- Learn what types of HVAC coils are available — and which suits your building.
- Discover material, fin, and configuration options that impact performance and durability.
- Explore how KCL’s custom coil service ensures a perfect match without system redesigns.
Whether you’re maintaining an aging school, upgrading an office tower, or keeping a commercial building cool, your HVAC system relies on one key component: the coil.
But when it comes time for a replacement, off-the-shelf options don’t always cut it. That’s where custom HVAC coils come in — and if you’re in Ontario, you’ve got access to some of the most flexible, high-performance coil options available through KCL Systems.
Let’s break down your options — and what makes custom coils a smart investment for both new and retrofit projects.
When Do You Need a Custom HVAC Coil?
Not every building uses standard-issue coils. In fact, most commercial systems are either legacy installations or purpose-built for specific performance requirements. Here’s when custom is the way to go:
- Your current coil is discontinued or hard to match
- You need to fit a coil into a tight or irregular space
- You want to improve efficiency or extend coil lifespan
- The system is part of a large facility like a hospital, mall, transit station, or school
At KCL, we don’t force-fit generic solutions. We provide coils that match exactly what your system needs — in form, function, and footprint.
Types of HVAC Coils We Customize
Understanding your options starts with knowing the basics:
1. Chilled Water Coils
Used to cool air in systems connected to chillers. Ideal for commercial spaces, these are often customized for larger buildings where precise temperature control is essential.
2. Hot Water Coils
These heat air as it passes through — commonly used in hydronic heating systems in schools, offices, and institutional buildings.
3. Steam Coils
Perfect for high-output heating in older or industrial facilities. Steam coils require careful sizing and tube selection to handle pressure and condensate.
4. DX (Direct Expansion) Coils
Used with split systems or rooftop units, DX coils are matched to the refrigerant system. Custom DX coils ensure your system runs efficiently — without altering compressor specs or charge levels.
Material Options Matter
When ordering a custom coil, the material makes a big difference — especially when you’re dealing with Ontario’s variable climate or aggressive indoor environments like transit stations.
- Copper Tubes with Aluminum Fins: The standard for most systems — a great balance of cost and conductivity.
- All-Copper Coils: Excellent for corrosion resistance, especially in humid or salt-air environments.
- Epoxy-Coated Fins: Ideal for dirty or chemically aggressive environments, like mechanical rooms or industrial buildings.
KCL works with you to select the right material based on your system’s conditions and goals.
Customization Doesn’t Stop at Size
A truly custom coil goes beyond dimensions. KCL also helps you configure:
- Number of Rows: More rows = greater heat transfer, but also more resistance to airflow.
- Fin Spacing (FPI): Tighter spacing improves thermal efficiency but may require better filtration to avoid clogging.
- Connection Type & Location: We’ll match your existing pipework precisely — no re-plumbing needed.
- Casing Style & Mounting Configuration: From slide-in units to flanged mountings, we’ll recreate your original setup down to the bolt pattern.
Why Choose KCL for Custom HVAC Coils in Ontario?
Custom means precision — and that’s where we shine.
At KCL, we provide:
- On-site measurement services across Ontario
- Detailed coil matching based on original specs or site visits
- Custom fabrication through trusted manufacturers
- Fast turnaround for projects of any size or urgency
- Direct-from-the-factory pricing to keep costs competitive
We’ve built coils for schools in Ottawa, train stations in Toronto, and office buildings across the GTA — and every single one was engineered to fit and perform without retrofitting.
Let’s Build Your Perfect Coil
There’s no reason to settle for “close enough” when it comes to HVAC coils — especially when you’re running a mission-critical system in a commercial or institutional building.
KCL Custom HVAC Coils are made to fit your system exactly — saving you time, labour, and the hassle of modifying existing units.
👉 Get in touch with KCL to request a quote, schedule a site visit, or talk about your project needs.