How do I know if a duct cleaning company is legit?

Look for proper licensing, insurance, and transparent pricing - legitimate duct cleaning companies will readily provide proof of WSIB coverage, liability insurance, and detailed written estimates before starting any work.

A legitimate duct cleaning company should have several key credentials. In Ontario, they should carry WSIB coverage and at least $2 million in liability insurance. While duct cleaning itself doesn't require a specific license, reputable companies often have HVAC technicians on staff who hold gas technician licenses (G2/G3) since they understand heating and cooling systems comprehensively.

Transparent pricing and detailed explanations are hallmarks of honest companies. Legitimate contractors will provide written estimates, explain exactly what's included in their service, and show you the equipment they'll use. They should use truck-mounted vacuum systems or high-powered portable units - not just shop vacuums. Be wary of door-to-door salespeople offering "today only" deals or companies that quote extremely low prices over the phone without seeing your home.

Red flags include companies that demand payment upfront, can't provide insurance certificates, or use high-pressure sales tactics. Avoid anyone who claims your ducts are "dangerous" without proper inspection, or who tries to sell you expensive add-ons like duct sealing or antimicrobial treatments during the cleaning visit. Legitimate companies will also provide before-and-after photos and explain their process clearly.

In the Ottawa market, professional duct cleaning typically costs $400-$800 for a whole home, depending on size and complexity. Companies charging significantly less may be cutting corners on equipment or thoroughness. Always verify that the company is registered with the Better Business Bureau and check recent customer reviews on Google and other platforms.

For peace of mind with your duct cleaning needs, consider working with established HVAC contractors who offer duct cleaning as part of their comprehensive services - they have reputations to protect and the proper equipment to do the job right.