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How to Avoid a VRF Refrigerant Nightmare

If you haven’t designed a VRF system yet, you need to be aware of what code violations can get you into the most trouble. Check out this article to...... Read More

How to Avoid a VRF Zoning Nightmare

One of the biggest benefits of VRF is the built-in zoning that is available. But if you don’t design the system properly you can run into major problems. Check...... Read More

The 35% Rebate that no one is talking about

In case you missed it, effective January 1, 2018, via the Tax Cuts and Jobs Act Section 179, all components of an HVAC system can be expensed immediately instead of...... Read More

HVAC swimming pool design

Did you know that the HVAC equipment for indoor pool applications should not be installed directly above the swimming pool area? Warm moist air, which might contain airborne chemicals like...... Read More

How do you select and design a custom coil replacement?

Here is a step-by-step process for replacing a custom coil and A) Making sure it fits and B) Making sure it works.Step #1: Gather the physical coil dimensions (more info...... Read More

Can you mix R-410a and R-22 equipment?

“Can you install an R-410a condensing unit matched with an R-22 evaporator coil?”We get asked this question often, so we thought it would be helpful to write a post about...... 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

How many tons of air conditioning is this DX or Chilled Water coil?

If you are measuring a Direct Expansion (DX) or Chilled Water coil in the field, or just quoting a replacement coil, you can quickly estimate its nominal tonnage based...... Read More

How much system water per ton of cooling for process chillers?

Did you know that York recommends a MINIMUM of 6 gallons of system water per ton of cooling for process chillers? This is double the amount of water that...... Read More

What’s in a slogan

“Melts in your mouth, not in your hand”“The few, the proud, the Marines”“What happens in Vegas, stays in Vegas”These are just a few memorable slogans that we all know....... Read More

How to avoid or fix a humidity problem

One of the problems that we run into during the summer months is “Our space humidity is too high”.Or, “We would like to design our space temperature and humidity...... 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

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