In addition, the service provider may propose applying chemical biocides, designed to kill microbiological contaminants, to the inside of the duct work and to other system components. Some service providers may also suggest applying chemical treatments (sealants or other encapsulants) to encapsulate or cover the inside surfaces of the air ducts and equipment housings because they believe it will control mold growth or prevent the release of dirt particles or fibers from ducts. These practices have yet to be fully researched and you should be fully informed before deciding to permit the use of biocides or chemical treatments in your air ducts. They should only be applied, if at all, after the system has been properly cleaned of all visible dust or debris.

I purchased a Groupon to have the air ducts cleaned at my home by Best Air DC here in Cincinnati. When I called to redeem the deal, I was surprised to learn that I had to make the appointment 5 weeks out because they had no availability. I didn't think much of it since they had the Groupon deal out there. After the service, I've now realized they have deals out on at least 2 other "discount deal" websites. and the funny thing is they have different regular retail values - $229 & $289 value...for the exact same work! They arrived within the time range I was given, and they even called about 20-30 minutes before arrival, so that was appreciated. They arrived and started bringing some equipment - A shop vac (yea, like you can buy at any hardware store), a handheld vacuum cleaner, and large vacuum that came in on wheels. After showing them the locations of all of the vents in the home and cold air returns, the technician (Simon) started going over a few things with me about their plan for cleaning and showing me the dust & dog hair build up in one of the vents. After showing me that, he started to try to up-sell me on additional services. That additional service was to insert a 'brush' that would agitate the dust/pet hair and allow for the vacuum to get everything out of the vents. I was hesitant to have him do that for the price he quoted me. It would have been an extra $275+ for additional cleaning!! I certainly wasn't prepared for that, so I declined the offer. After his assistant started to use the shop vac to get some debris out of the vents, he came back in and said he was just on the phone with the office and he can lower the price of the additional service for me. He wrote up an estimate for me and said that I could call him if I'd like to do the service. After they left, I was feeling uneasy about the quality of work that was performed. I used a camera to get some video of the vents that they cleaned. They looked pretty good, but then I started to remember how they were cleaning them. They only used their large, commercial vacuum on one vent. They also did NOT clean 2 air returns under Negative Pressure like the Groupon said they would. I did a little research and found that they should have cut open an access point in duct work in the basement and sealed up the vents with plastic to create that negative pressure. To make things even more interesting, I called their number this morning to do some investigation on what they actually do. After I revealed to the girl I had the service done a day prior and that my technician, Simon, didn't clean them like it should be done she drops a bomb on me. Simon is actually the owner!! The whole time, he is telling me that he is on the phone with the office to see if the can get me a better price on the additional cleaning, he is basically full of sh!+. An owner doesn't need to do that - he is just pulling a bait & switch on me. A few positives - Simon & his co-worker were very nice. They did clean the vents, but certainly not the way they should have been done. It saved me from getting my shop vac out and getting a little dirty to do it on my own. He gave me a few tips on making sure I get good air circulation to the 2nd floor of my house. Be very careful, and definitely consider going with a different company if you want your air ducts cleaned. They were in & out in a hurry, which leads me to believe they kind of half a$$ed the work. They're just like a restaurant that turns tables so quickly that the service really lacks. Save your $49 or $59 for the discounted deal and put that towards the cost of a company coming out and doing an actual good job.


I had someone out to clean my ducts last weekend. He took a blue bag up in my attic. He came back down in just a few minutes and said I had mold and he even showed me a picture of something saying it was mold but I couldn’t really tell. I refused his service to take care of the mold. He went back up in the attic for a little while and then came down. I never heard any sounds that he was actually up there doing anything. How do I know if he actually cleaned the air ducts?
On the other hand, if family members are experiencing unusual or unexplained symptoms or illnesses that you think might be related to your home environment, you should discuss the situation with your doctor. EPA has published the following publications for guidance on identifying possible indoor air quality problems and ways to prevent or fix them.

In some older homes, there was a grey Mylar flexible duct. After years of use, it started to decompose. A duct cleaning company can come out and find why your air is so dirty and why your building doesn’t heat or cool like it used to. This is a savings on your part. You could also be sucking in Hot, dirty attic air. However, sometimes when a duct cleaning company comes out to clean it, the old duct can be destroyed and have to be replaced. Someone with little experience can replace this ductwork but if it isn’t done right it can ruin a lot of things and cost a lot in repairs.


