Service & Maintenance

Btu Buddy 123: Devastated 20-Ton Condensing Unit - Part 2

June 24, 2013
Bob and Tim were driving to the job they left yesterday and talking over what needs to be done today, when Tim asked, “How are we going to move the condensing unit we disconnected to the new location so we can connect it to the system where we disconnected the defective condensing unit? You said you had a plan.”


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HVACR Tips: Ladder Safety

Set Your Ladder at the Proper Angle, Make Sure It Is Secure
June 10, 2013
Don‘t brush off ladder safety rules because you‘ve used ladders all your life. You may learn a thing or two.


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Btu Buddy 122: Devastated 20-Ton Condensing Unit - Part 1

May 20, 2013
Bob and Tim were on their way to a no cooling call at a commercial building location. This is a large manufacturing plant that has a number of installations. They arrive and talk to the maintenance man and he tells them which unit it is and goes with them to the area that the unit serves. It is a large room served by a 20-ton split system.


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Troubleshooting Challenge: A Split System That’s Still Sitting Dead

May 6, 2013
In this month’s troubleshooting problem we have a homeowner who has attempted to repair his own equipment, and he has replaced two components. The original symptom of the split system sitting dead still exists.


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Btu Buddy 121: Heat Pump No Heat Call - Part 2

April 22, 2013
Bob and Tim had left this residence a few days ago when they discovered that the four-way valve on the home’s heat pump was stuck in the cooling mode. They tried several things to get the valve to do its normal changeover to the heating mode and couldn’t get it to function. The valve would need to be replaced.


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Fifteen Essentials of a Residential HVAC Tune-Up

April 8, 2013
It’s well recognized that your car or truck needs regular maintenance. HVAC contractors and technicians likewise emphasize to their residential customers that their HVAC system needs a regular tune-up to keep the unit up and running and provide optimum performance. Here are 15 essentials of a residential HVAC tune-up.


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Btu Buddy 120: Heat Pump No Heat Call - Part 1

March 18, 2013
Bob and Tim were on their way to a service contract routine procedure when the dispatcher called and asked them to go to a residence that had no heat and had a very sick family member. They needed heat as quickly as possible.


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Troubleshooting Challenge: A Modular A/C Unit That’s Not Cooling

March 4, 2013
In this month’s troubleshooting situation, we’re taking you to a school, but not to the equipment room of the main building. Instead, it’s a modular classroom (similar to a double-wide manufactured home) that is brand new, and employs a heating/cooling unit that mounts on one end of the building. 


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Btu Buddy 119: Low Heat and a Hot Furnace

February 18, 2013
Bob and Tim were on their way to a “low heat” call at a residence when the dispatcher called them back and told them that the homeowner had called and explained that the furnace was hot, but the home was cold. The dispatcher had told the owner to shut the furnace off until Bob and Tim arrived. 


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Roof Mounted Fans: Quick Tips

February 4, 2013
What factors prevent fans from not performing as specified? There are numerous reasons why fans may fail to perform as specified, but first it is important to understand what defines acceptable performance.


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