We hope you find the HVAC information you are seeking here on the site and if you have a question about heating, ventilation and air conditioning then please do not hesitate to use our contact form to ask us a question.
HVAC Categories and Informational Articles
Go to Air Conditioning Category
The Air Conditioning Category includes several articles on HVAC air conditioning that will help you understand air conditioning and air conditioners better. From the basics of air conditioner components to unclogging a drain we will help you here find the information you need to maintain and possibly repair your air conditioner or air conditioning system.
Go to the Air Filter Category

The Air Filter Category offers information about HVAC air filters for your air conditioner and heating system. Technical informational articles help you select the best filter for indoor air quality. Additional articles concern Electronic Air Cleaners and how they work and why it is important to have a proper air filter maintenance schedule.
Go to the Air Handlers Category
The Air Handlers Category offers information about air handler basics including blowers motors and other air handler components. The air handler category includes air handler components and troubleshooting tips so when you have problems with air handlers you can fix them. Extensive information concerning air handlers including answers to many questions we get from our site visitors.
Go to the Boilers Category
The Boiler Category includes information for both hot water and steam boilers mostly for residential systems but there are also commercial boiler articles to help building engineers and maintenance people operate and maintain their boiler systems. Learn about boiler efficiency, outside boilers, boiler piping and answer to boiler questions from our site visitors. Learn about boilers and visit the boiler category.
Go to Buyers Advice Category
The HVAC Buyers Advice Category offers information to help the HVAC equipment buyer make informed decisions about purchasing HVAC products. HVAC Buyers Guide articles compares equipment to equipment offers deep information about options you get when purchasing HVAC equipment. The HVAC Buyers Guide Category compliments our HVAC Reviews pages where you will find technical reviews along with consumer reviews and ratings of various manufacturers and equipment.
The Commercial HVAC Category
The Commercial HVAC Category offers information about commercial HVAC systems and application including basic equipment information that helps with maintenance and repair with that type of equipment listing in the articles. Lots of different articles about commercial HVAC Systems including photos and descriptions of many different types of systems that operate commercially all over the world.
Go to the Direct Digital Controls Category
The Direct Digital Controls category will help one understand the basics of building automation systems or direct digital controls. The direct digital controls category includes articles on programming, controllers, and other basic information to help one understand direct digital controls. Examples of programming including graphics and diagrams to help you learn about DDC and Building Automation Systems.
Go to the Duct Work Category

The Duct Work Category offers detailed information about duct work and the importance of maintaining your duct system and how bad duct work can be robbing you of energy dollars. Learn all about duct and find out if you need to change the duct work now or wait until you get a new air conditioning and heating system installed. Additional articles include information on ventilation for your home.
Go to the Gas Furnaces Category
The Gas Furnaces Category offers several articles on gas furnaces including gas furnace components, gas furnace troubleshooting, and basic maintenance for gas furnaces along with articles to help you understand how gas furnaces work. Everything you need to know about gas furnaces and gas heating systems that you need to know and more.
Go to the Heat Pump Category
The Heat Pump Category offers information on heat pumps including heat pump troubleshooting, heat pump components and other articles to help you understand heat pump systems. Heat pump articles also include questions from site visitors that are answered in our articles with photos, graphics and diagrams to help you understand the subject about heat pumps. Learn about different heat pump types and geothermal heat pump information.
Go to the Humidity and Humidifiers Category
The Humidity and Humidifiers Category offers basic information about humidity and humidifiers. Why is the humidity level in our homes and where we work important to our comfort and health? Find by checking out our articles in our humidity and humidifiers category.
Go to the Oil Heating Category
Check out our Oil Heating Category to learn about oil heating systems. Oil heating maintenance and additional information about oil furnace filters, oil burners, types of heating and other articles about oil furnace and oil boiler troubleshooting articles to help you learn.
Go to the Refrigeration Category
The HVAC Refrigeration Category offers information on HVAC refrigeration including HVAC compressors, compressor troubleshooting and other articles that help you understand refrigeration as it pertains to HVAC. From refrigeration articles for technicians to the DIYers who want to learn more about refrigeration and how it is used in HVAC.
Go to the Technical Reference Category
The Technical Reference Category has several articles that offers various technical references pertaining to HVAC. Lots HVAC related information from green technology to basics laws and principles used in HVAC including electrical information to help you understand motors, pumps, and basic electric circuits.
Go to the Thermostats Category
Our Thermostats Category has all the information you need to properly select a new thermostat, troubleshoot thermostats, and how to wire a new thermostat. Check out our busiest pages in the thermostat category to learn more about your thermostat or even how to install a new thermostat.
Go to the Water Heater Category

The Water Heater Categorywill help you understand how to select the right water heater for you, types of water heaters, and basic water heater information. How to save money on water heating costs and basic maintenance of your water heater to add years of life and reliability to your water heater.

High Performance HVAC also has an HVAC Reviews category so you can make a review or read reviews from other people. Many other articles include help articles for technicians, Home Inspectors, maintenance technicians, building managers and home owners who want to understand heating, ventilation and air conditioning. Once again if you have any questions please feel free to email us or post the question on our forum.
Many of our pages have related videos that match the subject matter of the article. This helps you learn more about the subject for you are interested in learning about. Here is an example of an HVAC video.

High Performance HVAC
I have a Bryant furnace model #987MA42080V17 WITH A CARRIER part #58MV660004 blower motor (ECM 3.0) I am trying to find out how many kwh this motor uses in the low , med & high speeds. Thanks for any help, Mark
Sorry, I do not know the answer to your question. The kwh will vary so wanting to know what the kwh is for the varying speeds is understandable but the speed of an ECM isn’t determined by low, medium, or high instead it modulates based on a pre-programmed set of instructions given to it by a controller. I do know that ECM motors consume 40% less electricity than the PSC motor but that depends on the speed. The closer you get to 100% of running capacity for an ECM the less that savings curve gets as the watts savings is not linear from a PSC to an ECM for running speed. A 75,000 BTUh gas furnace with an ECM will use a little less than 400 watts when running at 100% while a PSC motor in the same furnace will need a little over 500 watts while running at 100%. There are tons of variables in this and I am not sure why you want this information except to assume you making some sort of load calculation. In basic load calculations figure 120% of the maximum usage at any given time and you should be safe.