Climate Control

HVACR Tech Tip: How to Clean Evaporator Coils for Preventive Maintenance

When it’s time to provide your customer's preventive maintenance don’t forget to pay particular attention to system components that are out of sight within the system cabinet or air handler enclosure....
On July 12, 2018

HVACR Tech Tip: Coil Cleaning Basics for the HVACR Service Technician

Cleaning air conditioner condenser and evaporator coils is a basic need for proper system maintenance. In fact, it is probably the number one performed maintenance task by air conditioning...
On July 2, 2018

HVACR Tech Tip: What Every Technician Needs to Know About Refrigeration Oils

Here is some information concerning refrigeration oils that every HVACR technician will find useful. Oil types Mineral – a by-product in the distillation of crude oil to produce gasoline. Mineral...
On June 19, 2018

HVACR Tech Tip: Maintaining Refrigerant Flow in Thermostatic Expansion Valves

Most supermarket refrigeration equipment breakdowns are repeat problems. When responding to refrigeration service calls at supermarkets, refrigeration technicians immediately play...
On June 5, 2018

HVACR Tech Tip: Prevent Destructive Superheat with TREV Liquid Injection

A large percentage of compressor failures in low-temperature vapor-compression refrigeration system applications originate from overheating. Typical compressor capacity rating data is based on...
On May 15, 2018

HVACR Tech Tip: Obtaining Oil Samples in a Refrigeration or Air Conditioning System

Monitoring the acid level in a refrigeration or air conditioning system is of the utmost importance. Contaminants such as water and air are important factors in the formation of acids in the...
On April 10, 2018

HVACR Tech Tip: A Psychrometrics Reminder for the HVACR Technician

Here is information on Psychrometrics that should help remind the HVACR technician what this subject is all about... with perhaps a few tidbits the tech may not have known! Psychrometrics: the...
On March 13, 2018

HVACR Tech Tip: Everything You Want to Know About Superheat

Superheat is the temperature of refrigerant gas above its saturated vapor (dewpoint) temperature. Superheat as it relates to thermostatic expansion valves, can be broken down into three Superheat...
On February 13, 2018

Top 5 HVACR and HVAC Climate Control Technology Blogs of 2017

In 2017, many changes impacted the HVACR, HVAC climate control industry. New technologies emerged that changed the way we do business – most for the better! But they also brought a shift in the way we...
On January 11, 2018

Top 9 Parker Blogs of 2017

2017 marked Parker Hannifin's Centennial year in business. It all started back in March of 1917, in a machine shop which built pneumatic brake systems for trucks, trains, buses and...
On January 9, 2018

Innovation Takes Center Stage in 2017 Best Mousetrap Competition

Each summer, Parker engineering and business development experts from around the world gather at the company’s headquarters in Cleveland, Ohio to showcase their group’s portfolio of innovative new...
On December 16, 2017

HVACR Tech Tip: Master Using the P-T Chart with the ChillMaster Mobile App

The HVACR service technician uses an array of tools and test instruments to diagnose problems and evaluate system performance. One tool that is readily available, inexpensive and yet rarely used to...
On November 15, 2017

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, 2017

HVACR Tech Tip: Understanding and Preventing Superheat Hunting in TEVs

A common problem facing refrigeration and air conditioning service technicians and contractors is that of superheat hunting by thermostatic expansion valves (TEVs). Here is a better understanding of a...
On July 24, 2017

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 3

This is the third part of a three-part series of posts on high-glide refrigerants for refrigeration system retrofits. Part 1 covered calculating super-heat and subcooling with glide, and control of...
On June 20, 2017

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 2

This is the second part of a three-part blog series on high-glide refrigerants for refrigeration system retrofits. Part 1 covered calculating superheat and subcooling with glide, and control...
On June 1, 2017

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 1

Refrigerant choices for refrigeration systems are undergoing significant change, including choices for retrofits and new systems. This article is Part 1 of a 3 part series addressing such retrofits,...
On May 10, 2017

HVACR Tech Tip: Basic Troubleshooting Given Three Measurements

What if you are only given 3 measurements? As HVACR technicians, you need some ideas in your back pocket for basic troubleshooting in a refrigeration system. How about a simple chart that helps you...
On April 24, 2017

HVACR Tech Tip: What You Need to Know About Flooded Head Pressure Control

Below are six questions that will help you learn most of what you need to know about flooded head pressure control.   1. Why do you need a receiver? The flooded head pressure control valve maintains...
On April 4, 2017

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