Most Ontario households running two or three loads of laundry a week don’t notice when their dryer starts slipping — clothes take a little longer, you run it again, you move on. But a dryer that takes two full cycles to dry one load has a specific problem that almost always has a fixable cause, and delaying the fix means paying for double the energy use every single laundry day. In Simcoe County and York Region, where winters mean more indoor drying and higher laundry frequency, the cost adds up quickly. This guide covers every common cause, the Ontario-specific fire risk that makes vent maintenance urgent, and a step-by-step approach to diagnosing the problem before calling a technician.
Safety-first troubleshooting
A safe first look before requesting service.
Collect useful details without opening panels, bypassing controls, or attempting work beyond the owner’s manual.
Useful details to check
- Confirm the symptom and note when it began.
- Record any visible error code.
- Check only user-accessible settings or obstructions described in the owner’s manual.
- Find the appliance model number.
Stop and request service
- Gas odour, smoke, or a burning smell.
- Sparks or a repeated breaker trip.
- An active water leak near electricity.
- Any check requiring unsafe access or disassembly.
Do not remove panels, bypass safety controls, or continue operating an appliance with a safety warning.
Why Your Dryer Takes Two Cycles — 5 Root Causes
When a dryer runs a full cycle and clothes are still damp, the cause is almost always one of five things. In order of frequency:
1. Blocked Dryer Vent (Responsible for 80% of Cases)
The dryer vent removes hot, moist air from the drum. When that vent is blocked — whether by lint accumulation, a bird’s nest at the exterior cap, a crushed flexible duct behind the machine, or a kinked hose — the moist air has nowhere to go. The dryer drum heats up and runs, but the moisture can’t escape, so clothes remain damp after a full cycle. This is by far the most common cause of a two-cycle dryer, and it doubles as a serious fire risk (detailed below).
2. Lint Screen Not Cleaned
A partially or fully blocked lint screen restricts airflow through the drum, reducing drying efficiency significantly. The lint screen should be cleaned after every single load. If you haven’t been doing this consistently, a heavily loaded screen can reduce drying efficiency by 20–30%, and a thick buildup of fabric softener residue on the screen can reduce it even further — even when the screen looks visually clean. Hold the screen up to a light source: you should see light through every part of the mesh.
3. Moisture Sensor Dirty or Failing
Modern dryers use moisture sensors — two metal strips inside the drum, typically near the lint filter — to detect when clothes are dry and automatically end the cycle. If these sensors are coated with fabric softener residue (extremely common with dryer sheet use), they read the load as dry before it actually is, stopping the cycle early. The result: clothes are technically at the set dryness level when the dryer stops, but your sensor’s calibration is off and the reading is wrong. The fix is usually simple cleaning (detailed below).
4. Weak Heating — Element Degrading (Electric) or Gas Valve Partially Closing (Gas)
Electric dryers use a heating element that can partially fail — still producing heat, but at reduced output. A weakening element won’t trigger an error code in many dryer models; the dryer runs normally, just with insufficient heat to dry a load in one cycle. On gas dryers, a gas valve solenoid that’s beginning to fail can cause the gas valve to partially close mid-cycle, reducing burner output. Both failures result in a dryer that “runs” normally but underperforms thermally.
5. Overloaded Drum
Ontario families running large loads — king-size duvets, heavy winter blankets, multiple pairs of jeans — sometimes underestimate how drum capacity affects drying. An overloaded drum doesn’t allow clothes to tumble freely, preventing hot air from circulating around each item. Heavy items like jeans and towels particularly tend to clump when overloaded. The fix is simple: dry large or heavy loads in two smaller loads, or for bulky items, use the appropriate large-item cycle setting.
The Ontario Dryer Vent Fire Risk — This Is Serious
If your dryer takes two cycles to dry, and the cause is a blocked vent, you have a fire risk in your home — not a hypothetical one.
The Ontario Office of the Fire Marshal identifies clothes dryers as one of the top causes of residential fires in Ontario. The vast majority of dryer fires are caused by blocked vents that allow lint and heat to accumulate to combustion temperatures. Lint is highly flammable, and a dryer running repeatedly in an attempt to dry damp clothes is running hot, for longer periods, against a potential fuel source in the vent line.
Key Ontario fire safety facts about dryer vents:
- Blocked dryer vents are responsible for the majority of dryer-related house fires.
- Many dryer fires start inside the vent duct itself, not inside the machine — which means the fire is inside your wall or ceiling before you see any signs.
- The interval for professional dryer vent cleaning in Ontario is every one to two years for a typical household. For households with pets (pet hair accelerates lint accumulation), high laundry frequency, or longer vent runs, annual cleaning is appropriate.
