AC Repair Keeping California Comfortable

Professional, Reliable AC Repair Services in Corte Madera

Premier Choice for AC Repair in Marin & San Francisco

Since 2020, Tech Air has been San Francisco’s premier choice for heating and cooling services. We have earned our reputation as a trustworthy team that works quickly to keep California homeowners comfortable. With years of experience, our air conditioning repair services set the standard for quality. Our team delivers quick, reliable service with friendly professionalism every time. We also offer emergency services to ensure your home remains comfortable at all times.

We serve Marin County’s diverse communities—including Corte Madera, San Rafael, Novato, and Mill Valley—with local insight into the area’s climate and housing styles. Our licensed and insured technicians consider each property unique, assessing factors such as recent weather trends, construction age, and Marin County building codes that impact AC performance. As a veteran-owned business, we bring integrity, clear communication, and respect for your space on every call.

Tech Air stands as a Mitsubishi Electric Diamond™ Elite Contractor, which means we offer cutting-edge, energy-efficient products designed for lasting performance. Our commitment extends beyond technical quality—we provide straightforward service with no upselling, giving you only the repairs or improvements your situation truly requires. We treat every home and business as if it were our own, always with your comfort and satisfaction in mind.

Call (415) 909-3599 or contact Tech Air online today to get started.

Common Air Conditioner Problems

We handle every repair and give you fast estimates on all AC repair costs, from air handler replacement to drain pan repairs. Regardless of the issue, our team provides the right air conditioning equipment and expertise to restore your system quickly.

In Marin County’s coastal climate, AC units often face unique challenges like salt air exposure and variable humidity. Filters and coils can clog more quickly during spring pollen blooms or wildfire season. Our technicians pay close attention to these local conditions when diagnosing airflow issues or electrical problems, helping prevent minor issues from turning into costly breakdowns. We recommend homeowners keep vents clear and schedule system checkups ahead of Marin’s hottest months for better long-term reliability.

  • If your air conditioner is low on refrigerant, it must work harder to cool your home, resulting in higher energy consumption and potential overheating. This can damage the compressor, resulting in costly repairs or replacement.
  • The coils in your air conditioner need to be clean for the system to run efficiently. Dirty coils force your system to work harder, use more energy, and can harm the compressor.
  • If your thermostat isn't working properly, it can cause your air conditioner to run longer than needed, raising your energy bills.
  • The capacitor in your air conditioner helps start the compressor. If it stops working, the compressor will not start, and your system will be unable to cool your home.
  • The sensor in your air conditioner regulates temperature. A damaged sensor prevents proper cooling. Issues like a dirty air filter, duct leaks, or thermostat problems can cause short cycling, making the air conditioner turn on and off too often. This results in higher bills and increased wear and tear on your system.
  • The compressor is the heart of your air conditioner, and if it fails, your AC will be unable to cool your home.

Our AC Repair Services

Heating & cooling systems keep your home comfortable, so any problem can disrupt your routine. That’s where Tech Air steps in—with reliable air conditioning repair service to keep your system running optimally. 

We offer a range of air conditioning repair services, including but not limited to:

Our team repairs all brands and models of air conditioners, including ductless mini-splits and central AC units. We assess air quality, system efficiency, and thermostat performance to ensure your system operates efficiently across Marin County’s diverse microclimates. For businesses and multi-family properties, we deliver prompt service that minimizes downtime and disturbance, helping you maintain a comfortable and welcoming environment for both residents and clients. Whatever your needs, we are here to help. We work efficiently to restore comfort to your home as soon as possible.

We understand that heating & cooling issues don’t always occur during regular hours. That’s why we offer emergency services—our team is available 24/7 to help with any heating or cooling problem you encounter. We respond quickly to restore comfort so you can relax at home again.

When extreme heat waves or unexpected cold snaps hit Marin County, the demand for fast repairs increases. By basing our dispatch out of the area, we shorten response times when weather conditions change suddenly. Our flexible appointment scheduling, including evening and weekend hours, ensures you don’t have to wait long for relief. We understand the importance of a working AC or heater for families and businesses during local temperature fluctuations.

