by High Performance HVAC | Refrigeration |
The compressor in an HVAC refrigeration system
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 liquid. It is an essential component of the refrigeration system.
The compressor provides compression which is an integral part of the refrigeration process. The old compressor was condemned for electrical burnout. The windings in the old one burned up and caused the circuit breaker to trip. (more…)
by High Performance HVAC | Commercial HVAC |
Variable Air Volume Box with Hot Water Reheat – The variable air volume box or VAV box is a commercial solution to adding multiple zones to large buildings. VAV boxes offer zoning solutions so that separate zoning demands or temperature selections can be maintained in different areas of the building.
If the president of the company wants the temperature in their office to be 70 degrees Fahrenheit but the vice president wants their office to be 74 degrees Fahrenheit then it is possible with the VAV zoning system as long as their VAV boxes are on different zones. (more…)
by High Performance HVAC | Buyers Advice |
Finding a good HVAC Company – Finding a good, honest, and reliable HVAC contractor or service company that will take care of all your HVAC needs doesn’t have to be a challenge. There are plenty of good-quality heating and cooling companies out there competing for your business.
If you apply common sense and do a little footwork you will find a good heating and cooling contractor. One who can provide excellent HVAC installation and service for many years to come. Here are some common sense things to use and consider when seeking out a good HVAC contractor or service company.
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by High Performance HVAC | Technical Reference |
Ohms Law and HVAC - Ohms Law is used by HVAC Technicians, electricians, electronics technicians, engineers, and others who deal with electrical circuits every day. It is a necessary fundamental that anyone dealing with electricity or electronics should learn. Ohms law is used in many different applications to solve problems (troubleshooting electrical problems), for sizing wire and designing circuits, and for designing printed circuit boards (PCBs). Ohms law is a basic fundamental formula that helps electrical specialist solves problems. Ohms Law is necessary to learn if you are going to be an above-average technician in HVAC.
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by High Performance HVAC | Technical Reference |
Air Conditioning and Heating Sizing - It is not uncommon for HVAC estimators or HVAC contractors to use various rudimentary techniques, which are generally referred to as rules of thumb. Some will say on the low end you need 1 ton of cooling for every 500 square feet.
On the high end, you will need 1 ton of cooling for every 700 square feet. These rules of thumb will also generally take into account a basic heat gain calculation for the kitchen and the number of people who will occupy the structure. (more…)
by High Performance HVAC | Commercial HVAC |
Glycol is like antifreeze and is used in chilled water piping loops to prevent freezing. Everyone knows when the pipes freeze they also break and start leaking. Having antifreeze in a chilled water loop is important to prevent freezing. (more…)
by High Performance HVAC | Direct Digital Controls |
Air Handler Equipment DDC Controllers – These controllers will control an air handler once the wiring is completed. The panel is freshly mounted and waiting for the technician to run the piping and pull the wire from the control points. Other points, such as outside air, temperature sensors in piping or ductwork, flow meters, actuators, or other control points can be terminated to these controllers and the data collected from those input points can be networked over the entire building automation system through the communication trunks. (more…)
by High Performance HVAC | Heat Pumps |
Heat Pump being repaired
Heat Pump Troubleshooting Advice. When you have a problem with your heat pump, you want to check the basics. Anything beyond that, you need to call in a professional to troubleshoot the heat pump. The heat pump or any electrical-mechanical equipment you have problems with and need to troubleshoot. Whether you call for heat pump troubleshooting or any other repair there is only so much you can do. We’ll discuss common problems and give you the best advice. (more…)
by High Performance HVAC | Air Filters |
Furnace Air Filter Maintenance - We all know that fresh clean air is important to our health. 
We should also know that our home air filters need to be kept clean. Kept clean not only for our health but also to protect the air conditioning and heating equipment. A dirty (or worse, no filter at all) air filter can cause our heating and air conditioning equipment to fail. By maintaining a good air filter maintenance schedule we protect our health and the heating and cooling equipment. (more…)
by High Performance HVAC | Gas Furnaces |
Two-Stage Gas Furnaces are ever-increasing in popularity among HVAC manufactures of gas furnaces. The product lines are ever-increasing from single-stage gas furnaces to a two-stage gas furnace. The reasoning is that the two-stage gas furnaces are more efficient than the single-stage furnaces.
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