When your dryer tumbles forever without drying or your fridge turns into a cooler that can’t decide what cold means, the usual suspects are thermostats, not the whole appliance. Swapping the right temperature-control part is often the difference between a working machine and an expensive service call. This lineup covers the genuine OEM and aftermarket options most homeowners actually search for, so you can match the part number to your model and get back to a normal laundry routine.
A Quick View Of The Lineup
Whirlpool 67006387 Defrost Thermostat
Seentech 3977767 Dryer Thermostat
Seentech 3387134 Dryer Cycling Thermostat
Seentech 3977393 Dryer Thermal Cut-off Kit
Whirlpool 503979 Thermostat
Whirlpool 8573028 Fixed Dryer Thermostat
Whirlpool WP3387134 OEM Dryer Cycling Thermostat
Seentech WP8557403 High Limit Thermostat & Thermistor
WP2198202 Whirlpool OEM SxS Refrigerator Thermostat
Whirlpool LA-1053 Dryer Fuse Kit
What Each Pick Brings To The Table
Refrigerators that frost up in the freezer compartment or feel warm despite a running compressor often trace back to a single, inexpensive part: the defrost thermostat. The Whirlpool 67006387 Defrost Thermostat is a genuine OEM replacement designed specifically for this kind of repair, and it sits in the same family of components as the cycling thermostats further down this list.
Where aftermarket parts sometimes drift in tolerance, an OEM thermostat tends to match the original calibration closely, which matters when a few degrees decides whether coils stay clear or frost over. For most homeowners tackling a single refrigerator repair, this is a low-risk part to order once the model number is confirmed.
What Helps Most
- Genuine Whirlpool OEM build, so fit and calibration match the original part.
- Targets the most common frost-buildup failure point in refrigerators.
- Compact size makes access behind the rear panel straightforward in most models.
- Sensible first repair before considering a full appliance replacement.
Things To Consider
- You will need basic hand tools and a multimeter to test the old thermostat before swapping.
- Refrigerator defrost repairs often involve pulling the back panel, which adds time compared with a simple dryer swap.
Who It Suits Best
Homeowners with a frost-heavy freezer or warm fridge who can confirm the model number and handle light disassembly.
Consider Something Else When
Side-by-side owners should look at the WP2198202 Whirlpool OEM SxS Refrigerator Thermostat, which is tailored to that configuration.
Aftermarket replacements earn their keep when they cover a long list of model numbers without sacrificing basic reliability. The Seentech 3977767 Dryer Thermostat fits that brief, working across Whirlpool, Kenmore, Roper, Estate, Inglis, Crosley, Amana, Admiral, and Magic Chef dryers, and it cross-references several legacy part numbers including 3399693 and WP3977767VP.
For households with a dryer that is older than the warranty window, this kind of broad compatibility is often more valuable than a single-brand OEM part. You may find that one sealed bag covers multiple machines in the household, especially in homes that have rotated through several appliances over the years.
Positive Points
- Cross-brand compatibility covers most legacy Whirlpool-family dryers.
- Replaces multiple legacy part numbers, simplifying model lookups.
- Useful across households with more than one matching dryer model.
- Marketed as a direct-fit replacement, so installation is usually a matter of swapping leads.
Worth Noting
- After-market tolerances can vary, so it is worth testing the old thermostat with a multimeter before assuming the replacement is the fix.
- Documentation with this listing is light, so verify the model number against the part number before ordering.
Feature Snapshot
Made For
Owners of older Whirlpool-family dryers who want one part to cover several model references and the skill to verify the diagnosis.
Not Your Match When
Strict OEM-only households should consider the Whirlpool 503979 Thermostat, which carries the Whirlpool brand stamp directly.
The cycling thermostat is the part of a dryer that decides when to keep the heater on and when to pause, which is what gives even the cheapest dryer a stable drum temperature. The Seentech 3387134 Dryer Cycling Thermostat holds the drum at roughly 155°F and cycles power to the heater to maintain that band, protecting delicate loads from scorched spots and the machine from runaway heat.
Compared with the Seentech 3977767 earlier in this list, which covers a different thermostat role, this part is the one to reach for when clothes come out under-dried or the drum runs hot enough to feel it through the door. It also replaces several part numbers including 306910, 3387135, 3387139, and WP3387134VP.
The Case For It
- Targets 155°F cycling, a temperature that handles most household fabrics safely.
- Cross-references multiple legacy part numbers for easier model matching.
- Helps restore even drying when clothes feel damp in spots or scorch in others.
