Air Conditioning Services

Southern California's Trusted AC Experts Since 2008

When your air conditioner breaks down in the middle of a Southern California summer, you need fast reliable help from a company you can trust.

 

Northstar PHAC has been keeping homes and businesses cool throughout Southern California since 2008. From emergency AC repairs and precision tune-ups to complete system installations and replacements, our licensed technicians are ready to restore your comfort — often the same day you call.

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Call or Text Now: (909) 593-3353 | (866) 744-6192

Our Air Conditioning Services

AC Repair

Is your air conditioner blowing warm air, making unusual noises, freezing up, leaking water, or simply not turning on? Our licensed AC technicians diagnose and repair all major air conditioning brands quickly and accurately. We carry common parts on every service vehicle so most repairs are completed in a single visit — getting you cool again as fast as possible.

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Signs your AC needs repair:

• Air conditioner is blowing warm or lukewarm air

• AC is running but home is not cooling down

• Unusual banging, rattling, grinding, or squealing sounds

• Ice forming on the AC unit or refrigerant lines

• Water leaking around the indoor unit

• AC turns on and off frequently without reaching temperature

• Weak or restricted airflow from vents

• Burning or musty smell when AC is running

• Significantly higher electric bills than normal

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AC Installation & Replacement

If your air conditioner is 10 to 15 years old, requiring frequent repairs, or no longer keeping your home comfortable during peak summer heat, a new system installation may be your best investment. Northstar PHAC installs energy-efficient air conditioning systems from leading manufacturers, sized precisely for your home to maximize cooling performance and minimize energy costs.

Benefits of a new AC installation:

• Dramatically lower monthly energy bills

• More consistent and even cooling throughout your home

• Quieter operation than older systems

• Improved indoor air quality with modern filtration

• Smart thermostat compatibility

• Manufacturer warranty coverage

• Reduced repair costs and fewer breakdowns

We help you choose the right system for your home size, budget, and energy goals — and we handle the entire installation from start to finish including removal and disposal of your old unit.

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AC Maintenance & Tune-Up

Annual air conditioning maintenance is the single most effective way to prevent unexpected breakdowns during summer, extend the life of your system, and maintain peak energy efficiency. Our comprehensive AC tune-up includes:

• Full system inspection from indoor to outdoor unit

• Air filter inspection and replacement

• Cleaning of evaporator and condenser coils

• Refrigerant level check and leak inspection

• Thermostat calibration and testing

• Electrical connection inspection and tightening

• Condensate drain cleaning and inspection

• Fan blade inspection and cleaning

• Lubrication of all moving parts

• Airflow measurement and adjustment

• Complete written report of system condition and recommendations

We recommend scheduling your annual AC tune-up in the spring before summer heat arrives — so your system is ready to perform when Southern California temperatures peak.

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Mini Split Installation & Repair

Ductless mini split systems are an increasingly popular solution for homes without existing ductwork, room additions, garages, or areas of the home that need independent temperature control. Northstar PHAC installs and services all major mini split brands throughout Southern California.

Mini split services we provide:

• Ductless mini split installation — single zone and multi-zone

• Mini split repair and troubleshooting

• Mini split maintenance and cleaning

• Inverter heat pump system installation

• Mini split refrigerant recharge

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Emergency AC Repair

Air conditioning failures do not follow a schedule. When your AC goes down in the middle of a Southern California heat wave, every hour without cool air matters. Northstar PHAC offers emergency AC repair service throughout Southern California. If your air conditioning system fails and you need fast help, call us immediately.

Call Now for Emergency AC Service:
(909) 593-3353 | (866) 744-6192

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AC Brands We Service

Our technicians are trained to diagnose, repair, and maintain all major air conditioning brands including:

• Carrier

• Lennox

• Trane

• Rheem

• American Standard

• Bryant

• Goodman

• York

• Heil

• Amana

• Daikin

• Mitsubishi

• LG

• Samsung

• Fujitsu

• Ruud

If your brand is not listed — call us. Our technicians carry diagnostic tools and parts for virtually every residential and commercial air conditioning system on the market.

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Why Southern California Homeowners Choose Northstar PHAC

Licensed, Bonded & Insured
Every Northstar PHAC technician is fully licensed, bonded, and insured. You can trust that the person entering your home is a trained professional held to the highest industry standards.

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Same-Day & Next-Day Appointments
We understand that a broken AC in Southern California heat is an urgent situation. Northstar PHAC offers same-day and next-day appointments to get your air conditioning system back up and running as quickly as possible.

Transparent Upfront Pricing
No surprises on your bill. Before any work begins, we provide a clear written estimate so you know exactly what to expect. We never charge hidden fees or add unexpected charges after the job is done.

