Questions and Answers
What's included in your HVAC system maintenance service?
Our HVAC maintenance is a thorough check-up designed to keep your system running efficiently and reliably. We inspect key components, clean essential parts, and test system operation to catch small issues before they become major repairs. This proactive service can improve your system's lifespan and performance, especially important given our local climate. For O'Fallon residents, we pay special attention to common local issues like condensate drain lines to help prevent clogs and water damage.
My furnace isn't igniting on a cold O'Fallon morning. Can you help?
Absolutely. Furnace ignition failures, especially during our cold winters, are a frequent issue we handle for O'Fallon homeowners. This can be caused by a faulty ignitor, flame sensor, or gas valve. Our technicians are experienced in diagnosing and repairing these specific problems quickly to restore your heat. We offer service calls starting between $40-$75, and if we complete the repair, 25% of that fee is credited toward your labor costs.
Do you offer financing for a new water heater installation?
Yes, we provide financing options to make necessary installations like a new water heater more manageable. We understand that these are unexpected expenses. Alongside financing, we accept cash, checks, and credit cards. We also give free ballpark estimates over the phone so you can understand the project scope and cost before we arrive. Our goal is to provide a clear, affordable path to getting your hot water back reliably.
Our Story
Davis Heating And Cooling has been a trusted local service provider in O'Fallon, IL, and the surrounding bi-state area since 2008. With a dedicated team of five, we've built our reputation on reliable heating, cooling, and water heater services for hundreds of homeowners. We offer flexible payment options, including cash, checks, credit cards, and financing, to ensure our solutions fit your budget. Our approach is straightforward: we provide free ballpark estimates over the phone, and our service call fee is partially applied to your labor cost if we do the work. From air duct cleaning and HVAC maintenance to water heater installation and repair, we focus on practical, lasting fixes for your home comfort systems.
Provided Services
- Air duct cleaning
- HVAC system maintenance
- Water heater repair
- Water heater installation
Business Location & Hours
| Mon: | 9:00 AM - 5:00 PM |
| Tue: | 9:00 AM - 5:00 PM |
| Wed: | 9:00 AM - 5:00 PM |
| Thu: | 9:00 AM - 5:00 PM |
| Fri: | 9:00 AM - 5:00 PM |
| Sat: | 10:00 AM - 3:00 PM |
| Sun: | 11:00 AM - 2:00 PM |



















