit of the year: 2024 shown. The remaining two digits are a week or month batch code whose split is not documented.
If this unit was made before 2010 this reading does not apply; pre-2010 Bosch serials are not decodable. Prefer the FD or production date printed on the plate when present.
4 (first digit of the 455 date group at positions 5-7) = last digit of the year: 2014 shown. The remaining two digits are a week or month batch code whose split is not documented.
More than one reading passes the validity checks for this serial, so all of them are shown, ranked, instead of a single guess.
Bosch Refrigerant Timeline
| Manufacture year | Typical refrigerant | Notes |
|---|---|---|
| through 2024 | R-410A | The Bosch IDS heat pump family launched on R-410A (2017-2024); Climate 5000 mini splits likewise. |
| 2025 and later | R-454B | The full IDS family (Light/Plus/Premium/Ultra) and Climate 5000 relaunched on R-454B for 2025. |
The refrigerant printed on the nameplate is authoritative; this timeline tells you what is typical for the age, not what is in a specific unit.
Bosch Warranty Baseline
Registered within 60 days (owner-occupied residential): 10-year parts and compressor; unregistered reverts to 5-year.
Source: bosch-homecomfort.com warranty pages. Decode the manufacture date above, then confirm coverage through the manufacturer's own serial-number warranty lookup.
Frequently Asked Questions
How old is my Bosch unit?
Decode the serial number from the data plate. The dominant Bosch format (2010 to present) is: 22 digits ignoring dashes (grouped 4-3-5-10); the 3-digit group at positions 5-7 starts with the last digit of the year (decade not encoded). Example: 2940-455-00015-7735003001 decodes to a year ending in 4 (2014 for an IDS-era unit). Subtract the decoded year from the current year for the age. Units past 15 years are replacement candidates, and past 20 a major repair rarely pays off.
Why can a Bosch serial number decode to more than one date?
The main Bosch rule carries low confidence, so treat the result as an estimate to check against the data plate. If this unit was made before 2010 this reading does not apply; pre-2010 Bosch serials are not decodable. Prefer the FD or production date printed on the plate when present.
What refrigerant does a Bosch unit use?
By manufacture year: through 2024: R-410A; 2025 and later: R-454B. The refrigerant printed on the nameplate is authoritative; the year-based mapping tells you what is typical for the age, not what is in a specific unit.
Is my Bosch unit still under warranty?
Registered within 60 days (owner-occupied residential): 10-year parts and compressor; unregistered reverts to 5-year. Decode the manufacture date above, then confirm coverage by running the full serial through the manufacturer's own warranty lookup. Terms shown are the current policy; older units often carried different terms.
Why do some Bosch serial numbers refuse to decode?
Bosch plates usually carry an FD number or printed production date; prefer that over the serial decode. All-numeric Bosch serials of this length are pre-2010 or otherwise undocumented styles that do not encode a decodable date. Use the FD number or production date printed on the plate.
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