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DX (evaporator) Coils

What Does “Splitting” DX (Evaporator) Coils Mean

by Dan Jacobs, October 29, 2024

***Now Offering R-454B Refrigerant for All DX Coils “Splitting” DX (Evaporator) coils is one of the toughest concepts to understand…
Steam coils

Steam Distributing Coils (Non-Freeze)

by Dan Jacobs, October 1, 2024

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.
Steam Coils

How Should Steam Coils Be Designed??

by Dan Jacobs, September 23, 2024

Steam Coils require a real expertise to design & build. We at Capital Coil have a long history in solving coil problems and building steam coils so that they work correctly the first time.
Steam Coils

Frozen Steam Coils: How Do You Prevent This?

by Dan Jacobs, September 9, 2024

Freezes generally happen in older systems, however if your new system is not maintained properly or correctly installed, your steam coil can and will freeze.
Chilled Water Coil

Cooling Coils & Moisture Carryover

by Dan Jacobs, August 13, 2024

Many people do not think that moisture carryover is a problem…until you have moisture running down ductwork or spewing all over the inside of an air handler.
Chilled water coils

What Is Meant By A “Bank” Of Chilled Water Coils

by Dan Jacobs, July 22, 2022

For those that work with HVAC installations on a regular basis, you have run across the problem of needing to install new chilled water coils in very tight, confined areas. To avoid these issues, simply break down the single, larger coil into smaller coils. When piped together, those smaller coils are stacked into “banks” of coils in the system. If installed correctly, this “bank” should have the same performance as the larger, single coil.
Fan Coil

TOP 10 FAN COIL FAQ’S

by Dan Jacobs, July 1, 2024

1. A fan coil is among the easiest units to understand in the HVAC industry.  Basically, there is a small…
Steam Coils

Tips on Hand Designation & “Counter-flow”

by Dan Jacobs, June 1, 2024

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? 
condenser coils

Condenser Coils Failing? Here’s probably why….

by Dan Jacobs, May 14, 2024

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. 
Chilled Water Coils

Coils and Counter-flow: 5 Common Questions

by Dan Jacobs, May 7, 2024

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.

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