It’s important to keep HVAC Tools Calibrated
…and not just for the “by-the-book reasons Here’s why it matters in the real world: Accurate diagnostics – Gauges, thermometers, manometers,…
Tag: Misc
Troubleshooting Codes 25-XX
Have you worked on the new 20, 21, and 23 SEER2 units and encountered a fault code 25-XX (for example,…
The Importance of Reading the Installation Manual Before Installing HVAC Equipment
Installing heating, ventilation, and air conditioning (HVAC) systems require precision, knowledge, and attention to detail. While many technicians rely on…
Diagnosing and Correcting a Heat Pump That Will Not Enter Defrost
Imagine that you receive a call from a customer stating that their heat is not working. Upon inspection you find…
Handling Refrigerant & Other Gases Safely
Refrigerants and other gases used in the HVAC industry need to be respected and handled safely. The information given here…
Understanding Active Dissipation
Along with new refrigerant for 2025, we’re also seeing new components for safety to be compatible with new Federal guidelines. …
Understanding A Model Number
Why would you need to know what the letters and numbers in the model number represent? Can knowing the information…
45 MBCA Ductless Unit and the “CP” Error Code
Most ductless products have all of the error codes listed in the installation and service manuals. Error codes listed in…
Defrosting Thermostats: Learning & Understanding Heat Pumps
We have multiple articles about the defrost boards for residential and commercial units on our website and each has addressed…
Ductless Units and Compatibility Verification
There are several different types of ductless heating and cooling systems. These systems can be combined with various indoor and…