NCI Article Library

High-Performance HVAC Resources

Getting a Diagnostic Test From a Service Call

Besides the valuable information the reading provides to help resolve the service call issue, it can be a prime lead-in to selling a complete system diagnostic and potential duct renovation work. To provide your customers with air conditioning systems that perform as...

Generate New Work With CO & Combustion Testing

In addition to keeping your customers safe and saving them money, CO and Combustion Testing can be a very lucrative source of revenue for your contracting company. One of the main benefits of testing is the repair work it generates. These repairs are offered by few of...

Gas Pressure Adjustments Done Right

Whether starting up new equipment or servicing existing equipment you should never assume that the recommended gas pressure of an appliance will assure safe or adequate operation. Performance cannot be determined until combustion testing has been completed. There are...

Friday Morning Training

One common trait of successful NCI contractors is that they provide some form of continuous training to technicians, salespeople and installers. One traditional time slot for this training is Friday mornings. Few manage to hold training every Friday, but those that...

Fresh Air Requirements

Since the ASHRAE IAQ Standard 62 has been in turmoil for over a decade, we've put together a few rules of thumb to consider when designing and testing fresh air in homes and buildings. Fresh air intake = Occupants in a building X 15 CFM To maintain an adequate...

Fresh Air for Ventilation and Building Pressurization

Adding fresh air to a heating or cooling system accomplishes two primary indoor air quality goals: It helps control building pressures and improves indoor air quality by diluting polluted or stale indoor air. Outside air enters the system through a roof or sidewall...

Four Seasons Air Conditioning and Heating Company, Kingsville, TX

In Kingsville, Texas it's been over 100 degrees every day since early June. It hasn't rained for over a year and unless you've been watering your front lawn constantly, your yard is now only dirt. But if your cooling contractor is Four Seasons Air Conditioning and...

Foley Mechanical – Alexandria, VA

Dan Foley is the President of Foley Mechanical serving the Washington DC Metro area. Foley Mechanical specializes in designing and installing hydronic heating systems, enhanced frequently by airside work. Dan started in the HVAC industry the Monday after he graduated...

Flush the Tech Talk

Our customers are different creatures than they were a decade ago; and they're a whole new species than what they were in the 80's. Some of us old timers remember scribbling a model number and a price on a proposal, pushing it across the table and hearing them mumble,...

Flue Restrictors-Neutral Pressure Point

Let's say you are working on a furnace, boiler or water heater, and when you take a draft reading the draft goes off scale. This is a good sign you have plenty of combustion air but the excess draft can cause poor fuel-air mixture or increased loss of energy. Using...