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by Jim Davis
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...
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...
by National Comfort Institute, Inc.
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...
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...
by National Comfort Institute, Inc.
Jim Altman, President of Four Seasons Air Conditioning and Heating in Kingsville, Texas, September’s NCI Contractor of the Month.
by National Comfort Institute, Inc.
Dan Foley, President of Foley Mechanical, NCI Performance-Based contractor of the month.
by National Comfort Institute, Inc.
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,...
by National Comfort Institute, Inc.
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...
by National Comfort Institute, Inc.
From time to time you may question whether your flow hood is reading accurately. Most of the time, when you're using a quality hood like the TSI 8371, you'll find that even though you might be getting a questionable reading, the problem is not the hood, but the outlet...
by National Comfort Institute, Inc.
There's a time-tested method for suspending flexible ducting that's been gaining popularity around the country recently. It's quick, cheap and extremely effective. To multiply the effectiveness of your flex duct suspension, simply take a moment to slip a 12"x 12"...
