This article outlines the considerations involved to properly select, apply, and control fans. Emphasis is placed upon matching the fan equipment to the requirements of the system from several different perspectives.

It’s a common misconception that the cooling blower speed on a residential air conditioning system should always be set to “high.” In many cases high speed for cooling will not give you the best possible performance and customer comfort.

How to overcome hard water and changing heating standards to revamp a complex's heating system and fight off harsh New Jersey winters, with improved reliability and efficiency.

To fully understand how to install a high-velocity HVAC system, one must know what it is and what it does. This article provides some background and the key steps to a successful installation.

For small valves up to and including 8 inches, the recommended direction of refrigerant flow is from under the seat. In this installation, the stem torque required to close the valve under system pressure is generally manageable. For larger valves, this same flow direction can create a problem.

Many HVAC service contractors are still performing their inspection and service activities and daily tasks using manual, paper-based forms. However, by supplying simple-to-use automation tools to your staff, management can increase productivity, improve the use of resources, and improve profitability.

A Virginia contractor involved in new residential construction has developed a Web site for its builder partners to enable homebuyers to see a standard HVAC system along with upgrade options. This site is now available to other contractors and builders.

Oil-flooded screw compressors use oil for lubrication, sealing rotating components, and absorbing heat. How do you choose the best oil cooler for your application? Become acquainted with the design, components, and benefits of various systems on the market.

New technology allows more precise manufacture of grease, improving performance characteristics for consistent lubrication of motor bearings and other components.

During the energy crisis of the early 1970s, heat pump systems became popular for many commercial and residential hvac applications because of their lower first cost and potentially energy-saving performance.