Suppose you’re considering a new air conditioning system, selecting the right unit for your home matters. The right choice affects both your energy bills and consistent comfort during California's warm summers. With numerous options available on the market, choosing can feel overwhelming. Tech Air is here to guide you every step of the way.

Replacing old systems with energy-efficient models often lowers energy costs in Marin’s climate, where both cool nights and warm, sunny days are common. Our team stays current with industry standards and Marin County building codes, including Title 24 energy requirements, to recommend solutions that meet your property’s specific needs. We also help you find rebates and energy-saving incentives for Marin County homeowners and businesses.

We will work with you to determine the best air conditioning system for your home, taking into account the size of your space, the number of residents, your budget, and other factors. After you select a system, we provide installation so you can begin enjoying your new air conditioner as soon as possible!

Signs You Need Air Conditioning Repair

Recognizing when your AC needs repair can prevent minor problems from escalating. If you notice inconsistent cooling, loud or unusual noises, water pooling around your unit, or a sudden increase in your energy bills, your system may require attention. Air quality changes—such as new smells or allergy flare-ups—also suggest underlying AC trouble, especially in Marin County, where pollen and outdoor particles can clog filters more quickly than in other areas.

Acting early helps you avoid a complete system shutdown during Marin’s hottest months. Other warning signs include frequent thermostat adjustments, the unit running longer than usual, or the system shutting off unexpectedly. If you notice any of these issues, reach out for an assessment to maintain consistent comfort in your home or business.

What Our Customers Are Saying

We're the Coolest in the Business

We've earned a reputation as a trustworthy team of experts you can rely on. See what some of our past customers say about their service.

    “Quick and Affordable”
    “Colin was reachable and attentive and made it his priority to get out and fix our problem ASAP.  They were quick, clean, respectful, and affordable. This is a five-star company with a great personal touch.”
    - Max H.
    “Tech Air is Top-Notch”
    “I would HIGHLY recommend Colin and Tech Air for all of your HVAC needs. I've worked with many contractors in my day and I have not experienced a contractor as good as Tech Air - this company is top notch.”
    - Ben R.
    “Honest and Fair”
    “I would highly highly highly recommend Tech Air. They were extremely professional, honest and fair with their pricing. We will absolutely use them again and would highly recommend to others!”
    - Marin M.
    “A Pleasure to Work With”
    “Communication with Colin was clear, straightforward, and direct. He was on time and a pleasure to work with. The quality of service, communication, and punctuality was reliably present in the work he did.”
    - Peter K.

Troubleshooting Your AC Unit

If your air conditioner isn’t working as it should, try these steps to troubleshoot the problem. First, check that the thermostat is set correctly. Next, see if the air filter needs replacement—a dirty filter reduces efficiency and strains the unit. If both filter and thermostat work, you may have an issue with the compressor or another internal part. If this happens, contact a professional for help.

On Marin County’s hottest days, even dependable units might struggle due to increased use or power surges. We recommend you inspect outdoor condenser units for blockages like overgrown plants or debris before calling for repairs. Ongoing maintenance—such as keeping vents clear and providing space around your AC equipment—reduces cooling problems, especially in coastal homes where salty air can speed up wear. Simple preventive steps help stop minor issues from turning into major repairs.

FAQs

Do you service all types of air conditioning units?

Yes, we handle repair and maintenance for all major brands and models, including central AC systems, ductless mini-splits, and heat pumps. Our licensed technicians adapt their work to your equipment’s exact setup and age.

What should I do before my AC repair appointment?

You can help our team by clearing obstructions around your indoor and outdoor units and noting recent symptoms or unusual system behavior. These steps help us diagnose and repair your system quickly so you can return to comfort sooner.

When you need an expert to help make your home comfortable again, we're ready to help. Call (415) 909-3599 or contact us online today.

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AC Repair FAQ

Frequently Asked Questions
  • What should I do if my air conditioner is leaking water?

    If your air conditioner is leaking water, it's important to take action quickly to prevent any damage to your home. First, try and determine where the leak is coming from. If it's coming from the unit itself, it's possible that there is a clog in the drain line. In this case, you'll need to call a professional for assistance. If the leak is coming from the indoor air handler, it's possible that there is a problem with the evaporator coil. Again, in this case, you'll need to call a professional for assistance. In either case, it's important to take action quickly to prevent any further damage to your home.

