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Interior Doors and Intermittent HVAC Comfort Problems

Air Conditioning, Airflow, Installations, Measurement, NCI Article Library, Testing and Balancing

Interior Doors and Intermittent HVAC Comfort Problems by David Richardson This cooling season, HVAC professionals across the country will be called upon to solve intermittent comfort problems they can't recreate. These frustrating and random problems often involve...

Installing Dampers in Finished Ceilings

Installations, NCI Article Library

There's nothing more frustrating than not being able to balance a system when it was built without balancing dampers, and the plenum and take-offs are behind a finished ceiling. Here's a little trick we use to install dampers on critical ducts in finished basement...

Insight Air, Phoenix, AZ

Duct Renovation, HVAC Sales, Management, NCI Article Library

Rick Rohrbacher is the owner of Insight Air located in Phoenix Arizona. In addition to having his second daughter two weeks ago and moving into their new home two weeks from now, it's been a very busy spring at for Rick and the rest of his company. As we spoke with...

Induced Draft & Atmospheric Common Venting Interference

Best Practices, Carbon Monoxide, Combustion Safety, NCI Article Library, Ventilation

When an Induced Draft Appliance (Furnace, Boiler, Water Heater) is "Common Vented" with an Atmospheric Appliance, venting interference can occur. This procedure is the proper method to evaluate this situation and take all precautions to verify safety. Necessary tools...

Increase Temperature Measurement Accuracy

Measurement, NCI Article Library

When measuring system or equipment temperatures, take your measurements as soon as the system stabilizes. This will allow your performance calculations to resemble (as close as possible), normal operating conditions. In order to keep the system running during testing,...
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