A sunlit attic interior showing exposed wooden rafters, a skylight, and a silver insulated flexible HVAC duct running along the plywood floor toward an air handling unit.

Duct Cleaning in Battle Mountain, NV

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Interior view of a residential attic showing a metal air-handling unit connected to several flexible foil-insulated HVAC ducts, illuminated by sunlight streaming through a skylight.

Nine months of heating pulls a lot of dust through your ducts

Your furnace runs September through May here, nine months of the year. That is nine months of air moving through the same ductwork, back and forth, day and night. Whatever is loose in that system, dust, dry skin, pet hair, gets pulled through the return and pushed back out through every vent in the house.

Lander County has logged 101 winter storms and 82 damaging wind events over the past ten years. A storm that knocks out power shuts the system down cold, and when it starts back up, the first blast of air through the ducts carries whatever has settled there since the last time it ran.

9 months: September through May, your furnace pushes air through your ducts
2 months: July through August, your air conditioner does the same

Isometric cutaway illustration of a small house with a dark shingled gable roof, showing interior rooms with furniture, a furnace unit, and branching ductwork with round ceiling vents.

Your ducts carry heat September through May and cooled air July through August.

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How often should air ducts be cleaned?: There's no fixed schedule that fits every home, so let a contractor tell you based on what they find. If anyone in the house has allergies, or you've had rodents or a water leak near the ductwork, it's worth checking sooner rather than later. Homes with pets or a recent renovation also tend to build up dust and debris faster.
Is air duct cleaning worth it?: It's worth it when there's a real reason for it, like visible dust coming from the vents, a musty smell when the system runs, or debris you can see when a vent cover is off. It won't lower your heating bills or fix a furnace that's struggling, and there's no proof it prevents illness. The clearest case for it is dirty ducts you can confirm, not a routine schedule.
What does air duct cleaning involve?: A contractor connects a vacuum system to the ductwork and uses brushes or air tools to knock loose dust and debris, then pulls it out through the vacuum before it can resettle. Registers and grilles get cleaned too, and the vent covers usually come off during the process. On a full job, the return and supply sides both get done, along with the coil area near the furnace or air handler if it's accessible.

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