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 chart. For more information and comprehensive articles on HVAC Refrigeration see our Refrigeration Category. (more…)
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 on demand. Any type of refrigeration metering device creates a pressure drop in the refrigerant and with a pressure drop of the refrigerant a temperature drop also occurs.
This temperature is necessary to drop the refrigerant down to temperature lower than ambient temperatures inside the structure being cooled. This allows the refrigerant to absorb the heat contained in the air passing over the evaporator coil. (more…)
Basic Heat Pump Maintenance - A good heat pump maintenance plan will include a thorough check of the refrigeration system, the electrical system, the heat pump controls, and the air filter system of the heat pump. Heat pump maintenance is as important as maintenance on your vehicle. If we fail to take good care of our vehicle then it is more prone to breakdowns whereas if we keep it in good condition with proper maintenance it is more reliable and repairs usually cost less when repairs are needed.
Of course, if you take good care of the heat pump with regular maintenance major repairs will likely never occur and it is possible you will repair free with a good maintenance plan in place for your heat pump. Basic maintenance adds life to the equipment, keeps the equipment running longer adding to the lifespan, and during the overall life will keep the heat pump more efficient.
