By Katie Flannery and Evelyn Auer | Updated Nov 29, 2023 2:45 PM
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Air ducts help circulate warm or cold air into a home from its HVAC system, but along with that air is plenty of dust and dirt. According to the Environmental Protection Agency (EPA), most of the dust and dirt inside air ducts adheres to the sides of the home’s air ducts and doesn’t necessarily enter the home where it can be breathed; however, a build-up of dust and dirt can eventually affect the air quality in the home. The EPA recommends that duct cleaning is needed when there is visible mold growth within the air ducts or on other sections of the heating and cooling system. Some other important reasons to consider air duct cleaning are if the ducts show evidence of an insect or rodent infestation; if the ducts are visibly clogged with dust, dirt, and debris; or if dust and particulates are being released into the living space where they can be inhaled.
According to Angi and HomeAdvisor, the cost to clean air ducts can range from $268 to $492, with the national average at $379. Not sure how often to clean air ducts? It’s recommended that air duct cleaning be done as needed, or every 5 to 7 years; homes with multiple pets or allergy-prone residents will likely need more frequent air duct cleaning. Some factors that affect overall air duct cleaning costs are the state of the duct system, the size of the ductwork, the ease of duct system access, and the number of vents. It’s recommended that the cleaning service attend to all components of the air duct system, including the blower, heat exchanger, drain pan, coils, and plenum.
There are several factors that affect overall air duct cleaning costs. Prices can differ from the national average due to the size and type of ductwork, the number of vents, contamination level, accessibility, local labor costs, and geographic location.
Air duct cleaning costs depend on the ductwork size. Air duct cleaning professionals typically charge by the vent or by the square foot, and duct cleaning costs approximately $25 to $50 per vent. To find out the average price, homeowners can count each duct and multiply by $35. Each vent connects the HVAC system to each room via ducts. If the professional charges by the square foot, it will cost about $0.15 to $0.30 per square foot. The ductwork cleaning cost for a 1,500-square-foot house can run between $225 and $450 on average. Some air duct cleaning companies may also charge by the system.
There are different materials, tools, and cleaning methods for foam board, fiberglass, flex, or rigid ducts. Foam board or fiberglass ducts can be cleaned with contact vacuuming, air washing, or power brushing. Flex ductwork requires specialized equipment, and not every company may offer the service. Rigid ductwork is more straightforward to clean, and virtually every duct cleaning company will offer the service.
Air duct vent cleaning can average between $25 and $50 per supply vent, or an average of $35 per vent. Price estimates can be arranged according to four different pricing methods.
In addition to dust, air ducts can contain contaminants such as animal dander and waste, dust mites, mold spores, pollen, mildew, and bacteria. The level of contamination of the air duct system will determine the price range for duct cleaning. The more contaminated the ductwork, the more time it will take to clean.
Many homes have entry points in the basement or utility room that provide easy access to the air duct system. There may be an extra charge if there are difficult-to-reach areas in the attic or tight crawl spaces. The overall cost will vary depending on the location, the air duct cleaning company, and project scope.
The cost to have air ducts cleaned and serviced can range depending on the company. Some of the most common national services charge between $200 and $1,000 including labor, but these prices can also be affected by factors like location and the size of the home. The best-known air duct cleaning companies and their average costs are as follows:
Many ductwork cleaning companies will charge by the vent or by the square footage of the home. Some companies charge an hourly rate, often $90 to $125 per hour. They will assess the contamination level of the air duct system, the system size, the air handler location, and accessibility to determine the time it will take to clean.
Geographic location also impacts air duct cleaning costs. The cost of labor and material can vary in different locations around the country or even within the same state, and that can trickle down to the customer when it comes to paying for air duct cleaning. Customers can research “air duct cleaning near me” to get an idea of local prices.
When budgeting for air duct cleaning costs, there may be additional price factors and considerations. While the average cost of air duct cleaning is $379, additional expenses like HVAC inspection costs and repair costs to more significant charges like the cost of pest control, mold remediation, or asbestos removal can drive up the price.
Air duct inspection costs range from $70 to $130. Some companies will apply the cost of inspection toward the cleaning if the same service is used. A camera is used to inspect the ductwork and check for pests, damage, debris, mold, insulation issues, and dust buildup. It’s recommended that homeowners have air ducts inspected at least once per year.
It costs around $200 to $800 to repair air ducts depending on the severity of the damage. Air duct cleaning professionals may recommend furnace repair if they observe damage to the blower motor or heat exchanger. Furnace repair costs $130 to $500, and air conditioning repair costs $160 to $600 on average. Custom ductwork may cost more to repair or replace since it’s more difficult to find replacement parts.
The more furnaces and air-conditioning units there are in a house, the more it will cost to clean the air ducts. Each additional furnace will add $400 to the cost of furnace duct cleaning. Although it’s not common for homes to have more than one furnace, a second furnace is often found in homes with additions where the original furnace was not powerful enough to heat the entire space.
