Repairing hvacr - Articles - Page 4

To Repair Or Replace Refrigeration Equipment

Contractor advice can help store owners make the right decision

December 9, 2019

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.

Start Predicting Static Pressure Changes by Applying Fan Law 2

Air balancers have been using these formulas for years

David Richardson

March 18, 2019

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

Don’t Just Walk Away From Difficult Refrigeration Repairs — Fix Them

Technicians must find solutions to challenging service problems

Joe Marchese

November 5, 2018

Technicians must find solutions to challenging service problems.

Identify All Problems Before Quoting a Refrigeration Job

A Series of Unfortunate Events

Joe Marchese

August 6, 2018

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.

Seven Telltale Signs of a System Overcharged with Refrigerant

System checks result in faster troubleshooting

John Tomczyk

August 6, 2018

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.

BTU Buddy 183: Air Cooled Chiller Maintenance

Bill Johnson

June 18, 2018

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.

Steven Janssen, lead installer at Budget Heating, Cooling & Plumbing in St. Peters, Missouri, installs a new system for a homeowner. - ACHR

Cost, Refrigerants Shape the HVAC Replacement Market

HVAC contractors discuss repair and replacement strategies

Nicole Krawcke

June 11, 2018

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

Cost, Comfort, Convenience Key to Driving Fan Coil Replacements

Full system replacement is not the only option for controlling energy costs and providing comfort

Jeffrey D. Tucker

January 22, 2018

Whether designed for a hospitality, higher education, or multifamily housing application, it is important for HVAC technology to meet current energy and comfort standards.

Diagnosing the Dilemma of Repair Versus Replace

HVAC industry experts weigh-in on the age-old debate

Nicole Krawcke

December 25, 2017

Technicans are in a unique position in the HVAC contracting world because they often act as both a serviceman and salesperson. Some companies even push for their service techs to sell, offering cash bonuses or other incentives.

The Dreaded Question

A simple ‘What brand of equipment should I buy?’ leads to a long answer

Ron Rajecki

November 10, 2017

When it comes time to replace an HVAC system, I understand that most people just want a simple answer. For one thing, a new furnace and air conditioner is a big investment. In addition, it’s not something people buy often, so not many people are familiar with the product s or the process.