AC Repair St. Louis

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  • One Hour Heating & Air Conditioning® of St. Louis
    5
    3636 S Geyer Rd Ste 100, St. Louis, 63129, US

    One Hour Heating & Air Conditioning is a premier HVAC service provider in the United States. We care about your comfort and respect your time, which is why we back all of our work with a 100% customer satisfaction guarantee for two years. Our team of experts is always on time, guaranteed, and we offer StraightForward Pricing with no hidden fees. We provide a range of services including emergency HVAC services, air conditioning, heating, furnace repair and installation, ductwork, and more. Our goal is to make your home feel like home, and we're here for you when you need us most.

  • Morgner Inc.
    4.6
    3154 S Brentwood Blvd, Saint Louis, 63119, US

    At Morgner Inc. Air Conditioning & Heating, making your home cozy is our biggest interest. That's why we supply lasting HVAC equipment and excellent work in St. Louis. Our technicians are knowledgeable in a full range of services, so you can feel confident in your results. They'll offer the support you are looking for, whether it's installing an updated HVAC system or servicing and maintaining your present equipment. We're here to help with all of your needs, so call us at 314-262-4541 or contact us online to get an appointment right away.

  • Kirkwood Heating & Air Conditioning
    4.7
    St. Louis, MO, 9350 Watson Industrial Park, 63126, US

    Kirkwood Heating and Cooling is a trusted HVAC company in St. Louis, MO, providing top-notch heating, cooling, and heat pump services. Our experienced team has been working in the industry for a long time, with the necessary skills, training, and certifications to resolve your heating, cooling, and indoor air quality problems. We offer a range of services, including repair, maintenance, installation, and replacement, with a focus on individual projects and attention to detail. Our fair pricing system caters to the customer's needs, and we ensure that the entire process occurs within your budget. We are available 24/7 for emergency services and offer a range of products from Carrier, including air conditioners, heat pumps, gas furnaces, programmable thermostats, humidifiers, ductless split systems, boilers, air cleaners, and zoning products.

  • Thomas Hoffmann Air Conditioning & Heating LLC
    4.9
    St. Louis, Missouri, 1623 Wendover Lane, 63131, US

    Thomas Hoffmann Air Conditioning & Heating LLC is a trusted provider of HVAC services in St. Louis, Missouri. With years of experience, our team of experts is dedicated to providing top-notch service, repair, and installation of air conditioning and heating systems. Our mission is to help our customers breathe easier today by providing exceptional indoor air quality assessments and solutions. We pride ourselves on our commitment to customer satisfaction, honesty, and integrity. Our team is led by Thomas Hoffmann, a seasoned professional with a passion for delivering exceptional service. We are fully accredited and insured, and our team is fully trained to handle all types of HVAC systems. Whether you need emergency service, routine maintenance, or a new installation, we are here to help. Contact us today to schedule your appointment and experience the difference for yourself.

  • AL-DON Indoor Air Quality Specialists
    4.4
    11740 Lackland Industrial Drive, St. Louis, 63146, US

    The Name St. Louisians Have Known & Trusted For Over 65 Years, AL-DON! We Install New AC and Heating Systems Available NOW in the AL-DON Warehouse! Schedule Service Now. We are a trusted HVAC company providing residential and commercial services, including air conditioning, air ducts, boilers, mini-split systems, gas furnaces, heat pumps, indoor air quality, seasonal clean and check, radiant floor heating, and zone control systems.

  • JLM Heating and Air Conditioning
    5
    St. Louis, US

    Welcome to JLM Heating & Air Conditioning, we provide top-notch HVAC services to ensure your home or business remains comfortable year-round. Our experienced technicians are dedicated to delivering quality service and exceptional customer care. We proudly serve St. Louis, MO, and the surrounding areas. Contact us for a free estimate today! We offer a comprehensive range of HVAC services to meet your needs: heating, air conditioning, indoor air quality, boilers, refrigeration, geothermal, heat pumps, AAON/Wattmaster, and water heaters. Our experienced technicians are dedicated to delivering quality service and exceptional customer care.

  • Tri State Mechanical Services Inc
    4.4
    2338 N Lindbergh Blvd, St. Louis, MO 63132, 63132, US

    Tri-State Mechanical Services is a family-owned and operated mechanical contracting service serving the St. Louis and Metro areas, including Central Missouri and Southern Illinois since 1989. We pride ourselves on providing the highest quality workmanship every day as we build long-term relationships with our clients. We are a full-service mechanical contractor specializing in HVAC & Food Service Equipment. Our services include installation, sales, repair, and service for air conditioning and heating, commercial refrigeration, and kitchen equipment. We have a professional team of technicians who provide honest and dependable service 24/7. We service all brands, including York, Lennox, Carrier, Rheem, Ruud, and Trane. We also have a 24-hour emergency service available with an extensive parts stock for all commercial and residential equipment, old and new. If we don't have it, we'll source it fast. We are your one-stop shop for all your mechanical contracting needs in St. Louis.

