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 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 or refrigerant needed to complete the repair
• System type and condition (A/C, furnace, boiler, heat pump, rooftop unit)
• Complexity or accessibility of the equipment

Final pricing is confirmed after an on-site evaluation, so power the system off if it’s overheating or sparking and schedule emergency service. <br/> Updated: 2026-04-03 <br/> Need help in Fenton, MO? Call 3148148455 or book online.