Sometimes, air vents can become contaminated by pests, mold and mildew, or asbestos. If the air duct cleaning professional finds the presences of any contaminants in the ductwork, there will be an additional charge for removal.
Homeowners can expect to pay 25 to 30 percent more for custom-designed ducts. The job will take longer than cleaning stock ductwork since the cleaning professionals need to take their time and make sure they do the job right. Custom ductwork increases the labor cost and may require specialized tools or techniques.
Air duct sanitizing involves spraying an antibacterial disinfectant into the ductwork. The EPA, insulation experts, and air duct professionals acknowledge that moisture should not be inside fiberglass-lined ductwork. If the mold and mildew problem is severe, the air duct cleaning professionals may suggest a specialist to take care of the job. Some duct cleaning companies automatically include sanitizing as part of their service, but otherwise sanitizing may cost an additional $100 to $250.
In-duct air purifiers are designed to catch allergens, dust, and pollutants before they are circulated throughout the home via the air ducts. This can greatly improve indoor air quality and is especially helpful for homeowners who have breathing issues or conditions such as asthma. Most in-duct filters cost about $40 to $60 apiece. A Minimum Efficiency Reporting Value (MERV) rating measures how effectively a filter can capture small particles. It’s recommended that filters for an in-duct air purifier have a MERV rating of 6 to 12.
The inspector may suggest a video inspection to determine the condition of the home’s air ducts; this costs $70 to $130 and may be offered as part of an annual HVAC cleaning and inspection bundle. General HVAC service costs $75 to $200. Companies that clean air ducts will typically charge in one of three ways: a flat rate, per vent, or per square foot. Some air duct cleaning companies will have a package rate based on the total number of vents or square feet, and others will charge based on the individual needs of the HVAC system.
A furnace or air-conditioning unit may need to be repaired if an AC duct cleaning professional detects damage. The cost of a furnace tune-up or repair may be between $100 to $200 and the cost to repair an air-conditioning unit is $350 on average. If the air ducts are damaged, homeowners can expect to pay $200 to $800 in repair costs.
Dryer vent cleaning is an important annual maintenance task as clogged vents are a fire hazard and can decrease the home’s energy efficiency. Many HVAC companies also maintain and install dryer vents, so it is typically possible to find a professional who offers both air duct and dryer vent cleaning services. Otherwise, one of the best dryer vent cleaning companies (such as Window Gang or Stanley Steemer) can also take care of this job. On average, dryer vent cleaning costs $100 to $170. This cost will be closer to $100 if the service is included with annual duct cleaning.
There is more than one type of air duct, and some varieties are easier to clean than others. It’s a good idea for homeowners to inform services of what kind of ductwork their home or building has and ensure that they know how to clean air ducts of this variety before hiring their services.
Flex ducts, which resemble dryer vents, are flexible pipes that are able to be fitted around plumbing and tight corners more easily than traditional ductwork. Flexible ducts can be cleaned, but because they are more delicate than regular ductwork they require the careful touch of a professional.
Rigid ductwork is more expensive to install than flexible ducts, but it is also less prone to damage during cleanings. It is also the most common type of ductwork. For this reason, rigid ductwork tends to last longer than flex. Some common issues with rigid ductwork include moisture and mold accumulation, but these can be kept at bay with regular cleaning and inspections.
Most common in commercial buildings, fiberglass-lined ductwork provides more insulation and noise reduction than other materials. In some cases, the fiberglass lining can begin to break down, which is an air quality hazard. However, regular vacuuming or power brushing by a professional should prevent this issue as well as other common problems like excess moisture.
Many homeowners have a long list of home maintenance tasks. Those costs can add up, so it’s understandable that some may wonder, “Is air duct cleaning a waste of money?” While some homeowners might look for reasons to skip air duct cleaning, it’s recommended that HVAC duct cleaning be done as needed or if there is visible dirt, dust, debris, mold, insect infestation, or rodent droppings. The EPA supports residential air duct cleaning if the dust and debris are being released into the home.
If a homeowner is wondering, “Why is my house so dusty?” and there is visible dust or debris that exits a vent any time the air is turned on, this is a clear sign that the air ducts are past due for cleaning. Not only will the dust be spread throughout the home, but clogs can also decrease the system’s efficiency by preventing air from flowing freely.
It is generally recommended to replace air filters once every 3 months or as recommended by the unit manufacturer. If the home’s air filters become clogged after just a week, the air ducts will more than likely need to be cleaned.
If an air duct has excessive dust, mold, or mildew, residents may notice a musty smell whenever the air conditioning kicks on. Homeowners will want to pay attention to when musty smells appear or take a whiff next to the registers to find out if the problem is the duct system.
An air duct that is clean and in good working order will not make an excessive amount of noise. If the sound of the motor is accompanied by other unusual noises, it is a good idea for a homeowner to have an air duct technician perform an inspection.
