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Here's what four common appliance problems look like, before and after the fix.

These are example photos of each condition, not RepairHearth jobs.

Freezer frost.

Thick frost on the walls means humid air is getting in, or the defrost system has stopped working.

It blocks airflow, so food softens even while the freezer runs.

Once the cause is fixed and the ice is cleared, cold air circulates again.

You can check the door seal yourself. Defrost parts are technician work.

Dryer duct.

A long, sagging foil duct traps lint in every dip.

It's the most common reason clothes need two cycles, and lint buildup is a fire risk.

A short, smooth metal duct lets moist air out, and normal drying times come back.

Clean the lint screen after every load.

Dishwasher.

Food debris and standing water in the tub usually point to a clogged filter or drain.

With the filter rinsed and the drain clear, water leaves the tub, and the spray arms get full pressure.

If it still won't drain, the pump may need a technician.

Gas cooktop.

Spills and burnt residue can block the igniter and the burner ports, so the burner clicks but won't light.

Cleaned, dried, and with the cap seated properly, you should see a steady, mostly blue flame.

If you ever smell gas, leave first, and call from outside.

If a safe check doesn't fix it, get it diagnosed.

See whether a participating repair provider serves your ZIP at repairhearth.com.