Refrigeration Category Index
[the_ad id=”12329″]
HVAC Refrigeration 101 Part 2
HVAC Refrigeration 101 Part 2 What is covered in Part 2 of "Refrigeration 101 - An Introduction to Refrigeration": Pressure as Related to Temperature Boyle's Law Charles's Law Dalton's Law The Process of Refrigeration The Refrigeration Cycle The Refrigerant Charge...
Refrigeration for HVAC 101
Refrigeration for HVAC 101 Refrigeration 101 - Refrigeration and Air Conditioning Technology is a textbook and will help you follow this material. You must understand heat and heat transfer principles and theory. That includes the fundamental physics...
Condenser Fan Motor Not Turning
Heat Pump AC Condenser Fan Motor Not Turning - Both heat pumps and air conditioners use the process of refrigeration to provide heating and cooling. One of the major components of that process is the condenser. A major component of the condenser is a condenser fan...
High Head Pressure Air Conditioner Heat Pump
What you will learn from High Head Pressure Air Conditioner Heat Pump An essential troubleshooting list of things that cause high head pressure What is high head pressure? Condenser Fan Motors Condensing Units and Condenser Coils The Line...
Heat Pump Leaking Refrigerant Question
Heat Pump Leaking Refrigerant - Is my Heat Pump Low on Refrigerant? I get this question a lot from both my customers and my site visitors. They tell me every year a technician comes out and pumps a few pounds of refrigerant into their unit and it's good again for...
Refrigerant R-410A Pressure Temperature Chart
Refrigerant R-410A Pressure Temperature Chart - This R410A PT Chart will help you when charging a system that utilizes R-410A. Furthermore, R410A is an HFC and is commonly used in residential and light commercial HVAC equipment for air conditioners and heat pump...
HVAC Triple Evacuation | Heating & Cooling Refrigeration
HVAC Triple Evacuation - There is definitely some confusion among HVAC/R technicians about the proper methods of evacuation. Evacuating before introducing the refrigerant to the refrigeration circuit. Let me be clear from the start that my methods of evacuating a...
Compressor Overheating Troubleshooting | Air Conditioner Repair
What you will learn from the Compressor Overheating Troubleshooting article: Avoiding the problem of compressor overheating how does compressor overheating affect the refrigeration system? diagnosing compressor overheating repairing the problem of compressor...
Frozen Evaporator Coils Troubleshooting Easy List
Frozen Evaporator Coils Troubleshooting - It was a very hot day and I got a ticket to respond to a call for no cooling. The customer said there was ice on the air conditioner. The heating and cooling service operator instructed the customer to turn the AC off so the...
Proper Refrigeration Piping Installation Practices
Proper Refrigeration Piping Installation Practices - Installing a new air conditioning and heating system requires skill and knowledge of proper procedures in electrical wiring, controls wiring, and pipework. On commercial projects, a skilled electrician handles the...
Two-Stage Scroll Compressors | Refrigeration & Cooling
Two-Stage Scroll Compressors Two-Stage Scroll Compressors - For many years HVAC manufacturers used two compressors in their higher efficiency equipment to stage the air conditioner or heat pump for added efficiency. They would use a small compressor for the lighter...
What is a Metering Device – Refrigeration Components
What you will learn from What is a Metering Device: We will answer the question, "What is a metering device". We will define the various types of devices and how they work. How the metering device is involved in the refrigeration cycle A...
Evaporator Coil Air Conditioners | HVAC Refrigeration
Evaporator Coil Air Conditioners - the evaporator in air conditioners is responsible for absorbing heat into the coils and the refrigerant. The evaporator in heat pumps and air conditioners is an essential component of vapor compression refrigeration. This is usually...
The Condenser in the Refrigeration Process | HVAC Heating & Cooling
The Condenser in the Refrigeration Process - The condenser coil receives the high-pressure high-temperature refrigerant vapor from the compressor and immediately begins to remove heat from the refrigerant vapor. As the refrigerant vapor makes its way through the...
The Compressor | HVAC Refrigeration
The Compressor | HVAC Refrigeration - In a typical HVAC air conditioner or heat pump, there are four major components that make the process of refrigeration work. Basically, this is how air conditioners work. And how heat pumps work. The first component in the process...
Refrigeration Pressure Switches | HVAC Systems
What you will learn from Refrigeration Pressure Switches A question from one of our readers - What are refrigeration pressure switches and how pressure switches protect the refrigeration circuit. All about high-pressure refrigeration switches All...
Variable Speed ECM Condenser Fan Motors | HVAC Refrigeration
Variable Speed ECM Condenser Fan Motors are used in condensers for the high efficient models so that the fan speed for the condenser can be modulated according to the load of the system. The ECM variable-speed fan motors are used in condensers that have a modulating...
Compressor Contactors for Air Conditioners | HVAC Electrical
Compressor Contactors for Air Conditioners and Heat Pumps - Compressor contactors are are simply heavy-duty switches that allow it to carry extra amperage that is used by the compressor while it is running. The contactor is made up of a coil and typically two contacts...