- Compatible with Whirlpool, Kenmore, Maytag, KitchenAid, Roper, Crosley, and Estate dryers.
Points To Note
- Confirm the part number against the model number before ordering, since several adjacent numbers look similar.
- Reaching the cycling thermostat typically means removing the back panel, so allow time for that step.
Quick Facts
Best Suited To
Households whose dryer leaves some loads damp and others scorched, which usually points straight to a cycling thermostat issue.
Look Elsewhere When
Shoppers who want a Whirlpool-branded OEM cycling thermostat should choose the Whirlpool WP3387134 OEM Dryer Cycling Thermostat further down the list.
The thermal cut-off fuse is the part of a dryer you never want to test by accident, because it exists to stop the heater the moment the cabinet crosses a danger threshold. The Seentech 3977393 Dryer Thermal Cut-off Kit trips at 309°F, cutting power to the heating element when airflow drops or the cycling thermostat sticks.
Where the Seentech 3387134 cycling thermostat handles day-to-day temperature control, this kit is the safety net behind it. Common symptoms include a dryer that starts but produces no heat, runs briefly then shuts off mid-cycle, or takes several rounds to fully dry a normal load.
Everyday Advantages
- 309°F trip point protects the dryer and surrounding cabinetry from overheating.
- Covers Whirlpool, Kenmore, Maytag, and Roper dryers under one part number.
- Replaces several part numbers including AP3094244, 3399848, and AH334299.
- Single-fuse kit keeps the swap focused, without an overflowing parts bag.
Room For Improvement
- When this fuse has blown, the underlying airflow problem should be diagnosed too, since simply swapping the fuse can lead to repeat failures.
- Some repair jobs call for replacing the high-limit thermostat in the same visit, which adds cost.
Whose Shelf It Belongs On
DIYers troubleshooting a dryer that runs but no longer heats, who are comfortable inspecting the vent and cycling thermostat as part of the repair.
A Better Fit Elsewhere
Sensor-style dryers with a thermistor are better matched to the Seentech WP8557403 High Limit Thermostat and Thermistor combo.
When a dryer has been a quiet workhorse for years, the part you want to put back in is the one that was designed alongside it. The Whirlpool 503979 Thermostat is a genuine Whirlpool replacement, which keeps the original engineering intent intact and avoids the small calibration drift that aftermarket alternatives sometimes introduce.
It serves the same general role as the Seentech 3977767 covered earlier, but with the brand-stamped fit and quality. For households that prefer to keep everything on the OEM track, this is the conservative, low-drama choice.
The Practical Payoff
- Genuine Whirlpool OEM construction matches original factory tolerances.
- Maintains long-term reliability in dryers already running on Whirlpool components.
- Simple swap, since the form factor mirrors the original part directly.
Honest Caveats
- OEM parts often cost more than aftermarket alternatives with similar fit claims.
- Documentation with this listing is sparse, so confirm the part number against your model before ordering.
Right Fit For
Owners committed to keeping their dryer fully OEM, especially for older machines where every other part is already Whirlpool-branded.
Swap It Out When
Shoppers who want broader model coverage at a lower cost can pick the Seentech 3977767 Dryer Thermostat instead.
Not every dryer needs a cycling thermostat. Some Whirlpool dryers use a fixed thermostat that simply cuts the heater at a set temperature and lets the timer do the rest. The Whirlpool 8573028 Fixed Dryer Thermostat fills that role, with a small form factor that fits where space is tight behind the heater box.
Coming in at roughly 5.4 inches long by 4.5 inches wide and 2.2 inches tall in its packaging, the part is compact enough to slot into crowded dryer cabinets without forcing other components out of place.
Strengths Worth Knowing
- Genuine Whirlpool OEM fixed-temperature thermostat.
- Compact packaging footprint suits dryers with limited service access.
- Direct-fit replacement that matches the original part geometry.
Less Ideal Details
- Fixed thermostats offer less fine-grained temperature control than cycling units like the Seentech 3387134.
- Confirming the part is correct requires checking the model diagram, since fixed and cycling thermostats are not interchangeable.
Technical Highlights
Perfect Match For
Owners of dryers that use a fixed-temperature thermostat and want a direct OEM swap without the cycling part family.
Reach For A Different Pick When
Dryers that need a cycling thermostat should use the Seentech 3387134 Dryer Cycling Thermostat covered earlier in this list.
For homeowners who only want to install Whirlpool-engineered parts back into a Whirlpool dryer, the WP3387134 is the cycling thermostat to look at first. Built to Whirlpool’s own engineering standards, it monitors and regulates the drum temperature and tends to be the right call when the dryer leaves clothes damp in places, scorch in others, or shuts off before finishing.
