Climate Control

HVACR Tech Tip: Everything You Want to Know About 3-Way Heat Reclaim Valve Applications

Today more and more applications are utilizing “heat reclaim” as a means of providing a supplementary or even a primary heat source. Heat reclaim can significantly lower energy costs. Heat reclaim...
On November 14, 2018

HVACR Tech Tip: How to Determine Total Refrigerant System Charge When Using Head Pressure Control

The design and operation of Parker Sporlan Head Pressure Control Valves are discussed thoroughly in Bulletin 90-30. Installation and service is covered in Bulletin 90-31. This Climate Control...
On October 24, 2018

HVACR Tech Tip: Guidelines for How to Size Solenoid Valves for Split Condensers

As most of us know, sizing solenoid valves for split condensers seem to be more of an art, than a science. Many tangibles affect the calculations. This Climate Control blog will provide...
On October 10, 2018

The 10 Most Common Questions About ZoomLock® Flame-Free Refrigerant Fittings

With the introduction of ZoomLock Flame-Free Refrigerant Fittings we have come across many people in the HVACR industry that have questions about using it. So here we answer the 10 most...
On September 11, 2018

HVACR Tech Tip: How to Stop Hydraulic Hammering Noise in Heat Pump Systems

Customers have complained of hydraulic hammering noises on heat pump systems for years. Field people refer to it as the “knock-knock” noise. The complaints usually surface at the end of the heating...
On August 22, 2018

HVACR Tech Tip: How to Properly Clean a Condenser Coil

Condenser coil cleaning is one of those subjects in which there is much misdirection and misinformation being propagated by some manufacturers/distributors that has caused unfortunate confusion in the...
On July 31, 2018

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

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