  • Galmiche & Sons Heating & Cooling
    4.2
    2280 Chaffee Drive, St. Louis, 63146, US

    Galmiche & Sons, Inc. is a family-owned heating and cooling service provider in St. Louis, MO. What began as a gutter installation company 58 years ago is now one of the most trusted names for providing heating and cooling solutions to homes and commercial establishments in the greater St. Louis area. As HVAC contractors, we specialize in everything from repair to new installation and are a one-stop service provider for all your heating and cooling needs. We are in the business of making interior spaces more comfortable for you. Galmiche & Sons, Inc. is a leading heating, air conditioning, and ventilation specialist. Replacing old equipment, revamping ductwork, and designing full HVAC systems are few of our basic services. We hire only EFA certified and trained technicians who ensure excellent workmanship and timely work. We are committed to providing each customer only the best quality in products, services, and customer care. We can customize our services per your requirements and, no matter what you needs, we can offer a solution.

  • Person HVAC, LLC
    4.6
    3205 Natural Bridge Ave, St. Louis, 63107, US

    Person HVAC is a full-service commercial and residential heating and cooling contractor located in St. Louis, MO. Our highly skilled technicians are dedicated to providing exceptional service and ensuring customer satisfaction. We offer a wide range of services including installation, repair, and maintenance of heating and air conditioning systems. We use state-of-the-art equipment and our automated sheet metal fabrication facility is capable of producing more than .5 million pounds of ductwork annually.

  • Fresh Air Duct Cleaning of St Louis
    4.6
    St. Louis, US

    Fresh Air Duct Cleaning of St Louis is a State & County approved vendor and is here to serve you. We will gladly provide references as well as specifications upon request. We have been servicing the St Louis, area for over 10 years and we offer the most Affordable Duct Cleaning Services in St Louis and the Surrounding County area’s. Check out our Up-Front Pricing! Our BBB A Rating and customer references speak for themselves. We are the best air duct cleaning service in the St Louis area, providing high quality work, fast and qualified service, and competitively priced. We have provided HVAC air duct cleaning services to hundreds of major corporations, numerous municipalities, many hospitals, State buildings, County Facilities and Retail Stores. Whether you are in St Louis City and the Counties of St Louis or any other part of the state of Missouri, our professional duct cleaning services will meet or exceed your expectations.

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Frequently Asked Questions About AC Repair

Experiencing problems with your air conditioning? Concerned about rising energy bills due to inefficient cooling? Find answers to common questions about AC repair and connect with qualified HVAC technicians in USA.

What are the most common AC problems?

Air conditioners can experience a variety of issues, some more common than others. Here are some of the most frequent problems homeowners face:
  • Refrigerant Leaks: Low refrigerant levels reduce cooling capacity and can damage the compressor. Signs include warm air, ice on lines, and hissing sounds.
  • Frozen Evaporator Coil: Restricted airflow (often from a dirty air filter) can cause ice to form on the coil, hindering cooling.
  • Dirty Air Filters: A clogged filter restricts airflow, reducing efficiency and potentially causing other problems.
  • Faulty Capacitor: The capacitor helps start the motor. A bad capacitor can prevent the AC from turning on or cause intermittent operation.
  • Compressor Problems: The compressor is the heart of the system. Issues here are serious and often require professional repair or replacement. Look for unusual noises, reduced cooling, or frequent cycling.
  • Thermostat Malfunctions: An inaccurate or unresponsive thermostat can lead to inefficient cooling or prevent the system from turning on/off properly.
  • Clogged Condensate Drain Line: The drain line removes condensation. If blocked, it can cause water leaks or damage to the system.
If you notice any of these problems, consult a qualified HVAC technician for diagnosis and repair.

How do I reset my AC unit?

Sometimes a simple reset can resolve minor AC issues. Here's how to reset most residential AC units:1. **Turn off the AC at the thermostat:** Set it to the 'off' position.2. **Turn off power at the breaker panel:** Locate the circuit breaker that controls your AC unit and switch it to the 'off' position.3. **Wait 5-10 minutes:** This allows the system to completely power down and reset any internal electronics.4. **Turn the breaker back on:** Flip the circuit breaker back to the 'on' position.5. **Turn on the AC at the thermostat:** Set the thermostat to your desired cooling temperature. If resetting doesn't work, contact a professional HVAC repair service. DIY electrical repairs on AC units are highly discouraged.

