Articles Tagged with ''Repairing HVACR''

Both Lowe’s Companies Inc. and The Home Depot Inc. are going after professional contractors by offering special programs designed to meet the needs of people who do this work for a living.

HVAC systems in public schools are getting old and breaking down across America.

If the repair will be more than 50 percent of the cost of a new system, it is generally best to replace it. However, there may be other factors.

What if there were a quick and simple way to anticipate what would happen to static pressures if you increased or decreased airflow?

Technicians must find solutions to challenging service problems.

Here is the potential problem: A contractor quotes a customer on the compressor replacement, and he agrees to repair the cooler at the quoted price. Then, as the technician is completing the job — or even after he has finished replacing the compressor — he finds out there is another system problem.

Consider the same system as last month’s column — a medium-temperature refrigeration system incorporating a liquid high-side receiver, a TXV as the metering device, and R-134a refrigerant — but the measured and calculated values are listed in Table 2, along with this detailed system analysis.

Bob and Tim are going out to a new job. It’s an air cooled chiller on the rooftop of an office building. This is the first air cooled chiller that Tim has ever seen so Bob is going to have to describe the operation of the chiller to Tim.

So far, 2018 is shaping up to be a good year for HVAC contractors. Per Air-Conditioning, Heating, and Refrigeration Institute’s …