Certified, and You Can Check It
Most people searching for a "certified HVAC technician" are really asking one question: can I trust this person in my house, working on a system that costs thousands to replace? The honest answer is that you should not take our word for it. California publishes contractor licences in a free public database, so you can verify us in about two minutes before you ever pick up the phone.
Aerosphere Electric is a family-owned contractor based at 17284 Newhope St Ste 215 in Fountain Valley, serving Orange County, LA County, the Inland Empire and San Diego County. We hold CSLB licence #1108650 in two classifications — C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) and C-10 (Electrical). Holding both under one company is uncommon, and it is the practical difference on most service calls: when an AC failure turns out to be electrical, we keep working instead of sending you a second contractor.
CSLB C-20 — HVAC
Licence #1108650. The classification California requires for heating, ventilation and air conditioning work, and the only way to legally pull an HVAC permit. Active, bonded, insured.
CSLB C-10 — Electrical
Same licence number, second classification. Covers the disconnect, the whip, the breaker, the circuit and the panel — the electrical half of HVAC that most HVAC companies must subcontract.
EPA Section 608
Federal certification required to handle refrigerant under the Clean Air Act. Required to legally buy R-410A or R-454B, recover a charge, or open a sealed system.
Factory Training
Manufacturer training across the lines we service, including Navien hydronic air handlers and the major central and ductless brands. Training is what decides whether a diagnosis is right.
How to Verify Any HVAC Contractor in California — in 2 Minutes
Do this for us, and do it for every other quote you get. It is free, it is public, and it is the single best protection you have as a homeowner.
- Open cslb.ca.gov and choose Check a Licence. Search by licence number or business name.
- Search 1108650 to see our record, or search the other company's number.
- Confirm the status reads ACTIVE. An expired or suspended licence means they cannot legally do the work or pull the permit.
- Confirm the classification matches the job. C-20 for HVAC, C-10 for electrical. A C-36 plumber is not licensed to install your furnace. This is the step almost nobody checks.
- Check the bond and workers' compensation. If workers' comp shows as exempt but they send a crew, you may be the one carrying the risk if someone is hurt on your property.
- Read the disciplinary history. It is listed on the same page. Blank is what you want to see.
- Ask for the EPA 608 card before anyone opens your refrigerant circuit, and ask for a certificate of insurance. A legitimate contractor will not be annoyed by either question.
Two more California specifics worth knowing. Any home improvement job over $500 in combined labour and materials legally requires a licensed contractor. And a contractor may not legally collect a down payment greater than $1,000 or 10% of the contract price, whichever is less — a large upfront demand is a warning sign, not a normal business term.
What Our Certifications Mean on an Actual Service Call
Credentials are only worth something if they change the outcome at your house. Here is where ours do.
- The AC that "won't turn on." This splits about evenly between HVAC causes (failed run capacitor, seized contactor, tripped high-pressure switch) and electrical causes (dead breaker, burnt disconnect, corroded whip, loose lug). A C-20-only company can only chase half of that list. We diagnose both on one visit, which is usually the difference between one trip charge and two.
- Refrigerant done by weight, not by feel. EPA 608 training means recovery, evacuation to a real micron target, and charging by weight or subcooling. Systems that get "topped off" by guess run overcharged and kill compressors years early.
- Permits that actually get pulled. A changeout in most Orange County cities requires a permit and inspection. Unpermitted work surfaces at resale and can void the manufacturer warranty on the equipment you just bought.
- Heat pump and EV circuits sized correctly. Heat pump conversions and Level 2 EV chargers frequently need a new circuit or a panel upgrade. That is C-10 work. We do the load calculation and the panel work ourselves.
- Warranty claims that stand up. Manufacturers generally require licensed installation for warranty coverage. Our licence number goes on the registration.
One thing we will be straight about: we do not hold NATE certification, and we are not going to imply we do. It is a legitimate voluntary exam. It is not a legal requirement, and it is not what we lean on. Our case is the dual C-20 plus C-10 licence, EPA 608, factory training, and a 5.0-star rating across 72 Google reviews.
Certified HVAC Service Across Orange County
Licensed, EPA-certified technicians dispatched 7 days a week, with 24/7 emergency service, across Fountain Valley, Huntington Beach, Costa Mesa, Newport Beach, Irvine, Santa Ana, Anaheim, Orange, Tustin, Garden Grove, Westminster, Stanton, Cypress, Buena Park, Fullerton, La Habra, Brea, Placentia, Yorba Linda, Villa Park, Lake Forest, Mission Viejo, Laguna Niguel, Aliso Viejo, Rancho Santa Margarita, Ladera Ranch, San Clemente, Dana Point, Seal Beach, Los Alamitos, Long Beach, Cerritos, Whittier, Torrance, Redondo Beach and Hermosa Beach.
Every technician arrives in a marked vehicle, and you get the licence number up front on the written estimate. Free estimates, fixed pricing before work starts, 0% APR financing available on approved credit.
