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3 Ways to Measure Airflow for Rooftops and Other HVAC Equipment

One of the most common reasons for rooftop service calls is incorrect airflow.  Low airflow will often lead to frozen evaporator coils, low pressure trips, sweating ductwork and low...... Read More

Can you use a standard rooftop for a makeup air application?

We get asked this question often. And for good reason, DOAS equipment is expensive.  If a building owner needs makeup air, in most cases a DOAS will be required....... Read More

Did you know: Hot Gas Reheat provides NO benefit on a design day?

Did you know: hot gas reheat operation (for dehumidification) provides NO benefit on a summer design day? This can be an easy mistake to make. (to clarify from the start, this is NOT...... Read More

How do you fix a humidity problem?

Humidity, the 8th wonder of the world, is a tough nut to crack. Unlike sensible heat transfer, it’s very difficult to measure its movement into buildings through cracks, doorways, and other openings.But,...... Read More

Are rooftops a commodity? Maybe.

Are rooftops a commodity?Maybe.But there is a lot to think about when replacing an existing unit, or doing a design/build job.Is quick and easy access important? Maybe we should...... Read More

EER, IEER, SEER, IPLV, HSPF… What do all of these efficiency terms REALLY mean

EER, IEER, SEER, IPLV, HSPF… You have probably seen all of these terms before and never even thought of what the heck they stand for, or why you would...... Read More

Airside economizers: Are they required on your project and are they a good investment?

Airside economizers are very simple in theory. Their function is to shut off the unit’s compressors and provide “free cooling” when the temperature outside is cold. Done, end of...... Read More

Should You be Adding a VFD on Every Packaged Rooftop Unit?

Switching to Geico may or may not save you 15% on your car insurance, BUT, adding a variable frequency drive (VFD) to your multistage equipment will do the trick!...... Read More

ARE YOU READY? Commercial Package Rooftop Unit Regulatory Changes Are Coming!

Welp! The U.S. Department of Energy (DOE) is at it again. But it should come as no surprise, right? Every few years we see higher and higher minimum efficiencies...... Read More

Customer Impressed or Not? YORK’s New Simplicity Smart Controls Get Demoed

Earlier last month, a few cfm Distributors, Inc team members helped a local mechanical contractor put on a 3-day customer appreciation event, and were asked to talk about “any...... Read More

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