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Home » Topics » HVAC Contracting » Service and Maintenance

Service and Maintenance
Service and Maintenance RSS Feed RSS

Freezing

Why Air Conditioning Systems Freeze and How to Fix Them

Understanding the basics will help your service team
Bryan Orr
January 20, 2020
Some systems we work on and install will freeze. Air conditioning is not one of them.
Read More
Static-pressure-testing

Static Pressure Test a Building to Expand Your Diagnostics

These tips will improve your offerings to customers
David Richardson
David Richardson
January 13, 2020
Let’s look at some helpful “static” pressure tests you can use on the building side of the duct system to diagnose common problems.
Read More
FROSTlines

Pay Attention To Pressure Drop in HVAC Systems

Severe pressure drop can adversely affect capacity of system
Joe Marchese
January 13, 2020
We need to be aware of the possibility of severe pressure drops creating an issue for the system and how we analyze its operation.
Read More
Troubleshooting-puzzle

Troubleshooting Puzzle: A Furnace with a Flashing Fault Code

Jim Johnson
January 6, 2020
In this troubleshooting situation we find ourselves dealing with a gas furnace, and the customer has said that “there is no heat at all.”
Read More
Water

A Guide to Common Water Heater Issues

These solutions can expand your offerings to customers
Laura-Holton
Laura Holton
December 23, 2019
Becoming familiar with the most common problems will mean you can repair water heaters quickly and easily, a skill to add to your repertoire.
Read More
Troubleshooting-puzzle

Troubleshooting Puzzle: A Walk-in Freezer That’s not Performing

Jim Johnson
December 9, 2019
In this month’s troubleshooting situation, you are responding to a restaurant manager’s call for service, and the equipment is a walk-in freezer.
Read More
Temperature-thermometer

A Guide to Air Barriers, Vapor Barriers, and Insulation

Understanding these basics will help with building issues
Bryan Orr
November 25, 2019
Trying to fix building problems with equipment can be a problem. Here are some basics to help you diagnose and solve building issues.
Read More
Troubleshooting-situation

Troubleshooting Puzzle: An Uncomfortable Bedroom

Jim Johnson
November 11, 2019
Several attempts have been made to solve the problem of one bedroom that is always too cool during the heating season.
Read More
Opinions

Letters From Our Readers: November 4, 2019

November 4, 2019
The article provided valuable information on maintenance and cleanliness issues related to refrigeration equipment in restaurants and c-stores.
Read More
Electricity

The Basics of 20 mA Control

Understanding electrical controls
Bryan Orr
October 28, 2019
Controls have gone from mechanical to electrical, so we have systems that are controlled by analog electrical signals and digital electrical systems.
Read More
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