Quick verdict
A corded 16 inch dethatcher with a 15 amp motor rated up to 3,300 rpm, a 24-tine dethatching head, a 20-blade scarifying head, five depth positions from a quarter inch above grade to half an inch below, a detachable bag and a two-year warranty. It suits a small to mid-size lawn within reach of an outlet. The caveat is the cord, and a bag that will fill fast on a thatchy lawn.
Strengths
- 15 amp motor, the most a standard outlet supplies
- 16 inch path is wider than most corded rivals
- Both a 24-tine dethatching head and a 20-blade scarifying head included
- Five depth positions, +1/4 to -1/2 inch
- Automatic overload shutdown protects the motor
- Two-year warranty
Weaknesses
- Corded; needs a heavy-gauge extension cord
- Bag capacity and machine weight are not stated
- Bag fills quickly on a thick lawn
- Head swap is not described as tool-free
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this dethatcher is for
A lawn that feels spongy underfoot and sheds water instead of soaking it in has a thatch layer, and a spring rake across a few thousand square feet is a back injury waiting to happen. The WEN DT1516 is a corded 16 inch machine with two interchangeable heads: 24 steel spring tines for pulling thatch out of the turf and 20 scarifying blades for slicing shallow grooves that open the soil before overseeding. It is for the owner of a small to mid-size lawn within reach of an outdoor outlet who wants both jobs done by one tool.
This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.
What you get
The box holds the machine, the dethatching head with 24 steel tines, the scarifying head with 20 blades, a detachable thatch collection bag and the handle hardware. The motor is a 15 amp electric unit WEN rates at up to 3,300 rpm across a 16 inch clearing path. Depth is set by a five-position adjustment that runs from a quarter inch above the surface to half an inch below it. An automatic overload shutdown protects the motor, and WEN backs the tool with a two-year warranty. The listing does not state the bag volume, the machine’s weight or the cord gauge it needs.
Dethatching and scarifying performance
A 15 amp motor is the most a standard US outlet supplies, and it is the right size for pulling a 16 inch spring-tine head through a thatchy lawn. Owners of corded dethatchers in this class describe the tines lifting a startling amount of dead material on the first pass, enough that the bag is the limiting factor and raking the rows afterwards is normal. The scarifying head is the harder-working of the two: 20 blades cutting up to half an inch into the soil loosen compaction and leave grooves that seed falls into, which is why it is run before overseeding and not as a weekly job. Set the depth shallow on the first pass and lower it a notch at a time; a half-inch cut into a dry, compacted lawn stalls any corded machine, and the overload shutdown exists for that moment.
Depth settings and the two heads
The five positions cover the useful range. The plus-quarter-inch setting lets the tines skim the thatch without touching soil, which is the right choice for a lawn in spring that only needs a light comb-out. The minus half-inch setting is for scarifying before a fall overseed. Swapping heads is a hardware job rather than a tool-free click on most machines of this type; the listing does not describe the mechanism, so expect to use a wrench and plan to change heads once per session rather than back and forth.
Power cord and runtime
Corded means unlimited runtime and no battery to buy, but it also means managing an extension cord across the lawn. A 15 amp tool needs a heavy cord: 12 gauge for runs much beyond 50 feet is the usual guidance for tools of this draw, since a thin cord drops voltage, heats up and makes the motor struggle and trip. Work away from the outlet in strips and keep the cord on the finished side. Lawns beyond the reach of a 100 foot cord are the point where a cordless or tow-behind dethatcher makes more sense.
Build and handling
The housing is plastic over a steel tine and blade set, which is the norm for corded dethatchers and keeps the weight manageable for lifting over a curb. The collection bag detaches for emptying, and a recurring complaint across bagged dethatchers is that the bag fills within a short run on a thick lawn; many owners leave the bag off and rake the rows instead. WEN does not state the bag’s capacity. The 16 inch path is a few inches wider than the common 13 to 15 inch competitors, which saves passes on a mid-size lawn.
Living with it
Clear the tines and blades after every use, dry the heads and store the machine indoors; spring tines rust where grass juice dries on them. Replacement tines and blades for machines of this type are consumables after a few seasons on a gritty lawn. Dethatch once in spring or fall when the grass is actively growing so it recovers, water afterwards, and overseed straight after scarifying while the grooves are open. The two-year warranty is longer than much of the budget corded class offers.
Alternatives to Consider
The Sun Joe AJ805E is the closest rival, a 13 amp 15 inch 2-in-1 corded dethatcher and scarifier with a strong owner following. The Greenworks 40V 15 inch dethatcher and scarifier drops the cord for owners already on that battery platform. For a large or thatch-heavy lawn, a tow-behind spring-tine dethatcher behind a tractor covers acreage a corded machine cannot.
Verdict
Buy the WEN DT1516 if your lawn is within an extension cord of an outlet, you want both a dethatching and a scarifying head with a 16 inch path and a two-year warranty, and you can accept emptying a bag often. Skip it if the lawn is far from power or over about a third of an acre, where a battery or tow-behind dethatcher is the saner choice.
Full specifications
WEN DT1516 16-Inch 15-Amp 2-in-1 Electric Dethatcher and Scarifier with Collection Bag FAQs
WEN does not state a gauge in the listing. For a 15 amp tool the usual guidance is a 12 gauge outdoor cord for runs beyond about 50 feet, since a thin cord drops voltage and makes the motor run hot and trip.
Once a year in spring or early fall when the grass is growing actively, and only when the thatch layer is more than about half an inch thick. Scarify before overseeding.
The listing does not give a volume. Owners of bagged dethatchers generally report it fills within a short run on a thick lawn; many leave it off and rake the rows instead.
WEN says the scarifying head helps aerate. It slices shallow grooves up to half an inch deep that loosen the surface and let seed, air and water in, which is different from core aeration that pulls plugs.
