Design, installation, maintenance and troubleshooting of commercial cold rooms.
When a cold room drifts off its set point, the instinct in most kitchens, butcheries and distribution depots is to call a technician and expect […]
Undersizing and oversizing a cold room condensing unit are both expensive mistakes, and both come from the same root cause: skipping a proper heat load […]
R-32 is replacing R-410A across much of the split and light commercial market, and the good news for a working technician is that the diagnostic […]
A hunting TXV oscillates the evaporator between overfeeding and starving instead of settling on a stable superheat, and the fix depends entirely on which of […]
Low superheat paired with high subcooling is the readback of a system carrying more refrigerant than it needs, and it is more dangerous to ignore […]
High superheat with low subcooling is the quadrant technicians get wrong most often, because the instinctive response — add gas — is correct for one […]