Fixing a Refrigerant Leak | Air Conditioner & Heat Pump Diagnosis & Repair
Fixing a Refrigerant Leak - You had the new air conditioner or heat pump system installed some years ago and suddenly it stopped heating or cooling properly so you call the HVAC contractor to check it out. The HVAC technician arrives and spends about thirty minutes...
Condenser Fan Motor Repair | Air Conditioners & Heat Pumps
What you will learn from the Condenser Fan Motor Repair article:1) Specific description of a motors job along with some technical details2) Air Conditioner & heat pump fan motor operation3) fan motor troubleshooting basics4) Condensing unit fan motor repair...
Compressor Rebuild | HVAC Heating and Cooling Refrigeration
Compressor Rebuild - This freshly rebuilt reciprocating compressor is destined for a large commercial chiller. Chillers chill water for air conditioning. Compressors compress refrigerant vapor and pump the compressed refrigerant to the condenser to be condensed into a...
HVAC Centrifugal Compressors | HVAC Refrigeration
HVAC Centrifugal Compressors - Centrifugal compressors are used in many applications including pipeline transport of natural gas along with many other related applications including vapor compression refrigeration. These compressors have different operating...
Rotary Compressors | Air Conditioning & Heating Systems
Rotary Compressors - The rotary compressor used in HVAC applications for air conditioning and heating systems offer some of the most efficient air conditioner and heat pump systems one can find on the market. Despite the rotary compressor being a key component of an...
Refrigerant Alarm Control for Chiller Room
This refrigerant alarm serves two chiller rooms and alerts operators and other staff that refrigerant has been released into the mechanical room. Chillers have a built-in pressure relief valve that will release the refrigerant in the event too much pressure builds up...
R-410A versus R-22 Refrigerants | HVAC Refrigeration
R-410A versus R-22 Refrigerants - R-22 is a refrigerant that has been widely used in air conditioners and heat pumps for many years. It has been deemed hazardous to the environment and it will begin phase-out by law in the year 2010. The replacement refrigerant for...
Refrigeration for HVAC | Air Conditioning and Heat Pumps
Refrigeration for HVAC - Air conditioners and heat pumps use the process of refrigeration to provide heating and cooling. What is the definition of the process of refrigeration? Refrigeration is the process of moving heat and depending on whether it is a heat pump or...
HVAC Temperature Measurement Conversion
HVAC Temperature Measurement Conversion - In air conditioning and heating applications it is necessary to accurately measure temperature to offer control of the temperatures relative to the application for which the HVACR equipment is serving. There are four separate...
Old Leaking Condenser Coils
Old Leaking Condenser Coils (also referred to as freon leaks) can cause serious issues with HVAC heat pump equipment. HVAC refrigeration circuits are designed and built to hold the refrigerant. It is a sealed hermetic system. The HVAC refrigeration circuit should...
Condensing Unit Frozen Wont Turn Off
Condensing Unit Frozen Wont Turn Off - What you can expect to learn from Condensing Unit Frozen won't Turn Off article: this article is an answer to a question taken from our email by a visitor to High Performance HVAC. We often use the questions we get in the email...
Crankcase Heaters and Compressors | HVAC Refrigeration
Crankcase Heaters and Compressors | HVAC Refrigeration. Hello, I have a question about crankcase heaters and compressors. I am aware that they keep the refrigerant from saturating in the compressor when not running. However, if the refrigerant is R-22, it becomes...
Air Conditioner Compressor Failure – Air Conditioner Repair
What you will learn from Air Conditioner Compressor Failure article: discussion about HVAC compressor failure and how it is one of the most expensive air conditioner repairs comprehensive list of reasons why HVAC compressors fail actions to take to...
Condensing Unit Too Close to House | HVAC Basics
Condensing Unit Too Close to House - This condensing unit was too close to the house to effectively reject heat. It was a bad HVAC condensing unit installation job by the HVAC installers. A mechanical inspector rejected the final permit until the condensing unit was...
AC Condensing Units | Air Conditioners & Heat Pumps
HVAC Condensing Units Condensing Units caution - Air Conditioning and Heating equipment uses high voltage. Caution is always advised when working around high voltage. When in doubt call a professional. Safety First!! What you will learn from this...
Semi-Hermetic HVAC Compressor Rebuild Shop | HVAC Refrigeration
Semi-Hermetic HVAC Compressor Rebuild Shop - These old semi-hermetic HVAC compressors are destined for the rebuild shop where they will see new life one day in a chiller or DX air conditioning system. If a business loses a compressor for whatever reason (usual...
Vapor Compression Refrigeration | Refrigeration HVAC
The process of refrigeration uses the vapor-compression refrigeration cycle to move heat from one place to another. In many HVAC air conditioner and heat pump applications, the process of refrigeration or the vapor-compression cycle is what makes it work. This...