If you’re concerned about dust, allergens or mold, it may be time to have your air ducts cleaned. The national average cost for air duct cleaning ranges from $190 to $250. Air duct cleaning costs will vary based on a number of factors such as your location in the country, the age and condition of your air ducts, the number of linear feet to be cleaned, and any repairs your ducts may need. HVAC cleaning companies should clearly outline what is included in their services and at what rate, so always make sure you understand and have a written agreement before work begins. Here are some examples of average air duct cleaning costs:

Very interesting article. I searched articles about services for cleaning ventilation systems. But I have some questions. For cleaning ventilation system used special products for cleaning. Can I know in company manager about, which type of cleaning products they use? Your family members may be allergic in some components. It’s very big problem. And one more problem it’s how to choose the right company in Internet. Sometimes I don’t have much time to find a company in my town and I use the Internet. But I find a lot of company. It is very popular services, for example, Stanley Steemer – https://www.stanleysteemer.com/ or my local not very popular service, for example, AllstatesAirDuctPro – http://allstatesairductpro.us/. Can I understand the company is professional or not, only looking through the website? What must I check on the website? Who has helpful information? I will very grateful for your help. Links I add for understanding my problem. They are random and not for advertising.
I received a call from the customer service representative that told me that the package I received was for a "Air Duct Cleaning with deodorizing treatment" and it was not a "Air Duct DEEP Cleaning with deodorizing treatment" and that is where the additional $250 was coming from. They then told me that if I wanted, they could come back out a week later and explain it to me professionally and also blamed Groupon for the posting to be misleading. The rep bragged about their ratings on review sites.
Compared to using a duster or changing out air filters, professional duct cleaning means going through all the many elements of the HVAC system. This includes, but is not limited to, the supply and return air ducts, grilles, diffusers, exchangers, heating & cooling coils, drip pans, fans and the air handling unit. Keeping these maintained means avoid problems like pollen, mold or overt dust buildup. This is definitely a problem you want to avoid.
My vent covers have lots of mildew. They look bad! I live in a very humid climate in a condo. The handyman here has offered to take those down, wash them, sand, & then spray paint them with a mildew resistant paint. He said that he will leave them off overnight to dry. I am wondering if this is safe to breath the AC blowing out into the open all night??. ! Guess it is better than the mildew!?
3/8/2019Thank you for your feedback.  Yes, we were late, and we apologize for that.  Sometimes things happen, unfortunately.  However, it was not no show, no call.  There was a technician in your home today.  He began to take the vents off.  You advised him since they were behind schedule, he would have to leave and the service could not be completed.  He then put the vents on and left.
Hi guys if your not convinced yet that duct cleaning is a waste of time. I’m a HVAC business owner install heaters and air conditioners. Simple facts if you have an old system get a new return air fitted with a filter it will catch all the dirt and dust. If you still have as many do black flecks and stuff coming through it is the lining inside your ducting that has perished. So somewhere you have a hole or very old ducting. If you had rats etc its a hole somewhere. To clean, stick your vacuum in the outlet and push the hose as far as it will go this gets 99% of toys and coins fur and alike. Think about it if the object is not heavy it will come out the duct when unit is on. Service the heaters or air con units but not the ducting. I would go further to say that duct cleaning actually damages the ducting in my opinion.
I purchased one of those Amazon air duct cleaning coupons for 49.99. When the company showed up, they removed the vent closest to the air intake and immediately told me I needed $1800.00 for all new duct work. They said they could not clean the system until new duct work was installed. I thanked them and said I would give them a call. The only call I made was to Amazon to get a refund. I know I didn’t need new duct work. Be careful to not fall for unscrupulous salesmen and their pitches and scare tactics.

I’m having my duct work cleaned this Saturday. Have a coupon for $49 through Amazon. Job normally $249. Had my basement remodeled about 18 months ago. The contractors were very thorough at blocking the vents, as far as I can tell. The offer is for HVAC and dryer vent cleaning. My house is 11 years old. I figured, $49 is not much. I appreciate your tips on not getting talked into any additional service, not to use solvents to clean, the certification information and before and after pictures. Very useful and I’ll be sure that all I spend is the $49 for the voucher.


