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 ...
ACHR News - Air Conditioning, Heating & Refrigeration News
WEBTwo years after the IRA’s incentives came into play, some praise it while others criticize. Basically, it depends who you ask. According to the IRS, in 2023, the year the IRA’s enhancements to the program kicked in, more than 2.3 million individual tax returns claimed the Energy Efficient Home Improvement Credit (or 25C for its place in the tax code).
The Do’s and Don’ts of Hydronic System Glycol - ACHR News
WEBSep 24, 2020 · Antifreeze is one word that hydronic system owners should understand. For the hydronic HVAC contractor, this antifreeze is more accurately described as the heat transfer fluid necessary for the proper functioning of hydronic systems in different regions of the country. Primarily referred to as glycol, the product comes in different formats.
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.
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 ...
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 …
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-454B, which is manufactured by Chemours.
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 …
Understanding Superheat - ACHR News
WEBJun 3, 2004 · Superheat is a measured value. It is the difference between two temperatures. Superheat is measured as the difference between the actual temperature of the refrigerant vapor and the saturation temperature of the refrigerant at that same point. Superheat on the system's low side can be divided into two types: evaporator superheat and total (or ...
How to Properly Evacuate Refrigerant | 2019-02-25 | ACHR News
WEBFeb 25, 2019 · Slowly close and open the CRTs a couple of times before starting the decay test. In general, on a newly installed residential split system, you should be able to pull to a target vacuum of 300 microns or less. Then, close the CRT valves. The pressure in the system will rise slowly; this is called “vacuum decay.”.