Indoor Air Quality Services in the DC Metro Area
Breathe cleaner air today with professional indoor air quality services for homes across the Washington DC Metro Area. Our NATE certified HVAC technicians tailor solutions like whole-home purifiers, air scrubbers, filters, and humidification. We’ve served local homeowners since 1904 and hold an A+ BBB rating with a 4.8 score from 4,898 reviews. Serving Washington, DC, Arlington, VA, and Rockville, MD. Enjoy flat-rate pricing and convenient scheduling. Ask about $100 off an Air Knight UV air purifier installation. Call or book online to get started.
Why Choose Us
What Our Customers Say
"The installation process was smooth and quick."
"He did a very professional job."
"He took pictures to explain things and changed the filter."
Answers to Common Questions
View All FAQsHow much does it cost to install UV light in an HVAC system?
Installing a UV light in an HVAC system is a case-by-case cost, and final pricing is set after an on-site evaluation. The main variables are the UV model, mounting location, and any electrical or access work. Most homes get the best effect with a lamp near the evaporator coil to curb biofilm and odors. Our technicians regularly install whole-home UV systems for Northern Virginia homes. Choose UV to target germs at the coil; consider an Aerus Air Scrubber for chemical odors, or pair UV with extended media filtration for dust.
Price is most affected by:
- Single vs dual-lamp coverage
- Tight air-handler access or duct modifications
- Adding a nearby 120V outlet or switch
- Optional add-ons like upgraded filters
Current offer: $100 off an Air Knight UV Air Purifier installation. Schedule a visit so we can confirm placement and give you a written quote before any work. <br/> Updated: 2026-03-09 <br/> Need help in Springfield, VA? Call (703) 688-3873 or book online.
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Yes — most whole-home UV air purifiers can be repaired by replacing the UVC bulb. The most common cause of a nonworking UV stage is simply a spent lamp, which is a normal, replaceable part. John C. Flood installs and services HVAC-mounted UV systems and provides clear guidance on when and how to replace UVC bulbs for ongoing effectiveness. If a new bulb doesn’t restore operation, a technician should inspect the purifier within the HVAC for proper placement, wiring, and safe, code-compliant function. In our experience tuning IAQ systems, output can decline before a lamp fully fails, so timely replacement matters for results. Our team frequently services these UV installations across Northern Virginia without disrupting the home’s HVAC setup. Always power down equipment and let a pro handle electrical work inside the air handler. <br/> Updated: 2026-03-30 <br/> Need help in Springfield, VA? Call (703) 688-3873 or book online. "I will be using them again." — Dale Jr. helped in a crisis and explained options clearly. — Dale Jr. L.
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Service Areas We Cover
What areas do you serve for indoor air quality services?
We serve the Washington DC Metro Area, including Washington, DC, Arlington, VA, and Rockville, MD. See the full list of cities we cover below.