The dryer takes twice as long to dry clothes. it is 3 years old

A clogged or partially clogged vent will reduce the air flow through the dryer and greatly increase the drying time. I assume you checked the drying time again after you cleaned the vents. Have you also checked that the lint trap is clean? Make sure no lint has found it's way around the lint trap and has jammed the intake.

I would be very suspicious of the 240 v breaker double breaker feeding the dyrer; maybe the dryer is only running on 120 vac instead of the full 240vac. The motor would be getting full power, but the heating element would only be getting half power.

Hi,

If your dryer is not drying like it once did or if you just have not taken the time to give yourself a clean dryer in a long time then you need to do that. At least once a year the dryer cleaning should take place. Lint build up in the dryer duct is one of the main causes for your dryer to fail.

Here is the rest of this tip about Dryer Maintenance

heatman101

first make sure your vents are not clogged, inside and outside your home,, if they are free make sure the vent hose is not kinked when the unit is pushed back,, if all is good take the vent off the back and turn it on and make sure it is blowing air out while it is running

Hi,

If your dryer is not drying like it once did or if you just have nottaken the time to give yourself a clean dryer in a long time then youneed to do that. At least once a year the dryer cleaning should takeplace. Lint build up in the dryer duct is one of the main causesfor your dryer to fail.

Here is the rest of this tip about DryerMaintenance

heatman101

Make sure you check your exhaust line and where the air blows to the outside. If your exhaust vent or hose is bent or restricted it will take a very long time to dry the clothes. Sometimes the vent flap on the outside exhaust is stuck shut. Clear dryer exhaust venting is critical for proper operation. Several companies offer a vent cleaning service where they completely clean out the exhaust lines.

Them coils is overheating Take a look

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Do you know if the dryer vent is free of obstructions?Check outside where the dryer vents outside ,and see if the air is weak or flowing freely.If it is not clogged the air should be pretty strong from the vent outside.If it has blockage it will definitly take longer to dry your clothes.

The problem may not be your dryer - try running the wash machine spin cycle twice before putting the clothes in the dryer.

be 100% sure there is a good air flow outside the house where the dryer vents out this is the most comon problem. Next check in side the dryer drum at the back give a slight tug on the drum toward the front of the dryer you are looking to mack sure there is not a gap between the bulkhead and drum felt. If there is a good seal there then I would repace the Theremostat on the blower housing this is the cycle theremostat

UNPLUG THE DRYER THEN PRESS THE MORE TIME , AND THE LESS TIME BUTTONS AND THE POWER BUTTON FOR ABOUT 10 SECONDS. THEN WAIT FOR 3-5 MINUTES THEN PLUG THE DRYER BACK UP . SEE IF THAT WORKS BY THAT RESET.