The evaporator is where the cold happens. It's the coil and fan assembly inside your walk-in, cold room or reach-in that pulls heat out of the air. When it leaks, ices over or loses a fan, the whole system suffers. J and G Refrigeration repairs and replaces evaporator coils and assemblies throughout Rockford and Northern Illinois.
We handle everything on the evaporator: coils, fan motors and blades, defrost heaters, drain pans, drain lines and expansion valves.
Signs You Need Evaporator Coil & Assembly Repair
- Ice on the coil that doesn't melt during defrost
- Fans not spinning or making noise
- Water dripping from the evaporator
- Oily residue on the coil (possible leak)
- Box slowly losing temperature
Common Problems We Fix
Refrigerant leak in the coil
Corrosion and vibration can cause small leaks that slowly drain the system.
Iced-over coil
Defrost failures or low airflow freeze the coil solid.
Failed fan motors
One bad fan reduces capacity; several leave the box warm.
Clogged or frozen drain
Water backs up, overflows the pan and drips into the box.
Expansion valve problems
A stuck or misadjusted valve starves or floods the coil.
Our Process
- 1
Inspect the assembly
We look at the coil, fans, heaters and drain.
- 2
Leak check
If a leak is suspected, we locate it.
- 3
Repair or replace
We repair what can be repaired and replace what can't.
- 4
Recharge and verify
We restore the proper charge and confirm cooling.
Why Fast Response Matters
Evaporator problems usually get worse quickly. A leaking coil keeps losing refrigerant, and an iced coil can damage fans and drain pans. Fast repair limits the damage and the cost.
Equipment & Brands We Service
- Walk-in evaporators and unit coolers
- Low-profile and medium-profile coils
- Fan motors and blades
- Defrost heaters
- Drain pans and drain line heaters
- Expansion valves
We work on most major commercial refrigeration brands, including True, Traulsen, Beverage-Air, Turbo Air, Hoshizaki, Kolpak, Norlake, Master-Bilt, Heatcraft, Russell, Copeland, Hussmann, Hill Phoenix and many others. Not sure about yours? Call with the make and model.
Why Choose J and G Refrigeration
Open 24/7
We answer nights, weekends and holidays — every day of the year.
Fast response
Rapid dispatch from Kirkland to protect your product.
Commercial specialists
Walk-ins, reach-ins, display cases and cold rooms are what we do.
Local to Northern Illinois
Owner-operated and based right here — not a national call center.
Learn more about our refrigeration work for warehouses & cold storage.
Evaporator Coil & Assembly Repair FAQs
Can a leaking evaporator coil be repaired?
Sometimes. Small accessible leaks may be repairable; otherwise replacement is the better long-term choice.
Why does my evaporator keep icing up?
Usually a defrost problem, low airflow, a bad fan or low refrigerant charge.
Can you replace evaporator fan motors?
Yes. Fan motor replacement is one of our most common repairs.
How long does an evaporator replacement take?
It depends on the unit and parts availability. We'll give you a clear timeline.
Areas We Serve for Evaporator Coil & Assembly Repair
- Evaporator Coil & Assembly Repair in Rockford, IL
- Evaporator Coil & Assembly Repair in Loves Park, IL
- Evaporator Coil & Assembly Repair in Machesney Park, IL
- Evaporator Coil & Assembly Repair in Cherry Valley, IL
- Evaporator Coil & Assembly Repair in Belvidere, IL
- Evaporator Coil & Assembly Repair in Kirkland, IL
- Evaporator Coil & Assembly Repair in Genoa, IL
- Evaporator Coil & Assembly Repair in DeKalb, IL
- Evaporator Coil & Assembly Repair in Sycamore, IL
- Evaporator Coil & Assembly Repair in Rochelle, IL
- Evaporator Coil & Assembly Repair in Byron, IL
- Evaporator Coil & Assembly Repair in Marengo, IL
- Evaporator Coil & Assembly Repair in Hampshire, IL
- Evaporator Coil & Assembly Repair in Huntley, IL
- Evaporator Coil & Assembly Repair in Elgin, IL
