"My dryer used to take 45 minutes, now it takes 2 hours and clothes still come out damp." This is one of the most common service calls we run, and the diagnostic almost always lands on one of four causes. The good news: the most common cause is something you can check yourself before paying for a service visit.

This guide walks through the four root causes in honest frequency order, what you can verify yourself, and when to call us.

Cause #1: Vent obstruction (60-70% of "slow dryer" calls)

By a wide margin, the most common reason your dryer is taking 2 hours is that the exhaust vent is partially or fully blocked with lint accumulation. Heated air with moisture cannot escape efficiently; clothes stay damp; the thermostat keeps the heating element running but the cycle never completes the moisture sensor threshold.

Why this happens in LA specifically:

  • Long vent runs. Many LA homes (especially split-level Hollywood Hills, mid-century Westside) have dryer vents that run 15 to 25 feet through walls and ceilings before reaching the exterior vent cap. Long runs accumulate more lint over years.
  • Multiple bends. Each 90-degree bend in vent ductwork is a lint catchment point.
  • Outdoor vent caps that fail open or get blocked. Birds nest in unscreened vent caps; the screen itself eventually clogs with lint.
  • LA dust + lint accumulation. Dryers are connected to outdoor air through the vent path. Dust enters the system; combined with lint, accumulation rate is faster than rainier climates.

What you can check yourself

Three quick tests before calling:

  1. Clean the lint trap. If you have not cleaned it in over 2 weeks, do it now. A heavily-loaded lint trap is the most common cause of slow drying that resolves at zero cost.
  2. Check the outdoor vent cap. Walk outside and look at where the dryer vent exits the house. Open the flap (gently) with the dryer running. Should feel strong, hot air pushing out. If it feels weak or you cannot open the flap, you have an obstruction somewhere in the vent path.
  3. Disconnect the vent hose at the dryer. Pull the dryer away from the wall. Disconnect the flexible vent hose from the back of the dryer. Run a 5-minute load. If clothes dry normally without the vent connected, the obstruction is in the vent path, not the dryer.

Safety note: If you find the vent hose at the dryer is heavily clogged with lint, do not run the dryer with reduced exhaust until the vent is cleared. Dryer fires from lint accumulation are the leading cause of laundry room fires nationally. Disconnect or clear before continuing use.

Professional vent cleaning service runs $180 to $340 typical. We service this regularly across LA, OC, and Ventura. See dryer vent repair cost for full pricing.

Cause #2: Heating element failure (15-20% of slow dryer calls)

If your dryer is running but the air coming out is not hot, the heating element has likely failed. Symptom: cycle completes normally but clothes come out cool and damp. The thermostat is still functioning (so the cycle ends on time) but the actual heat is not being generated.

Two diagnostic checks:

  • Touch the front of the dryer mid-cycle. Should be warm. If cool throughout the entire cycle, heating element is the likely fault.
  • Check the air coming from the vent outdoors. If it is room temperature instead of hot, no heat is being generated.

Heating element replacement runs $180 to $340 depending on brand and access. On gas dryers the equivalent is the gas valve solenoid or the igniter (different parts, similar cost range). We carry common heating elements and gas-side parts on the truck for same-day swap.

Cause #3: Cycling thermostat drift (10-15% of slow dryer calls)

The cycling thermostat is what tells the heating element when to turn off (overheating prevention) and back on (continued heating). When this thermostat drifts low, the element shuts off too quickly; air does not stay hot enough; cycle takes longer to dry the load.

This is harder to self-diagnose because the symptoms overlap with vent obstruction (long cycles, damp clothes). The differentiator: if you have just had your vent professionally cleaned and the dryer is still slow, thermostat is the likely cause. We test thermostat continuity at the diagnostic.

Cycling thermostat replacement $180 to $280.

Cause #4: Drum support bearing wear (5-10% of slow dryer calls, secondary symptom)

Less common as a primary cause, but worth noting: when drum support bearings wear out, the drum drags. Drum motor uses more current to maintain rotation speed; in extreme cases the drum stops rotating during the cycle. Result: clothes do not tumble properly; surface area exposure to hot air drops; drying takes longer.

The diagnostic giveaway: audible scraping, squealing, or rumbling sound from the dryer during operation. If your dryer has gotten louder over the past 6 to 12 months and is also taking longer, the bearings are likely the cause. Bearing replacement $260 to $440 plus belt replacement (commonly done together).

When it's not the dryer (and we tell you so)

Two scenarios where the dryer is fine and the problem is upstream:

  • Overloaded loads. Stuffing the dryer with a king-size comforter and 3 days of laundry simultaneously will result in a 2-hour cycle on any dryer. Not a service call. Run multiple smaller loads.
  • Wet-when-loaded fabric. Clothes that came out of the washer with too much water (washer failed to spin properly, drain pump partially clogged) will take longer to dry. The fault is the washer, not the dryer. Symptom: you are wringing water out of clothes when you transfer them.

We diagnose both of these at the visit and charge the $89 diagnostic fee even when the dryer is fine, because the visit is what surfaces the actual issue. We do not bill you for parts on a unit that does not need them.

Field observations from LA service

Patterns we see consistently across LA-area dryer service calls:

  • Year 6 to 8 dryers in LA homes are due for vent cleaning. Even with regular lint-trap maintenance, the vent path itself accumulates lint over years. Annual or biannual professional cleaning extends dryer life and improves efficiency.
  • Stackable washer-dryer units (common in West Hollywood condos, Beverly Hills guest houses, Newport Beach beachfront apartments) face vent constraints from limited installation space. We service these with attention to confined-space access.
  • Gas dryers are common in pre-1990 LA homes; electric dryers more common in newer construction. Different parts pipelines, different diagnostic. Volunteer the fuel type when you call.
  • Brand-specific patterns: Whirlpool (and family: Maytag, Amana, KitchenAid) heating elements run year 8 to 12 typical. LG and Samsung heating elements year 6 to 9. Bosch (less common in dryers; more common in washers) moisture sensors particularly sensitive to lint contamination.

What to do right now

If your dryer is taking 2 hours, sequence:

  1. Clean the lint trap thoroughly. Pull lint screen, wipe with damp cloth, vacuum the slot the screen sits in. Run one normal load.
  2. Check outdoor vent cap. Should feel strong hot air pushing out during dryer operation.
  3. Disconnect-test the vent. If clothes dry normally without the vent connected, the issue is the vent path.
  4. If still slow after cleaning vent path, call us. Heating element, thermostat, or drum bearing diagnosis is what we do at the $89 visit.

BHGS #A49573, BBB A+ accredited, 90-day warranty on every repair. Same-day across LA, OC, Ventura. See dryer repair service for the full residential dryer diagnostic page or dryer vent repair for the cleaning service specifically.