- Multi-unit buildings — apartments and condos common in Barrie and Newmarket — with shared dryer vent stacks require more frequent inspection because blockages in shared venting affect multiple units.
If your dryer has been taking two cycles to dry for several weeks or months, treat vent inspection as urgent, not optional.
How to Check and Clean Your Dryer Vent — Safe DIY
Before calling a technician, a homeowner can safely inspect and often clear a dryer vent blockage. Here’s the step-by-step process:
Step 1: Check the Exterior Vent Flap
Go outside and locate your dryer’s exterior vent — it’s typically on an exterior wall at or near dryer level, with a plastic or metal flap cover. Run the dryer and check: the flap should open and you should feel a strong, steady flow of warm air. If the flap doesn’t open, or airflow is weak or absent, the vent is blocked somewhere in the run. Also check for bird nests, wasp nests, or debris inside the vent cap — these are common and completely block airflow.
Step 2: Inspect the Lint Screen and Housing
Remove and clean the lint screen. Then use a flashlight to look inside the lint screen housing (the slot the screen sits in). A surprising amount of lint bypasses the screen and accumulates in the housing itself. A long-handled dryer vent brush or even a vacuum with a crevice tool can clear this area.
Step 3: Inspect the Flexible Duct Behind the Dryer
Pull the dryer away from the wall carefully. Inspect the flexible duct connecting the dryer’s exhaust port to the wall duct. Check for:
- Kinks or sharp bends (a 90-degree kink can reduce airflow by 50%)
- Crushed duct from the dryer being pushed back too close to the wall
- Foil accordion duct that has partially separated from a connection point
A note on duct material: Ontario’s building code requires rigid metal duct for dryer vent runs over 8 feet. Flexible foil accordion duct is only appropriate for the short connection between the dryer and the wall. If your entire vent run is flexible foil, consider upgrading to rigid metal — it accumulates far less lint, is less likely to kink, and is code-compliant for longer runs.
Step 4: Clear the Full Vent Run
A dryer vent cleaning kit (available at Home Depot or Canadian Tire for $20–$40) consists of flexible rods that connect together and a round brush head. Working from the dryer end or the exterior end, run the brush through the full vent to clear accumulated lint. For longer or more complex vent runs, a professional dryer vent cleaning service is the better option.
For a more detailed guide, see our dedicated post: How to Clean a Dryer Vent.
Moisture Sensor Cleaning — The Overlooked Fix
Moisture sensor fouling is one of the most common causes of a dryer stopping too early — particularly in Ontario households that use fabric softener dryer sheets. The sensors are two metal strips (sometimes four, depending on the model) mounted inside the drum, usually positioned just below the lint filter opening where tumbling clothes make contact with them.
As the drum tumbles, clothes brush across the sensors repeatedly. Over time, the waxy coating from fabric softener sheets builds up on the metal strips, creating an insulating layer that reduces the sensors’ ability to accurately detect moisture. The dryer reads the load as drier than it actually is and ends the cycle early.
How to Clean the Moisture Sensors
- Locate the two metal strips inside the drum (consult your dryer’s manual if unsure of their location — common positions are near the lint filter on front-load dryers).
- Dampen a cloth or fine steel wool pad with rubbing alcohol (isopropyl alcohol).
- Wipe each sensor strip firmly, removing any discolouration or waxy buildup. The metal should look bright and clean.
- Allow to dry completely before running the dryer.
To test whether sensor cleaning resolved the issue: run a load with a single dry cloth. The dryer should detect that the cloth is dry quickly and end the cycle (or the auto-dry indicator should activate). If the dryer runs through a full timed cycle even with a dry cloth, the sensors may need replacement rather than just cleaning.
The fix costs nothing if it works — and it works often enough that it’s always worth trying before calling for a service call.
Heating Element vs. Gas Valve — When Weak Heat Is the Problem
If vent cleaning and moisture sensor cleaning don’t resolve the two-cycle problem, the next likely culprit is a heat production issue inside the machine.
Electric Dryers — Heating Element Test
An electric dryer’s heating element can be tested with a multimeter. A functioning element shows continuity (resistance in the range specified on the element’s label). An element with a break in the coil shows no continuity and needs replacement. A partially failed element may show resistance but run at reduced output — this is harder to catch with a basic continuity test but produces the symptom of insufficient heat.
Electric dryer heating element replacement: typically $100–$160 + HST for parts and labour, including the service call diagnostic. See our full guide: Dryer Not Heating.
Gas Dryers — Gas Valve Solenoid Failure
Gas dryers use a set of gas valve solenoid coils to open the gas valve when the igniter reaches temperature. When one solenoid coil begins to fail, it may intermittently fail to open the valve fully, causing the burner to run at reduced output or not ignite reliably for parts of the cycle. The symptom is a dryer that starts drying normally then seems to stop producing heat partway through the cycle.
