Why Is My Dryer Not Heating? 7 Fixes That Work

Table of Contents

• Start Here: The Most Common Reasons a Dryer Won’t Heat
• Signs of a Clogged Dryer Vent (And Why It Stops Heat)
• How to Test a Dryer Thermal Fuse With a Multimeter
• Checking the Heating Element, Breaker, and Power Supply
  • Voltage test at the terminal block
  • Heating element continuity test
  • Thermostat and high-limit tests
• Gas Dryer Not Heating? Igniter and Coil Checks
  • The ignition sequence, step by step
  • Testing the igniter
  • Testing the gas valve coils
  • Flame sensor and vent safety switch
  • Gas supply checks
• Dryer Heating Element Replacement Cost: What to Expect
• Preventative Maintenance Schedule to Avoid Future Failures
• When to Call a Professional for Dryer Repair
• Frequently Asked Questions

Last Updated: September 18, 2026

Start Here: The Most Common Reasons a Dryer Won’t Heat

If your dryer is not heating, the problem usually traces to one of five parts: a clogged vent, a blown thermal fuse, a failed heating element, a tripped breaker, or a worn gas igniter. At Kelly Appliance Repair Service, we see these culprits week after week.

• No heat at all: suspect the thermal fuse or breaker
• Some heat, then stops: suspect a clogged vent or cycling thermostat
• Tumbles but never warms: suspect the heating element or igniter
• Trips the breaker: suspect a shorted element or wiring

Signs of a Clogged Dryer Vent (And Why It Stops Heat)

A clogged vent is the most common and most dangerous cause of a dryer not heating well. When lint blocks airflow, heat builds inside the drum instead of escaping.

Watch for these signs:

• Clothes take two or more cycles to dry
• The top of the dryer feels hot to the touch
• A burning or musty smell during operation
• The outside vent flap barely opens
• Lint builds up around the door or behind the drum

How to Test a Dryer Thermal Fuse With a Multimeter

Testing a dryer thermal fuse with a multimeter takes about ten minutes and confirms whether the fuse is why your dryer is not heating. The fuse melts open when the dryer overheats, cutting power to the heater for good.

Here is the step-by-step process:

1. Unplug the dryer or shut off the gas and power.
2. Pull the dryer out and remove the back panel.
3. Locate the thermal fuse, a small white or silver cylinder on the blower housing or heater box.
4. Set your multimeter to the continuity or ohms setting.
5. Touch one probe to each terminal of the fuse.
6. Read the result.

Total Time: 10-15 minutes
Difficulty: Beginner

Multimeter Reading	What It Means	Next Step
0 ohms (beep)	Fuse is good	Test the heating element
No reading (OL)	Fuse is blown	Replace the fuse and find the cause
Fluctuating	Bad connection	Check the wiring harness

Checking the Heating Element, Breaker, and Power Supply

A dryer that spins but produces no heat often has a power problem, not a part problem. Electric dryers run on 240V and use two breaker legs. If one leg trips, the drum motor still runs on 120V while the heater gets nothing, the classic symptom of a half-tripped breaker.

Voltage test at the terminal block

Before testing any part, confirm the dryer receives 240V. Set your multimeter to AC voltage (200V or higher).

1. With the dryer plugged in and the door closed, locate the terminal block where the cord connects inside the back panel.
2. Touch one probe to the left hot terminal and the other to the right hot terminal. A healthy reading is approximately 240V.
3. Measure each hot leg to neutral (or to ground). Each should read approximately 120V.
4. If one leg reads 120V and the other reads 0V, the problem is upstream, a tripped breaker leg, a loose terminal, or a damaged cord. Do not replace the element.

Heating element continuity test

1. Set the multimeter to the ohms (resistance) setting, typically the 200-ohm range.
2. Disconnect the two wires from the element terminals so you are testing the element alone.
3. Touch one probe to each terminal.
4. A good element typically reads between 8 and 12 ohms, though the exact value varies by wattage and model. A 5,000W element reads lower than a 4,000W element.
5. A reading of OL (open loop) means the element coil is broken and the element needs replacement.
6. Also test each terminal to the metal housing. Any reading other than OL means the element is shorted to ground and must be replaced.

Thermostat and high-limit tests

Component	Typical Good Reading	What a Bad Reading Means
Cycling thermostat	Near 0 ohms (continuity)	Open = no heat regulation, replace
High-limit thermostat	Near 0 ohms (continuity)	Open = dryer overheated, find the airflow cause first
Thermal fuse	Near 0 ohms (continuity)	Open = replace and fix the root cause
Heating element	8-12 ohms	OL = broken coil, replace

Gas Dryer Not Heating? Igniter and Coil Checks

A gas dryer not heating usually points to the igniter, gas valve coils, flame sensor, or gas supply. The sequence is always the same: the igniter glows, the gas valve opens, the burner lights, the flame sensor confirms ignition, and the burner cycles to hold temperature. Break any step and the drum spins cold.

The ignition sequence, step by step

Watch the burner through the inspection port (usually a small cover on the front lower panel) with the dryer running on a heat cycle:

1. Igniter glows, takes 15 to 45 seconds on most models. If it never glows, suspect the igniter, the flame sensor, or the control board.
2. Gas valve opens, you hear a soft click and the flame lights within a few seconds of the igniter reaching full glow.
3. Flame stays lit, the burner runs for a minute or two, then cycles off as the thermostat is satisfied.
4. Cycle repeats, the igniter glows again and the burner relights.

