HVAC services in Diamond Bar

When the heat rises in Diamond Bar, you need a cooling system you can rely on. At California Air Control Inc., we offer complete cooling services including AC repair, replacement, installation, and maintenance. Our technicians quickly diagnose issues—from refrigerant leaks to broken compressors—and provide long-lasting repairs that restore your unit's efficiency. For older systems, we recommend energy-efficient replacements that lower your utility bills and keep your home consistently cool.

We work with all major AC brands and use only high-quality parts. Our preventive maintenance plans include thorough inspections, coil cleaning, filter changes, and performance testing to catch small problems before they become costly emergencies. Whether you need a same-day repair or a complete system overhaul, we arrive on time, work cleanly, and ensure you understand every step. With our cooling services, you can enjoy a worry-free summer without sweating the small stuff. Call us to schedule your AC service today.

Stay warm and safe during the colder months with professional heating services from California Air Control Inc. We specialize in furnace repair, replacement, installation, and maintenance for both gas and electric systems. Our team also handles electric heat pump installation, repair, and maintenance—providing an energy-efficient alternative to traditional furnaces. If your furnace makes strange noises, cycles too frequently, or fails to heat certain rooms, we will find the root cause and fix it fast.

We install high-efficiency furnaces and heat pumps that reduce energy consumption while delivering consistent warmth. Our maintenance includes heat exchanger inspection, burner cleaning, thermostat calibration, and airflow testing. For homeowners considering an upgrade, we offer honest advice on the best system for your home size and budget. With our heating services, you never have to worry about a breakdown on the coldest night. Trust our experience to keep your family cozy and your energy bills manageable all winter long.

Improve the air you breathe with our comprehensive indoor air quality (IAQ) services. California Air Control Inc. helps homeowners in Diamond Bar reduce allergens, dust, mold spores, and airborne contaminants through air purification, UV lamp installation, advanced filtration, and duct sealing. Poor indoor air quality can trigger allergies, asthma, and other respiratory issues—especially in tightly sealed modern homes. Our IAQ solutions remove particles and pathogens, creating a healthier environment for your family.

We install whole-house air purifiers, UV germicidal lights that neutralize bacteria and viruses, and high-efficiency media filters that capture microscopic particles. Our duct sealing service prevents dust and pollen from entering your living spaces through leaky ductwork. We also test humidity levels and recommend whole-house dehumidifiers if needed. Every solution is tailored to your home's specific needs and budget. Breathe easier knowing you have clean, fresh air circulating through every room. Contact us to schedule an indoor air quality assessment today.