We also use third-party cookies that help us analyze and understand how you use this website. Go outside to the condensing unit and look for a data plaque mounted to the side. This category only includes cookies that ensures basic functionalities and security features of the website. This guide is intended to assist Commercial/Residential Building Inspectors, HVAC professionals, Facilities Managers, HOA’s, etc., in determining the date of manufacture and/or age of HVAC equipment to determine the expected useful life (EUL). Older Carrier equipment used a different format with their serial numbers. Please consider a donation.Note – YOUR browser must be configured to accept and store Cookies for the Do Not Show Again option to work. Just like the nominal size of lumber or an air conditioning filter, the exact cooling capacity may be a little more or less than the nominal rating, but it’s close. These links will lead to you purchase a product from another company. an air handler that has a capacity for 1200 CFMs is a 3 ton unit.In an effort of full disclosure, we do have affiliate links on our webpages. © McGarry and Madsen This web site should not be relied upon for commercial use or interpretations. Description: Ten (10) character Serial number begins with four (4) numerical digits followed by one (1) letter and ends with five (5) numerical digits. 24ABR3 air conditioner pdf manual download. It is mandatory to procure user consent prior to running these cookies on your website.This website uses cookies to improve your experience while you navigate through the website. Because the “8” may be for 1968,1978, or 1988, you want to look at the ANSI certification year, or year of construction of the home, for guidance. Age: Through the 1960s Carrier used the first digit of the serial number to indicate the year of manufacture. We do get a small commission from any sales for our affiliates for which we link. In the case of 13 it probably designates the lowest SEER in the group. A ton of air conditioning equals 12,000 BTU, and 48 divided by 12 equals 4, so the data plate below indicates the system is 4 tons.
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