Air Duct Cleaning &
Indoor Air Quality Services
We Don't Cut Corners, We Clean Them!
What is involved in the air duct cleaning process?
The standard process relies strictly on mechanical tools and does not include any chemicals. If visual microbial growth "MOLD" is suspected during our inspection, microbial cleaning and treatment is strongly advised, the customers also have the option to hire a third-party industrial hygienist for testing and protocols.
Contact us if you have any questions or if you would like to set up an appointment for an estimate.
An appropriate one air duct cleaning process utilizes a comprehensive source-removal methodology designed to thoroughly extract accumulated debris and contaminants from your HVAC system in strict compliance with NADCA standards.
The mechanical cleaning process it should include the following steps:
- Inspection: A pre-cleaning inspection will determine the best cleaning methods for your HVAC system according to its type and location, ensuring the safety of occupants and workers alike.
- Site Protection: Cover your furniture, floors, and surrounding equipment with plastic or drop cloths to prevent any dust migration or contamination during the service.
- Negative Pressure Setup: We attach a HEPA-filtered, high-velocity vacuum collection machine to the ductwork. This machine runs continuously to establish a constant negative static pressure, ensuring all dislodged debris is captured safely into a containment device and not released into your living space.
- Air Vents Removal: Remove and thoroughly clean all air vents, as this step is crucial and often overlooked by many air duct cleaning companies. Taking out the air vents enables proper cleaning both inside and out, while also providing the technician with access to clean the air duct branches. After the cleaning is completed, ensure that the air vents are reinstalled correctly..
- Mechanical Agitation: Utilize mechanical powered rotary brushes, air whips, pneumatic tools, and high-pressure forward and reverse air sweeping devices inside the ductwork to loosen and push stuck debris toward the vacuum collection source.
- Component Cleaning: In addition to the supply and return main trunk and branch lines, clean the internal components of the air handling unit, including the furnace interior cabinets, blower motor assembly, and the evaporator coil.
- Post-Project Verification: Verify the system is visibly clean according to industry standards, take digital photographs to document the results, and check that the heating and cooling modes function properly before leaving the property.
Is the $99 air duct cleaning a scam?
Yes, the $99 air duct cleaning offers you see are typically a scam. In our industry, these are commonly referred to as "blow and go" companies. They use heavily discounted introductory prices to get into your home, only to show you misleading photos, claim you have severe mold or microbial growth, and dramatically increase the price by thousands of dollars, these tactics are commonly referred to as "bait and switch."
A proper, thorough mechanical cleaning of a single residential HVAC system requires expensive specialized equipment, multiple technicians, and usually takes between 2 to 3 hours to complete according to NADCA Standards. Because of the labor, equipment, and certification costs involved, a legitimate company cannot safely or profitably perform this service for $99.
Consider 2 well-trained technicians earning an average of $25 to $30 per hour each in the DMV area, which is necessary to perform a comprehensive service includes cleaning the supply and return main trunk ducts, branch ducts, all supply and return vents, vent covers, the furnace interior cabinets, the blower wheel, and the evaporator coil using specialized HEPA vacuums and high-pressure tools. This represents only the fundamental labor expenses.
Air duct cleaning scams are widely documented, including coverage by DMV local news channels. You can find videos highlighting these scams in our video library.
We highly recommend ensuring that any company you hire is certified by the National Air Duct Cleaners Association (NADCA) to protect your home and equipment.
Contact us if you have any questions or if you would like to look into scheduling a certified service.
How much does air duct cleaning cost?
The price of air duct cleaning varies based on the size and layout of your HVAC system. Companies utilize various pricing estimation methods, but the most common factors to consider include the following:
- Total number of supply and return registers
- Number of dedicated heating and cooling systems
- Accessibility and location of the heating and cooling system
A thorough mechanical cleaning of a single residential HVAC system demands the use of specialized and costly equipment, requires multiple technicians, and generally takes 2 to 3 hours to complete in accordance with NADCA Standards.
On average, the cost for a complete, certified mechanical cleaning of a residential system in the DMV area ranges from $500 to $800. While you might find lower prices during promotions, be cautious of any air duct cleaning offers below $300; it's important to closely examine the contractor's credentials and reputation, even if they are legally established. Please ensure you obtain a written confirmation of what is included before scheduling the service.
Contact us if you have any questions or if you would like to look into scheduling a certified service.
What is involved in mold duct and vent cleaning?
The HVAC mold mitigation and duct cleaning process should be systematically organized to ensure comprehensive cleaning of the system while addressing microbial growth, in accordance with NADCA Standards.
The detailed process should encompass, at a minimum, the following step-by-step procedures:
-Site Inspection: A pre-cleaning inspection will determine the best cleaning methods for your HVAC system according to its type and level of microbial contamination, ensuring the safety of both occupants and workers. During this inspection, we also evaluate any cleaning protocols provided by the customer or an independent industrial hygienist.
- Site Protection: Implement engineering controls for containment, furniture, floors, and nearby equipment should be with plastic or drop cloths to prevent dust migration or contamination during the service.
Negative Suction Setup: Create a standard access opening in the main duct to attach a large hose connected to our industrial-size HEPA collection vacuum. This puts the system under continuous negative pressure, which centralizes suction and limits dirt, debris, and spores from entering your breathable indoor air space. All supply and return registers are closed off or covered to maximize this centralized suction.
- Mechanical Duct Cleaning: While under negative pressure, we clean all supply and return main trunk ducts, branch ducts, and vents. We use a combination of three distinct tools to break loose and pull out all contaminants: high-pressure forward/reverse air sweeps, mechanical rotary brushes, and HEPA contact vacuums.
