HVAC Service Cost Guide in Illinois

HVAC Service Cost

By Square HVAC

From frigid winters to humid summers, Illinois homeowners rely heavily on efficient HVAC systems year-round. Whether you’re upgrading your system or need urgent repairs, understanding the average cost of heating, cooling, and air quality services helps you make informed decisions. Here’s a detailed cost breakdown for common HVAC services in Illinois.


πŸ”₯ Heating Services

βœ… Heating Repair

  • Typical Cost: $150 – $800

  • Depends On: System type (furnace, boiler, ductless), part replacement, labor time

πŸ› οΈ Heating Installation

  • Typical Cost: $3,500 – $7,500

  • Includes: Furnace, labor, new ductwork (if required), and thermostats

πŸ”„ Boiler Services

  • Repair: $200 – $1,200

  • Replacement: $5,000 – $9,000, depending on system size and efficiency

🌬️ Ductless HVAC (Mini-Splits)

  • Installation Cost: $3,000 – $8,000 per zone

  • Ideal For: Homes without existing ductwork or zoned comfort control


❄️ Cooling Services

🧰 Air Conditioning Repair

  • Average Cost: $125 – $750

  • Common Issues: Refrigerant leaks, thermostat failures, capacitor or motor replacement

🧊 Air Conditioning Installation

  • Typical Range: $4,500 – $8,500

  • Factors: SEER rating, home size, ductwork needs

πŸ“‹ Air Conditioning Service

  • Tune-Up Cost: $100 – $250

  • Includes: Inspection, refrigerant check, electrical testing, and filter replacement


πŸ”§ Additional Services

πŸ’¨ Duct Repair & Duct Cleaning

  • Duct Repair: $300 – $1,000 depending on severity and accessibility

  • Duct Cleaning: $400 – $800 for a standard home, improves air quality and system efficiency

🧼 Air Purification

  • Installation Cost: $500 – $2,500, varies by technology (UV lights, HEPA, ionizers)

🌑️ WiFi Thermostats

  • Installation Cost: $150 – $600

  • Features: App control, energy monitoring, smart learning

πŸ’§ Humidifiers & Dehumidifiers

  • Installation Cost: $300 – $1,500

  • Benefits: Improved comfort, reduced allergens, and energy savings

πŸ”₯ Hot Water Heaters

  • Standard Replacement: $1,200 – $2,500

  • Tankless System: $2,500 – $4,500, offering energy efficiency & endless hot waters


🏒 Commercial HVAC

  • Service Costs: Vary widely based on system complexity, square footage, and zoning

  • Estimated Range: $5,000 – $50,000+ for full system installs

  • Services: Rooftop units, ductwork, zoning, energy management, and maintenance contracts


πŸ› οΈ Maintenance Plans

  • Annual Cost: $150 – $500

  • Includes: Seasonal tune-ups, priority scheduling, discounts on parts & repairs


βœ… Your Trusted HVAC Experts in Illinois

Whether you need a fast repair, a full system upgrade, or preventive maintenance, Square HVAC delivers reliable service and transparent pricing across Illinois. Our team is here to keep your home or business comfortable all year long.

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