Category Archives: Refrigeration

Copper Versus Aluminum Coils – Condensers and Evaporators

Copper Versus Aluminum Coils – Condensers and Evaporators - Some manufacturers are starting to transition from copper coils to aluminum coils for both condensers and evaporator coils for various reasons. When making a decision to purchase a new system you need to inform yourself about the pros and cons of purchasing a system with aluminum coils or copper coils. […]

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Compressor Overheating Troubleshooting – Diagnosis and Repair

Compressor Overheating Troubleshooting - There are some problems with an air conditioner or heat pump system that can be avoided with proper maintenance. Other problems result in a mechanical or electrical problem with the systems that needs to be resolved. Compressor overheating is a serious issue that can cause serious problems with your air conditioner or […]

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Evaporator Coils Dirty and Ice On Air Conditioner

Evaporator Coils Dirty and Ice On Air Conditioner - It was a very hot day and I got a ticket to respond to a call for no cooling. The customer said there was ice on the air conditioner. The secretary instructed the customer to turn the AC off so the ice could thaw before I got […]

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Refrigeration Piping Design & Installation Practices

Refrigeration Piping Design - Installing a new air conditioning and heating system requires skill and knowledge of proper procedures in electrical wiring, controls wiring, and pipe work. On commercial projects a skilled electrician handles the electrical hook ups, a controls technician handles the control wiring, and a pipe fitter handles the pipe work including the refrigeration […]

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Two-Stage Scroll Compressors | Refrigeration & Cooling

Two-Stage Scroll Compressors For many years HVAC manufacturers used two compressors in their higher efficiency equipment to stage the air conditioner or heat pump for added efficiency. They would use a small compressor for the lighter loads or demands and then when the air conditioner or heat pump needed more demand the small compressor would […]

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