Blog
NEW – Capital Coil Measuring App
Receive screen by screen guide on measuring HVAC coils; enter and save your coil dimensions/selections; use the app to take and save pictures of coils; save project(s) to work on later, and/or send final selections through the CCA app to our sales team to review and price
Now Offering R-454B Refrigerant for All DX Coils
In keeping with most of the OEM’s in 2024, Capital Coil is helping everyone transition from R-410A over to R-454B refrigerant in their DX Coils. Whether you are designing a new system, or retrofitting an existing one with a condensing system, Capital Coil can help in making the switch in refrigerants.
Tips on Hand Designation & “Counter-flow”
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?
Coils and Counter-flow: 5 Common Questions
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.






