Emergency HVAC St. Louis

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Get 3 FREE Emergency AC Repair quotes for your project today! Compare profiles, reviews, accreditations, portfolio, etc... and choose the best offer.

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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.

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  • Emerson
    3.8
    St. Louis, US

    Emerson is a global technology, software and engineering powerhouse driving innovation that makes the world healthier, safer, smarter and more sustainable.

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  • NOOTER St. Louis
    4.6
    1500 South 2nd St., St. Louis, 63104, US

    NOOTER is a fully integrated turnkey construction, multi-craft, construction engineering and maintenance contractor, in the industrial and commercial sectors. With vast experience, a highly-skilled multi-craft labor force and unlimited geographical reach, we respond in real-time to vital projects or emergency situations, when and wherever needed. Our goals are your goals: to achieve and maintain outperforming production environments for the life of your facility.

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  • Hussmann Corporation
    3.6
    St. Louis, US

    Hussmann is a leader in providing display merchandisers, refrigeration systems, installation and services to food retailers around the world. Inspired ideas that anticipate shoppers' desires. At Hussmann, our innovative thinking and integrated solutions are transforming the business of food retail and turning the shopping experience into a pleasure.

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  • 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.

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  • 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.

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  • 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.

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  • Aire Serv of St. Louis
    5
    Not Found, St. Louis, 63101, US

    Aire Serv of St. Louis is a locally owned and operated HVAC company serving the St. Louis, MO area. We are dedicated to providing expert service, upfront pricing, and 24/7 customer service. Our team of experienced technicians is committed to delivering reliable and efficient HVAC solutions for both residential and commercial customers. We offer a wide range of services, including AC repair, heating repair, maintenance, and installation. At Aire Serv, we believe in the Neighborly Done Right Promise™, ensuring that our customers receive the highest quality service and support.

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  • 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.

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  • 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.

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Frequently Asked Questions About Emergency HVAC Services

Find answers to common questions about emergency HVAC repair and 24/7 heating and cooling services.

How can I prevent mold in my HVAC system?

Mold growth in HVAC systems can cause health problems and reduce system efficiency. To minimize the risk of mold in your system:
  • Control Humidity: Keep indoor humidity levels between 30% and 50%.
  • Regularly Change Air Filters: Change your air filters at least every three months.
  • Clean Drip Pans and Condensate Drains: Regularly inspect and clean your AC unit's drip pans and condensate drains to prevent standing water.
  • Ensure Proper Ventilation: Adequate ventilation helps to reduce moisture buildup.
  • Schedule Professional Duct Cleaning: Consider regular air duct cleaning to remove mold and other contaminants.
Consult with a qualified HVAC technician if you suspect mold growth in your HVAC system.

How can I tell if my HVAC system is the correct size for my home?

If your HVAC system is not the correct size for your home, you may experience several problems:
  • Uneven Temperatures: Some rooms in your house might be significantly hotter or colder than others.
  • High Energy Bills: An undersized or oversized system will be inefficient and increase your utility costs.
  • Frequent Cycling: An oversized system will turn on and off more often than it should, which can lead to premature wear and tear.
  • Poor Humidity Control: Incorrect sizing can cause inadequate humidity control.
If you are experiencing any of these signs, have a professional determine whether your HVAC system is properly sized for your home.

What's the difference between a single-stage and two-stage furnace?

Single-stage furnaces have one level of heat output. They run at full capacity creating a cycle of on-and-off operation that can lead to temperature fluctuations. Two-stage furnaces have two levels of heat output: a lower setting for milder weather and a higher setting for colder conditions. This provides more consistent temperatures, better efficiency, and quieter operation.

How do I reset my HVAC system?

Sometimes, a simple reset can resolve minor HVAC issues. Follow these steps to reset your system:
  1. Turn off the system: Switch off your HVAC system at the thermostat.
  2. Turn off the power: Locate the circuit breaker for your HVAC system and turn it off.
  3. Wait: Wait a few minutes for the system to completely power down.
  4. Restore power: Turn the circuit breaker back on.
  5. Turn on the system: Switch your HVAC system on at the thermostat.
If the problem persists after resetting, it's best to contact a qualified HVAC technician for diagnosis and repair.

How can I prevent mold in my HVAC system?

Mold growth in HVAC systems can cause health problems and reduce system efficiency. To minimize the risk of mold in your system:
  • Control Humidity: Keep indoor humidity levels between 30% and 50%.
  • Regularly Change Air Filters: Change your air filters frequently.
  • Clean Drip Pans and Condensate Drains: Regularly inspect and clean your AC unit's drip pans and condensate drains to prevent standing water.
  • Ensure Proper Ventilation: Adequate ventilation helps to control humidity levels.
  • Schedule Professional Duct Cleaning: Have your ducts professionally cleaned every few years to remove mold and other contaminants.
Consult with a qualified HVAC technician if you suspect mold growth in your HVAC system.

How can I tell if my HVAC system is the correct size for my home?

If your HVAC system is not the correct size for your home, you may experience several problems:
  • Uneven Temperatures: Some rooms in your house might be significantly hotter or colder than others.
  • High Energy Bills: An undersized or oversized system will work harder and consume more energy.
  • Frequent Cycling: An oversized system will turn on and off too frequently, which can lead to premature wear and tear.
  • Poor Humidity Control: Incorrect sizing can cause inadequate humidity control.
If you are experiencing any of these signs, have a professional determine whether your HVAC system is properly sized for your home.

What's the difference between a single-stage and two-stage furnace?

Single-stage furnaces have one level of heat output. They run at full capacity until the set temperature is reached, then cycle off until the temperature drops again. Two-stage furnaces have two levels of heat output: a lower setting for milder weather and a higher setting for colder conditions. Two-stage systems improve overall comfort.

How do I reset my HVAC system?

Sometimes, a simple reset can resolve minor HVAC issues. Here's how to reset your HVAC system:
  1. Turn off the system: Switch off your HVAC system at the thermostat.
  2. Turn off the power: Locate the circuit breaker for your HVAC system and turn it off.
  3. Wait: Wait a few minutes for the system to completely power down.
  4. Restore power: Turn the circuit breaker back on.
  5. Turn on the system: Switch your HVAC system on at the thermostat.
If the problem persists after resetting, you likely have a more serious problem and should consult with a professional.