Have you ever wondered how Heat Pumps work? Heat Pumps can be a very economical way of heating and cooling your dwelling. It depends on geographical location and the cost of electricity in your area. The volatile costs of natural gas, propane, and oil have enabled these conditions. Conditions where it can be cheaper with a heat pump than with fossil fuels. There is a common conception that a heat pump blows cold air.
While this can be true in some cases it is not true. If a heat pump is blowing cold air when in the heating mode then it has a problem. A problem that needs to be corrected. Even when the outside unit kicks into the defrost mode the unit should provide adequate heating.
Heating to heat the zones which it serves. Again, if it is not providing adequate heating then it needs to be looked at for a technical problem. A problem that needs correcting. A well-designed system, working properly and efficiently, can provide competitive and economical heating. (more…)
For proper Air Conditioner Troubleshooting, you need to understand some basics of air conditioners. This includes basic refrigeration, electricity, electrical components and how electro-mechanical controls work. In addition, basic air conditioner components and air conditioner sequence of operation. Before troubleshooting, you need to identify the basic problem with the system. Aside from the basics such as blown fuses or a tripped breaker we will explore other areas to look at for air conditioner troubleshooting. Tripped circuit breakers for air conditioning systems are covered here. A good preventive maintenance program done periodically can help you avoid common air conditioning problems that require troubleshooting. (more…)
Heat Pump Problems | HVAC Heating & Cooling - Heat Pumps are very popular especially in the South where air source heat pumps are mostly favored over straight air conditioners with a gas furnace for heating. With a heat pump, one system can provide heating and cooling. Some people rely on a geothermal heat pump system or a water source heat pump. A geothermal heat pump extracts heat from the ground instead of the air like an air source heat pump works. (more…)
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 chilled water systems in both commercial markets and industrial markets. You are very familiar with R134A if you are either an automotive mechanic or a chiller mechanic. R-134A uses the names Tetrafluoroethane, Genetron, or Puron, among other names depending on the manufacturer. Finally, The pressure-temperature chart represents the average pressure-temperature relationship of refrigerant R-134A.
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 - 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 by the EPA is not limited to the United States. It is applicable to all signatories (24 countries and the European Economic Countries) of the Montreal Protocol. These signatories agreed to phase out all CFCs and eventually all HCFCs. (more…)
Air Conditioning Preventive Maintenance | HVAC Spring Cleaning - Do You Benefit from Maintenance Agreements?
Air conditioning preventive maintenance is a thorough check of the air conditioning system by a professional HVAC Technician. The technician will check the following:
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 conditioner or heat pump was installed without a proper evacuation the system it will not function as designed and will likely fail prematurely. (more…)
HVAC Technician Tools - I can remember when I first got out of HVAC school a few years back I wanted to know what kind of basic tools I needed to begin my work as an HVAC technician. Of course, I had lofty goals and wanted to rise to the top but my expectations at the time matched my skill level. That skill level was a lot of book knowledge and not a lot of field experience.
After all, admittedly there are many lights that do not turn on in the classroom that does turn on in the field after some experience. Stress can turn some light bulbs on while others turn on easily after you see something for real the first time instead of reading about it in a book. (more…)
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 partially disassembled and the old coil cut out from the system taking great care and planning to ensure the new coil could be retrofitted to the old refrigeration piping system.
Good planning and skilled HVAC techs make the jobs go smoothly and make the replacement seem easy especially to the customer. (more…)
HVAC Tip - A thermocouple is commonly used in standing pilot gas furnaces and water heaters are technically referred to as a copple element and produces millivolts when heat is applied to the tip. This millivoltage is necessary to keep the pilot valve inside the gas valve open. If the pilot flame goes out, the thermocouple stops generating millivolts. Without the millivolts, the valve closes thus preventing gas from escaping when there is no flame. Thermocouples fail because of oxidation. It is recommended that you keep the pilot lit throughout the year to prevent excess oxidation. The thermocouple can be found in many different types of gas furnaces, gas logs, and gas water heaters. Learn How to Test a Thermocouple with a Multi-Meter
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There is a common conception that a heat pump blows cold air.
With a heat pump, one system can provide heating and cooling. Some people rely on a 
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 by the EPA is not limited to the United States. It is applicable to all signatories (24 countries and the European Economic Countries) of the Montreal Protocol. These signatories agreed to phase out all CFCs and eventually all HCFCs. 
Condenser Coil Repair - A crane is used here to lift a new condenser coil to a rooftop. The old 