Compliance with the EPA’s 608 is a mandatory part of HVAC contracting. Techs are required to gain certification by an EPA-approved organization and pass their tests or else they are unqualified to work in the field.
How to identify and repair restrictions and damage in the liquid line
March 6, 2017
In last month’s article, “Inside Filter Driers,” which appeared on Page 18 of the Feb. 6 issue of The NEWS, we covered the internal construction, filtering, and drying materials within a refrigerant filter drier. This month, we’ll deal with troubleshooting, service, and replacement of the filter drier.
Not understanding how some electronic controls operate and control a system can lead to misdiagnosing a system problem and costly repairs. It is best never to assume, but rather take the time to do some research and find out exactly how they operate. Guessing is rarely good and generally will lead to a misdiagnosis and cause a tech to replace the wrong part or component.
OEMs, consultants, contractors, and end users respond
March 3, 2017
Danfoss, a manufacturer of high-efficiency electronic and mechanical components and controls for air-conditioning, heating, refrigeration, industrial, and water systems, recently conducted an online survey to gauge industry acceptance of CO2 refrigeration systems in North America.
As contractors become better versed on the benefits of ductless technology, they play a key role in educating homeowners as to why duct-free technology may be a better solution in terms of efficiency and design flexibility.