Professional Duct Cleaning & Sealing for Better Airflow

Your ductwork is the hidden highway that carries heated and cooled air throughout your home. Over the years, ducts accumulate dust, debris, allergens, and even mold, while joints and connections develop air leaks that waste energy and reduce comfort. HVAC of Virginia provides professional duct cleaning and sealing services for homeowners in Manassas, VA and Northern Virginia, helping you breathe cleaner air and get the most from your HVAC system.

Why Your Ducts Need Attention

Most homeowners in Manassas rarely think about their ductwork because it is hidden behind walls, above ceilings, and under floors. Out of sight usually means out of mind. But your duct system plays a critical role in both your indoor air quality and your energy bills, and neglected ducts can cause significant problems.

Every time your HVAC system runs, air circulates through your ducts and past any contaminants that have accumulated inside. The average home generates about 40 pounds of dust per year, and a significant portion of that dust ends up in your ductwork. Add pet dander, pollen, cooking residue, and the occasional mold colony, and your ducts can become a major source of indoor air pollution.

Duct leaks are equally problematic. The U.S. Department of Energy estimates that the average home loses 20 to 30 percent of its conditioned air through duct leaks. That means if you are paying $200 a month for heating and cooling, up to $60 of that is being wasted on air that never reaches your living spaces. Leaky ducts in unconditioned spaces like attics and crawlspaces are the worst offenders, pulling in hot attic air in summer and cold air in winter.

Our Duct Cleaning Process

HVAC of Virginia follows the standards established by the National Air Duct Cleaners Association to ensure thorough, professional results. Our duct cleaning process is comprehensive and designed to remove contaminants without damaging your ductwork.

Video Inspection

Before we begin cleaning, we insert a small video camera into your duct system to assess the current condition. This allows us to identify the level of contamination, check for mold, spot any damage to the ductwork, and document the before condition for comparison. You are welcome to watch the inspection on our monitor.

Source Removal Cleaning

We use powerful HEPA-filtered vacuum equipment to create negative pressure in your duct system, preventing dislodged contaminants from entering your living spaces. Our technicians use specialized tools including rotating brushes, air whips, and compressed air nozzles to agitate and dislodge debris from the interior surfaces of your ducts. The vacuum system captures everything, including fine particles that would otherwise become airborne.

We clean all supply ducts, return ducts, the main trunk line, branch lines, and register boots. The air handler cabinet, blower compartment, and evaporator coil housing are also cleaned as part of our comprehensive service.

Sanitization

After cleaning, we can apply an EPA-registered antimicrobial treatment to your duct system if testing indicates mold or bacterial contamination. This treatment helps prevent future microbial growth and provides an additional layer of protection for your indoor air quality.

Professional Duct Sealing

Duct cleaning addresses the contamination inside your ducts, but duct sealing addresses the air leaks that waste energy and reduce comfort. HVAC of Virginia offers two proven methods of duct sealing for Northern Virginia homes.

Mastic Sealant Application

For accessible duct joints and connections, our technicians apply professional-grade mastic sealant by hand. Mastic creates a permanent, flexible seal that will not crack, peel, or deteriorate over time like duct tape does. We seal all accessible joints, connections, and seams to minimize air loss.

Aeroseal Technology

For ducts in walls, ceilings, and other inaccessible locations, we use Aeroseal duct sealing technology. This innovative process seals leaks from the inside by injecting a fine sealant mist into the pressurized duct system. The sealant particles naturally accumulate at leak points and build up to create a lasting seal. Aeroseal can reduce duct leakage by up to 90 percent and reaches leaks that are impossible to seal by hand.

Signs Your Ducts Need Service

How do you know if your ducts need cleaning or sealing? Several common signs indicate it is time to call HVAC of Virginia. If you notice excessive dust on your furniture despite regular cleaning, it may be coming from dirty ducts. Musty or stale odors when your HVAC system runs can indicate mold or microbial growth inside the ductwork. Uneven temperatures between rooms often point to duct leaks that are diverting conditioned air to unconditioned spaces.

If you have recently completed a home renovation in the Manassas area, construction dust and debris almost certainly entered your duct system and should be cleaned out. Visible dust or debris around your supply registers is another clear indicator. And if your energy bills seem higher than they should be, duct leaks could be a significant contributing factor.

Serving Manassas and Northern Virginia

HVAC of Virginia serves homeowners throughout Manassas, Gainesville, Haymarket, Bristow, Centreville, Woodbridge, and all of Northern Virginia with professional duct cleaning and sealing services. Whether your home is a newer construction with flex duct or an older property with sheet metal ductwork, our technicians have the experience and equipment to deliver thorough, effective results.

Ready to improve your indoor air quality and HVAC efficiency? Call HVAC of Virginia at (703) 555-0123 to schedule your duct inspection. We will show you exactly what is in your ducts and recommend the right combination of cleaning and sealing services for your home.