Professional HVAC Repair in Duarte, CA 91010 - David Granillo Air Conditioning & Heating

Many Duarte homes have systems that are too large or too small, leading to poor efficiency and comfort. For any installation or replacement, we perform a detailed Manual J load calculation. This factors in your home's square footage, insulation, window placement, and Duarte's specific climate to determine the exact system size you need. A properly sized system runs more efficiently, lowers energy bills, and provides consistent, comfortable temperatures throughout your home.

Yes, dirty evaporator coils are a frequent culprit for weak cooling in our area. Dust and debris act as insulation, preventing the coil from absorbing heat effectively. Our repair service includes a comprehensive system inspection. If dirty coils are the problem, we perform a professional cleaning to restore full heat transfer. We also check for related issues like low refrigerant or airflow restrictions to ensure your entire system is working efficiently after the repair.

Signs include rooms that are never the right temperature, short-cycling (the system turns on and off frequently), excessively high humidity indoors, and unexpectedly high energy bills. If you're experiencing these issues, it's wise to have us evaluate your system. We can assess if your current unit is the wrong size and discuss repair options or a correctly sized replacement that will solve these problems for good.