Certified HVAC Technician — Common Questions
What certifications should an HVAC technician have in California?
Three things, in order of legal weight. First, a CSLB contractor licence — in California any HVAC job over $500 in combined labour and materials legally requires a licensed contractor, and the correct classification for heating and air conditioning is C-20. Second, EPA Section 608 certification — federal law under the Clean Air Act requires it for anyone who opens a refrigerant circuit, and a supply house cannot legally sell refrigerant to a technician without it. Third, manufacturer or factory training, which is what determines whether the technician can actually diagnose your specific equipment. Aerosphere Electric holds all three, plus a C-10 electrical licence. Voluntary industry credentials also exist — NATE is the best known, and we do not hold it — but none of them are legally required and none are a substitute for a CSLB licence.
How do I verify an HVAC technician is licensed in Orange County?
Go to cslb.ca.gov, choose 'Check a Licence', and search by licence number or business name. Aerosphere Electric is licence #1108650. The lookup shows the classifications held, whether the licence is active, the bond, workers' compensation coverage, and any disciplinary history. Confirm the classification matches your job: C-20 for heating and air conditioning, C-10 for electrical. Do this before any contractor starts work. If a company will not give you a licence number, that is the answer.
What is EPA 608 certification and why does it matter for AC repair?
EPA Section 608 is a federal certification required under the Clean Air Act for any technician who services, maintains or disposes of equipment containing refrigerant. Without it, a technician cannot legally purchase refrigerant or open a sealed system. It matters to you for a practical reason: an uncertified person working on your AC is likely venting refrigerant illegally, and is not trained in recovery, evacuation or charging by weight. That is how systems get overcharged, compressors fail early, and a repair turns into a replacement. Every Aerosphere Electric technician who touches a refrigerant circuit is EPA 608 certified.
Is Aerosphere Electric NATE certified?
No. We hold CSLB C-20 and C-10 contractor licences (#1108650), EPA Section 608 refrigerant certification, and manufacturer factory training on the equipment we service. NATE is a voluntary industry exam — a genuine credential, but not a legal requirement and not one we currently hold. We would rather tell you that plainly than let you assume otherwise. What we do have that very few HVAC companies have is both trades licensed under one company, which is what lets us handle the equipment and the circuit feeding it without subcontracting.
Why does a dual C-20 and C-10 licence matter for my HVAC job?
Because a large share of HVAC problems are actually electrical, and most HVAC companies are not licensed to touch them. A condenser that will not start can be a failed capacitor — HVAC work — or a bad breaker, a burnt disconnect, corroded whip wiring, or an undersized circuit — all electrical work requiring a C-10. A single-licence company has to either subcontract an electrician (another visit, another trip charge, scheduling delay) or work outside its classification. Aerosphere Electric holds both classifications under licence #1108650, so one technician diagnoses the whole failure on the first visit. This matters most on heat pump installs, new AC circuits, panel upgrades feeding HVAC equipment, and EV charger work.
Are your technicians insured and bonded?
Yes. Aerosphere Electric carries general liability insurance, workers' compensation, and the contractor's bond required by the CSLB. All three are visible on the CSLB licence lookup for #1108650. This protects you specifically: if an uninsured contractor's worker is injured on your property, or damages your home, you can end up liable. Ask for a certificate of insurance from any contractor you are considering — we will send ours before we arrive if you want it.
Do certified technicians cost more than unlicensed ones?
Per hour, sometimes. Per job, usually less. An unlicensed technician cannot pull a permit, which means unpermitted work that can fail at resale and void your manufacturer warranty. Most manufacturers require installation by a licensed contractor for the warranty to stand, so an unlicensed install can cost you a compressor warranty worth thousands. Aerosphere Electric gives free written estimates with fixed pricing before work begins, and offers 0% APR financing on approved credit. Our diagnostic is $89–$150 and applies to the repair.
What brands are your technicians factory-trained on?
We carry manufacturer training across the equipment we service most in Orange County, including Navien hydronic air handlers and hydro-air heating, and the major central and ductless lines — Trane, Lennox, Carrier, Bryant, Goodman, Amana, Daikin, Mitsubishi Electric, Rheem, York and Bosch. Each brand has its own dedicated service page describing the model lines and the failures we see most often. One scope note: we service heating, cooling, ventilation and electrical equipment only. We do not service water heaters or tankless water heaters of any brand.
Brands Our Technicians Are Trained On
Each brand below has its own page covering model lines, the failures we see most in Orange County, parts availability and typical repair cost. Full index: every brand we service.
Trane · Lennox · Carrier · Bryant · American Standard · Goodman · Amana · Daikin · Mitsubishi Electric · Rheem · York · Bosch · Navien · Fujitsu · LG · VRF & VRV systems
Related: Orange County HVAC · furnace & heating repair · heat pump services · about our company · licence verification detail
Scope: heating, cooling, ventilation and electrical only. We do not service water heaters or tankless water heaters of any brand.