20+ Years of Combined Experience
Our seasoned technicians bring decades of hands-on experience to every AC service call — from simple refrigerant recharges to complete system replacements on complex commercial properties.

Serving Southern California Since 2008
We are not a national chain — we are your local neighbors. Northstar PHAC has been proudly serving families and businesses throughout San Bernardino, Riverside, Orange, and Los Angeles counties since 2008.

5-Star Rated on Yelp and Google
Thousands of satisfied customers across Southern California trust Northstar PHAC for their AC, heating, and plumbing needs. Read our reviews and see why we are the local choice for home comfort.

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AC Service Areas

Northstar PHAC provides air conditioning repair and installation throughout Southern California including:

San Bernardino County
Rancho Cucamonga · Ontario · Upland · Fontana · Rialto · Highland · Redlands · San Bernardino · Chino · Chino Hills · Redlands · Highland

Riverside County
Riverside · Corona · Moreno Valley · Jurupa Valley · Eastvale · Norco · Perris

Los Angeles County
Claremont · La Verne · San Dimas · Glendora · Covina · West Covina 

Orange County
Mission Viejo · Laguna Niguel · Aliso Viejo · Lake Forest · Dana Point · San Juan Capistrano · San Clemente · Rancho Santa Margarita · Laguna Hills

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AC Financing Available

We believe every Southern California homeowner deserves a cool and comfortable home regardless of budget. Northstar PHAC offers flexible financing options on new air conditioning system installations and major repairs — including low monthly payment plans for qualified customers.

Ask about our financing options when you call.

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Frequently Asked Questions — Air Conditioning Service

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How much does AC repair cost in Southern California?
AC repair costs in Southern California typically range from $150 to $700 depending on the type of repair needed, the parts required, and the brand of the system. Minor repairs like capacitor replacement or refrigerant recharge tend to cost less, while compressor or evaporator coil repairs may cost more. Northstar PHAC provides a clear written estimate before any work begins so you always know what to expect.

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How long does a central air conditioner last?
Most central air conditioning systems last between 10 and 15 years with regular maintenance. If your AC is approaching or exceeding 12 years and requiring frequent repairs, replacement is often more cost-effective than continued repairs — especially since newer systems are significantly more energy efficient. Our technicians can help you evaluate whether repair or replacement makes more financial sense for your specific system.

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How often should I have my AC serviced?
We recommend annual AC maintenance — ideally scheduled in the spring before the summer cooling season begins. Regular maintenance prevents unexpected breakdowns during peak heat, maintains energy efficiency, extends system life, and keeps your manufacturer warranty valid.

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Why is my AC running but not cooling my house?
Several issues can cause an AC to run without cooling effectively including low refrigerant levels, a dirty or clogged air filter, frozen evaporator coils, a failing compressor, or blocked condenser coils on the outdoor unit. Our technicians can diagnose the exact cause and provide a clear repair recommendation during your service call.

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What size AC unit do I need for my home?
AC sizing depends on your home's square footage, insulation quality, ceiling height, number of windows, sun exposure, and local climate. An AC that is too small will run constantly without reaching your desired temperature while one that is too large will cycle on and off inefficiently and create humidity problems. Northstar PHAC performs a proper load calculation before recommending any new system to ensure the right fit for your specific home.

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How long does AC installation take?
A standard central AC installation typically takes between four and eight hours depending on the complexity of the job, the size of the system, and whether any ductwork modifications are needed. Our technicians work efficiently and clean up completely before leaving your home.

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Do you offer same-day AC repair?
Yes. Northstar PHAC offers same-day and next-day AC repair appointments throughout Southern California. During peak summer months we recommend calling as early in the day as possible to secure a same-day appointment. Call (909) 593-3353 to schedule your service.

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What should I do if my AC stops working on a hot day?
First check your thermostat settings and replace the air filter if it is dirty. Check that your circuit breaker has not tripped. If the system still does not operate call Northstar PHAC at (909) 593-3353 for same-day emergency AC repair service throughout Southern California.

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Is it better to repair or replace my AC?
A general rule of thumb is that if your AC is more than 10 years old and the repair cost exceeds 50% of the cost of a new system, replacement is usually the smarter investment. A new system also comes with significantly better energy efficiency which lowers your monthly bills. Our technicians will give you an honest assessment of both options.

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Schedule Your AC Service Today

Whether you need a same-day AC repair, a new air conditioning installation, or an annual tune-up to prepare for summer — Northstar PHAC is ready to help. Call or text us now or click below to book your appointment online.

Call or Text: (909) 593-3353 | (866) 744-6192

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Email: info@northstarcares.com

Hours: 24/7

Northstar PHAC — Licensed, Bonded & Insured — Serving Southern California Since 2008