Duct Cleaning in Los Angeles, CA
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Step 1 of 3: Equipment
Six months of heating pushes whatever is in the ducts through the house
Your furnace runs November through April here, six months of the year. On nights that average 41 degrees, it cycles on and off to hold the house steady, and every time it does, it pulls air through the return duct and pushes it back out through the supply side. Whatever is sitting in that ductwork moves with the air, into the rooms you're heating.
A duct system that runs half the year carries more of that buildup than one that barely runs at all. The dust doesn't stay in the ducts. It ends up on the air moving through your house.
- 6 months
- November through April, your furnace pushes air through your ducts
- 4 months
- June through September, your air conditioner does the same
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NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There is no fixed schedule that fits every home. What matters more is what is happening in yours. Dust that builds up fast, pets, allergies in the house, or a remodel that kicked up drywall dust are all reasons to get ducts checked sooner. Ducts can look clean at the vent and still be dirty further down the line, so a contractor looking at the actual ductwork will tell you more than a calendar will.
- Is air duct cleaning worth it?
- It is worth it when your ducts are actually dirty, and there are ways to tell. Dust that comes back fast after you clean the house, musty air when the system kicks on, or visible debris at the vents all point to ducts that need attention. If none of that is happening, cleaning them will not do much for you. A contractor can look at the ducts and tell you what condition they are in.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to your ductwork and pulls loose dust and debris out of the supply and return lines. Brushes or air whips loosen anything stuck to the duct walls first, so the vacuum can pick it up. The vents and grilles get wiped down or cleaned separately. On some systems the blower compartment and coil get attention too, since dust collects there as much as anywhere else.