Testing the igniter

1. Unplug the dryer and shut off the gas supply.
2. Remove the front lower panel to access the burner assembly.
3. Disconnect the igniter wires and set the multimeter to ohms.
4. A healthy igniter typically reads between 50 and 400 ohms, depending on the model. OL means the igniter is cracked or burned out and must be replaced.
5. Inspect the igniter element itself for cracks or a white, chalky appearance, both indicate failure even if continuity looks fine.

Do not touch the igniter element with bare fingers. Skin oils cause hot spots that shorten its life.

Testing the gas valve coils

There are usually two or three coils on top of the gas valve. Test each one:

1. Set the multimeter to ohms.
2. Disconnect the coil wires and measure across the coil terminals.
3. The boost coil (the two-terminal coil) typically reads around 1,000 to 1,400 ohms.
4. The holding coil (the three-terminal coil) typically reads around 1,300 to 1,500 ohms across the outer terminals and around 500 to 700 ohms across the inner pair.
5. A reading of OL, or a reading far outside these ranges, means the coil has failed.

Flame sensor and vent safety switch

Two more parts can stop a gas dryer from heating:

• Flame sensor, confirms the burner actually lit. If it is coated with carbon or has failed, the control board shuts the gas valve after a few seconds. Clean the sensor surface with fine steel wool and retest, or replace it if continuity is open.
• Vent safety switch, a thermal switch on the blower housing that opens if airflow is restricted. A clogged vent can trip it, which is why a gas dryer with a blocked duct behaves exactly like one with a bad igniter. Clear the vent before replacing any burner part.

Gas supply checks

• Confirm the gas shutoff valve behind the dryer is fully open (handle parallel to the pipe).
• If the dryer shares a gas line with another appliance and both are running, low pressure can prevent ignition.
• If you smell gas at any point, stop and ventilate the room. Do not test further. Call a licensed technician.

Dryer Heating Element Replacement Cost: What to Expect

Dryer heating element replacement cost depends on the part, the brand, and whether a technician does the work. The part is often inexpensive, but labor, diagnostics, and related fixes add up.

What drives the final price:

• The specific heating element for your model
• Whether the thermal fuse or thermostat also failed
• Access difficulty inside the cabinet
• Whether the vent needs cleaning at the same time

Preventative Maintenance Schedule to Avoid Future Failures

A simple maintenance routine prevents most dryer heating failures. The best habit is cleaning the lint screen before every load, but that is only the beginning.

Follow this schedule:

Task	Frequency	Why It Matters
Clean lint screen	Every load	Protects airflow
Check vent hose	Monthly	Catches clogs early
Clean exhaust duct	Every 6-12 months	Prevents overheating
Vacuum behind dryer	Every 3 months	Reduces fire risk
Inspect vent flap	Seasonally	Confirms airflow

• Clean lint screen before each load
• Vacuum the lint trap housing monthly
• Inspect the vent hose for kinks
• Schedule annual duct cleaning
• Check the outside vent flap opens fully

When to Call a Professional for Dryer Repair

Call a professional when the fix involves gas, a breaker that keeps tripping, or a diagnostic you cannot pin down. Some jobs are safe for a confident DIYer; some are not.

Call a pro if:

• You smell gas at any point
• The breaker trips repeatedly
• You have replaced a fuse and it blew again
• The dryer is a gas model and the igniter or valve is suspect
• You have tested the element, fuse, and thermostats and still have no heat

Frequently Asked Questions

Is it worth fixing a dryer that doesn’t heat?

It depends on the age and the part. A thermal fuse or heating element replacement usually costs far less than a new dryer, so repair makes sense for machines under 8-10 years old. If the dryer is older, has multiple failed parts, or the drum and motor show wear, replacement may be smarter. A technician can give you a straight answer after a diagnostic.

How can I tell if the heating element is bad in my dryer?

A bad heating element often shows visible breaks, blisters, or a scorched look on the coil. You can confirm it with a multimeter set to continuity: disconnect power, remove the element, and touch the probes to each terminal. No reading means the element is broken and needs replacement. A dryer not heating with a good element points to the thermal fuse or power supply instead.

Can a clogged dryer vent cause it to stop heating?

Yes. Restricted airflow from lint buildup traps heat inside the dryer. The high-limit thermostat or thermal fuse then trips to prevent a fire, cutting power to the heating element. Signs of a clogged dryer vent include longer dry times, a hot dryer cabinet, and a weak exhaust flap. Cleaning the vent and duct often restores heat.

How much does it cost to replace a dryer heating element?

Dryer heating element replacement cost varies by model, part availability, and labor rates. The part itself is usually modest, while the total depends on how accessible the element is and whether other components failed at the same time. Kelly Appliance Repair Service can provide a quote after diagnosing your specific dryer.

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A dryer that will not heat is frustrating, but it is rarely a mystery. Most failures come down to airflow, a safety fuse, a power leg, or a worn igniter, and each one is testable. When the diagnosis gets complicated, or when gas is involved, the smart move is to bring in a trained technician. Kelly Appliance Repair Service offers fair pricing, years of hands-on experience, and a 30-day labor warranty on every job. Book your service repair today and get your laundry routine back on track.