Coil Measurement Tool | Custom Replacement Coils

← Back to Resources

Get a custom coil quote.
Fast.

Measure your coil, snap a few photos, and we'll handle the rest — built to your exact specification.

📐 Measure ~8 steps, 5 min

📷 Snap Photos Tag, coil, connections

📬 Get Your Quote Quote same day

Start My Quote

~5 min · We'll follow up with pricing fast.

→

Step 1 of 9

Your Contact Info

Tell us who you are so we can follow up with your quote.

Your Name *

Please enter your name

Company Name

Phone *

Please enter a phone number

Step 2 of 9

What type of coil?

Tap the coil type that best matches yours. Check the label or connection style if unsure.

Fluid Coil
(Hot Water/Chilled Water)

Steam Distributing Coil

Standard Steam Coil

Convector Coil

Evaporator Coil

Condenser Coil

Face and Bypass Coil

Booster Coil

Please select a coil type to continue

Step 3 of 9

Job Information

Fill in what you can from the coil tag or work order.

Customer Name

Project Name

Tag / Coil IDMetal plate on the coil frame — shows model, serial, and specs. Usually on the header or casing.

Work Order #

Model #From the coil tag

Qty Needed

Make / ManufacturerBrand of the existing unit, if known

Step 4 of 9

Materials

Select the material for each component. Check the coil tag if available.

Tube Material

Tube OD — Outside DiameterMeasure the outside diameter of one tube with calipers or tape. Most common: 1/2" or 5/8".

Fin Material

Casing Material

Header Material

Coated Coil?Does the coil have a protective coating?

Yes

Unknown

Step 5 of 9

Connections

Describe the pipe connections — where fluid enters and exits the coil.

💡 Supply = where fluid enters (usually top, labeled "S"). Return = where fluid exits (usually bottom, labeled "R").

Supply Connection SizeMeasure OD of the stub — e.g. 1-1/4", 2"

Return Connection SizeMeasure OD of the stub — e.g. 1-1/4", 2"

Connection Material

Connection Type

Header ConfigurationAre supply & return on the same end of the coil, or opposite ends?

Coil HandingStand on the leaving-air side with airflow at your back — header on your LEFT = LH, header on your RIGHT = RH.

LH — Left Hand

RH — Right Hand

Step 6 of 9

Circuits / Feeds

Stand at the supply header end and count how many tubes tap into that header.

Count tubes tapping into the supply header (the connection end).

Circuits / Feeds

Tap + to count, or type directly

Alternative: Tubes High = Tubes per Row across Face

When the supply header isn't accessible, count tubes visible going up the face height at the return end. This equals the Tubes per Row across the face — each row has the same number. Relates directly to FH (face height).

Tubes High = tubes per row across the face. Count any single column top to bottom.

Tubes High (per row)

Step 7 of 9

Dimensions

All measurements in inches. Fill in what you can — the more the better.

FH / FL = fin face (inside flanges) · CH / CL / CD = casing · OAL = total with header · HD = header depth

📐 Core Dimensions

ROWS — Number of RowsRows = depth of the coil. Count tube rows from front to back in the direction of air flow — NOT top to bottom.

FPI — Fins Per InchLay a tape against the fin face and count fins within 1 inch

FH — Fin HeightTop to bottom of fin face, measured inside the casing flanges

FL — Fin LengthSide to side of fin face, measured inside the casing flanges

📦 Casing Dimensions

CH — Case HeightOutside height of casing

CL — Case LengthOutside length of casing

CD — Case DepthFront to back of casing

HD — Distance Over HeaderInside of header flange to outside edge of header

📏 Overall & Connection Dimensions

OAL — Overall LengthFull length incl. header

SL — Stub-Out LengthHow far connections stick out from header face

X — Between HeadersDistance between two headers

🔧 Connection Locations

I and O: measure from top of coil to center of each connection. S and R: horizontal distance from coil end to connection center.

I — Inside ConnectionDistance from top to supply (inside) connection center

O — Outside ConnectionDistance from top to return (outside) connection center

S — Supply LocationDistance from coil end to supply connection center

R — Return LocationDistance from coil end to return connection center

Step 8 of 9

Photos & Notes

Photos help us verify measurements and catch anything unusual. Up to 5 photos.

📸 Best shots: coil tag / nameplate, supply header end, full coil face, return header end, any damage or special features.

📷

Tap to add photos

Up to 5 photos — JPEG or PNG

Additional NotesDamage, special features, unusual details, or questions

Step 9 of 9

Review & Submit

Take a quick look before we send your measurements over.

✅ Submitting sends your measurements to Custom Replacement Coils. We'll be in touch — built to specification.

✓

Measurements Submitted!

Built to specification. Built to last.

Your coil measurements are on their way to Custom Replacement Coils. We'll review everything and be in touch with your quote shortly.

Get a custom coil quote.Fast.

Your Contact Info

What type of coil?

Job Information

Materials

Connections

Circuits / Feeds

Dimensions

Photos & Notes

Review & Submit

Measurements Submitted!

Get a custom coil quote.
Fast.