How Air Ducts Are Cleaned?


Cleaning Air Ducts Yourself: Do the Risks Outweigh the Rewards?

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When the HVAC system’s air ducts, registers, and grilles are cleaned, it restores the system’s efficiency and helps maintain a healthy indoor environment. The accumulation of dust, debris, mold, and other pollutants in air ducts may have a negative impact on indoor air quality, so having them cleaned regularly is important.

Asthma, allergies, and other respiratory difficulties are only some of the health concerns that may be triggered by polluted indoor air. In addition to lowering the efficiency and shortening the lifetime of the HVAC system, dust, dirt, and other impurities may raise utility costs.

Air ducts should be cleaned regularly to help lower indoor pollution levels and raise IAQ. It may also aid in enhancing the HVAC system’s performance and efficiency, which in turn can lead to reduced energy consumption and extended appliance life. In addition, if there are any problems with the HVAC system, these may be discovered during the cleaning of the air ducts up to the end where air ducts are cleaned which will allow for quick repairs and maintenance. Maintaining a pleasant and healthy home climate is impossible without regular air duct cleaning.


Tools and Materials That You Need To Clean Air Ducts 


In order to clean air ducts, experienced HVAC technicians may utilize the following equipment:


Inspection Equipment: 

This equipment helps personnel check the air ducts for problems and see where cleaning is needed. Borescopes, video cameras, and mirrors are only some of the gear that may be used for examination.


Brushes and Air Whips: 

Dust, dirt, and other impurities in the air ducts may be loosened with the use of brushes and air whips. These tools are available in a wide range of sizes and forms to cater to the wide variety of duct configurations.


High-Powered Vacuum: 

Using a high-powered vacuum fitted with HEPA filters, the debris, dust, and pollutants that have been displaced from the air ducts may be extracted. The dust and dirt are sucked up by the vacuum and not discharged into the building.


Compressed Air: 

Blowing Out Debris And Dust From The Air Ducts With Compressed Air. Fine particles that are difficult to remove with brushes and vacuuming are no match for this device.


Sanitizing Agents: 

Sanitizing chemicals are used to sterilize the air ducts and get rid of any lingering mold, mildew, or bacteria. These compounds aid in keeping the air ducts clean and clear of potentially hazardous debris.



To avoid further contamination and boost the HVAC system’s performance, a sealant may be applied to fill up any cracks or holes in the air ducts.

It’s worth noting that different HVAC systems, different levels of pollution, and different technicians’ preferences might all call for different sets of instruments. In order to clean air ducts efficiently and safely, HVAC professionals employ specialized equipment and tools. If you want clean air ducts, you need to hire an HVAC specialist that has the education, expertise, and tools for the job.

Step By Step Process On How To Clean Air Ducts 


1. Prepare What Is Needed

HVAC System Inspection: In order to determine the extent of pollution and locate possible problems, the technician conducts an inspection of the HVAC system.


Power Off: The HVAC system’s electricity is turned off before the cleaning procedure begins for safety reasons.

Floor and Furniture Protection: To avoid harm and control the waste, the technician lays down protective materials on the floor and covers the furniture in the work area with drop cloths before beginning the cleaning procedure.


2. Get Access 

Supply and Return Register Removal: The technician accesses the air ducts by removing the covers or grilles from the supply and return registers.

Access Hole Creation (if necessary): If there aren’t any easily reached registers, the technician may need to cut a hole in the ducting using special equipment.


3.  Tidying Up

Brushing and Agitation: The expert will use air whips and specialized brushes to agitate the air ducts and release the dust, dirt, and other impurities that have settled within. Scrubbing the duct walls and stirring up the debris to loosen it may be necessary.

Vacuuming: After debris, dust, and pollutants have been dislodged from the air ducts, they are extracted using a high-powered vacuum fitted with HEPA filters. The dust and dirt are not allowed to float about the house thanks to the vacuum.

Air Handler Unit Cleaning: The technician may also clean the air handler unit, which includes the blower fan, coils, and other components, using the proper cleaning strategies and equipment.


4. Sanitize

Sanitizing Agents Application: Technicians may also use sanitizing solutions to spray the interior of the ductwork in an effort to kill any leftover bacteria, mold, or other potentially hazardous microorganisms.