Mold and mildew in the air can be detrimental to anyone’s health, but those with compromised immune systems or allergies may suffer even more. If there is visible mold in or around vents and ductwork, it is wise for a homeowner to have one of the best mold removal companies, such as ServiceMaster Restore or ServPro, take care of this immediately to avoid spreading spores throughout the home.
Pests like mice and rats don’t just hang out in the attic or pantry—they may also find their way into a home’s ductwork. This is an urgent problem, as animals can both damage the ductwork and leave behind waste that contaminates the home’s air quality. Homeowners will want to consider paying the cost of mice extermination as the problem may be compounded the longer it goes on.
Airflow that is inconsistent from one room to the next is likely a sign that the home is in need of air duct maintenance. An inspection can reveal the source of the problem and can determine whether repairs or cleaning are needed in order to regulate airflow again.
Clogged air ducts run inefficiently, which can significantly drive up energy costs. If a home’s energy bills have been consistently high for seemingly no reason, scheduling an air duct cleaning is one of the first things homeowners will want to try to remedy the issue.
Dirty air ducts don’t just harbor dust, but also mold, pollen, and other allergens. If someone in the home is experiencing heightened allergy symptoms, it may be because these spores and particles are being emitted from the air ducts.
Construction produces a large amount of dust, which can find its way into the air ducts. Brand-new homes or houses that have recently undergone construction will need to have their air ducts cleaned once the project is finished.
Those with allergies and severe respiratory illnesses may benefit from air duct cleaning. Some advantages of air duct cleaning are health benefits, improved system performance and airflow efficiency, extension of the HVAC lifespan, and possible odor elimination.
Dirty or dusty ducts don’t necessarily mean the air inside of a home is unhealthy. Still, for those with allergies, asthma, or autoimmune disorders, contaminants in the ductwork may cause irritation or illness. The ductwork inside a home may distribute contaminant particles throughout the home. If this is the case, air duct cleaning will aid in cleaner air circulating throughout a home.
Ductwork with a heavy buildup of dust and debris may prevent adequate airflow and impede smooth system performance. The HVAC system will have to work harder to get air through the ducts, which will decrease energy efficiency. A clean system that’s clear of dirt and dust will run smoothly and provide an energy-efficient and cost-effective circulation of air throughout the home.
A dirty HVAC system will put unnecessary wear and tear on the entire system, which may cause it to break down. It may be possible to avoid costly repairs or untimely replacement with a clean HVAC system.
Pets, tobacco smoke, cooking odors, dirt, dust, and mold can contribute to stale smells throughout a home. When a furnace or air conditioner runs, it will redistribute the unpleasant odors through the house. A dirty air duct system will add to any unpleasant smells that are present. By removing any odor-causing particles, air duct cleaning will result in a fresher-smelling home.
It is not recommended for homeowners to clean air ducts as a DIY project. A professional air duct cleaning service will have the special equipment and air duct cleaning tools needed to properly clean the ductwork thoroughly. Improper DIY air duct cleaning can cause damage to the ductwork, lining, insulation, and connections within the HVAC system. A licensed, professional cleaner has the correct rotary brushes, high-powered vacuums, and other air duct cleaning machines to do the job right. A professional will clean all parts of the system, including the grilles, supply and return ducts, exchangers, diffusers, fans, drip pans, and the air handling unit. This takes time and expertise to know how to clean the ducts and not make the air quality worse. If an air duct system is improperly cleaned, it can stir up dust, pollen, debris, and other particulates that are released into the home. Homeowners will want to hire one of the best air duct cleaning services such as Stanley Steemer if there is visible mold or if there are insulated ducts that are difficult to access, dust and debris clogging the ducts, rodent droppings, or if construction has recently been done on the home. Home renovation produces large amounts of dust and debris, and it can get inside the ductwork and recirculate inside the home.
Home air duct cleaning costs can be high, and the additional costs associated with the project can quickly add up. However, air duct cleaning can save money in the long run, so it may be worth it for certain homes.
Asking a professional the right questions about air duct cleaning costs can minimize miscommunication, save money, and get the desired results. The following are some questions homeowners can ask an air duct cleaning professional before hiring them.
Deciding on air duct cleaning while staying within a strict budget can be a daunting process. What follows are some frequently asked questions about air duct cleaning costs to help guide homeowners through the process.
The EPA recommends air ducts be cleaned if they are contaminated with large amounts of dirt, dust, and debris; if there is visible mold; or if there is a rodent or insect infestation. It’s generally recommended that homeowners have their air ducts cleaned every 5 to 7 years or as necessary.
Air ducts will need to be cleaned in any of the following scenarios:
Air duct cleaning can remove mold, but cleaning may not always remove 100 percent of mold. If the issue is severe, a homeowner will want to call a mold remediation professional to remove and prevent the recurrence of mold within the ductwork.
Air duct cleaning can take anywhere from 2 to 5 hours, depending on the size of the home and the amount of ductwork.
It is generally recommended for a professional to clean air ducts to avoid damage and injury. Some states even require a license for this work. Homeowners may, however, replace their filters themselves.
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