About Us

Welcome to On Q Services LLC, conveniently located in southern Maryland. We serve the Washington D.C. metropolitan area and surrounding areas with our air conditioner installation, repair and replacement services. We are family owned and operated, and strive to deliver the highest level of customer service. On Q has experienced, friendly technicians ready to diagnose, adjust, repair, or replace your residential and/or light commercial HVAC system today. We offer maintenance plans for your HVAC system, residential and/or commercial. Book us online or call/text today! About the Owner On Q Services LLC was started by Carlos Queen, an HVAC service technician/installer with 20 years of experience. Carlos started his career as an apprentice, and has worked his way up throughout the years to a Master Technician. He has worked for several major HVAC companies, during which he has won numerous nationally recognized awards for his superior customer service and technical skills. Carlos prides himself on customer service, and is constantly striving to set himself and his company apart from other major HVAC service providers. With customer service at the forefront, On Q Services business model is to educate customers about their HVAC systems, provide exceptional service, fair and upfront pricing, without sacrificing integrity. SERVICES Air Conditioning Whether you have ice on your outside air conditioning unit and no air is coming out of the air vents, or your home is simply not cooled to the right temperature, we can handle both your emergency air conditioning repairs or routine AC service calls. We are fully committed to doing what's best for our customers. ALWAYS! Whether you are dealing with an outside condenser that's not working, a faulty thermostat, uneven cooling, or a water leak from your indoor air conditioning unit, On Q Services will fix the problem promptly. Our experienced HVAC professionals can diagnose and troubleshoot a huge variety of home air conditioning problems and perform AC repair services you need to get your unit back in great working order. Call or text today! Heating Whether your heat pump is not working, your furnace is giving you trouble and needs repair, or you need a routine service check on your entire heating and cooling system, On Q Services offers superior HVAC service all over the greater Washington D.C. area. We will get your furnace and HVAC system back in great working order fast so you can get back to your life with minimum disruption. We are a southern Maryland based company and we believe in treating you the way we would like to be treated. We will not try to sell you a new furnace or heat pump. Instead, we will repair and maintain your current unit and try to minimize your cost. Because our business is largely based on repeat business and referrals from happy homeowners, we would much prefer to earn and keep your business than to make a quick sale at your expense. Call or text us, or schedule an appointment online if its more convenient. Installation When repairing your air conditioning and heating system is no longer an option, replacing your HVAC system with the right heating and cooling system is the first step. While most new air conditioning systems are not installed properly, an installation done by the book will ensure your new system will run smoothly for years free of premature breakdowns. Add to that a fair price, no high pressure sales techniques, you can count on getting the BEST value for your new HVAC system anywhere in the greater Washington D.C. area. The right unit(s) for your home, a top notch installation, a fair price, and the best value. That's our promise to you. Indoor Air Quality The air that you breathe in your home or office can greatly affect your health and comfort. Our team offers a number of air filtration solutions that allow you to breathe easier. No matter how much you clean your home you will never be able to remove all of the pollutants that saturate the air inside, but a filtration system from On Q Services can greatly enhance the air quality. Our systems, which include filtration in our HVAC units, are designed to remove allergens, dust and bacteria from the air, helping to quell issues with allergies, asthma and congestion. To find out how we can improve your homes air quality, contact On Q to request an in-house consult regarding the installation of a residential air filtration system. On Q has proudly served the region since 2015, installing high quality air filter systems in homes and businesses. Our fully trained and insured technicians take your health seriously and work hard to ensure that all aspects of air quality systems run dependably and efficiently, including: air filtration equipment air purification equipment ventilation UV filtration and lights humidifiers and dehumidifiers Maintenance Regular maintenance will reduce your heating and cooling costs and prevent untimely and costly repairs to your heating and air conditioning units. By keeping your AC units cleans and having regularly scheduled maintenance service visits to troubleshoot potential issues before any breakdown occurs, you will: increase the efficiency of your heating and AC system and lower your utility costs. Experience fewer problems with your HVAC system such as low freon or breakdowns. Extend the life of your furnace, heat pump, or central air conditioning unit. We offer maintenance plans for the greater Washington D.C. area. Residential and/or commercial plans are available. Book online or call us today to get started!


Service area

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Book a service call
Business hours
  • Monday

    9:00 AM to 5:00 PM

  • Tuesday

    9:00 AM to 5:00 PM

  • Wednesday

    9:00 AM to 5:00 PM

  • Thursday

    9:00 AM to 5:00 PM

  • Friday

    9:00 AM to 5:00 PM

Contact us

(240) 412-5585

info@onqservices.net