Recently we have been getting calls from techs about NIMS installations. One caller recently said he had an infinity system with an “infinity” water source heat pump with a no

With technology advancing more and more every day, the days of relays to contactor style control are behind us. Carrier units with MBB boards have sensors everywhere from the suction

The most current 24 and 26 SEER Carrier GREENSPEED and Bryant EXTREME offer a few upgrades from the original versions. Now, they have a capacity range from 25% to 100%

On 30RA to 30RB, this code can be a massive headache.  With all the different options for these chillers can come with this alarm can send you down many different

You may have seen Code 69 while receiving a service call to a 25VNA8-24VNA9 2 thru 5 ton. Many times we get a call from a tech stating “I think

What is superheat? What is sub-cooling? In this article we will review what refrigeration is, how it works, and some of the terminology. Hopefully, it will help you troubleshoot problems