How do I fix a frozen AC unit?

Follow these steps to thaw a frozen AC unit:1. **Turn off the cooling system:** Set the thermostat to 'off' to stop the cooling cycle and prevent further damage to the compressor.2. **Turn on the fan:** Set the thermostat's fan setting to 'on' or 'auto.' This circulates warmer air over the frozen coil, helping it thaw more quickly..3. **Find and address the underlying cause:** Inspect the air filter and clean or replace it if it's dirty. If the filter is clean, the problem might be more complex, such as a refrigerant leak.4. **Call an HVAC technician if the problem persists:** If the unit freezes up again after thawing, or if you suspect a refrigerant leak, contact a qualified HVAC professional promptly for diagnosis and repair. Avoid using sharp objects or tools to remove ice.

What is the difference between a central AC and a heat pump?

The key difference between a central AC and a heat pump lies in their functionality. A central AC system only cools, relying on a separate furnace for heating during colder months. A heat pump, on the other hand, provides both heating and cooling. It can extract heat from the outdoor air even in relatively cold temperatures (down to a certain point), providing efficient heating. In summer, it reverses the process to cool your home. Heat pumps are often a more energy-efficient choice than a separate AC and furnace, especially in mild to moderate climates.

What are the most common AC problems?

Air conditioners can experience a variety of issues, some more common than others. Here are some of the most frequent problems homeowners face:
  • Refrigerant Leaks: Low refrigerant levels reduce cooling capacity and can damage the compressor. Signs include warm air, ice on lines, and hissing sounds.
  • Frozen Evaporator Coil: Restricted airflow (often from a dirty air filter) can cause ice to form on the coil, hindering cooling.
  • Dirty Air Filters: A clogged filter restricts airflow, reducing efficiency and potentially causing other problems.
  • Faulty Capacitor: The capacitor helps start the motor. A bad capacitor can prevent the AC from turning on or cause intermittent operation.
  • Compressor Problems: The compressor is the heart of the system. Issues here are serious and often require professional repair or replacement. Look for unusual noises, reduced cooling, or frequent cycling.
  • Thermostat Malfunctions: An inaccurate or unresponsive thermostat can lead to inefficient cooling or prevent the system from turning on/off properly.
  • Clogged Condensate Drain Line: The drain line removes condensation. If blocked, it can cause water leaks or damage to the system.
If you notice any of these problems, consult a qualified HVAC technician for diagnosis and repair.

How do I reset my AC unit?

Resetting your system is a basic troubleshooting step. Here's how to reset most residential AC units:1. **Turn off the AC at the thermostat:** Set it to the 'off' position.2. **Turn off power at the breaker panel:** Locate the circuit breaker that controls your AC unit and switch it to the 'off' position.3. **Wait 5-10 minutes:** This allows the system to completely power down and reset any internal electronics.4. **Turn the breaker back on:** Flip the circuit breaker back to the 'on' position.5. **Turn on the AC at the thermostat:** Set the thermostat to your desired cooling temperature.If the problem persists, it's likely a more serious issue, and you should contact a qualified HVAC technician. Never attempt electrical repairs on your AC unit unless you are qualified to do so safely..

How do I fix a frozen AC unit?

If you discover your AC unit is frozen, here's what to do::1. **Turn off the cooling system:** Set the thermostat to 'off' to stop the cooling cycle and prevent further damage to the compressor.2. **Turn on the fan:** Set the thermostat's fan setting to 'on' or 'auto.' This circulates warmer air over the frozen coil, helping it thaw more quickly..3. **Find and address the underlying cause:** Inspect the air filter and clean or replace it if it's dirty. If the filter is clean, the problem might be more complex, such as a refrigerant leak.4. **Call an HVAC technician if the problem persists:** If the unit freezes up again after thawing, or if you suspect a refrigerant leak, contact a licensed service provider promptly for diagnosis and repair.Never try to chip away ice from the coil; this can damage delicate fins.

What is the difference between a central AC and a heat pump?

The key difference between a central AC and a heat pump lies in their functionality. A central AC system only cools, relying on a separate furnace for heating during colder months. A heat pump, on the other hand, provides both heating and cooling. It can extract heat from the outdoor air even in relatively cold temperatures (down to a certain point), providing efficient heating. In summer, it reverses the process to cool your home. Heat pumps are often a more energy-efficient choice than a separate AC and furnace, especially in mild to moderate climates.