How It Works
The furnace heats air in a heat exchanger, and a blower pushes the warmed air through supply ducts. Return ducts bring cooler air back to the furnace.
Forced Air vs. Hydronic
Forced air uses ducts and air; hydronic systems use boilers, water, and radiators. See our furnace vs. boiler guide for the comparison.
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Frequently Asked Questions
Request service
Submit a service request and a coordinator will contact you to confirm technician availability. We do not confirm an appointment until availability is verified.
What happens next: A coordinator reviews your request, confirms the service type and location, and contacts you to schedule.
For emergencies: Call (312) 555-HVAC or request emergency service. For a gas leak or carbon monoxide, leave the building and call your gas utility or 911 first.
Request service
Submit a service request and a coordinator will contact you to confirm technician availability. We do not confirm an appointment until availability is verified.