Expert HVAC Services for Southern California

At DOAIR, we specialize in providing top-quality air conditioning and heating repair, installation, and maintenance services. Our team of experienced technicians is dedicated to keeping your residential, commercial, or industrial HVAC systems running smoothly.

DOAIR's HVAC service work-van parked at a Southern California job site.

24/7 Emergency HVAC Services

24/7 Emergency Response

HVAC emergencies can strike at any time. Fortunately, our emergency services are available 24/7, ensuring that help is just a call away whenever you need it.

Quick and Reliable Solutions

In an emergency, time is of the essence. Therefore, our technicians are trained to provide quick, reliable solutions, minimizing discomfort and downtime.

Air Conditioning Services

AC Repair

A malfunctioning AC can disrupt your day. Thankfully, our technicians swiftly diagnose issues and provide effective repairs, aiming for a quick return to comfort.

AC Installation

Choosing and installing the right air conditioner makes all the difference. Consequently, we guide you through selecting the perfect unit for your space and ensure a flawless installation for optimal performance.

AC Maintenance

Regular maintenance is key to prolonging your AC’s lifespan and maintaining efficiency. Moreover, our maintenance services keep your unit in top condition, preventing unexpected breakdowns.

Heating Services

Heating System Repair

When your heating system falters, timely repairs are critical. Accordingly, our team responds promptly, ensuring you don’t have to endure the cold longer than necessary.

Heating System Installation

Winters can be harsh, but with a reliable heating system, your space can be a warm refuge. Furthermore, we specialize in installing various types of heating systems, tailored to your specific needs.

Heating System Maintenance

Regular maintenance ensures your heating system’s longevity and efficiency. Additionally, we provide comprehensive checks and tune-ups, preparing you for the cold season well in advance.

Preventive Maintenance Plans

Benefits of Regular Maintenance

Regular maintenance not only prevents unexpected breakdowns but also ensures your system operates at peak efficiency, saving you money on energy bills.

Custom Maintenance Programs

Every setup is unique, and so are your maintenance needs. For this reason, we offer customizable maintenance plans, ensuring your HVAC system receives the care it needs, when it needs it.

Energy Efficiency Consultation

Energy-Saving Solutions

Maximize your system’s efficiency with our energy-saving solutions. For instance, from upgrading to energy-efficient units to optimizing your current setup, we help you reduce your carbon footprint and your energy bills.

Cost-Benefit Analysis

Investing in energy efficiency can save you money in the long run. To illustrate, we provide a detailed cost-benefit analysis, helping you make informed decisions about your HVAC investments.

Comprehensive HVAC Solutions

Residential HVAC Services

In the comfort of your home, a well-functioning HVAC system is not just a luxury—it’s a necessity. Specifically, our residential services ensure that your living space remains a haven, with efficient cooling in the scorching summers and cozy warmth during the chilly winters.

Commercial HVAC Services

Businesses can’t afford downtime caused by HVAC failures. Similarly, our commercial services are geared towards keeping your employees, customers, and operations comfortable and uninterrupted, no matter the weather outside.

Industrial HVAC Services

Industrial setups have unique requirements. For example, from maintaining specific temperatures to ensuring air quality, our team is equipped with the expertise to handle the complexities of industrial HVAC systems.

Why Choose DOAIR

Certified Technicians

Our team comprises certified professionals who are skilled in the latest HVAC technologies, ensuring high-quality service every time.

Commitment to Quality

At DOAIR, quality is not just a promise—it’s a guarantee. We use only the best materials and adhere to the highest standards in all our services.

Customer Testimonials

Don’t just take our word for it. Our satisfied customers are our biggest advocates, and their testimonials reflect the trust they place in our services.

Get in Touch

Contact Information

Ready to experience the DOAIR difference? Contact us for all your HVAC needs. Our team is here to provide expert advice and top-notch service.

Online Appointment Scheduling

Life is busy, but scheduling your HVAC services shouldn’t be. Use our online scheduling tool to book your appointment at a time that’s convenient for you.


Before calling a professional technician, check if the thermostat is set correctly, the circuit breakers are in the right position, and the filters are clean. If the issue persists, it’s best to contact our 24/7 emergency HVAC services for swift and effective solutions.

It’s recommended to have your system checked and serviced at least once a year, preferably before the heating or cooling season begins.

Custom maintenance programs are tailored to your specific HVAC setup, ensuring that your system receives the care it needs when it needs it. This personalized approach can prevent unexpected breakdowns, maintain peak efficiency, and save you money on energy bills.

Absolutely. Investing in energy-efficient HVAC units and optimizing your current setup can significantly reduce your energy consumption, leading to lower utility bills. Our detailed cost-benefit analysis can help you make informed decisions about your HVAC investments.

If your system is frequently breaking down, not heating or cooling your space effectively, or has become increasingly inefficient, it might be time to consider repair or replacement.

At DOAIR, we are committed to providing top-notch services with our team of certified professionals skilled in the latest HVAC technologies. We stand by the quality of our work, using only the best materials and adhering to the highest standards, ensuring that you receive efficient, reliable, and lasting solutions for your HVAC needs.