It is essentially the OEM counterpart to the Seentech 3387134 covered earlier, and it cross-references the same family of part numbers including 306910, 3387135, and 3387139. Access is through the large rear panel, which is a service step most owners can manage with basic hand tools and a bit of patience.
Bright Spots
- Whirlpool OEM build, engineered to original factory specs.
- Restores drum temperature regulation when loads come out unevenly dried.
- Cross-references multiple legacy part numbers for easier matching.
Small Caveats
- OEM pricing is usually higher than aftermarket alternatives like the Seentech 3387134.
- Replacing the thermostat requires removing the rear panel, so plan on 20 to 40 minutes of service time.
Who Will Love This
Owners who want a brand-matched OEM cycling thermostat and are willing to pay a little more for the assurance of original engineering.
Skip It When
Budget-focused shoppers will find the Seentech 3387134 Dryer Cycling Thermostat covers the same role at a lower cost.
Newer dryers do not just measure temperature with a bimetal strip, they read it with a thermistor, a small resistor that changes value with heat. The Seentech WP8557403 bundles a high-limit thermostat (rated L295-80F) and a thermistor sensor in one package, so a single service visit can replace both the safety cutoff and the temperature sensor that the control board relies on.
It cross-references 1180102, AP6013164, PS11746386, and EAP11746386, which simplifies the lookup when the model number pulls up several related replacements. For sensor-driven dryers, this combo is often closer to a real fix than a single high-limit swap.
A Few Highlights
- Two-part kit covers the high-limit thermostat and thermistor in one order.
- L295-80F rating suits mid-range dryer operating temperatures.
- Cross-references multiple part numbers, including 1180102 and AP6013164.
- Compatible with Whirlpool and Kenmore dryers using sensor-based control.
Areas To Watch
- Sensor-based dryers require a working control board to read the thermistor, so a board fault can mimic a sensor failure.
- Installation calls for careful handling of the thermistor leads, since they are more delicate than standard thermostat terminals.
Feature Card
Built With In Mind
Owners of sensor-driven Whirlpool and Kenmore dryers that read temperature through a thermistor rather than a bimetal strip.
Where A Sibling Pick Shines
Older dryers without a thermistor are better served by the Seentech 3977393 Dryer Thermal Cut-off Kit covered earlier in the list.
Side-by-side refrigerators have a different way of moving cold air than top-freezer models, and the thermostat has to match. The WP2198202 is a genuine Whirlpool OEM part built for that configuration, and it is the right first stop when a Whirlpool side-by-side starts running constantly, refuses to come on, or cannot hold the set temperature.
Compared with the Whirlpool 67006387 at the top of this list, which handles defrost cycles more broadly, this part is purpose-built for the temperature regulation role in a side-by-side cabinet. It does require some disassembly, so plan on a quiet afternoon and a cleared kitchen floor before diving in.
What Stands Out
- Genuine Whirlpool OEM part tailored to side-by-side refrigerators.
- Targets the common “compressor won’t stop” failure mode in SxS models.
- Engineered to Whirlpool’s own calibration standards.
Where It May Fall Short
- Installation requires unplugging the refrigerator, pulling panels, and basic disassembly, so set aside time for it.
- Documentation assumes some prior repair experience, so first-time DIYers may want a service video alongside the part.
Who Should Grab It
Owners of a Whirlpool side-by-side refrigerator whose temperature regulation has gone off, and who are comfortable with mid-level disassembly.
Another Choice May Suit
Top-freezer or single-door models are better served by the Whirlpool 67006387 Defrost Thermostat earlier in this list.
Some repairs come down to a small fuse tucked near the heater box, and the Whirlpool LA-1053 Fuse Kit is built for exactly that job. It is a genuine Whirlpool replacement with compatibility listed for Maytag models including ADE20N3V, ADE20K4A, ADE20K3W, and ADE20K3CKDW, which makes it a useful kit to keep on the shelf for an older dryer in the family.
Compared with the Seentech 3977393 earlier in the list, which targets a 309°F thermal cut-off in mid-generation dryers, this kit leans toward older Maytag-built machines that use a similar fuse-based safety circuit. For first-time DIYers, a fuse swap is a manageable introduction to dryer repair.
A Few Strong Suits
- Genuine Whirlpool OEM fuse kit built for older Maytag dryers.
- Cross-compatible with several ADE-series Maytag model numbers.
- Good starter repair for a dryer that runs but produces no heat.
