The answer depends on which kind of dryer you own, and the gap between them is the most useful thing on this page. On a conventional vented dryer, electric or gas, the most expensive component is the electronic control board at $320 to $600, almost entirely part cost, with the drum and rear bearing assembly close behind at $350 to $650 because that one is mostly labor. Neither is high enough to end a dryer worth keeping. On a heat pump dryer the picture changes completely: a failed sealed refrigeration system costs $700 to $1,300, requires EPA Section 608 certification to open, and on a unit worth $1,200 that is a genuine replace-or-repair decision.
The broader point is that conventional dryers have no single component expensive enough to condemn a sound machine. That is unusual among major appliances and it is why dryers are so repair-favourable.
Dryer Component Costs, Highest to Lowest
| Part | Installed cost | Why it costs what it does |
|---|---|---|
| Heat pump sealed system | $700 – $1,300 | Refrigeration work; EPA 608 certification required |
| Drum and rear bearing assembly | $350 – $650 | Full teardown; mostly labor |
| Electronic control board | $320 – $600 | Almost entirely part cost; often OEM-only |
| Drive motor | $300 – $520 | Moderate part cost, moderate access |
| Blower wheel and housing | $250 – $450 | Access through the cabinet |
| Gas valve coils | $240 – $420 | Licensed gas fitter labor rate |
| Drum seal or baffle set | $220 – $420 | Teardown, inexpensive parts |
| Heating element | $220 – $380 | Accessible; common repair |
| Drum support rollers (set) | $220 – $380 | Replaced as a set |
| Thermal fuse | $180 – $280 | Cheapest common repair |
Compare that top figure with a washing machine, where a sealed-tub bearing assembly runs $600 to $1,100, or a refrigerator, where a sealed system reaches $1,200. A vented dryer simply has nothing in that class.
Heat Pump Dryers Are a Different Calculation
Heat pump dryers are ventless and recirculate air through a refrigeration circuit to condense moisture out. They are genuinely more efficient and they solve the long-vent-run problem that plagues Boston triple-deckers, which is why we see more of them every year. But they carry refrigeration risk that a vented dryer does not:
- The sealed system is the expensive failure. $700 to $1,300, and it requires certified recovery, leak detection, evacuation, and a weighed-in charge.
- They need EPA 608-certified service, which narrows who can legally work on them.
- Lifespan is shorter at eight to twelve years against twelve to fifteen for vented, because the refrigeration circuit becomes the limiting component.
- Routine parts cost the same, though. A thermal fuse or a door switch on a heat pump dryer is an ordinary repair.
So the honest summary: a heat pump dryer is a good choice when venting is genuinely difficult, and you should expect the sealed system to be the decision point around year ten.
How to Avoid the Expensive Failures
Both of the top conventional repairs have a maintenance story:
- Keep the vent clear. Restricted airflow raises operating temperature, and sustained heat is what degrades control boards and shortens element life. This single habit protects the most expensive part on the machine. See why does my dryer take so long to dry.
- Act on rumbling early. Worn drum rollers left running eventually damage the drum and the rear bearing, turning a $280 roller set into a $550 drum assembly. Noise is a cheap warning.
- Do not overload. Excess drum weight accelerates roller and bearing wear.
- Clear coins and buttons from the blower. A rattle left alone cracks the blower wheel.
- On heat pump models, clean the condenser filter at the interval the manual specifies. A fouled condenser makes the compressor work harder, and the compressor is the expensive part.
Is the Expensive Repair Still Worth It?
On a vented dryer, almost always yes. A $550 drum and bearing job on an eight-year-old Speed Queen or a well-built Whirlpool is sound, because the machine has years left and replacement installed in Boston is often $1,200 or more once venting and delivery are counted.
On a heat pump sealed system, weigh it against the unit value: worth doing on a $2,200 Miele or Bosch at year six, not worth doing on a $1,100 unit at year ten. The age thresholds are on are dryers worth fixing, and full component pricing on how much does it cost to repair a dryer.
For a diagnosis, book through washer and dryer repair.