Once the realization is made that the HVAC equipment is a component of the HVAC system and not the HVAC system itself, a contractor and homeowner can start to address the real issues.
The function of an oil reservoir, commonly known as an oil trap, is to prevent large oil slugs from forming. This is accomplished by trapping a small amount of oil in the reservoir or trap and gradually returning it to the compressor.
For maximum efficiency, a bank of compressors should be connected to evaporators operating at similar temperatures. From an operational standpoint, cases of different evaporating temperatures can be connected to the rack; however, this causes a substantial energy loss.
As many residential and commercial contractors learned during the most recent recession, having a battle plan for surviving tough times is an absolute must.
In only a few years, the number of connected “smart” products for the home has increased exponentially as homeowners have shown more and more interest in being able to monitor and control their homes from nearly anywhere.
On Aug. 4, the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) and Lennox Intl. Inc. filed a petition asking the U.S. Court of Appeals for the 5th Circuit to review the U.S. Department of Energy’s (DOE) final rule establishing energy conservation standards for walk-in coolers and freezers (WICF).
If hydrofluorocarbons (HFCs) are to have long-term viability, the low-global warming potential (GWP) versions will have to separate themselves from high-GWP types. And the survivors will have to play their part in energy efficiencies, especially in commercial buildings.