Oxbox is a Trane Technologies value brand sold through supply houses. Trane and American Standard Heating & Air Conditioning are sister brands built on the same lines with different badges. Trane Technologies also fields value lines such as RunTru, Ameristar and Oxbox.
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Oxbox units use the Trane serial scheme. Here is what each part of the serial number means, by production era:
| B | 1983 |
| D | 1984 |
| E | 1985 |
| S | 1986 |
| T | 1987 |
| C | 1988 |
| G | 1989 |
| H | 1990 |
| F | 1991 |
| K | 1992 |
| J | 1993 |
| N | 1994 |
| P | 1995 |
| R | 1996 |
| V | 1997 |
| W | 1998 |
| Y | 1999 |
| X | 2000 |
| Z | 2001 |
A Oxbox model number is usually built as [product series] · [cooling capacity in thousands of BTU] · [efficiency/SEER] · [voltage/phase] · [refrigerant/revision]. The capacity code is the most reliable part: divide it by 12 for the nominal tonnage — for example 036 = 3 tons, 048 = 4 tons. Enter your model number in the tool above to estimate the tonnage automatically.
Typical service life runs about 10–15 years for air conditioners and heat pumps and 15–20 years for furnaces. Most Oxbox parts warranties run 5–10 years and often require registration within 60–90 days of installation. Decode the age above, then confirm exact coverage on the manufacturer's portal:
Open the Trane-family warranty portal →
Trane and American Standard Heating & Air Conditioning are sister brands built on the same lines with different badges. Trane Technologies also fields value lines such as RunTru, Ameristar and Oxbox.
Brands that share the Trane serial scheme:
Read the manufacture date from the serial number on the unit's data plate. Enter the Oxbox serial number in the tool above and it decodes the year (and often the month or week) using Oxbox's published serial scheme.
On the metal data/rating plate — usually on the side of the outdoor condenser, the side of the furnace, or inside the blower door. Look for “Serial”, “S/N” or “SER”.
Most manufacturer parts warranties run 5–10 years and often require registration within 60–90 days of install. Use the age from the tool as a guide, then confirm exact coverage on Oxbox's official warranty portal (linked in the result).
The model number encodes the product series, the nominal cooling capacity (tonnage), and usually efficiency, voltage and refrigerant. Enter it above to estimate the tonnage; exact positions vary by product line.
Need a hand, a second opinion, or service on your Oxbox unit in the Ottawa area? Cardinal HVAC can help.
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