Practical Considerations
- Older dryers may also have a failing cycling thermostat alongside a blown fuse, so check both before assuming the fuse is the only problem.
- Fuse replacements do not address root-cause airflow issues, which can cause the new fuse to fail again.
The Right Fit
Homeowners with an older Maytag-built dryer from the ADE series that runs but no longer heats, especially first-time DIYers looking for a manageable job.
Consider Something Else When
Newer Whirlpool-family dryers are better matched to the Seentech 3977393 thermal cut-off kit covered earlier in the article.
What To Check Before You Order A Whirlpool Thermostat
Start with the model number, not the symptom. The model and serial plate on most Whirlpool dryers and refrigerators sits either inside the door frame, on the back, or along the cabinet edge, and that exact string is the only way to know which part numbers actually fit. A cycling thermostat and a fixed thermostat can look almost identical from a distance but play completely different roles, so the model number is the real filter.
Think about the part family, not just the part. Cycling thermostats handle day-to-day drum temperature, fixed thermostats are simpler on-off switches, high-limit thermostats and thermal fuses are safety cutoffs, and thermistors are sensors read by the control board. Match the symptom to the family first, then the part number second.
Check voltage and sensor type before you buy. Older dryers use straightforward 120/240V thermostats with two wire leads, while newer sensor-driven dryers use thermistors with smaller gauge leads. Putting the wrong family into the wrong machine can either do nothing or cause repeat failures.
Plan for a 20 to 60 minute repair, depending on access. Reaching a refrigerator thermostat often means pulling the back panel and working around the compressor area, while a dryer swap usually means removing the rear panel or the heater box. Most owners with a socket set, a multimeter, and a phone light can handle the job.
Key Considerations Across These Picks
Common Shopping Slip Ups
The most common mistake is matching a part by appearance instead of by part number, which is how an aftermarket cycling thermostat ends up next to a fixed-thermostat housing that does not fit. Always cross-reference the part number against the model number from the data plate. A second slip is replacing only the fuse without diagnosing why it blew, which usually means a clogged vent or a sticking cycling thermostat is waiting to take the new part out too.
Where The Extra Money Goes
Genuine Whirlpool OEM parts, like the WP3387134 cycling thermostat and the WP2198202 refrigerator thermostat, cost more because they were engineered to the same tolerances and materials as the original factory fit. That premium pays off most on newer sensor-style dryers and on side-by-side refrigerators, where a small calibration drift can show up as damp clothes or a warm fridge. For older dryers with simpler wiring, a well-reviewed aftermarket option like the Seentech 3977767 or 3387134 often closes the gap for less.
Frequently Asked Questions
How do I know if a Whirlpool thermostat is the actual problem?
Look at the symptoms first. A dryer that runs but does not heat, or heats unevenly, often points to a cycling or thermal thermostat. A refrigerator that frosts up or runs constantly usually points to a defrost or refrigerator thermostat. Confirm with a multimeter, since continuity readings tell you whether the part is actually open.
Are aftermarket Whirlpool thermostats as reliable as OEM?
For most mid-range repairs, a well-reviewed aftermarket part holds up fine, especially on older dryers with simple wiring. The trade-off shows up on newer sensor-style dryers and on side-by-side refrigerators, where OEM tolerances matter more and the price gap narrows once a second visit is factored in.
Can I install a Whirlpool thermostat myself?
Dryer thermostat swaps are usually within reach for someone with basic hand tools, a multimeter, and a service video for their model. Refrigerator thermostat swaps take a bit longer, since access usually means pulling panels and working around the compressor area. Either way, unplug the appliance before starting.
How do I find the right part number for my Whirlpool appliance?
Check the model and serial plate, usually inside the door frame or along the cabinet edge, then enter that string into the retailer’s parts lookup. The model number is the reliable filter, since a single Whirlpool dryer family can use several different thermostat part numbers across model years.
How long should a replacement Whirlpool thermostat last?
In a healthy appliance with clean vents and good airflow, a quality thermostat typically lasts many years. The two biggest reasons for early repeat failure are restricted dryer vents and neglected condenser coils in refrigerators, both of which should be addressed at the same time as the part swap.
Wrap Up
The right Whirlpool thermostat is the one that matches your model number, fits the symptom, and lands in the part family your machine actually uses. Once those three filters line up, the swap itself is a manageable weekend repair for most owners, and it often brings an appliance back from the edge of replacement. Take an extra ten minutes to confirm the model number and clear any airflow restrictions, and the new part should give you many more loads and many more cold groceries down the road.
