How to Compare Air Duct Cleaning Quotes
Air-duct-cleaning quotes are often not competing prices for the same service.
One quote may come from an established, insured air-duct-cleaning company with trained technicians, professional vacuum-collection equipment and a complete source-removal process. Another company may arrive with a shop vacuum, a short hose or a rotary-brush machine, clean only what it can reach near the register openings and describe that as cleaning the supplies, returns and main trunk lines.
Those are not two prices for the same job. They are two entirely different services with different capabilities and likely different results.
The first question should not be, “Which total is lower?”
It should be, “Are these companies actually equipped and qualified to perform the same work?”
A Written Scope Does Not Prove the Work Will Be Performed Properly
Most air-duct-cleaning companies know the terminology homeowners expect to hear. They may say that the price includes the supply ducts, return ducts, branches and main trunk lines.
That sounds complete—but the words on the quote do not clean the ductwork.
The company, technicians, equipment and cleaning method determine whether the entire accessible system is actually cleaned.
A contractor can say that it cleans every supply branch while reaching only the first foot or two from each register. It can say that it cleans the main trunk while lacking the access or collection equipment needed to remove accumulated material from that trunk. It can loosen debris without maintaining enough negative pressure to capture and remove it effectively.
If material is disturbed without proper containment and collection, some of it may remain inside the system or be released into the occupied space. That is not professional source-removal cleaning.
Before comparing totals, find out what the contractor is physically capable of doing.
What Equipment Will Actually Be Used?
This is one of the most important questions a homeowner can ask—and one of the most frequently overlooked.
A consumer shop vacuum connected at a register is not capable of placing the connected duct system under continuous negative pressure. It may remove material immediately behind the opening, but it cannot serve as the primary collection system for complete HVAC air-duct cleaning.
Duct Doctor also does not use rotary-brush duct-cleaning systems as its cleaning method. Turning a brush inside a duct is not a substitute for high-volume negative-pressure collection, proper access and cleaning the full connected duct run.
Professional source-removal cleaning requires two coordinated functions:
The contaminants must be loosened from the interior surfaces of the ductwork.
The loosened material must be captured and transported out of the HVAC system.
According to NADCA’s proper cleaning guidance, the HVAC system should be placed under negative pressure while appropriate agitation tools are used to dislodge contaminants. The negative pressure helps prevent loosened material from escaping into the occupied area and carries it to the collection equipment.
Duct Doctor of Southern New Jersey uses a purpose-built, truck-mounted vacuum-collection system designed to move approximately 10,000 cubic feet of air per minute through its filtration system. The equipment places the connected portions of the HVAC air-distribution system under continuous negative pressure while technicians clean the system from appropriate access points.
Our technicians then use compressed-air tools, specialized agitation equipment, HEPA-filtered equipment where appropriate and other tools selected for the particular duct system being cleaned.
The airflow rating alone does not guarantee a proper job. The vacuum must be connected and configured correctly, the system must be accessed properly, contaminants must be dislodged throughout the duct runs, and the complete agreed-upon scope must be performed. But without suitable collection equipment, the contractor may not have the capability to do the job it is describing.
Is the Company Properly Established, Insured and Qualified?
Before evaluating a price, verify the company behind it.
A professional-looking advertisement, social-media profile or logo is not proof that the advertiser is an established air-duct-cleaning contractor. NADCA specifically warns homeowners about “blow-and-go” companies that advertise unusually low prices, provide minimal cleaning and then attempt to sell additional services once they are inside the home. Some companies have also falsely claimed NADCA membership.
Homeowners can review NADCA’s guidance for avoiding duct-cleaning scams and verify membership through the association’s Find a Professional directory.
Ask the contractor:
Is this an established local business with a verifiable company identity and service location?
Does the company carry appropriate liability insurance?
Is it a current NADCA member company?
Does the company employ a NADCA Air Systems Cleaning Specialist?
What training and supervision do the technicians performing the work receive?
What vacuum-collection equipment will be brought to the property?
Where and how will that equipment be connected to the HVAC system?
How will the technicians reach the full length of the supply and return branches?
How will the main trunk lines and other included components be accessed and cleaned?
How long does the company expect the complete service to take?
A NADCA logo displayed in an advertisement should be verified independently. A legitimate contractor should also be willing to explain its equipment and process in clear, specific language.
What Should a Complete Quote Identify?
Once the company’s capabilities have been established, the written scope becomes important.
The quote should explain whether the service includes:
Supply branches and registers
Return branches and grilles
Supply and return trunk lines
Accessible plenums
Accessible air-handler or furnace components
Creation and closure of required service-access openings
Protection of the home and occupied areas
Cleanup and removal of collected material
The contractor should also identify any components that are excluded, inaccessible or priced separately.
This is where an apparently inexpensive quote can become misleading. A low total may cover only the most visible portions of the system. Another quote may include the trunk lines, returns, required access work, professional containment and several hours of trained labor.
Comparing the two totals without comparing the actual process can create the impression that the more complete service is simply “more expensive.” In reality, the quotes may not describe the same job at all.
For a closer look at the components involved, see What Does Professional Air Duct Cleaning Include?.
Be Careful With Prices That Depend on What Happens After Arrival
Some advertisements are designed primarily to get a technician through the front door.
The initial price may cover only a small number of vents, a single return, limited vacuuming near the openings or another narrowly defined service. Once the technician arrives, the customer may be told that the complete system requires numerous additional charges.
A professional quote should be based on meaningful information about the home and HVAC system. When additional conditions could affect the price, the contractor should explain those possibilities before the work begins.
A legitimate change in price can sometimes be necessary when concealed conditions are discovered. That is different from advertising a price that was never intended to cover a complete cleaning.
What Makes a Duct Doctor Quote Different?
Duct Doctor of Southern New Jersey is a locally owned air-duct-cleaning company based in Cherry Hill. Air-duct and dryer-vent cleaning are our primary work—not an occasional add-on to carpet cleaning, general housecleaning or another unrelated service.
We are a NADCA member company. Owner Anthony J. Micale III holds NADCA Air Systems Cleaning Specialist and Ventilation System Mold Remediator credentials and has inspected and cleaned thousands of residential and commercial HVAC systems throughout Southern New Jersey.
Our quotes reflect a complete professional cleaning process:
Purpose-built truck-mounted vacuum-collection equipment
Approximately 10,000 CFM of airflow through filtration
Continuous negative pressure applied to the connected HVAC air-distribution system
Cleaning of the complete accessible supply and return system included in the scope
Appropriate access to branches and main trunk lines
Trained technicians using tools selected for the actual duct system
Clear explanations of what is included and what is not
We do not treat a shop vacuum, a short reach through the register opening or a rotary-brush machine as a substitute for full-system negative-pressure source removal.
That is why the best way to compare quotes is not to begin with the last number on the page. Begin by determining whether the companies, equipment, methods and scopes are truly comparable.
If you are considering air-duct cleaning in Southern New Jersey, call Duct Doctor at (856) 375-1776 or visit DuctDoctorNJ.com. We will explain what the service includes, how the cleaning is performed and what equipment will be used in your home.
About the Author
Anthony J. Micale III is the owner and operator of Duct Doctor of Southern New Jersey. He holds NADCA Air Systems Cleaning Specialist (ASCS) and Ventilation System Mold Remediator (VSMR) credentials and has inspected and cleaned thousands of residential and commercial HVAC systems throughout Southern New Jersey. His work focuses on NADCA-standard source-removal air-duct cleaning, dryer-vent cleaning, HVAC-system hygiene and practical customer education based on actual system conditions.