I am just guessing here, but I don't think that Bair is a real manufacturer. From their website, I think this is an HVAC company (contractor) or possibly a regional wholesaler who has private labeled. As a wholesaler, I have worked with a couple of large contractors in the past who I have helped them go directly to a manufacturer and have a private label created for them exclusively.
This is not necessarily a bad thing, as the equipment is probably manufactured by a reputable company, and as long as the contractor or company is backed by the manufacturer all is good. Where a problem can arise is in the future when the contractor is out of business, or a new owner takes possession of the Bair unit and needs repaired and the next contractor steps in and has no clue what this is. (though the rating plate will have the real manufacturer on it).
I once toured the Goodman Manufacturing plant in Houston TX and was blown away when I saw a huge warehouse with multiple brands. That was when i discovered that things are not always as they seem....(well, that and after I got my divorce:laughing:
Good luck. A simple way to find out is to call Bair and ask them to tell you who the manufacturer is. Then let us know :wink: