Reliable, professional service for homes and small businesses throughout North Orange County.
Broken AC? We diagnose and repair fast. Ready for a new system? We install quality units designed for Fullerton's hot summers.
Flickering lights, dead circuits, tripped breakers â we troubleshoot and fix electrical issues safely and correctly.
Going electric? We install home EV chargers with proper electrical hookup and all required permitting and inspections.
Upgrade from 100-amp to 200-amp service, add circuits, or improve electrical safety with professional panel work.
AC failure on a hot day? No power? Call us 24/7 and we'll dispatch a licensed tech to your Fullerton home right away.
Improve indoor air quality with professional duct cleaning, sealing, and ventilation upgrades for healthier homes.
Licensed, insured, and committed to your satisfaction since day one.
C10 and C20 licensed with full bonding and insurance. Every job meets California code and safety standards.
Same-day appointments available. We know your time is valuable and we respect it with quick, reliable service.
Emergency HVAC or electrical problems don't stop for business hours. We're here when you need us, anytime.
Upfront estimates with no hidden fees. You know exactly what to expect before we start work.
We stand behind our work. If you're not happy, we'll make it right. That's our promise to Fullerton families.
Serving Fullerton and North OC for years. We know the area, the homes, and what our customers need.
From Downtown Fullerton to the Anaheim border, we serve residential and commercial customers throughout North Orange County. Fullerton's mix of older craftsman homes and newer developments means we've got experience with every type of HVAC and electrical system â and we know how to fix them right.
Aerosphere Electric is your trusted local Fullerton HVAC contractor offering free estimates on all residential and commercial HVAC services. We specialize in AC repair, air conditioning installation, AC replacement, ductless mini split systems, central air, furnace repair, heat pump installation, heating maintenance, and energy efficient upgrades. Our licensed electricians handle panel upgrades, wiring, rewiring, outlet installation, lighting, surge protection, Level 2 EV charger installation for electric vehicles, and safety inspections. We also provide professional duct cleaning, ventilation, indoor air quality solutions, thermostat and smart thermostat installation, and water heater service. Every job includes a warranty and our 100% satisfaction guarantee. Available 24/7 for emergency service near Fullerton. Licensed C10 & C20 contractor. Call 714-499-6656 for same-day service.
Fullerton is a historic college town in north OC in Orange County, and like most Southern California communities it depends on reliable air conditioning and electrical systems year-round. Aerosphere Electric has served Fullerton homeowners and businesses with licensed, same-day HVAC and electrical repairs since the company was founded in Fountain Valley. Whether your central AC fails during a summer heat wave, your furnace stops working on a cold January night, or you need an EV charger installed for your new electric vehicle, our C10- and C20-licensed technicians arrive equipped to diagnose and fix the problem in a single visit whenever possible.
The historic college town in north OC character of Fullerton means our technicians encounter a wide range of system types and installation ages. Near the Cal State Fullerton area, properties may include older commercial HVAC equipment that requires specialized diagnostic tools. In neighborhoods like Downtown Fullerton and Sunny Hills, newer construction often features high-efficiency two-stage systems, smart thermostats, and 200-amp electrical panels ready for EV charger load. Our team is trained and equipped for all of them.
Fullerton's climate and local construction styles create specific patterns in HVAC and electrical service calls. AC refrigerant leaks and capacitor failures are the most common summer repair calls — both are same-day fixes our team handles daily. Older homes in established Fullerton neighborhoods frequently need electrical panel upgrades from 100-amp to 200-amp service to safely support modern appliances, EV chargers, and home office equipment. Duct leakage is another widespread issue: leaky ductwork can waste 20–30% of conditioned air, driving up energy bills without any obvious symptoms. Our duct inspection and sealing service is one of the most cost-effective upgrades available to Fullerton homeowners.
We hold dual C10 (electrical) and C20 (HVAC) contractor licenses — License #1108650 — which means one company can handle your complete home comfort and electrical needs under a single warranty. Our flat-rate pricing means you approve the cost before any work begins. We carry full liability insurance and workers' compensation, protecting your property and your peace of mind. Every job includes a follow-up check and a satisfaction guarantee. For Fullerton residents who need fast, reliable service they can trust, that combination is why Aerosphere has earned five-star reviews throughout Orange County.
We provide HVAC and electrical service throughout all of Fullerton, including Downtown Fullerton, Sunny Hills, Harbor Blvd corridor. No matter which part of Fullerton you are in, we can typically schedule a same-day or next-day appointment. Call 714-499-6656 or use the form above to book service today.
We offer same-day and next-day service for Fullerton and surrounding Orange County communities. For emergencies such as a broken AC during summer heat, our technicians typically arrive within 2–4 hours. Call 714-499-6656 for immediate assistance, 24/7.
Yes — Aerosphere Electric holds both a C10 electrical contractor license and a C20 HVAC contractor license. This means one company, one call, and one warranty for all your heating, cooling, and electrical needs in Fullerton.
Common AC repairs in Fullerton range from $180–$650 depending on the component. Capacitor replacements typically run $180–$280, refrigerant recharges $250–$450, and blower motor replacements $350–$650. We provide upfront flat-rate pricing before starting any work — no hidden fees.