The Excel is InSinkErator's top-of-line continuous-feed unit and the benchmark every other 1 HP disposer chases. Reviewers across shouldit.com, Consumer Reports, and Family Handyman rank it the quietest and most thorough grinder they have tested, processing 90 oz of mixed scraps in about two minutes. Plan for the heft and the cord-kit add-on.
Full review
Grinding Performance and Real-World Use
Shouldit.com's bench testing showed the Excel chewing through 90 ounces of assorted food scraps in roughly two minutes and reducing 7.4 ounces of chicken thigh bones down to 0.19 ounces, a roughly 97.5 percent reduction rate. Reviewers described the output as having an almost mulch-like texture, fine enough to clear typical residential drain lines without coaxing or a long run-down. That fineness is the practical payoff of the 3-stage MultiGrind chamber and matters most for households that send peels, citrus rinds, and meat scraps down the sink as a routine. Family Handyman framed it more bluntly: a powerful unit that handles whatever a family kitchen sends its way without the multi-pass coaxing many smaller disposers need.
Where weaker disposers tend to lose ground is on stringy and fibrous waste, but the Excel's auto-reverse and Jam-Sensor circuit have a measurable effect here. The Jam-Sensor monitors motor torque load and increases power when it detects resistance, and auto-reverse changes grind direction to unwind anything wrapping the impellers. Owners on Home Depot review pages report processing artichoke leaves, asparagus ends, and corn husks that smaller 1/2 HP units choke on.
Noise Level and Vibration
SoundSeal Technology is not one feature but a stack: a SoundLimiter insulation blanket wrapped around the motor housing, an anti-vibration mount that isolates the disposer body from the sink flange, an anti-vibration tailpipe mount, and a Quiet Collar sink baffle that absorbs splash and chamber resonance. Shouldit.com singled out the result as exceptional, even when dealing with hard-to-break materials, really going the extra mile with its insulation compared to other brands. Consumer Reports tests the Excel against the same Noise criterion as the rest of its panel and ranks it among the quietest 1 HP units regardless of brand.
The practical translation: you can hold a conversation in a normal voice in the kitchen while the disposer runs through soft and medium-density loads. Hard items like chicken bones still register, but the timbre is a deep hum rather than the high-pitched whine typical of budget Badger-class units.
Build Quality and Materials
The Excel uses alloy stainless steel grind components throughout the chamber, including the GrindShear ring and swivel impellers, and a 40 oz stainless steel grind chamber, the largest in the InSinkErator residential lineup. Stainless beats galvanized at resisting rust and pitting, particularly in homes with hard water or daily citrus and tomato use that drives chamber acidity. The LeakGuard liner on the motor housing is engineered to keep moisture out of the motor windings, a known failure point on older disposers.
At 25.5 lb it is also the heaviest unit on the market by a meaningful margin. Shouldit.com flagged this as one of two notable downsides: the unit is bulky across, and lifting it into a 3-bolt mount while threading the connections is a real workout. Plan on a helper or a strap if you are working under a deep sink.
Installation Difficulty
The Lift & Latch 3-bolt mount is the same mounting system InSinkErator has shipped for years, so swapping out an older InSinkErator unit is largely a same-day DIY project: drop the old disposer, dry-fit the new one, twist into the existing mount, tighten the discharge tube, and connect power. Family Handyman frames it as a straightforward replacement for any handy homeowner familiar with a basin wrench. The catch: the Excel ships without a power cord. Owners report buying the CRD-00 cord kit (around $15) or hardwiring per local code.
The Excel's height (a hair over 14 inches with the discharge stub) is roomy enough to need cabinet clearance verification before purchase. Tighter under-sink layouts with shallow basins or a deep cabinet header may be better served by the 12-inch Evolution Compact.
What Reviewers Loved
Across every full review surveyed (shouldit.com, Family Handyman, Bob Vila context coverage, plus Home Depot user reviews aggregated over 6,000+ entries), two themes recur: the noise floor really is conversational, and grind output really does drain without further coaxing. Shouldit.com handed the Excel an overall 9.3 out of 10, calling out the anti-noise and anti-vibration system as exceptional. Family Handyman highlighted the unit as their top-tier pick, with the caveat that the price tag is real.
Owners replacing aging 1/2 HP Badger units consistently describe the Excel as a dramatic upgrade, citing both speed (a tenth of the run time per load) and odor reduction from cleaner pass-through.
Where It Falls Short
Two real complaints come up. First, the weight: 25.5 lb under a sink, often awkwardly oriented, is heavier than virtually any competing residential disposer. If you are installing solo, expect to use a support strap or floor jack to stabilize while you twist into the mount. Second, the cord-not-included grievance, repeated by every reviewer, has hardened from quirk to genuine annoyance. Buyers at this price tier reasonably expect the cord in the box.
There is also no septic-safe variant in the Excel name; if you have a septic system, InSinkErator's bio-charge Septic Assist is the company's septic-compatible answer and sits a tier below in motor power.
