McCarthy Services - Rockville's Qualified HVAC Services

That's likely a clogged condensate drain, a very common issue here due to our humidity. First, turn off the system to prevent water damage. You can try cleaning the accessible drain line with a wet/dry vacuum, but if the clog persists, it's best to call us. Our technicians will thoroughly clear the line, check the drain pan, and apply an algaecide treatment to prevent future clogs, protecting your home and system.

Inconsistent temperatures often point to a thermostat malfunction, which we see frequently. Before assuming it's broken, check for simple fixes: ensure it's level, has fresh batteries, and isn't affected by direct sunlight or drafts. If problems continue, our experts can diagnose whether it needs recalibration, wiring repair, or a replacement. We'll recommend a reliable model, including smart thermostats that can improve comfort and efficiency in your specific home.

Great question! Proactive maintenance is key. We recommend scheduling an annual HVAC tune-up, ideally before summer. During this service, we perform essential preventative tasks like clearing your condensate drain lines, checking refrigerant levels, cleaning coils, and inspecting electrical components. This not only helps prevent clogs and thermostat issues but also improves efficiency, extends your system's life, and can catch small problems before they become costly repairs.