How much does emergency HVAC service typically cost per hour?

Emergency HVAC service from Air Comfort Service, Inc. isn’t billed by the hour; the emergency service call starts at $199 plus any needed repairs, or $100 for Preferred Partner Plan members. That dispatch fee gets a trained technician to you right away, and the total then depends on the diagnosis and parts, if required. We routinely handle urgent calls across the St. Louis metro, including the Fenton area, with 24/7 availability.

What drives the final price after dispatch:

• Parts if needed to complete a repair
• Refrigerant if needed
• System type and condition (A/C, furnace, boiler, heat pump, rooftop unit)
• Accessibility of the equipment (if in high rise building, or large ladder is needed)

Our technician will review the results of the diagnostic test with you and walk through their recommendations. Any repair work would need to be authorized. If the system is overheating or sparking, power the system off and schedule emergency service.

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Updated: 2026-04-20

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Need help in Fenton, MO? Call 3148148455 or book online.