Indoor Air Quality Services in the DC Metro Area
The health and comfort of your family often depend on the quality of the air in your home. Yet, most people spend around 90% of their time inside, where air pollution levels can be two to five times higher than outside. Capps Mechanical offers indoor air quality services in the DC Metro Area. Our expert indoor air quality services are designed to create healthier living and working environments by improving air filtration, purification, and humidity control at an affordable price.
Why Indoor Air Quality Matters More Than You Think
It may sound counterintuitive, but you will often find more pollutants inside than outdoors, partly because modern energy-efficient homes can trap contaminants. Common culprits include dust, mold spores, pet dander, volatile organic compounds (VOCs), and radon (a naturally occurring carcinogen found in the Mid-Atlantic). Without proper indoor air quality, your home or workforce may face breathing issues, allergies that irritate the eyes and throat, and more severe, longer-term problems like heart disease and cancer. Vulnerable groups, including children and older adults, are more at risk. With poor air quality causing conditions like Sick Building Syndrome, it’s clear why maintaining clean indoor air is so important.

Whole-Home Air Filtration & Purification
Capps Mechanical specializes in whole-home air cleaning systems that can work with your current HVAC system. Options include:
- Advanced media filters that catch up to 98% of airborne contaminants
- Electronic air cleaners that use static pressure to filter pollutants
- Hospital-grade HEPA filters that can trap 99.97% of fine particles
These systems work continuously to get rid of allergens, viruses, mold, and dust, and they are especially important when you have HVAC fans working 24/7, like in a business. We can also install UV lights to get rid of airborne pathogens like flu and COVID-19.
Humidity Control for Year-Round Comfort
Being aware of the humidity levels in your home and working to maintain it has many benefits. It helps prevent mold and improves the overall indoor air quality. Humid summers in the Mid-Atlantic (with recent temperatures soaring above the average) and frequent rain can create moisture issues indoors. Capps Mechanical offers ducted and ductless humidification and dehumidification solutions tailored to each home or business, helping you stay comfortable all year round.
Our Mitsubishi & Trane Air Quality Solutions
Capps Mechanical is a Mitsubishi Diamond Contractor and Trane partner. We provide innovative air quality systems you can trust, installed by highly trained technicians who undergo a five-year apprenticeship through Steamfitters Local Union 602. Our expertise ensures you will always receive professional installation, maintenance, and custom multi-zone configurations. We also offer financing options and guidance on qualifying rebates for upgrading your current system. You can read our testimonials to see examples of our work.
Breathe Easy with Capps Mechanical

With over 135 years of combined expertise serving the Washington, D.C. area, Capps Mechanical is committed to trust, skill, integrity, and craftsmanship. Our technicians treat every home and business with respect and deliver reliable, tailored solutions to improve indoor air quality and well-being. To experience cleaner and fresher air, schedule an air quality improvement assessment today. For ongoing HVAC health, explore our HVAC maintenance and heating installation services on our website. Contact Capps Mechanical to begin improving your indoor air quality today.