The thermostatic expansion valve (TEV or TXV) is erroneously considered by some to be a mysterious and complex device. Here we discuss typical valve complaints, causes, and remedies.
This article addresses the specific uses, performance characteristics, fire safety, condensation control, and installation recommendations for fibrous glass duct wrap.
An HVAC contractor is tempted to expand beyond the heating and cooling business into the plumbing and electrical businesses. Here consultant Al Levi discusses the pros and cons of making this move.
In this installment of the Btu Buddy series, Bob finds that a customer's heat pumps are losing cooling capacity operating in mild temperatures. With Btu Buddy's help, he discovers that the units' evaporators are starved for refrigerant.
When a Website becomes an important business tool, companies must tackle the issues of uptime and performance. This article explains the various high-availability hosting solutions and what might be best for your company.
A bald head enables you to immediately sense the smallest changes in air temperature or radiant heat transfer. The combination of the two is what defines "operative temperature" and the comfort equation that drives the radiant industry.
Many building operators do not repair or replace VFDs when they fail since motors can easily keep running through a bypass contactor. Continued operation in this mode quickly becomes a very expensive way to operate a fan.
After switching to flat-rate selling, a contractor finds that his techs are struggling with having to present a price before they start the work. Consultant Al Levi discusses the steps to flat-rate success.
An often-asked question regarding professional recruiting tactics is, "Are you stealing employees?" The answer is absolutely not. If someone is happy with their employer, they won't budge.
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