Waste King L-8000 Review — Best Value 1 HP Disposal
The Waste King L-8000 is a 1 HP continuous-feed disposal with a 2800 RPM permanent magnet motor, priced at $150-$200 at retail. Its 20-year limited warranty is the longest in the residential garbage disposal industry. For the price of a mid-range InSinkErator, you get maximum horsepower, stainless steel grind components, and warranty coverage that outlasts most mortgages.
We reviewed the specs, compared it against InSinkErator’s lineup, and dug through homeowner feedback to see whether the L-8000 lives up to the numbers. For a full brand-by-brand comparison, see our best garbage disposal guide.
Full specifications
| Spec | Value |
|---|---|
| Model | L-8000 |
| Horsepower | 1 HP |
| Motor type | Permanent magnet, 2800 RPM |
| MSRP | $291.45 |
| Street price | $150-$200 |
| Warranty | 20-year limited (in-home service) |
| Sound insulation | SoundSHIELD |
| Grind chamber | Stainless steel |
| Feed type | Continuous |
| Mounting | EZ Mount (twist-lock) |
| Power cord | Pre-installed |
| Septic compatible | Yes |
| Reset button | Yes |
The MSRP and street price are worth noting separately. Waste King lists the L-8000 at $291.45, but online and in-store prices consistently run $150-$200. Comparison shoppers who see the MSRP listed next to an InSinkErator Evolution Compact at $200-$250 might think the two are priced similarly — they are not. Full specs are on the Waste King official product page.
What Makes the L-8000 Different
2800 RPM motor. The L-8000 has the fastest motor in any residential garbage disposal. At 2800 RPM, the permanent magnet motor spins 63% faster than InSinkErator’s 1725 RPM induction motors. Speed matters with fibrous foods: celery, corn husks, and asparagus get shredded before the fibers can wrap around the impellers. That wrapping is the number one cause of jams in slower-spinning disposals.
20-year warranty. No other residential disposal comes with a warranty this long. InSinkErator’s maximum is 8 years on the Evolution Excel ($350-$400). Waste King’s own L-3200 (3/4 HP) gets 8 years, and the L-5000TC (3/4 HP batch feed) gets 10. The L-8000’s 20-year coverage includes in-home service, meaning a technician comes to you rather than you shipping the unit somewhere.
SoundSHIELD insulation. Only three Waste King models include SoundSHIELD: the L-3200, L-5000TC, and L-8000. Budget Waste King models (L-111 at $124, L-1001 at $137) have no sound insulation. The difference is noticeable — SoundSHIELD reduces grinding noise during operation, though the initial startup burst is still audible.
Stainless steel grind components. The L-8000 uses stainless steel grind elements, which resist corrosion better than the galvanized steel found in budget models (L-111, L-1001). In a high-moisture environment like a kitchen sink, stainless holds up for years longer before pitting or degrading.
What We Found
At $150-$200, the L-8000 costs about the same as a 3/4 HP mid-range disposal from InSinkErator, but delivers 1 HP, faster RPM, and 12-16 more years of warranty.
The permanent magnet motor starts faster than InSinkErator’s induction motors. There is less lag between flipping the switch and reaching full speed, which helps with quick bursts of grinding during meal prep. The EZ Mount twist-lock system makes installation straightforward — Waste King ships every model with a pre-installed power cord, so cord-connected setups need no electrical work beyond plugging it in.
Where the L-8000 falls short of the InSinkErator Evolution Excel ($350-$400) is noise. The Evolution Excel uses three-stage grinding with SoundSeal insulation — it is noticeably quieter than the L-8000 during operation. SoundSHIELD reduces noise, but it does not match SoundSeal. If absolute quiet matters more than price, the Evolution Excel wins that specific comparison. See our InSinkErator vs Waste King comparison for the full breakdown.
The torque difference matters for certain foods. InSinkErator’s induction motors generate more torque per rotation at 1725 RPM, which means they push through very hard objects (large bone fragments, frozen items) with more force. The L-8000 compensates with speed — at 2800 RPM, it shreds most items before torque becomes a factor. In practice, both handle typical household food waste without issues.
