Published 2026-05-01 · Madison Garage Door Pros

Garage Door Won't Open After a Cold Snap

Quick answer: When a garage door will not open after a hard freeze, check four things in this order: a bottom seal frozen to the floor, an opener that stalls in the cold, a broken spring, and iced or bumped safety eyes. You can often fix a frozen seal or a dirty sensor yourself. A broken spring means stop and call.

You walk into the garage after a night well below zero. You press the button. The door hums, jerks an inch, and stops. The cause is usually one of a short list, and it helps to know which one before you press the button again.

Cause 1: Bottom seal frozen to the floor

The rubber seal on the bottom of the door rests on the concrete. Snow melts off the car, runs to the door, and freezes overnight. By morning the seal can be iced to the floor from one end to the other.

How to tell: the opener tries to lift, the middle of the door bows up a little, the corners stay put, and the opener stops after a second or two.

How to free it: break the ice with a plastic scraper. If you use ice melt, rinse the door bottom afterward. Work along the whole seal, and spend extra time at the corners. Then try the opener once. If the door lifts, leave it open for a few minutes so the water can drain before you close it.

What not to do: do not chip at the ice with a metal tool, do not pour hot water on it, and do not pry up on the bottom panel. The bottom panel bends easily.

Cause 2: The opener stalls in the cold

Cold stiffens grease and loads the motor. Some openers stop to protect the motor. Let it rest, free the door, and try once more. If it still stalls, call.

You may hear a short, strained hum and then nothing. The lights on the opener can stay on while the door does not move. Pressing the button over and over will not help. Opener repair usually runs $180 to $440, depending on the part.

Cause 3: A broken spring

More springs break on cold mornings. A spring near the end of its life often picks the coldest day to let go. Many people heard a loud bang in the night and did not know what it was.

How to spot it: look at the spring on the bar above the door. A healthy spring is one tight coil from end to end. A broken one has a gap of an inch or two somewhere along it.

With a broken spring, the opener has to lift the full weight of the door on its own, and it cannot. It will hum, strain, maybe move the door a little, and stop. Stop pressing the button and call. A single torsion spring usually runs $220 to $320 to replace. This is not a job to do yourself. A wound spring holds enough force to cause serious injury.

Cause 4: Safety eyes iced or out of line

Two small sensors sit near the floor on each side of the door. They send a beam across the opening. If the beam is blocked, the door will not close. In the cold, a thin layer of frost can form on the lens and scatter the beam.

How to tell: one sensor light usually stays steady and the other blinks when the beam is blocked. If the light blinks with nothing in the way, check the lenses for a white haze.

The fix: wipe both lenses with a dry cloth. A wet rag leaves water that will freeze again. If a sensor was knocked during the year, loosen its bracket, point the two sensors straight at each other, and snug the bracket back down. The blinking light should go steady.

Keep in mind that on most openers the eyes only matter when the door is closing. If the door will not open, the sensors are likely not the cause.

What to try before you call

Look at the spring above the door. If you can see a gap, stop and call. Do not press the button again.
Wipe both sensor lenses dry and check for a steady light.
If the opener shows no lights at all, check the breaker and make sure the opener is plugged in. If both are fine and it is still dark, call us.
Look at the bottom of the door from outside. If ice lines the seal, break it with a plastic scraper, then try once more.
Listen when you press the button. A hum that cuts out points to a stalled opener, a frozen seal, or a broken spring. If the opener runs but the door does not follow, check whether the red release cord was pulled.

If none of these gets the door moving, give us a call. The estimate is free.

When to stop and call

A gap in the spring. The opener cannot lift the door without it, and more tries wear out the motor and gears.

The door lifts a few inches and drops back hard. A cable may have come off its drum or snapped. Lifting again could pull off the second cable.

A loud bang in the night. This is most often a spring breaking. The door may look normal but will not open.

A dead opener with power at the outlet. It could be the circuit board or another part, and it needs testing.

A door that sits crooked in the tracks. The door is off track or a roller failed. Running it could drop the door.

How we handle a cold-weather call

We start with a look at the whole door: springs, cables, rollers, tracks and the seal. Then we pull the release and lift the door by hand. A balanced door lifts smoothly and stays put at about waist height. A door that will not budge points to a frozen seal or a broken spring. A door that slams down points to weak springs.

Next we test the opener. If the opener will not start, we test the board and the power. If the gear is dragging in cold grease, we clean it and re-grease it with a grease made for the cold.

Last, we test the safety features: the sensors, the force settings, the manual release and the auto-reverse. All of them have to pass before we leave.

Frequently asked

Should I keep pressing the opener button if it's not working?

No. After two or three tries, stop. Each stalled press strains a cold motor, can strip the gears in the opener, and can bend a panel if the door is stuck to the floor.

Can I pour hot water on the frozen bottom seal?

No. On a cold morning the water freezes again in minutes, and the new ice is thicker than before. Break the ice with a plastic scraper. If you use ice melt, rinse the door bottom afterward. Never force the opener while the seal is still frozen down.

Why does this happen on the coldest mornings?

Cold stiffens the grease in the opener and the door hardware, so everything takes more force to move. Meltwater from the car freezes under the seal overnight. And more springs break on cold mornings.

Is there a way to prevent this next winter?

Yes. Before winter, have the door checked: springs, cables, rollers, the opener and the safety eyes. Replace a cracked or flat bottom seal, and keep meltwater swept away from the door on mild days.

Can you help during a cold snap right away?

Same-day repair is often possible when parts are on hand. Call and tell us what the door is doing: a gap in the spring, a frozen seal, or the sound it made.

Will the manual release work if the door is frozen down?

Pulling the red release cord disconnects the door from the opener, but it does not break the ice at the bottom seal. If the door will not move by hand after you pull the cord, the seal is frozen to the floor. Stop lifting and free the seal first. Forcing it can crack the bottom panel.