High Performance HVAC Heating and Cooling Home

High Performance HVAC Heating and Cooling Home – Welcome to High Performance HVAC where we offer technical information regarding HVAC Systems including Air Conditioners,  Air Handlers, Boilers, Commercial Systems, Direct Digital Controls, Heat Pumps, and many other subjects regarding heating ventilation and air conditioning. We also include extra links to articles that are related to the subject matter so you can learn more about the subject. Additionally, we include several diagrams and illustrations including dynamic illustrations to help enhance your understanding and learning of HVAC. Don’t forget to see our many tips located at the footer of each page. These tips rotate for each page load.

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Lots of charts, graphics, and photos that are relevant to the articles to help you better understand the subject. High Performance HVAC wants to help you understand HVAC. Whether it is your thermostat or air conditioner or heating system we want you to stay informed so you can stay comfortable.

HVAC Buyers Guide

SEER Ratings for Air Conditioners

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Ratings and Reviews for Goodman Condensing Units

Product reviews and guides put you in the know for anything HVAC

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Thermostat Color Code Chart

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AFUE Ratings for Gas Furnaces

HVAC Buyers advice category

boilers buying

HVAC Heating & Cooling

Boiler Components Controls – HVAC Hydronics

Boiler Components Controls - All hot water boilers must have an expansion tank. Water expands when it is heated. There must be a place for it to expand so that the pressure in the boiler loop remains constant. Without a hot water boiler expansion tank, the pressures...

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...

Old Bell Gossett Circulator Pump Bearing Assembly

Old Bell Gossett Circulator Pump Bearing Assembly - This very old Bell Gossett Circulator pump and bearing assembly was found still functioning even after being flooded out several times in a basement. The pump, probably on its last leg, is at least 20 years old and...

HVAC Manufacturers Brands History

HVAC Manufacturers Brands History - the following list is a history of HVAC Manufacturers Brands and how they have changed over the years from one owner to the next. The page is a bit outdated however the information, while in need of updating, remains valid for a...

How to Troubleshoot Standing Pilot Gas Water Heater | HVAC Heating

Troubleshoot Standing Pilot Gas Water Heater - I am wondering how many people have had issues with lighting their pilot light on their water heater. I am sure it is many as I have responded to calls that turned out to simply going through the proper procedure to...

Two-Stage Furnace Air Conditioner Thermostat Control Problem

Two-Stage Furnace Air Conditioner Thermostat Control Problem | Hi I was wondering if you can help me with a two thermostat… because I don’t think my condenser is using the second stage…. I open the thermostat and see the jumpers, but is there a way you can illustrate...

Blowing Low Voltage Fuse Breaker Trip | Control Wiring Troubleshooting

Blowing Low Voltage Fuse Breaker Trip | Control Wiring Troubleshooting - I've got a 5 amp fuse that keeps popping on a circuit board. The voltage out of the transformer reads 26.3 volts. I am still popping fuses and reading over 24 volts. Can you help? Okay, I can...

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...

Amana Air Conditioner Reviews – Consumer Ratings

Amana Air Conditioner Reviews - Consumer Ratings, a technical review for buyers of Amana central air conditioners. They offer a full line of air conditioning units including a light commercial line of Amana central air conditioners. Amana air conditioners can also...

Automatic Vent Damper System | Gas Heat Flue Economizer

Automatic Vent Damper System | Gas Heat Flue Economizer. The automatic vent damper adds efficiency to water heaters and furnaces. The automatic flue damper traps heat in the furnace, boiler, or water heater. It holds heat in and around the heat exchanger instead of...

Westinghouse Air Conditioner Reviews – Consumer Ratings

Westinghouse Air Conditioner Reviews - Consumer Ratings - Westinghouse air conditioners are produced with SEER ratings from 13 SEER all the way up to 20 SEER with many air conditioners offering mid-range SEER ratings between the high and low SEER ratings. Westinghouse...

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...

Air Conditioner Maintenance | Maintaining Comfort

Air Conditioner Maintenance | Maintaining Comfort - There are many things people neglect to take care of and before they know it whatever it is they neglected fails to work. That happens with air conditioners also. Of course, being a licensed and trained technician, I...

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...

Flue Condensation Problems

This picture shows furnace flue condensation problems. This problem is caused by hot gases cooling too quickly in the flue. As the hot gasses cool, the moisture in the gases condenses and starts dripping back down the flue. Typically, there is a combustion issue or...

