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 …
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.
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-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 …
A Simple Guide to the Refrigeration Cycle and How Air …
WEBSep 15, 2020 · The Four Core Components. Four core components (the compressor, the condenser, expansion valve, and the evaporator) work together to control when/where refrigerant is absorbing heat, and when/where it is releasing heat. The Compressor. Imagine a massive pipe filled with rushing steam. The steam enters into a machine, …
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 ...
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 ...
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 …
How Inverter Technology Revolutionized HVAC Systems
WEBMar 23, 2023 · How It Works. Inverter technology, also known as a variable-frequency drive (VFD) or a variable-speed drive (VSD), modulates the compressor, thus controlling the output of the HVAC system. “Simply stated, inverter technology adjusts the speed of the compressor motor to specifically meet the load demands over a wide range of operating ...
EPA Proposes Ban on R-410A Starting in 2025 - ACHR News
WEBDec 13, 2022 · R-410A BAN: In EPA’s proposed rule, the use of R-410A in new air conditioners and heat pumps would not be allowed, starting January 1, 2025. (Staff photo) December 13, 2022. Recently, the Environmental Protection Agency (EPA) released a proposed rulemaking detailing how it plans to ban the use of many HFCs in new air …