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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.
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...
by National Comfort Institute, Inc.
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...
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.
We've all heard our customers describe how their air conditioning system works O.K. in the morning, but doesn't deliver enough cooling in the afternoon. We send out a service tech, he services the unit and reports it's working pretty well. End of story, except our...
Five Airflow Rules You Need to Know Troubleshooting the airside of an HVAC system can be one of the most frustrating, yet rewarding challenges you'll have in this industry. Airflow is at the core of what we do -- yet it's one of the most misunderstood aspects of an...
by David Holt
Improving Your Team’s Performance through Better Processes