Definitely would recommend. I just bought a house in the Hyde Park area. It is an older house, but I could tell just by looking at the vents that they had not been cleaned in years. I was having issues with my breathing, so I decided to have them cleaned. You have to schedule pretty far out in advance, but it is because they are very busy. They gave me a time window of 8-11 and showed up right in the middle of that window. I opted for the full cleaning and sanitizing because my vents were that bad. The two guys that cleaned my vents did a great job. He recorded the vents before and after and I could not believe the results. He also showed me what had been caught by my filter and sucked up by the vacuum. Would highly recommend to anyone purchasing a home to have this done.
For more than 60 years Stanley Steemer has been perfecting our hot water extraction method to clean carpet with unparalleled results. Take control of the environment in your home and enjoy a cleaner, healthier living space for your family. Every carpet cleaning is proven to remove an average of 94% of common household allergens. We remove the dirt you can see and the allergens you can't. 
They arrived within the time range I was given, and they even called about 20-30 minutes before arrival, so that was appreciated.   They arrived and started bringing some equipment - A shop vac (yea, like you can buy at any hardware store), a handheld vacuum cleaner, and large vacuum that came in on wheels.  After showing them the locations of all of the vents in the home and cold air returns, the technician (Simon) started going over a few things with me about their plan for cleaning and showing me the dust & dog hair build up in one of the vents.  After showing me that, he started to try to up-sell me on additional services. That additional service was to insert a 'brush' that would agitate the dust/pet hair and allow for the vacuum to get everything out of the vents.

But we don’t recommend hiring a duct cleaner to perform these tasks; too many don’t really know what they’re doing, according to the ratings of duct-cleaning outfits we have collected from local consumers. Consider hiring a top-notch heating and air-conditioning contractor to do this type of work, or pay them to do it during their next service visit. Readers can access Checkbook’s HVAC company ratings through Feb. 28 at Checkbook.org/washingtonpost/ducts.


Hi guys if your not convinced yet that duct cleaning is a waste of time. I’m a HVAC business owner install heaters and air conditioners. Simple facts if you have an old system get a new return air fitted with a filter it will catch all the dirt and dust. If you still have as many do black flecks and stuff coming through it is the lining inside your ducting that has perished. So somewhere you have a hole or very old ducting. If you had rats etc its a hole somewhere. To clean, stick your vacuum in the outlet and push the hose as far as it will go this gets 99% of toys and coins fur and alike. Think about it if the object is not heavy it will come out the duct when unit is on. Service the heaters or air con units but not the ducting. I would go further to say that duct cleaning actually damages the ducting in my opinion.
Be cautious with companies that offer “whole house air duct cleaning,” urges the NADCA. The company may be using unscrupulous tactics to upsell you once they get started. Before any work begins, always clarify in writing what the job entails and what the cost will be. To protect yourself against fraud, read customer reviews and verify that your HVAC cleaning service has applicable licenses and certifications.
So I purchased a Groupon to have this service done on my HVAC. I waited like 3 weeks or so since I was not using the heat or AC and I was in no hurry. So, on the day of my scheduled appointment which was 12noon I get a call from their office at 12:05pm that they are running late and they are 2 hours away...How did they manage to end up 2 hours from my house? Odd. Anyway, the girl tells me that they can't make the appointment today and will have to reschedule 30 days from now. What? 30 days from now? I was expecting perhaps tomorrow or the next day, not 30 days from now. This is extremely poor customer service and poor time management. Their leadership team should be reprimanded or replaced. I don't know how this company can stay in business when their business practices are so disorganized and they cannot even manage a schedule efficiently. I would NEVER recommend this company when they treat the customers so poorly. Their front office person should be retrained or fired since she does not have the skills needed to deal with customers. I would go so far as to fire their Office Manager or perhaps the Manager of this company. Well, at least they did not show up and provide poor service as it appears they did in the other customer reviews.
I had them out to clean the ducts, exhaust fans, and dryer vent in my 54 year-old home yesterday. They showed up a bit early and took their time to ensure that all the grunge was gone. I must say...they really earned their paycheck with this place! The father and son duo worked together to remove and clean the register covers, ream out the ducts and vents with a big furry brush/vacuum unit, and vacuum up the mess. They stated that I had the dirtiest ducts they had encountered in 15 years, and took over two hours to tidy them up, finding nails, copper pipe and assorted detritus and emptying the vacuum bag three times in the process. They were here over 2 1/2 hours, yet charged the fee they had quoted me on the phone, as promised. It was not the cheapest price I have seen, but it seemed fair to me. Interestingly, I had this service performed several years ago, by a cheaper company. Based on the amount of dirt and junk that was removed yesterday, I now have my doubts that the previous company really performed the work. Yes, I checked this time! The owner, John, told me that there is another company working under the same name, so make sure that you are getting the Arizona Air Duct Cleaning Company, father and son team, that is being reviewed here. Not all these companies are honest and do what they claim to!
To find companies that provide duct cleaning services, check your Yellow Pages under "duct cleaning" or contact the National Air Duct Cleaners Association (NADCA) at the address and phone number in the information section located at the end of this guidance. Do not assume that all duct cleaning service providers are equally knowledgeable and responsible. Talk to at least three different service providers and get written estimates before deciding whether to have your ducts cleaned. When the service providers come to your home, ask them to show you the contamination that would justify having your ducts cleaned.
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