  • What are the benefits of a programmable thermostat?

    A programmable thermostat can save you money on your energy bills by allowing you to set specific temperatures for specific times of day. For example, you can set the temperature to be lower when you're not home and higher when you are home. This way, you're not paying to heat or cool an empty house. Programmable thermostats can also be used to keep your home at a comfortable temperature year-round, no matter the season.

  • How often should I have my air conditioner serviced?

    It's generally recommended that you have your air conditioner serviced once a year, in the spring. This way, you can be sure that it's in good working condition before the hot summer months (and make sure you're not stuck with warm air in the warm weather). Servicing your air conditioner involves cleaning the unit and checking for any potential problems. This can help to prevent issues like decreased efficiency and increased wear and tear.

  • What are some signs that I need a new air conditioner?

    If your air conditioner is more than 10 years old, it's time to start thinking about replacing it. Additionally, if your air conditioner isn't cooling your home properly, isn't cycling on and off correctly, or is making strange noises, it's time to call a professional for assistance. These are all signs that your air conditioner is in need of repair or replacement.

  • How can I save money on my energy bills?

    There are a number of ways you can save money on your energy bills. One way is to make sure your home is well-insulated. This will help to keep the heat in during the winter and the cool air in during the summer. Another way to save money on your energy bills is to use a programmable thermostat. This way, you can set specific temperatures for specific times of day, which can help you to save money on your energy bills. Additionally, you can save money on your energy bills by having your air conditioner serviced once a year. This will help to keep it in good working condition and prevent any potential problems.

  • What size air conditioner should I buy for my home?

    The size of air conditioner you need for your home depends on a number of factors, including the square footage of your home, the number of rooms in your home, and the climate. It's important to choose an air conditioner that is the right size for your home, as an air conditioner that is too small will not be able to effectively cool your home, and an air conditioner that is too large will use more energy than necessary. The best way to determine the right size air conditioner for your home is to call a professional for assistance.

  • What are some signs that my air conditioner is not working properly?

    There are a number of signs that your air conditioner is not working properly. One sign is that the unit is not cooling your home properly. Another sign is that the unit is cycling on and off more frequently than usual. Additionally, if you notice strange noises coming from the unit, this could be a sign that there is a problem. If you notice any of these signs, it's important to call a professional for assistance.

  • Can I do anything to prevent my air conditioner from breaking down?

    There are plenty of things you can do to prevent your air conditioner from breaking down. One thing you can do is to make sure the unit is serviced once a year. This will help to keep it in good working condition and prevent any potential problems. Additionally, you can make sure the unit is properly installed and that there is adequate ventilation around the unit. If you do these things, it's less likely that your air conditioner will break down.

  • Why has my energy bill gone up even though I haven't used my air conditioner more?

    There are many reasons why your energy bill may have gone up even if you haven't used your air conditioner more. One reason could be that the unit is not as efficient as it used to be. Another reason could be that the unit is not cycling on and off correctly. Additionally, the unit may be working harder than usual because of increased use of other appliances in the home. If you notice that your energy bill has gone up, it's important to call a professional for assistance.

  • Is it better to repair or replace my air conditioner?

    There is no simple answer to this question. The decision of whether to repair or replace your air conditioner depends on a number of factors, including the age of the unit, the severity of the problem, and the cost of repairs. In some cases, it may be more cost-effective to replace the unit. In other cases, it may be more cost-effective to repair the unit. The best way to determine whether to repair or replace your air conditioner is to call a professional for assistance.

The Tech Air Difference

Keeping California Cool
  • A Certified & Trusted Team

    Our Tech Air certified technicians are fully licensed, insured, and vetted.

  • Weekend Appointments

    If weekdays don't work for you, no problem - we can see you on the weekend!

  • Offering 100% Free Quotes

    Call or contact us today to set up a free estimate with our expert technicians.

  • Financing Options Available

    Your AC doesn't consult your wallet before it breaks, so we offer a variety of options.