- Air Handling Unit Cleaning: We thoroughly clean the interior of the furnace or air handler cabinet, the blower fan assembly (including the motor, housing, and blades), and the evaporator coils using HEPA vacuums and specialized brushes. The condensate drain pan, which is a primary source for moisture and mold, is also cleaned and disinfected.
- Antimicrobial Treatment: Once the mechanical cleaning is complete, we fog the entire supply and return ductwork system with an organic EPA-registered solution. This targeted mist eliminates floating microbial spores and disinfects the internal components. Because it is a botanical solution, it is human- and pet-safe, but it is highly recommend that all occupants and pets leave the property for a period of time or follow the recommendations of the manufacturer of the product to be applied.
- System Closure and Verification: All access openings made in the sheet metal are sealed airtight using industry-standard sheet metal plates, screws, and professional-grade foil tape.
- Post-Project Verification: Confirm that the system meets visible cleanliness standards as per industry guidelines, and take digital photographs to document the results. Additionally, verify the proper functioning of both heating and cooling modes prior to leaving the property. If a clearance is part of the project, all engineering controls must remain intact until the independent industrial hygienist has and completed the test.
In certain situations, additional activities may be required to ensure success in HVAC microbial cleaning projects. Here are a few examples:
- Fiberglass Encapsulation Coating: If parts of your duct system are constructed of porous fiberglass material, such as a duct board box or internal insulation, we do not clean them without applying a specialized antimicrobial coating immediately afterward. This coating encapsulates the dense areas of growth and prevents dangerous fiberglass shards or treated mold residues from becoming airborne when the system turns back on.
- Flexible duct Replacement: Replace a flexible type of ductwork may be necessary; this material consists of a plastic inner liner reinforced with a spiraling steel wire coil. Aggressive cleaning is not advisable, and if visible microbial growth is present, replacement is recommended according to the standards.
Contact us if you have any questions or if you would like to set up an appointment for an estimate.
What causes mold in HVAC ducts and vents?
Based on our industry training and field experience, indoor mold growth within HVAC ducts and vents is primarily driven by a combination of specific environmental factors:
- Moisture: This is the primary factor limiting indoor mold growth. Mold spores typically require materials to remain wet or exposed to high humidity for 48 to 72 hours to actively reproduce. Common moisture sources include disconnected ductwork causing condensation in attics or crawl spaces, elevated relative humidity, and accumulation in the HVAC condensate drain pan.
- Spores and Oxygen: Fungal spores are ubiquitous in both indoor and outdoor environments and travel easily through the air. When these spores land on a nutrient-rich surface with sufficient oxygen and moisture, active growth occurs.
- Nutrients: Mold relies on organic substrates as a food source. In an HVAC system, this is generally supplied by the natural build-up of dust, dander, and debris inside the ductwork or on the evaporator coils.
Although the first signs of mold appear on the air vents, the real problem is within the HVAC system. During the hot, humid summers in the DMV area, this system generates considerable humidity through condensation, fostering an environment filled with organic nutrients that can draw in outside mold spores when doors or windows are opened.
Mold growth within HVAC systems typically generates a noticeabley or earthy smell because of volatile organic compounds. The most crucial step in effectively controlling microbial growth is to and eliminate the source of nutrients.
Contact us if you have any questions or if you would like to set up an appointment for an estimate.
How often should I clean my air ducts?
The National Air Duct Cleaning Association (NADCA) recommends having your air ducts professionally inspected and cleaned every two years. Regular cleanings help maintain optimal indoor air quality and ensure the efficient operation of your HVAC system.
Depending on specific conditions, you may want to consider cleanings more frequently. For instance, if your property has experienced water damage, visible mold or biological growth, or if you have recently undergone a home renovation with heavy construction dust, an immediate inspection and cleaning is highly recommended to protect your living space.
People who are highly allergic to or dust mites can greatly benefit from having their air ducts cleaned at least every two years, but this is only effective if performed by a qualified and certified professional company.
Contact us if you have any questions or if you would like to set up an appointment for an estimate.
What makes A Plus Enviro-Services different from other duct cleaners?
A Plus Enviro-Services stands out from other companies because we are a NADCA certified company, meaning all of our work strictly complies with the professional standards set by the National Air Duct Cleaners Association, as well as EPA and OSHA guidelines.
With over 20 years of experience in the air duct cleaning industry serving the DMV area, we have thousands of satisfied customers. Whether it's a single apartment or a home with 8 HVAC systems, and from crawl spaces to attics, we've seen it all. In addition, we have completed a large number of commercial facilities, ranging from a small coffee shop to the Library of Congress.
We use a comprehensive "source removal" mechanical cleaning technique that combines high-capacity HEPA collection machines (99.97% efficiency down to 0.3 microns), mechanical rotary brushes, and high-pressure air sweeping tools to completely dislodge and extract foreign matter without releasing debris into your home or property. Our standard process includes thorough cleaning of the supply and return main trunk ducts, branch ducts, vents, furnace interior cabinets, blower assemblies, and evaporator coils.
Additionally, we handle extensive specialized microbial remediation and anti-microbial treatments jobs. Unlike companies that only perform standard vacuuming, we are equipped to address advanced needs like fiberglass ductboard cleaning and specialized resurfacing treatments to properly manage severe mold or air quality issues.
Contact us if you have any questions or if you would like to set up an appointment for an estimate.