Air Conditioning & Heat Pumps

HVACR Tech Tip: Using Bi-Directional Solenoid Valves for Heat Pumps

A solenoid valve with a built-in check valve is designed to replace a liquid line solenoid valve in parallel with a check valve for reverse flow. This valve may be applied in the liquid line of...
On March 2, 2017

34 Frequently Asked Questions on the Smart Service Tool Kit.

With our recent introduction of the Smart Service Tool Kit, there have been many questions asked and answered. Let's review the ones pertaining to buying and general details here:   Q1: When will the...
On August 3, 2016

HVACR Tech Tip: Troubleshooting Solenoid Valves in Refrigeration Applications

​To ensure peak performance, solenoid valves must be selected and applied correctly; however, proper installation procedures are equally important. Aside from correct installation, troubleshooting the...
On July 19, 2016

HVACR Tech Tip: Can You Have Subcooled Refrigerant in the Receiver?

We all know that a properly charged refrigeration system utilizing a receiver must have a liquid and vapor interface in the receiver. And we also know that saturated pressure and temperature...
On July 5, 2016

HVACR Tech Tip: Where Should the TEV External Equalizer Be Installed?

In air conditioning and refrigeration applications, the ability of the thermostatic expansion valve (TEV) to match refrigerant flow to the rate at which refrigerant can be vaporized in the...
On June 21, 2016

HVACR Tech Tip: Guide to Servicing Blended Refrigerants

Parker's HVACR Tech tips cover service tips for the HVACR technician servicing commercial refrigeration systems as well as  HVAC  for both commercial and home. The following are service tips for...
On May 24, 2016

How to Use the Smart Service Tool Kit for HVACR Diagnosis

Calculating Superheat and Subcooling requires cumbersome equipment, writing down temperature and pressure readings, converting pressure readings using a PT chart, and finally subtracting totals to...
On March 16, 2015

Use of Suction Line Filter-Driers for HVAC Clean-up After Burnout

The Suction Line Filter-Drier method of cleaning up a system after a hermetic motor burnout is favored by service technicians and recommended by manufacturers throughout the HVAC and...
On August 1, 2014

Clean-up Procedure for Refrigeration and Air Conditioning Systems

Lubricant-refrigerant mixture breakdown causes sludge formation and other corrosive materials that will hinder the normal operation of compressor valves and control devices in refrigerant and...
On August 1, 2014

Climate Control Technologies and Key Markets

Climate control is the technology of controlling fluids and gases to vary temperature. Parker provides comfort, convenience and control through refrigeration and air conditioning.   Key markets Air...
On July 1, 2013