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Indoor Air Quality Solutions in Washington, Frederick, Franklin, & Berkely Counties

Larry & Sons has been helping households achieve better indoor air quality in MD, PA, and WV since the 1960s. Indoor air pollution is a serious health concern that impacts many families throughout the Tri-State area. Our team recommends regular home air quality testing as a preventative measure. We also install and service air quality equipment, including ventilators, air purifiers, germicidal lamps, humidifiers, and dehumidifiers.

Would you like to learn more about improving your indoor air quality in MD, PA, or WV? Contact Larry & Sons at your earliest convenience with any questions or to schedule an in-home consultation.

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Why Homeowners in MD, PA, and WV Choose Us for Air Quality Services

Larry & Sons offers the top brands for air cleaner, dehumidifier, and humidifier installation. Yet, what really sets us apart is our customer-centric approach. No matter how big we get, we remain committed to the “small-town touch” that made us successful in the first place.

Other excellent reasons to choose us for air cleaners and more include:

  • Over 60 years of HVAC experience
  • Customizable home service plans
  • Top-rated customer service
  • 24/7 customer service center
  • BBB accreditation with an A+ rating

Our Indoor Air Quality Services

Larry & Sons handles everything from identifying air quality challenges to eliminating them and keeping them gone. Our mission is to ensure that your family breathes the cleanest and healthiest air possible.

Our IAQ services include:

Air Quality Testing

Our experts recommend scheduling home air quality testing annually. Your home’s air quality and building envelope are closely related. That’s why we perform whole-house performance testing. We’ll test your air and identify potential issues, including indoor pollution sources, excess particulate matter, and elevated moisture levels. Our technicians will assess your HVAC systems. We’ll also review energy efficiency, ventilation, insulation, and so forth. From there, we can explore any necessary solutions, such as air cleaners and humidity control equipment.

System Installation and Replacement

Active air purification is often the best way to ensure you breathe clean air. Even if you eliminate all indoor pollution sources, there’s ambient pollution you have no control over. Whole-home air cleaners can filter all the air in your residence four or more times per hour. Air purifiers often provide mechanical filtration, such as a high-efficiency particulate air (HEPA) filter. HEPA filters remove at least 99.97% of particles as small as 0.3 microns in size. That includes dust, pollen, and mold. Activated carbon stages provide odor control and adsorb potentially toxic chemicals and gases.

Our experts also recommend ultraviolet (UV) light for pathogen control. While traditional air purification eliminates some, germicidal light systems can neutralize over 99% of bacteria, viruses, and other pathogens. Standalone in-duct UV lamps are usually the most effective since they benefit from the slower air movement in the ducts. We also install coil sanitizers for air conditioning and dehumidification systems.

Relative humidity (RH) is an important aspect of air quality as well. Maintaining 60% RH or below in summer is crucial for mold and pest control, and many experts recommend 50% or less. Strive for a 30% or higher RH in winter. If you struggle to reach these targets naturally, we offer solutions. Humidifier installation will help you maintain an optimal RH during colder weather. Dehumidifier installation will help you maintain it during hotter weather.

IAQ System Repair and Maintenance

Annual home air quality testing is also an excellent time to schedule maintenance. Ventilation systems, air purifiers, humidifiers, and dehumidifiers require annual cleaning and a multipoint inspection. UV lights generally require replacement every 12 months. Typically, we’ll need to swap out air purifier filter media every 12 months as well. If you require more frequent replacements, our team can provide that service too.

Routine checkups will generally prevent most repair issues. Still, you should monitor for performance issues and be proactive in calling us for a diagnostic. Small issues can quickly become big problems that cost you a lot more money and inconvenience. Track your energy consumption for unexplained increases in usage. Don’t ignore unpleasant smells even if they’re fleeting and only occur when your systems cycle on. You should also listen for any unusual noises, including rumbling, grinding, and clicking.

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Improve Your Indoor Air Quality Today in MD, PA, or WV

Larry & Sons is proud to help families breathe easier throughout MD, PA, and WV. We’re a fully licensed and insured company with skilled, uniformed technicians. Our company guarantees your satisfaction and stands behind our work with a lifetime guarantee. We have technicians on call around the clock for emergencies. Coupons and other specials are often available to help you save even more. We also offer flexible financing options on approved credit.

Larry & Sons is the premier choice for air purifier, humidifier, and dehumidifier installation, maintenance, and repair. Call today or contact us online for professional assistance improving your indoor air quality in MD, PA, and WV.

Indoor Air Quality FAQs

If you’re concerned about the air quality in your home, you likely have some questions. Let’s explore answers to a couple of the most common.


You may notice persistent bad odors, stale air, and excessive dust accumulation. Poor air quality can also affect your health, such as disrupted sleep, fatigue, headaches, and respiratory problems. The best way to know for certain is to schedule an indoor air quality test annually. Our team will assess your air quality, discuss the challenges you face, and explore your options to overcome them.

Schedule maintenance for your air quality systems at least once a year. Many experts recommend scheduling seasonally alongside your spring cooling tune-ups and fall heating tune-ups. Germicidal lights generally require annual replacement. Systems like whole-home ventilators, air purifiers, humidifiers, and dehumidifiers typically perform well for 10 years with proper maintenance.

 

Our Reviews

See What Your Neighbors Are Saying.

What a GREAT company! I only had two small jobs. The two ladies I spoke with were so kind and helpful. An electrician arrived within a few hours. He was fantastic, a man who knows his job. Very friendly and knowledgeable. He fixed everything quickly and wore shoe covers in the house. I HIGHLY recommend Larry…

Cathy G.

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Cathy G.

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Dave was great to work with. We called for emergency AC help. He arrived when expected and was very professional. He had everything on his truck to repair the issues and explained what was needed, where we stood with our system, what our options were on proceeding with the next step, and what the costs would…

Bernadette C.

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Bernadette C.

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Larry and Sons was able to schedule a technician out to my residence after scheduling for next day service. They even offered to place me on the waitlist for same day scheduling should any cancellations occur. Lyle Hickey, the technician was very knowledgeable, professional, efficient, and extremely patient during my service call. He diagnosed the issue…

Maya A.

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Maya A.

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I am thrilled with the service Tim Swartz and Larry and Sons provided for our plumbing needs. Tim did a thorough inspection of all the plumbing and found some issues that we can catch early before they become major problems. Tim was very low key and explained everything to a non-plumber girl like me so I…

Pamela R.

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Pamela R.

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The company scheduler was very helpful and got us a same day appointment. Matt, the technician was very prompt and professional and even provided advice on the issue. The price was reasonable even though the technician traveled from Maryland to our home in Martinsburg WV. I would recommend Larry and Sons for plumbing repairs to anyone.

Tomas M.

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Tomas M.

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