How It Compares
| Model | HP | Price | RPM | Warranty | Motor | Insulation |
|---|---|---|---|---|---|---|
| Waste King L-8000 | 1 | $150-$200 | 2800 | 20 years | Permanent magnet | SoundSHIELD |
| InSinkErator Evolution Compact | 3/4 | $200-$250 | 1725 | 4 years | Induction | SoundSeal |
| InSinkErator Evolution Excel | 1 | $350-$400 | 1725 | 7 years | Induction | SoundSeal |
| InSinkErator Badger 5 | 1/2 | $80-$120 | 1725 | 2 years | Induction | None |
| Waste King L-3200 | 3/4 | $230 | 2700 | 8 years | Permanent magnet | SoundSHIELD |
Against the Evolution Compact: the L-8000 costs less, delivers more HP, and has a warranty five times longer. The Evolution Compact is quieter and works with existing InSinkErator mounts.
Against the Evolution Excel: the L-8000 costs less than half the price with nearly three times the warranty length. The Excel is substantially quieter and has higher torque. It depends on whether you value silence over savings.
Against the Badger 5: different categories entirely. The L-8000 has double the HP, 10x the warranty, and stainless steel grind components versus galvanized. It also costs $30-$80 more. Read our InSinkErator Badger 5 review if the budget is firm at $80-$120.
InSinkErator publishes full specs on their official product page.
Common issues
EZ mount compatibility
The L-8000 uses EZ Mount (twist-lock) hardware. Homes with an existing InSinkErator 3-bolt mount need to swap the mounting ring when switching to Waste King. This adds 15-30 minutes to the installation but is not difficult. The Waste King 9980 (same 1 HP specs as the L-8000) uses a 3-bolt mount that drops directly into an InSinkErator mount without modification. See our disposal installation guide for details on both mount types.
Startup noise
SoundSHIELD insulation reduces grinding noise during steady operation, but the initial startup burst — when the motor spins up from zero to 2800 RPM — is still noticeable. This is a characteristic of high-RPM permanent magnet motors, not a defect. After the first half-second, noise levels drop to normal.
MSRP confusion
The listed MSRP of $291.45 makes the L-8000 look expensive next to InSinkErator models priced at $200-$250. Actual retail prices run $150-$200 at most stores. Shoppers comparing prices should use street price, not MSRP.
Is the L-8000 Worth It?
Yes, the L-8000 is worth it if:
- You want maximum grinding power at a mid-range price
- Warranty length matters (20 years is unmatched)
- You process fibrous foods regularly (2800 RPM handles celery and corn husks)
- You are doing a new installation or already have EZ Mount hardware
No, skip the L-8000 if:
- Budget is under $150 (look at the Waste King L-3200 at $230 for 3/4 HP, or the Badger 5 at $80-$120 for budget 1/2 HP)
- Absolute quiet is the top priority (InSinkErator Evolution Excel is quieter at $350-$400)
- An InSinkErator is already installed and you want a 30-minute swap (the mount change adds time)
Bottom line: No other 1 HP disposal offers 20 years of warranty coverage for under $200. Our HP sizing guide can help determine if 1 HP is the right fit for your household.
FAQ
Does the Waste King L-8000 fit InSinkErator mounts?
No, not directly. The L-8000 uses EZ Mount hardware, while InSinkErator uses 3-bolt Quick Lock. Switching requires replacing the mounting ring, which adds 15-30 minutes to installation. The Waste King 9980 is the same motor and specs in a 3-bolt mount that fits InSinkErator openings directly.
Is the 20-year warranty really honored?
The warranty is a 20-year limited warranty with in-home service. Waste King sends a technician to diagnose and repair or replace the unit. Standard warranty exclusions apply (misuse, commercial use, damage from foreign objects). Homeowner forums report positive experiences with warranty claims, though response times vary by region.
How loud is the L-8000?
Quieter than budget Waste King models (L-111, L-1001) thanks to SoundSHIELD insulation, but louder than InSinkErator’s Evolution series with SoundSeal. During operation, grinding noise is moderate — comparable to a blender on low speed. The startup burst is the loudest moment, lasting about half a second as the motor reaches 2800 RPM.
Is 1 HP overkill for a normal household?
For a couple or single person who cooks lightly, yes. A 1/2 HP or 3/4 HP disposal handles most daily food waste at lower cost. But 1 HP makes sense for families of 4+ who cook regularly, process bones or fibrous vegetables, or want the headroom to avoid jams and extend the unit’s lifespan. The L-8000’s price ($150-$200) is low enough that the “overkill” premium is only $30-$80 over a 3/4 HP unit.