Air Duct Cleaning companies, compared

Residential air duct cleaning is the most heavily advertised and the most frequently misrepresented service in this trade. The price you see on a door hanger or a discount-site coupon, often somewhere between forty-nine and ninety-nine dollars for a "whole house", does not pay for the labour of a real job and is not intended to. It is a lead price. The actual work gets quoted on site, after a technician has your furnace open and a camera pointed at something alarming. Understanding that dynamic is most of what you need in order to shop this category well.

A cleaning worth paying for follows the source-removal approach described in the NADCA ACR standard. The system is placed under continuous negative pressure using a vacuum collection unit, either truck-mounted or a HEPA-filtered portable, so that everything dislodged travels away from your living space rather than into it. Each run is then physically agitated: rotary brushing in rigid sheet metal, air-whip or skipper-ball agitation in flexible duct, contact vacuuming at accessible surfaces. Access openings are cut where needed and properly sealed afterwards. Registers, boots, the return plenum, the blower compartment and the evaporator coil are all part of the system. A price that covers only the supply registers is covering perhaps a third of the surface area where debris actually accumulates.

The single most useful filter on this page is published flat pricing paired with a written definition of what a standard home means to that company. A flat rate of four hundred and ninety-five dollars covering one system, up to twelve supply vents, two returns and two thousand square feet is a number you can compare. A flat rate with no definition attached is not. The second most useful filter is before-and-after camera inspection, because it is the only mechanism by which a homeowner can independently verify work performed inside a sealed metal box in an attic.

It is worth saying plainly what this service will not do. The US Environmental Protection Agency does not certify duct cleaners and does not recommend routine cleaning on a fixed schedule. It recommends cleaning when there is a specific reason: visible mould growth on duct surfaces, vermin infestation, or debris loading heavy enough to release particles into the room. Contractors who lead with health claims rather than observable conditions are selling something other than duct cleaning.