Articles Tagged with ''service ''

Is Insurance Work Worth the Effort?

By John R. Hall
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HVAC contractors looking to add revenue streams to their business can certainly consider insurance repair work. Due to natural disasters like flooding, tornadoes, and snowstorms, there are a lot of business opportunities that fall under this category — if contractors are willing to deal with insurance companies.


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Troubleshooting Challenge: An Older Heat Pump With a Problem in Cool Night/Warm Day Weather

By Jim Johnson
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To prepare you for this month’s troubleshooting situation … you’re not the first technician to be called, nor are you the second technician. You’re the third one that’s been called in to solve this customer’s problem, which involves a heat pump that serves a residential building in a mild Southwest desert climate.


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Btu Buddy 105: Furnace Vent Problem

By Bill Johnson
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Tim and Bob have been sent on a service call to a new customer’s house. The homeowner has an unusual complaint. She said that she thinks she has a furnace problem because there is mold in her house. They don’t know what this can be all about.


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The Professor: Megohmmeters for Preventive Maintenance

By John Tomczyk
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Megohmmeters (meggers) are electrical meters used to check the resistance and condition of the motor windings and the condition of the refrigeration and oil environment around the motor windings. A megger is nothing but a giant ohmmeter that creates a very large dc voltage (usually 500 volts dc) from its internal battery.


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Btu Buddy 104: Bob and Tim Continue Heat Pump Repairs

By Bill Johnson
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Bob and Tim have arrived back at the apartment building where they have been working for several days inspecting and making necessary repairs to the building’s split-system heat pumps. Bob said, “Check the list for another unit that seemed to have a problem and let’s take a closer look at it.”


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Troubleshooting Challenge: A Gas Furnace That Won’t Fire

By Jim Johnson
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In this situation we have a customer who has called for service on their gas furnace, and the description of the problem is “no heat at all.” The customer also reports that this is the first time they’ve had to call for service on their 10-year-old unit.


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The Professor: Bad Compressor Valves

By John Tomczyk
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Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. There are three main reasons why a compressor will simultaneously have a low head pressure and a high suction pressure.


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Btu Buddy 103: Bob and Tim Begin Heat Pump Repairs

By Bill Johnson
One Comment
Bob and Tim have arrived at the apartment house that they have been working at for the last several days. They’ve gone to the roof where the outdoor units are located. There are 60 heat pumps that use R-22 as the refrigerant. They start with Unit No. 2.


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The Professor: Systematic Troubleshooting of a Restricted Liquid Line

By John Tomczyk
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The problem in this scenario is a restricted liquid line after the receiver. Where do you go from here?


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Finding Global Markets for Tools

By Peter Powell
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Tools are so important these days that when Milwaukee Electric Tool Co. held its fourth annual symposium for products used in its core markets of electrical, plumbing, remodeling, and HVAC, it attracted 50 plus trade press from seven countries.


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Rajan Rajendran, newly appointed director of the Emerson Innovation Center, talks about the new $35 million facility and how it will function on the University of Dayton campus. Posted on Aug. 29.

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