Custom Coils vs Stock Coils: Why Matching Specs Matters

Retrofit vs. Drop-In Coil Replacement_ Pros, Cons, and Cost Differences

Custom Coils vs Stock Coils: Why Matching Specs Matters

When it’s time to replace a coil, the question comes up fast:
“Can’t we just use a stock coil that’s close?”

In some cases, sure. But in most commercial or institutional buildings — “close enough” just isn’t good enough.

Here’s why drop-in custom coils are the smarter, faster, and more reliable choice — especially when supplied by KCL Systems.


🛠️ What Is a Drop-In Coil?

A drop-in coil is built to match the original coil exactly:

  • Same casing size and shape
  • Same airflow direction and connection points
  • Same thermal capacity and pressure rating

That means: ✅ No pipe modifications
✅ No ductwork reconfigurations
✅ No installation headaches


⚙️ What Happens with “Almost Fits”?

Using a stock coil that’s “close” might:

  • Require re-routing piping
  • Trigger airflow imbalances
  • Lead to short cycling or control issues
  • Increase labour time — and frustration

What you save on a stock coil often gets lost in installation delays and callbacks.


📦 Why Contractors Prefer KCL Drop-In Coils

  • On-site coil measurement available
  • CAD-verified fabrication drawings
  • Coils built for chilled water, DX, steam, refrigerant, or glycol
  • Material options: copper, coated, heavy-duty
  • Delivered across Ontario — no surprises

Bottom line: The right coil is the one that fits the first time — and performs like the original (or better).

📞 Need help matching a coil?
Contact KCL for a fast quote and a flawless fit.