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.
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 ...
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 ...
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 ...
Three Myths About HVAC Surge Protectors - ACHR News
WEBNov 16, 2022 · Myth 1: All surge protectors are created equal. While many surge protectors appear similar at first glance, there are actually a variety of factors to consider when choosing the right one for an HVAC system. Make sure to look for a surge protector that is specifically designed for HVAC systems.
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;
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.
Refrigerant Pressures, States, And Conditions | ACHR News
WEBApr 28, 2005 · Refrigerant Pressures, States, And Conditions. April 28, 2005. This is the first in a series of columns addressing advanced basics in the understanding of the refrigeration cycle. All of these columns deal with refrigerant pressures, states, and conditions as applied to a refrigeration system with a refrigerant like R-134a that is not a …
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 guide to understanding filter-drier functions and types
WEBMay 2, 2000 · This article offers acr technicians a description of the basic function of these devices and differences between the various types currently available. A filter-drier in a refrigeration or air conditioning system has two essential functions: one, to adsorb system contaminants, such as water, which can create acids, and two, to provide physical ...
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