Marquez Heating and Air Conditioning: Licensed HVAC Repair Serving Upland 91786

Common signs in our local climate include uneven heating or cooling between rooms, unusually high energy bills, and excessive dust throughout your home. You might also hear whistling sounds from the ducts. Our technicians can perform a professional pressure test to precisely locate and measure leaks, which is the most accurate way to diagnose this common Upland-area issue.

Given our local environment, we often recommend a multi-step approach. This can start with upgrading your HVAC air filter to a high-efficiency model and ensuring your ductwork is properly sealed and clean. For more comprehensive solutions, we install whole-home air purifiers that capture allergens and UV-C light systems that neutralize mold and bacteria circulating through your system, significantly improving the air your family breathes.

Our local weather, with hot summers and variable seasons, puts significant strain on HVAC systems. Regular maintenance is crucial to prevent the minor issues—like small duct leaks or dirty coils—from turning into major breakdowns during a heatwave. A seasonal tune-up by our team includes checking refrigerant levels, cleaning components, and inspecting duct connections, which helps maintain efficiency, improve air quality, and extend the life of your system.