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...

Bryant Air Conditioners Reviews – Consumer Ratings

Bryant Air Conditioners Reviews - Bryant offers a variety of air conditioning systems that range from 13 SEER* all the way up to 21 SEER* for efficiency ranges. In Bryant's lower efficiency ranges, Bryant also offers equipment with the old refrigerant R-22 while...

Control Circuits for HVAC Systems

What you will learn from Control Circuits for HVAC Systems article: step-down transformers and their function in a control circuit. the importance of electrical ratings how to protect the step-down transformer typical relay in a control circuit....

HVAC Control DDC Programming Logic 3

DDC Programming Logic 3 - DDC control logic blocks have practically an unlimited way of arranging the blocks for HVAC control. Below is an example of a line of logic blocks arranged for static pressure control of a VAV air handler supply fan using a variable frequency...

Residential Hot Water Boiler Control | HVAC Heating

Residential Hot Water Boiler Control - The average residential/light commercial boiler typically uses different controls to sequence the boiler. Boiler control in commercial and industrial applications can be very complex and can have added layers of controls outside...

HVAC Green Technology | Heating and Cooling

HVAC Green Technology | Heating and Cooling - First of all, we need to define Green Technology before we compare it to HVAC and discuss how the HVAC industry is working to make the equipment and designs used in Green Technology, friendly to the environment. Green...

Thermostat Terminal Designations Explanations

Thermostat Terminal Designations Explanations - You are wiring a new thermostat or about to wire a new thermostat and you want to understand what the terminal designations are on your old and your new thermostat. Why is it such a mystery with these terminal...

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...

Gas Furnace Troubleshooting Techniques | HVAC Heating Repair

Gas Furnace Troubleshooting Techniques - Electronic ignition for gas furnaces is the modern way for furnaces to light the main burners. Furnace technology has evolved from the standing pilot gas ignition systems. These furnaces continue to be used today, however,...

Electric Water Heater Elements Diagnosis and Repair – No Heat

Electric Water Heater Elements Diagnosis - It is truly very frustrating when you want to take a shower and there is a problem with the hot water heating system. You want to call a plumber for the fix but there are some easy fixes you can check yourself if you are a...

Gas Furnace Number 1 Problem Flame Sensor

Gas Furnace Number 1 Problem Flame Sensor - What is the number one trouble call for gas furnaces? We went through our records and found the number one problem for a gas furnace troubleshooting call is the flame sensor. If the flame sensor is not functioning as...

How Much Refrigerant for the Air Conditioner

How Much Refrigerant for the Air Conditioner Question: What amount of Freon would it take to service a unit that services a 1200 square foot residential house if it were completely depleted? How Much Refrigerant for the Air Conditioner Answer: We get questions like...

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...

Liquid to Vapor Propane Evaporators | HVAC Heating

These evaporators serve a large complex where natural gas is unavailable. The complex needed fuel for boilers for heating and domestic hot water so these evaporators were installed too along with two very large LP tanks to handle the heating needs of the complex. As...

Programmable Thermostat Wiring Diagrams | HVAC Control

Programmable Thermostat Wiring Diagrams - Installing a programmable thermostat is not unlike installing any other thermostat for your HVAC system. The key is to get the right thermostat for your HVAC system. And to make sure it is wired properly.The subbase of a...

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Featured HVAC Articles

Featured HVAC Articles List

A few featured articles we like to share with you. Yes, there are many articles here to help you with HVAC but these are just a few editors picks for you. Notice how we have search modules all over the site to help you find things better.

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Buying New HVAC Equipment? Need Advice?

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Gas Furnace Category

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HVAC Technical Information and References

HVAC Technical Information and References Category Index

Reference lots of HVAC information on many things like the NEC and HVAC, Mechanical Code, and more!!

Heat Pump Reviews Category

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Visit the Heat Pump Reviews for more ratings on heat pumps

Air Filters Category

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Cleaner Indoor Air for a Healthier Environment. Find out how here!!

Gas Furnace Reviews Category

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Stay warm, toasty and informed when you buy a new gas furnace. Read our reviews here.

Air Conditioning Category

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Ever wonder how air conditioning works? Find out here!

Thermostats Category

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You may also be interested in visiting our Thermostats Category

Boilers Category Index

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Stay warm and comfy. Check out or Boilers category!!