Copper Versus Aluminum Coils – Condensers and Evaporators

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What you will learn with the Copper Versus Aluminum Coils - Condensers and Evaporators article:

  1. The transition from copper to aluminum for HVAC manufacturers.
  2. the pros and cons of copper versus aluminum for HVAC equipment.
  3. trying something new or keeping the status quo?
  4. a video debunking the “aluminum is difficult to repair” myth.
  5. Plenty of resources and in-depth related links to help you learn

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Condenser Fan Motor Repair | Air Conditioners & Heat Pumps

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What you will learn from the Condenser Fan Motor Repair article:

  1. Specific description of a motors job along with some technical details
  2. Air Conditioner & heat pump fan motor operation
  3. Fan motor troubleshooting basics
  4. Condensing unit fan motor repair warning and disclaimer - Turn the power off before working on the fan
  5. Replacing or repairing the motor
  6. Why you should replace the capacitor when you replace the motor
  7. Conclusion along with lots of resource and related links so you can take a closer look and learn more.

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Old Leaking Condenser Coils

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Old Leaking Condenser Coils

Old coil with HVAC Refrigerant Leaks

Old Leaking Condenser Coils

Old Leaking Condenser Coils (also referred to as freon leaks) can cause serious issues with HVAC heat pump equipment. HVAC refrigeration circuits are designed and built to hold the refrigerant. It is a sealed hermetic system. The HVAC refrigeration circuit should never need refrigerant. An HVAC refrigeration system does not burn refrigerant. The refrigerant is used over and over again to move heat from one place to another. Aside from a leak, once the refrigeration system is properly charged, the system should never need refrigerant for the life of the equipment. (more…)

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Ammonia Chilled Water System | Commercial HVAC

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Ammonia Chilled Water SystemAmmonia Chilled Water System | Commercial HVAC

This chilled water unit is a new ammonia chiller. This unit is also unique in that it has no compressor. Instead it uses the chemical properties of ammonia and heat from natural gas to condense the refrigerant which is ammonia. A chiller provides chilled water to a chilled water loop. Cold water is circulated through a loop where it is direct into a coil in an air handler. Air is blown across a coil where a heat exchange process takes place. The air handler discharges cool conditioned air throughout a duct system. Chilled water systems are typically used in commercial air conditioning applicationsbut there are some chilled water systems in residential applications. (more…)

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Frozen Air Conditioner HVAC Troubleshooting

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What you will learn from Frozen Air Conditioner article:

  1. the major two reasons why your air conditioner has ice on it somewhere (otherwise you likely wouldn’t be here)
  2. the difference between a heat pump and an air conditioner in winter and summer operation
  3. why airflow is essential to a central air conditioning system
  4. enough about HVAC refrigeration to help you determine the problem of a frozen air conditioner.

We have many other related articles. Use the search feature to the right to help you find other related articles. (more…)

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How Hydronics Works | HVAC Technical for Consumers

How Hydronics Works | HVAC Technical for Consumers

How Hydronics Works - Hydronics refers to using water and for chilled water, steam boilers and hot water boilers and other methods of transferring heat using water. A boiler or chiller is used to heat or cool the water and then the water is transferred through the hydronic piping loops to heat exchangers such as coils or baseboards where heat is transferred from the water to the air for heating and from the air to the water for cooling to provide comfort for people or a process. Hydronics is very popular in commercial and industrial HVAC applications for heating and cooling occupants in large buildings and providing heating and cooling for for equipment and machines including computers and servers. Basically in a nutshell hydronics uses water to move heat from one place to another.

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Condenser Coil Repair | HVAC Refrigeration

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New Condenser Coil Repair - HVAC Crane LiftCondenser Coil Repair

A crane is used here to lift a new condenser coil to a roof top. The old condenser coil was leaking and could no longer be repaired. The process involved recovering all the refrigerant from the Trane roof top unit. The roof top 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 Tech’s make the jobs go smoothly and make the replacement seem easy especially to the customer. (more…)

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