If you own or manage a warehouse, office, retail space, or light-industrial building in Wheeling or Schaumburg, your lighting is probably one of the easiest places left to cut operating costs. Many buildings along the Milwaukee Avenue and Woodfield corridors still run metal halide high-bays, T8 or T12 fluorescent troffers, and parking-lot fixtures that were installed fifteen to twenty-five years ago. An LED retrofit paired with modern controls typically cuts lighting energy 50–75%, reduces maintenance calls to almost nothing, and improves light quality for employees and customers.
This guide explains how a commercial lighting retrofit actually works, what it costs in 2026, how the controls piece has changed under the current energy code, and how to decide between retrofit kits and full fixture replacement.
Why Commercial LED Retrofits Still Make Sense in 2026
LED lighting is no longer new, which is exactly why the economics are so good now. Fixture prices have dropped, efficacy has climbed well past 130 lumens per watt for quality products, and the lifespan of a good LED fixture (50,000–100,000 hours) means you may not touch it again for a decade or more.
- Energy savings: A 400-watt metal halide high-bay (about 455 watts with ballast) is typically replaced by a 150–200 watt LED high-bay with equal or better light on the floor.
- Maintenance savings: No more lift rentals every time a lamp or ballast fails in a 28-foot warehouse ceiling.
- Instant-on: Metal halide takes minutes to restrike after a power blip. LED is instant, which also makes occupancy sensors practical in high-bay spaces.
- Lower cooling load: Less wattage means less heat dumped into the space, which trims summer air conditioning costs for offices and retail.
Retrofit Kits vs. Full Fixture Replacement
There are three common approaches, and the right one depends on the condition of your existing fixtures and how long you plan to own the building.
| Approach | What It Is | Best For | Typical Installed Cost (per fixture) |
|---|---|---|---|
| Tube replacement (Type A/B) | Swap fluorescent tubes for LED tubes; ballast-bypass (Type B) is most reliable | Tight budgets, fixtures in good shape | $40–$90 |
| Retrofit kit | New LED driver and light panel installed inside the existing troffer housing | Offices with drop ceilings, minimal disruption | $110–$220 |
| Full fixture replacement | Remove old fixture, install new LED fixture | Warehouses, high-bays, damaged or obsolete fixtures | $175–$450 (high-bays higher) |
| Exterior / parking lot | Replace pole heads and wall packs with LED | Security, dark-sky, reduced service calls | $350–$1,200 per head |
Costs vary with ceiling height, lift requirements, fixture quantity, and whether controls are added. Larger projects get better per-fixture pricing.
Our honest take on LED tubes
Plug-and-play (Type A) tubes that run on the old ballast are the cheapest option, but you’re still relying on an aging ballast that will fail. When it does, you’re back on the ladder. For most commercial clients we recommend either ballast-bypass tubes wired properly with labeled fixtures, or retrofit kits, which give you a genuinely new light source and driver.
Lighting Controls: The Part Most Retrofits Miss
Swapping fixtures one-for-one saves energy, but controls are where the second wave of savings comes from. Current energy codes (Illinois adopted the 2021 IECC for commercial buildings) require controls on many alterations. When a significant portion of fixtures in a space is replaced, the project can trigger requirements for:
- Occupancy / vacancy sensors in offices, restrooms, break rooms, storage, and warehouse aisles
- Daylight-responsive controls near windows and skylights
- Automatic shutoff or time-scheduling for after-hours
- Dimming / light-reduction controls in many space types
- Exterior controls that reduce or shut off lighting overnight
Whether a specific project triggers these requirements depends on its scope and the local building department, so we confirm with the village of Wheeling or Schaumburg during permitting rather than guessing. Either way, controls usually pay for themselves: warehouse aisle sensors alone can cut run hours in half.
Networked vs. standalone controls
| Control Type | Pros | Cons | Good Fit |
|---|---|---|---|
| Standalone sensors | Simple, inexpensive, no software | No central scheduling or reporting | Small offices, restrooms, storage |
| Fixture-integrated sensors | Each fixture dims/shuts off on its own; great in high-bay aisles | Slightly higher fixture cost | Warehouses, distribution |
| Networked wireless controls | Scheduling, zoning, energy reporting from a phone or PC | Higher upfront cost, commissioning required | Multi-tenant, larger facilities |
What the Retrofit Process Looks Like
- Walkthrough and fixture count. We document every fixture type, wattage, mounting height, and hours of use.
- Lighting layout check. For warehouses and spaces with new layouts, we verify foot-candle targets so you don’t end up with dark aisles or glare.
- Savings estimate. We compare existing and proposed wattage times your operating hours and utility rate to give a realistic payback period.
- Utility incentives. ComEd has historically offered business lighting incentives. Programs and amounts change, so we check what’s currently available before finalizing the proposal.
- Permit and scheduling. We can work nights or weekends so production, retail hours, or tenants aren’t disrupted.
- Installation, recycling, and commissioning. Old lamps and ballasts are disposed of properly, and sensors are set and tested.
Example Payback: Wheeling Warehouse
Here’s a simplified illustration (your numbers will differ):
| Item | Before | After |
|---|---|---|
| Fixtures | 40 × 400W metal halide (≈455W each) | 40 × 165W LED high-bay with sensors |
| Connected load | 18.2 kW | 6.6 kW |
| Annual hours | 4,000 | ≈2,800 effective (sensors) |
| Annual kWh | 72,800 | ≈18,500 |
| Energy cost at ~$0.12/kWh | ≈$8,700 | ≈$2,200 |
That’s roughly $6,500 a year in energy alone, before maintenance savings. A project like this commonly pays back in two to four years, sooner with incentives.
Electrical Issues We Often Find During Retrofits
A lighting project is a good time to catch problems in older buildings. On retrofits in Schaumburg office parks and Wheeling industrial buildings we regularly find overloaded or mislabeled lighting panels, deteriorated wiring at fixture whips, missing emergency lighting, and exit signs that don’t pass a battery test. We’ll flag these and quote fixes separately so you can decide. Learn more about our commercial and residential electrical services and lighting services.
Financing Your Project
For smaller commercial owners and landlords, we offer financing through Sunbit and PowerPay so you can spread the cost out while the energy savings start immediately. In many cases the monthly savings cover a large share of the payment.
Frequently Asked Questions
How long does a commercial LED retrofit take?
A small office might take a day or two. A 40,000 sq ft warehouse typically takes several days to a week, and we can schedule after hours.
Will LED lighting be too bright or harsh?
Not if it’s specified correctly. We choose color temperature (typically 3500K–4000K for offices, 4000K–5000K for warehouses) and use dimmable drivers so light levels can be tuned.
Do I need a permit for a lighting retrofit?
Often yes, especially for fixture replacements and new controls. Requirements vary by village; we handle permitting in Wheeling, Schaumburg, and surrounding communities.
Can you retrofit emergency and exit lighting too?
Yes. LED exit signs and emergency fixtures with battery backup are inexpensive and much more reliable than older units.
Are utility incentives still available?
ComEd has offered business lighting incentives for years, but programs change. We verify current offerings at the time of your quote.
Get a Lighting Retrofit Assessment
MMDS helps building owners and property managers in Wheeling, Schaumburg, and across the northwest suburbs cut lighting costs with properly designed LED retrofits and controls. Call (847) 221-6280 or contact us online to schedule a walkthrough.