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Chilled Water Coil

Coils and Counter-flow: 5 Common Questions

by Dan Jacobs, April 18, 2023

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.
HVAC Coils

Why are HVAC Coils Copper Tube and Aluminum Fin?

by Dan Jacobs, March 7, 2023

It’s really not a coincidence why HVAC coils use copper tubes and aluminum fins. Copper is great for heat transfer,…
Cooling Coils

Chilled Water Coils – Circuiting Made Easy

by Dan Jacobs, February 22, 2023

Circuiting chilled water coils is really a balancing act of tube velocity and pressure drop. In other words, think of a coil as a matrix. Each coil has a specific number of rows, and a specific number of tubes within each row.

replacement HVAC coils

Uncertain About Recent Changes with Replacement HVAC Coils?

by Dan Jacobs, January 27, 2023

Over the last 2-3 years, developments around replacement HVAC coils and their manufacturers have created more questions than they have…
Steam Coils

Frozen Steam Coils: How Do You Prevent This?

by Dan Jacobs, January 26, 2023

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.

Are Your Quick-Ships Shut Down When Needed Most???

by Dan Jacobs, December 6, 2022

Capital Coil’s primary duty as the leading OEM replacement coil manufacturer is to fill in those gaps and work with you to help alleviate any emergencies. Whether you need a coil in (3) weeks, or (5) days, Capital Coil’s Quick-ships have got you covered.
Steam Coil

How Should Steam Coils Be Designed??

by Dan Jacobs, November 3, 2022

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.
OEM Replacement Coils

OEM Replacement Coils: Repair or Replace???

by Dan Jacobs, October 11, 2022

The real reason why OEM HVAC coils need to be replaced rather than repaired is due to energy costs. If your coil is not operating near desired levels, you’ll need to increase the energy to make it work at its peak performance.

Top 10 Chilled Water Coil Facts

by Dan Jacobs, August 15, 2022

Every Chilled Water Coil selection is about balance. Your coil selection balances the rows/fins versus the cost of the coil pressure…
Replacement HVAC Coils

Why Are Fin Designs On HVAC Replacement Coils Important?

by Dan Jacobs, June 20, 2022

What is the point of understanding the importance of fins in HVAC replacement coils? While coils can be built with flat fins for various reasons, the vast majority of coils are built with enhanced fins. Enhanced fins help to ensure that the airflow is not running straight through the coil.

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