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Notes on ducts, vents and chimneys

What goes wrong behind the registers, the dryer and the damper in a Baltimore County house, written down so you can check your own before you call.

A rotary brush on a rod pushed up into an open ceiling duct, the register hanging below it and a vacuum hose alongside

Does duct cleaning help allergies? What the EPA actually says

Sometimes, and less often than the advertisements suggest. Here is when cleaning the ducts is worth it, and when the money is better spent somewhere else.

September 14, 2026

A gloved hand working a rotary brush inside a brick fireplace, soot falling onto a drop cloth and a vacuum hose taped into the side of the opening

Before the first fire of the year: what to check at the hearth

A flashlight, five minutes and a clear look up the flue tell you most of what you need to know before the first cold night.

September 14, 2026

A gloved hand spraying the vinyl siding at the corner of a two-storey house with a garden hose, the washed strip lighter than the wall around it

Soft washing or pressure washing: what siding actually needs

The green film on the north wall comes off with the right solution and very little pressure. A pressure washer can take off more than you meant it to.

September 14, 2026

Two technicians lifting a hall register with the HEPA vacuum running

After the renovation: where the dust went

Drywall sanding, floor refinishing and demolition make a fine dust that travels. If the heating or cooling ran while the work went on, some of it is in the ducts.

September 14, 2026

A gloved hand pushing a rotary brush into a dryer vent opening in a basement block wall, with the foil duct pulled off and a pile of lint on the floor

Why the dryer takes two cycles to dry one load

The clothes come out damp, the top of the machine is hot and the lint screen is clean. The dryer is usually fine. The vent behind it usually is not.

September 14, 2026

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