Sealant Application: The specialist may apply a sealant to the air duct’s inside to help stop the formation of mold, mildew, and bacteria in the future.


5. Reassembly 

Filter Replacement: After the expert has cleaned the filters, he or she will replace them with new, clean filters.

System Reassembly:  The last step in HVAC maintenance is reassembly, during which the technician replaces missing parts and reseals any previously uncovered openings, such as supply and return registers.

System Testing: Before leaving the project site, the technician performs a series of checks on the HVAC system to verify it is working correctly.


6.  Cleaning Time 

Work Area Cleanup: After completing any cleaning tasks, the technician will clean up the work space by disposing of any waste products, dirt, and tools.

It’s worth noting that the HVAC system and the degree of pollution will determine the precise processes and methods to be used. To guarantee efficient and risk-free air duct cleaning, it is essential to hire a competent HVAC specialist.


How Technicians Access Air ducts?

The supply and return registers, or a fabricated access hole, are the means by which service technicians gain entry to the air ducts.


Stock and Receipts Books:

Air conditioning and heating systems distribute conditioned air via supply registers. The HVAC system receives fresh air via return registers. When the grilles or coverings are removed, technicians have access to the ductwork. After the grilles or coverings have been removed, the air ducts are cleaned using specialist equipment.


Access Hole: 

Technicians may need to cut a hole in the wall to get access to the ductwork. When no other option exists, the ducts must often be accessed in this manner. The technician will make an opening in the ducting and secure it with a panel that can be quickly removed if maintenance is ever required. It’s common practice to drill access holes in obscure places like the attic or a closet.

It might be difficult to get access to the air ducts if the ductwork is concealed in the walls or ceilings. The only way to ensure that your air ducts are cleaned in a safe and efficient manner is to employ a professional HVAC specialist.


Frequently Asked Questions: FAQs 


When should you clean your air ducts?

Indoor air quality, the kind of heating, ventilation, and air-conditioning (HVAC) system, and the degree of pollution are all variables. Air ducts should be cleaned every 3–5 years at the absolute least. More regular cleaning may be required, however, if mold development, insect or rodent infestations, or respiratory disorders among family members are concerns.


In what time frame should air ducts be cleaned?

The size of the HVAC system, the amount of pollution, and the number of ducts are all variables in how long it will take to clean the ducts. Cleaning air ducts may take anything from two hours to six hours.


Can the quality of air within be enhanced by cleaning the air ducts?

Indoor air quality may be enhanced with air duct cleaning since it eliminates dust, debris, and other pollutants. This may lessen the number of particles floating about within, which can aid those who suffer from asthma and other breathing problems.


Is it risky to get the air ducts cleaned?

If done by a qualified HVAC expert with the right tools, cleaning air ducts is safe. Air ducts are cleaned thoroughly and safely with the use of specialist tools and procedures.


What’s the going rate for a thorough cleaning of the ducts in my home? 

Variables including HVAC system size, number of ducts, degree of pollution, and geographic location all affect how much it will cost to clean the ducts. Air duct cleaning might cost $300-$1000 on average. The price may be greater or cheaper than expected, however, depending on the details of the case. If you want a reliable estimate, it’s best to consult a professional HVAC specialist for a quotation.


Final Words

The interior environment, energy efficiency, and general effectiveness of HVAC systems may all benefit from regular air duct cleaning. Heating, ventilation, and air conditioning (HVAC) workers have specific equipment and training to clean air ducts thoroughly and safely. 

Cleaning air ducts include checking them for damage, then brushing, cleaning, and disinfecting to get rid of dust, debris, and other impurities. If the ducts have any cracks or leaks, a sealant may be used to fix them. The expense of having your air ducts cleaned by a professional may range from moderate to high, depending on a number of variables. Cleaning your air ducts regularly may help you maintain a clean, comfortable, and energy-efficient house. Talk to an HVAC specialist for an honest opinion and advice if you’re thinking about having your air ducts cleaned.

Still looking for more articles to read? You can click one of these:

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Written By: Trisha Mae Raymundo 


Air Ducts Are Cleaned?
Mikalya Smith
Mikalya Smith

Cleaning expert and the head of content in cleanz. She has tremendous experience with cleaning methods and techniques.