Chad Fabry Posted May 22, 2016 Report Share Posted May 22, 2016 I have a Mitsubishi Split heat pump set up. Photo of label attached. The charts I have say that it's digits two through five yyww. so the serial number 3002598 would be the 25th week of 2000. The unit looks five years old, not 16 years old. Anyone heard of any other methods? Click to Enlarge 40.82 KB I haven't seen this style direct vent before. I'm curious who made it? Click to Enlarge 82.02 KB Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted May 22, 2016 Report Share Posted May 22, 2016 3002598T - The first digit is the year. That unit was manufactured in 2003 or 2013. The remaining numbers are the serial #. T = manufactured in Thailand. Quote Link to comment Share on other sites More sharing options...
Marc Posted May 23, 2016 Report Share Posted May 23, 2016 Looks like Mitsubishi first started using R-410A in 2006. R-410A in Mitsubishi minisplits Marc Quote Link to comment Share on other sites More sharing options...
Tom Corrigan Posted May 23, 2016 Report Share Posted May 23, 2016 And the vent in the second picture if from an older rinnai space heater. Tom Corrigan Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted May 23, 2016 Report Share Posted May 23, 2016 Call them. You have to call to get the interior unit age any way. Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted May 23, 2016 Author Report Share Posted May 23, 2016 Thanks guys. Nice to hear from you, Tom Corrigan. Quote Link to comment Share on other sites More sharing options...
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