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Chilled Water Coils

Guidelines For Air Velocities

by Dan Jacobs, January 14, 2021

Step # 1 in determining the size and performance of a coil is dependent upon understanding face velocities of air across the coil. Whether you use CCA’s coil selection program to help size the coil, or you are replacing an existing coil; the height, length and resulting velocity determine everything.
Commercial Coil Replacement

How Did The HVAC Commercial Coil Replacement Market Originate???

by Dan Jacobs, January 4, 2021

How in the world did the commercial coil replacement market start? This specific newsletter is more of a story than…
Steam Coils

Tips on Hand Designation & “Counter-flow”

by Dan Jacobs, December 28, 2020

Are your water coils right hand vs. left hand?  Is it looking into the face of the coil or with the air hitting you in the back of the head?  What exactly is counter-flow and why is it important?  Are you completely confused by why right hand vs. left hand even exists? 
commercial HVAC Coils

Top 5 Reasons Commercial HVAC Coils Prematurely Fail

by Dan Jacobs, December 8, 2020

Capital Coil & Air has come across virtually every scenario over the years in which a commercial HVAC coil had to be prematurely replaced, and we have since created an easy guide targeting the main reasons HVAC Coils prematurely fail.
Chilled Water Coils

Coils and Counter-flow: 5 Common Questions

by Dan Jacobs, December 2, 2020

The first thing to remember about coils and counter-flow is that chilled water coils are always built to be piped in counter-flow. This means that the air flows in the opposite direction as the water. For example, with counter-flow, the air flows through rows 1-8, while the water runs through rows 8-1. Water always travels through the coil in the opposite direction of the air; hence the term “counter-flow.”  Direct Expansion Coils (Evaporator Coils) are also piped in the same manner.
Steam Distributing Coil

Steam Distributing (Non-Freeze) Coils: The Accidental Coils

by Dan Jacobs, November 19, 2020

Were you aware that Steam Distributing coils or “Non-Freeze” steam coils were essentially discovered by accident? At the inception of the HVAC industry, steam coils were originally designed to be shorter in length because there was not a good way to evacuate condensate. In an effort to make steam coils longer in length, the concept of a steam coil containing a tube within a tube was invented.
Condenser Coil

Condenser Coils Failing? Here’s probably why….

by Dan Jacobs, October 27, 2020

Very rarely do condenser coils ever freeze so the first thing you’re going to want to know is if your coil died of corrosion, old age, or possibly vibration.  Old age is obviously preferable because with a few easy dimensions, we’ll have enough to price up your duplicate coil. 
Condenser Coils

Boca Raton Hospital Covid-19 Care Condenser Coils

by Dan Jacobs, October 13, 2020

A large HVAC contractor in South Florida recently contacted Capital Coil & Air with a request to modify an existing system of Carrier 38 Series Microchannel Coils with (4) large condenser coils on an emergency basis. The main goal was to change over from microchannel to standard copper tube/aluminum fin condenser coils.
Steam Coils

Different Types of Steam Coils?

by Dan Jacobs, October 9, 2020

There are two types of steam coils:  standard steam coil, which is used in most reheat applications, and steam distributing coils, which are used in applications where the entering air temperature is below 40 F degrees.
Heat Exchanger

Replacing a Shell and Tube Heat Exchanger? And Have the Model Number?

by Dan Jacobs, September 23, 2020

Replacing a Shell and Tube Heat Exchanger? Give us the model number and serial number to your heat exchanger and 9/10 times we can replace it!

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