Non-condensable gasses such as air, hydrogen, nitrogen and hydrocarbons reduce the overall efficiency of refrigeration systems. The effects of non-condensable gasses, in a refrigeration system,...

Contractors provide service to customers with many different system applications in the field with an even wider variety of capacity requirements. Today, the number of refrigerants that a...

A refrigerant distributor is a device connected to the outlet of an expansion valve when paired with a multi-circuit evaporator. The outlet of the distributor is machined to accept tubing...

To obtain long term system life, it is important to keep contaminants to a minimum. This is particularly true of a heavy duty application such as a heat pump. Therefore, all heat pumps should have at...

Manufacturers have been successfully applying Parker Sporlan Thermostatic Expansion Valves on Heat Pump Applications for many years. Parker Sporlan's large diaphragm and durable welded element result...

2018 marked Parker's strongest year of financial performance in the company's history (view Annual Report in "Related Posts" at the end of the blog). Our focus on solving some of the world’s...

Working in the HVAC and Refrigeration industry there are many times when you are going to have applied torque when working on a particular job. In this blog, we help you understand the basics...

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...

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...

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...

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...

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...

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...

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....

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...

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...

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

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...

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...

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...