According to National Comfort Institute (NCI) studies of properly performing HVAC systems, coil pressure drop shouldn’t exceed 40 percent of the equipment’s rated total external static pressure.

While making the decision to replace a condensing unit instead of repairing it may be a difficult one, some contractors have guidelines in place to help homeowners make such a decision a little less difficult.

Dozens of regulations affecting HVACR equipment manufacturers, along with refrigerant regulations and technological innovations in variable-speed technology, have resulted in a bevy of change for condenser unit manufacturers.

The function of coils in heating and cooling systems is to transfer heat from one medium to another, either extracting heat from a building and expelling it outside or vice versa. Depending on the application, different technologies are available to ensure thermal energy is transferred as efficiently and cost-effectively as possible.

One of the main components of any refrigeration or air conditioning system is the condenser. As its name indicates, the condenser condenses refrigerant vapor sent to it from the compressor. However, the condenser also performs other important functions, too. 

Fractional horsepower permanent split capacitor (PSC) fan motors are one of the most popular single-phase motors used in our industry, and then they fail, technicians must be able to troubleshoot and replace them.

The divisiveness of the presidential campaign on top of what was already a difficult political climate in Washington means pushing through any kind of legislation this year will be highly unlikely, though that doesn’t necessarily mean the trends aren’t moving in the right direction for ammonia and other natural refrigerants.