Southern Illinois HVAC Maintenance Programs You Can Trust

At K & D Refrigeration & Heating, we believe the best repair is the one you never have to make.
That’s why we offer custom preventative maintenance programs designed around your equipment, your schedule, and your budget.

From restaurants and grocery stores to offices and industrial spaces — we keep your systems running clean, safe, and efficient year-round.

Every business and every system is different, so we build your plan to fit you.
Here’s what we typically include in our preventative maintenance visits:

• Coil Cleaning & Spraying
  We deep-clean condenser and evaporator coils to remove dirt, grease, and buildup. Clean coils improve airflow, reduce energy use, and extend the life of your system.
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• Filter Changes
  Regular filter replacement helps maintain proper air quality, protects equipment from dust and debris, and keeps your system running smoothly.
   
• Ice Machine Deliming & Sanitizing
  We descale and sanitize your ice machines to prevent mineral buildup, foul odors, and bacteria growth — ensuring clean, safe ice for your customers.
   
• System Inspections
  We check refrigerant levels, electrical connections, fan motors, belts, and overall system performance to catch small issues before they turn into breakdowns.
   
• Temperature & Pressure Testing
  Our technicians verify that your systems are operating within manufacturer specifications for maximum efficiency and reliability.
   

No two businesses are the same, and neither are their maintenance needs.
We’ll work with you to design a custom service plan — whether that means monthly, quarterly, or seasonal visits — to match your equipment and workload.

Need after-hours service to avoid interrupting business? We can do that too.

• Reduces energy bills and operating costs
   
• Prevents emergency breakdowns
   
• Extends the life of your equipment
   
• Keeps systems clean and sanitary
   
• Protects your warranty coverage
   
• Keeps customers and employees comfortable

Our maintenance programs cover a full range of HVAC and refrigeration equipment, including:

• Rooftop units
   
• Walk-in coolers and freezers
   
• Reach-in coolers
   
• Ice machines
   
• Exhaust hoods and ventilation systems
   
• Air conditioners and furnaces

We invest in ongoing training for our staff to keep them updated on industry advancements. K & D Refrigeration believes that a well-educated team is key to delivering exceptional HVAC services.