ACHR News - Air Conditioning, Heating & Refrigeration News
WEBAir Conditioning, Heating & Refrigeration News is the weekly newsmagazine of the HVACR contractor covering residential and commercial contracting.
A Simple Guide to the Refrigeration Cycle and How Air …
WEBSep 15, 2020 · It takes low-pressure gas refrigerant coming into it, and turns it into high-pressure gas by the time the refrigerant leaves, increasing the chemical’s temperature as well. A refrigeration system needs to be pressurized. Take away the compressor, and the refrigerant just sits in the air conditioner without moving. The Condenser.
A Closer Look at Several Alternatives to R-22 - ACHR News
WEBJun 29, 2020 · NON-FLOODED USE: ComStar’s RS-44b can be used to replace R-22 in all non-flooded, high-, medium-, and low-temperature systems down to minus 20°F evaporating temperature. June 29, 2020. While it became illegal to produce or import virgin R-22 into the U.S. as of Jan. 1, 2020, it didn’t mean that the refrigerant suddenly …
R-454B Emerges As A Replacement For R-410A | 2020-08-02
WEBAug 2, 2020 · PRIMARY SOLUTION: Carrier recently announced that it had chosen R-454B as its primary lower-GWP solution to replace R-410A — such as the unit shown here — in all of its ducted residential and light commercial packaged solutions sold in North America. August 2, 2020. The big debate in the HVACR industry right now is which refrigerant (s ...
An HVAC Technician’s Guide to R-454B | 2021-03-16 - ACHR News
WEBMar 16, 2021 · Refrigerant regulations are changing quickly at the state and federal levels, in order to facilitate a smooth transition away from R-410A to lower-GWP refrigerants. Finding a replacement for R-410A has been challenging, but several alternatives have emerged as top contenders. One of those is the mildly flammable (A2L) refrigerant, R …
The Do’s and Don’ts of Hydronic System Glycol - ACHR News
WEBSep 24, 2020 · Since these systems are pressurized, it is not practical for the average homeowner to check the condition of the antifreeze solution.”. 2. Don’t unbalance the glycol in the system. According to Hogle, more glycol is not better — it is just more. “Since glycol is more viscous than water, the more glycol you add to your system, the less ...
An HVAC Technician’s Guide To R-32 | 2020-11-12 - ACHR News
WEBNovember 12, 2020. Change is coming once again to the HVACR industry, as there is a growing movement to transition from R-410A to lower-GWP refrigerants. California, for example, is proposing a GWP limit of 750 for all new stationary air conditioning systems (residential and commercial) in California starting Jan. 1, 2023, and other states are ...
United Technologies Completes Carrier Spinoff | 2020-04-29
WEBApril 29, 2020. Carrier's separation from United Technologies Corporation (UTC) was completed April 3, 2020, but the company and its business strategies have been long in the making. Now publicly traded under the symbol CARR, shares of Carrier have begun "regular-way" trading on the NYSE. “Against the backdrop of unprecedented global ...
Don’t Mistake Liquid Line Restriction For an Undercharge of …
WEBMar 9, 2020 · This small amount of heat to reject will cause a low condensing pressure and temperature. Most of the refrigerant will then be stored in the condenser and receiver, simulating a pumped-down refrigeration system. Symptoms of a liquid line restriction include: Low evaporator (suction) pressure; High superheats;
All You Need To Know About HVAC Capillary Tubes, Part 1
WEBDec 9, 2019 · Capillary tube metering devices are found mainly in domestic and small commercial applications that experience somewhat constant heat loads on their evaporators. These systems also have small refrigerant flow rates and usually employ fully hermetic compressors. Manufacturers use capillary tubes due to their simplicity and low …