This article is primarily based on HVAC School’s “Drain Cleaning – More To It Than We Think,” hosted by Bryan Orr and featuring Corey Cruz and Mike Klokus. You can listen to that episode HERE. How hard could it be to clean a drain? The slime should just wash away if you flush the drain […]

John Dalton was an English chemist and physicist born in 1766. He was born into a Quaker family of tradesmen, though he and his brother became teachers early in life. His family bought a Quaker school in Kendal, where he and his brother taught around 60 students.  Dalton separated from the church as a young […]

Pump down solenoid valves are commonplace for any refrigeration technician. They are energized with the compressor still running, shutting off flow in the liquid line so that the refrigerant is pumped into the condenser and receiver. The compressor will then shut off once a low-pressure switch opens the circuit when the pressure falls below a […]