Professional HVAC Contractors in Springfield

Keep your home and office environment at the right temperature round the clock. Save big on energy bills. Call us today for timely HVAC system services at affordable rates. For over 33 years, DeLong Air, Inc. has been offering quality HVAC system services to both residential and commercial customers in Springfield and the surrounding area.

We specialize in the installation and repairing of a variety of HVAC systems, including AC units, boilers, steam humidifiers, gas furnaces, heat pumps and other systems. We proudly serve our customers in Springfield, Urbana, Yellow Springs and the surrounding area.

Our Services Include:

• Heating and Cooling System Services
• Geothermal System Installation and Repairs
• Gas Furnace Installation and Repairs
• Central Air Unit Installation and Repairs
• Heat Pump Installation and Repairs
• Steam Humidifier Installation and Repairs
• Boiler Installation and Repairs
• Mini-Split Installation and Repairs
• Nest Learning Thermostat Concierge
• Indoor Air Quality Product Services
• Smart Homeowner Maintenance Plans
• Commercial Energy Savings Agreements