R-134A Refrigerant Pressure Temperature Chart
R-134A Refrigerant Pressure Temperature Chart - R-134A is an inert gas also known as Tetrafluoroethane, and for air conditioner systems. Furthermore, R134A is a chemical refrigerant in automotive and domestic use air conditioners. Additionally, HVAC Systems such as...
Reciprocating Compressors | HVAC Refrigeration
HVAC reciprocating compressors were the workhorse of the HVAC industry and when someone mentioned a compressor the first thing one thought about was a reciprocating compressor. This compressor has a piston(s) that compresses vapor and in the cases of an HVAC...
Refrigerant Pump-Down Method | HVAC Refrigeration
Refrigerant Pump-Down Method - Can an HVAC Technician “Park” Refrigerant in the Condenser? What you will learn from Refrigerant Pump-Down Method article: We answer a technical question by one of our readers concerning the refrigerant pump-down method...
HVACR Refrigeration Certification Section 608
HVACR Refrigeration Certification Section 608 - In 1993, Section 608 of the Clean Air Act became law and active enforcement of these federally mandated laws became the responsibility of the Environmental Protection Agency (EPA) to enforce. The Clean Air Act as defined...
Scroll Compressors | HVAC Refrigeration
Scroll Compressors - One of the workhorses for heat pumps and air conditioners is the scroll compressor. The scroll compressor works as many other compressors do as far as the refrigeration process is concerned. The scroll compresses the refrigerant thereby raising...
HVAC Refrigeration Evacuation | Technical Refrigeration
HVAC Refrigeration Evacuation | Technical Refrigeration - Why is it necessary to evacuate a refrigeration system before charging it with refrigerant? Because all systems are designed to operate without moisture or non-condensable gas in the system. If your air...
Efficiency Factors for Condensing Units | HVAC Refrigeration
Efficiency Factors for Condensing Units - For years compressors inside the condensing unit were sized to meet the highest load demand for whatever application they were serving. Even today, many compressors, located inside the condensing unit are sized in accordance...
Condenser Coil Repair | HVAC Refrigeration
Condenser Coil Repair - A crane is used here to lift a new condenser coil to a rooftop. The old condenser coil was leaking and could no longer be repaired. The process involved recovering all the refrigerant from the Trane rooftop unit. The rooftop unit was then...
Air Conditioner Compressor Troubleshooting | Diagnosis & Repair
What you will learn in Air Conditioner Compressor Troubleshooting article: the difficulties in troubleshooting a hermetically sealed compressor differences in various compressor manufacturers and HVAC manufacturers the commonality of single-phase...
Refrigerant Pressure Temperature Chart | HVAC Refrigeration
Refrigerant Pressure Temperature Chart | HVAC Refrigeration - This page offers a temperature-pressure relationship chart for use in working with HVAC Systems that use R-410A, R-22, and R-134A. Additional refrigeration information and resources are located below the...
TXV or Thermostatic Expansion Valve | Refrigeration for HVAC
TXV or Thermostatic Expansion Valve are used in air conditioners and heat pumps to meter refrigerant. The TXV or Thermostatic Expansion Valve is preferred over other refrigeration metering devices because it only allows a specified amount of refrigerant to flow based...
HVAC Refrigerant Leaks | Air Conditioner Leaking Freon® – R410A – R22
What you will learn from HVAC Refrigerant Leaks: This article will instruct you on the top reasons and places in the HVAC system for refrigerant leaks. Some people say Freon® leaks. What happens when an air conditioner or heat pump has a low...
Superheat and Sub-Cooling Refrigeration HVAC
Superheat and Sub-cooling - In HVAC refrigeration coils and fans are used for air conditioners and heat pumps to transfer heat in one direction or another. A good HVAC technician is well versed in refrigeration. Refrigeration is defined as moving heat from one place...
[the_ad id=”12329″]
HVAC Refrigeration Category Index
HVAC Refrigeration Category Index offers a list of articles to assist in learning more about HVAC refrigeration technical information. Articles including information about the refrigeration loop and process as it pertains to HVAC along with other articles such as refrigeration piping practices and refrigeration components. We include several refrigerant pressure temperature or PT charts, brazing and soldering techniques and practices, and finding and fixing refrigerant leaks. Detailed information and a breakdown of refrigeration components are also offered along with refrigeration theory used in the filed by technicians. Some articles are designed to help the layman understand refrigeration basics and to help them solves basic issues while other articles are for technicians wanting to sharpen their skills.
Refrigeration Category Basic Index:
- HVAC Refrigeration Troubleshooting
- Refrigeration Theory
- HVAC Refrigeration Components
- Charts - Pressure Temperature Charts or PT Charts for common refrigerants
- Best Installation Methods and Practices for Piping and System Installation
- Refrigerant Leaks - Finding and Repair the Refrigerant Leaks
And many other articles to help you learn more about refrigeration.
Search for More Helpful HVAC Information