Important: any work on the gas valve, gas solenoids, or gas supply components of a gas dryer requires a TSSA-licensed gas technician in Ontario. This is not DIY territory. Gas valve solenoid replacement (parts + TSSA-certified labour): typically $120–$180 + HST.
For gas valve issues specifically, always ask whether your technician holds a current TSSA gas fitting licence. SureFit technicians are TSSA certified — see TSSA Gas Appliance Regulations for details.
The Thermal Fuse
On both gas and electric dryers, a blown thermal fuse can cause the dryer to run with no heat at all (rather than just reduced heat). If your dryer tumbles but produces zero heat, the thermal fuse is the first thing to check — it’s usually inexpensive ($15–$30 in parts) and straightforward to replace. A blown thermal fuse almost always indicates that the dryer overheated, which in turn almost always indicates a blocked vent. Don’t just replace the fuse — fix the underlying vent problem too, or the new fuse will blow again.
When “Two Cycles” Means Replace, Not Repair
Not every underperforming dryer is worth repairing. The 50% rule provides a useful framework: if the cost of the repair exceeds 50% of the current replacement cost of the dryer, replacement is usually the better financial decision.
The case for replacement is strongest when:
- The dryer is older than 10–12 years and has already had one or two previous repairs. Multiple component failures on an older machine suggest the appliance is in general decline.
- The dryer requires multiple simultaneous repairs — for example, a failed heating element plus a drum bearing issue plus a damaged door seal. Each individual repair might be justified, but replacing an old machine with several concurrent failures often makes more financial sense.
- Replacement parts are difficult to source. Older or discontinued dryer models may have parts on extended backorder, making a repair impractical regardless of cost.
Current mid-range dryers in Ontario (2026) run $700–$1,100 + HST for a quality machine from brands like Whirlpool, LG, Samsung, or Maytag. A repair that costs more than $350–$550 on a dryer approaching or past 10 years old may not represent the best use of your money.
A SureFit diagnostic visit ($85 + HST per appliance, waived when you approve the repair) gives you an honest assessment: if our technician determines replacement is the better option, we’ll tell you so rather than recommend a repair that won’t give you value. For a framework on the repair-vs-replace decision, see: Appliance Repair Cost Guide. Error code lookups for Whirlpool dryers: Whirlpool Dryer Error Codes.
Frequently Asked Questions
How do I know if my dryer vent is blocked?
The clearest sign is standing outside and checking the exterior vent cap while the dryer runs — you should feel a strong flow of warm, moist air. If the flap doesn’t open or airflow is weak, the vent is blocked. Inside the house, additional signs include: clothes taking more than one cycle to dry, the dryer itself feeling very hot to the touch on the exterior, a musty smell after running the dryer, or the laundry room feeling unusually humid during a dryer cycle. A full blockage will often cause a thermal fuse to blow, killing heat entirely. Any of these signs warrant immediate vent inspection.
Can a blocked dryer vent cause a fire in Ontario?
Yes. The Ontario Office of the Fire Marshal identifies blocked dryer vents as a leading cause of dryer-related residential fires in Ontario. Lint is highly flammable, and a dryer vent that accumulates lint over months or years creates a fuel source in direct contact with the hot exhaust air from the dryer. Most dryer fires ignite inside the vent duct — inside your wall or ceiling — rather than inside the appliance itself, which is why they’re often well-established before anyone notices smoke. Regular vent cleaning (every one to two years for most households) and keeping the lint screen clean after every load are the two most effective prevention measures.
How often should I clean my dryer vent in Ontario?
For a typical Ontario household running three to five loads per week with a standard vent run, cleaning every one to two years is the standard recommendation. Annual cleaning makes sense if you have pets (pet hair dramatically increases lint accumulation), run more than five loads per week, have a long vent run (over 15 feet), or if your vent has multiple elbows that create lint traps. If your dryer is in a condominium or apartment with a shared vent stack, vent cleaning responsibility and frequency should be confirmed with your property manager — shared stacks require regular professional service. If you’ve never had your dryer vent cleaned and the dryer is more than three years old, cleaning it now is the right call regardless of whether you’re currently experiencing drying problems.
Book Your Dryer Repair Today
SureFit diagnoses and repairs all dryer makes and models — gas and electric — across Barrie, Newmarket, Bradford, Innisfil, Collingwood, Keswick, and surrounding Simcoe County and York Region communities. We’re TSSA certified for gas dryer work, and every repair carries a 90-day parts and labour warranty. If your dryer is taking two cycles to dry, the problem is diagnosable and, in most cases, very fixable.
Call (647) 977-2626 or book online. Service call is $85 + HST per appliance, waived when you approve the repair.
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