How to Avoid Air Duct Cleaning Scams (2025)
How many phone calls have you received trying to sell you an air duct cleaning? Probably too many. As of March 1st, 2018, the Government of Ontario banned door-to-door sales of certain household appliances and services. Since then, scammers have turned to aggressive telemarketing tactics. The HVAC and duct cleaning industry has no shortage of bad actors. Below, you’ll learn how to recognize these scams quickly—and avoid them.
The Importance of NADCA Certification
NADCA (National Air Duct Cleaners Association) launched the Breathing Clean initiative to help homeowners spot scams and understand proper cleaning methods. Breathing Clean promotes awareness about why air duct cleaning matters and how it should be performed. Climate Works is NADCA certified, ensuring your duct cleaning is done to the highest industry standards.
Many HVAC systems do require maintenance and repairs that homeowners may not be familiar with. Scammers exploit this lack of knowledge, pressuring homeowners who haven’t researched the company or service.
3 Types of Air Duct Cleaning Scams
Blow-and-Go Scams
These companies advertise extremely low-priced duct cleanings—often through flyers or social media. A proper professional duct cleaning takes time, and most reputable companies can handle only 2–4 homes per day. Blow-and-go companies book far more appointments, allowing only enough time for a superficial cleaning of easily accessible areas. Hidden contaminants remain untouched.
These businesses may also push unnecessary services or upsells.
CBC Marketplace conducted a hidden-camera investigation exposing how blow-and-go companies overcharge and underperform. The segment above features a NADCA expert who helps reveal the tactics these companies use to scam consumers.
Bait-and-Switch Scams
Bait-and-switch scams begin with an unbelievable deal—delivered by coupon, email, social media, or a phone call. Once the company arrives, they perform only part of the job. A common tactic is cleaning only the supply ductwork, then showing you how dirty the return ductwork is and charging double the quoted price to clean it.
These “additional services” are typically included in a proper NADCA-standard residential duct cleaning. Even if you agree to the upsells, the final work is often still substandard.
Inspection Scams
Some scammers prey on fear. They lure homeowners with a great discount, then claim to find mould or other serious hazards during their “inspection.” They may try to charge thousands for remediation that isn’t required.
If someone claims they found mould, pause the job and get a second opinion—either from another reputable company or from a licensed mould assessor. Never authorize expensive work without verifying the issue.
How to Avoid Air Duct Cleaning Scams
One of the biggest mistakes homeowners make is assuming every company provides equal service and that price is the only difference. While reputable companies may seem more expensive upfront, the quality, safety, and thoroughness they provide is worth it.
With so many scams targeting homeowners, the most common question is: “How can I avoid an air duct cleaning scam?”
Hire a NADCA-Certified Professional
Commercial and industrial facilities often require certified contractors—your home deserves the same level of expertise. NADCA-certified professionals follow strict industry standards and complete advanced training in HVAC system cleaning. Hiring a certified expert ensures your money is well spent and the job is done correctly.
NADCA makes it simple to find a reputable provider. Visit the Find a Professional page on NADCA’s website to locate certified duct cleaning experts in your area.
Frequently Asked Questions About Air Duct Cleaning Scams
How often should I have my air ducts cleaned?
For most homes, duct cleaning every 3–5 years is sufficient. However, you may need more frequent cleanings if you’ve had major renovations, pets that shed heavily, smokers in the home, or visible dust and debris blowing from vents.
Are very low-priced duct cleaning offers always a scam?
Not always—but they are a big red flag. If the price seems too good to be true, it usually is. Professional NADCA-standard duct cleaning takes time, specialized equipment, and trained technicians. Extremely low prices often mean rushed work, partial cleaning, or high-pressure upselling.
How can I check if a duct cleaning company is reputable?
Look for NADCA certification, check online reviews, ask for proof of insurance, and request a written estimate that clearly outlines what is included. A reputable company will answer your questions openly and will not pressure you into same-day decisions.
What should be included in a proper residential duct cleaning?
A thorough cleaning should include supply and return ductwork, registers and grilles, the air handler, blower motor, coils (where accessible), and other key components of your HVAC system. The technician should use professional-grade negative air machines and agitation tools, not just a shop vac.
What should I do if I think I’ve been scammed?
Document everything: invoices, names, dates, and any photos or videos. Contact the company and give them a chance to resolve the issue. If they refuse, you can report them to consumer protection agencies, your local Better Business Bureau, or NADCA if they falsely claimed to be certified.
Need a Trustworthy Duct Cleaning Company in Ottawa?
Protecting your home starts with choosing the right team. Whether you’re worried about scams, overdue for a cleaning, or simply want a professional inspection, Climate Works Heating, Cooling & Plumbing is here to help.
Our NADCA-certified technicians follow industry-leading standards to ensure your ducts are cleaned properly, your air is healthier, and your HVAC system runs efficiently—without hidden fees or high-pressure tactics.
Book a visit now so you can enjoy cleaner air, better comfort, and total peace of mind.
Contact Us
Ottawa (Headquarters)
2639 Pollock Rd.
Richmond, ON, K0A 2Z0
info@climateworks.ca | 613-838-9989
Toronto & GTA
1883 Mattawa Ave.
Mississauga, ON, L4X 1K8
gtaestimating@climateworks.ca | 437-317-0699