The secret to reliable cooling with minimized energy use is scheduling regular AC maintenance in Rialto, CA with us. We’re 4 Points A/C & Heating, seriously good HVAC air conditioner maintenance team. We’re experienced in preventive care and AC system performance improvement. When our daytime temperatures hit the 90s and stay there for months, you rely on your AC system to keep up. We test, clean, and check components of your system from air filters to compressors, refrigerants, and air handling motors. From older hard-working systems to modern variable speed systems, our AC tune-ups help you get more service life and reduce energy use from your HVAC equipment in Rialto.