B. F. Mahn & Sons, Inc.

B. F. Mahn & Sons, Inc. maintains a 4.9-star average across 924 customer reviews in De Soto, Missouri. As a full-service HVAC contractor, the team responds to residential heating, cooling, and water heating needs throughout Jefferson County and surrounding communities. The company operates Monday through Friday from 8 AM to 4 PM, providing scheduled maintenance calls and urgent repair services.

Customer reviews consistently highlight the team's rapid response capability. Reviewers describe receiving same-day or next-morning appointments, with technician Nolan arriving within the promised time window during an emergency water heater call. Another reviewer notes the crew responded within one hour on a frigid Saturday, restoring heat during dangerously cold weather. Multiple customers specifically praise the technicians for explaining repairs in understandable terms and providing upfront pricing before work begins.

Named techniciansappear repeatedly across the feedback, each associated with distinct customer scenarios. Technician Nolan B. navigated severe weather to reach a stranded homeowner and completed repairs on the same day he was contacted. Pat is highlighted for demonstrating equipment details and walked customers through their systems after completing work. Marcus arrived within 45 minutes of a service request to address an AC failure, while reviewer Pam Guehne received a callback within 15 minutes and restoration of her heating system during an emergency weekend call.