Who It's Best For
The Excel is the right choice for households that cook from scratch most days, have a city sewer connection (not septic), and want the quietest and finest-grinding continuous-feed disposer available without crossing into commercial-grade pricing. It rewards the buyer who values low noise during dinner-prep cleanup, fast cycle times when scraping plates, and confidence that fibrous and hard waste will not jam.
It is overkill for studio apartments, occasional cooks, and households grinding a few cups of soft scraps a week. Those buyers will save real money with the Evolution Compact 3/4 HP or even the Badger 5 1/2 HP and never notice the difference at the drain.
How It Compares to Alternatives
Against InSinkErator's own Evolution Compact 3/4 HP, the Excel adds a third grind stage, 5 oz more chamber capacity, and more sound insulation, for roughly $150 more at street price. The Compact wins on under-sink clearance (12 inches vs 14 inches tall). Against the Septic Assist 3/4 HP, the Excel is finer-grinding and louder-motored but offers no septic compatibility, so the choice between them collapses to whether your home is on a sewer line or a tank. Against the entry-level Badger 5 1/2 HP, the Excel doubles the motor, triples the grind stages, and adds full sound insulation for roughly triple the price.
Value at This Price
At roughly $379 street, the Excel is among the most expensive residential continuous-feed disposers. The value math depends on use: a family running the disposer two or three times a day for a decade will appreciate the noise and grind-fineness premium every cycle. A household running it twice a week will not. The 7-year We Come To You warranty includes both parts and labor, which is genuinely uncommon in the category and partially offsets the sticker shock if anything goes wrong.
Reviewers at shouldit.com noted the Excel has been the most expensive garbage disposal for years, though that's not surprising considering its premium features and InSinkErator's quality control. The depreciation curve is also genuinely flat: secondhand Excel units pulled from kitchen remodels routinely sell for $150-200 because the chassis and chamber simply do not wear at typical residential duty cycles.
Long-Term Durability
InSinkErator publishes a 7-year warranty on the Excel, but the underlying Dura-Drive induction motor and stainless chamber are engineered for substantially longer service. Owner threads on Home Depot and reddit's r/Plumbing routinely report 12-15 year service lives on Excel-tier disposers with no maintenance beyond occasional ice-and-rock-salt scrubbing of the chamber. The Jam-Sensor auto-reverse mechanism also reduces wear on the impellers since the motor unwinds itself before stalling under load.
The most common failure mode at year 10+ is not the motor or chamber but the rubber splash baffle, which hardens and tears from acidic and abrasive exposure. Replacement baffles run roughly $10 and snap into place in under a minute. The motor itself is rebuilt rarely; when it does fail, the warranty's We Come To You provision means a manufacturer technician visits and replaces the unit on site rather than asking the owner to ship a 25 lb chunk of steel back to a service depot.
Strengths
- +1 HP Dura-Drive induction motor with 3-stage MultiGrind handles bones, fruit pits, and dense scraps in roughly two minutes
- +SoundSeal Technology insulation blanket plus anti-vibration tailpipe and sink baffle make it the quietest continuous-feed unit reviewers tested
- +40 oz stainless steel grind chamber with alloy stainless components resists corrosion and odor buildup over years of daily use
- +Lift & Latch 3-bolt mount lets one person hang and rotate the disposer into place without a helper
- +7-year We Come To You in-home warranty covers parts AND labor with a manufacturer technician dispatched to your home
Watch-outs
- −Heaviest disposer on the consumer market at ~25.5 lb, awkward to support during install
- −Power cord sold separately as a kit add-on
- −Premium pricing more than triples a 1/2 HP starter unit
How it compares
Sits a clear tier above the 3/4 HP Evolution Compact in motor power and grind stages, with a 40 oz chamber against the Compact's 34.6 oz. Significantly quieter and finer-grinding than the entry-level Badger 5 1/2 HP and a meaningful step up from the 3/4 HP Septic Assist for non-septic homes that want a third grind stage.
Who this is for
At a glance: Large families and heavy daily cooks who want the quietest continuous-feed grinder available and will pay premium for finer particle output and a manufacturer-dispatched warranty.
Why you’d buy the InSinkErator Evolution Excel 1.0 HP
- 1 HP Dura-Drive induction motor with 3-stage MultiGrind handles bones, fruit pits, and dense scraps in roughly two minutes.
- SoundSeal Technology insulation blanket plus anti-vibration tailpipe and sink baffle make it the quietest continuous-feed unit reviewers tested.
- 40 oz stainless steel grind chamber with alloy stainless components resists corrosion and odor buildup over years of daily use.
Why you’d skip it
- Heaviest disposer on the consumer market at ~25.5 lb, awkward to support during install.
- Power cord sold separately as a kit add-on.
- Premium pricing more than triples a 1/2 HP starter unit.
Rating sources
“The disposal outperformed its peers with no trouble handling 90 ounces of assorted food scraps in about 2 minutes, producing well-processed output with an almost mulch-like texture.”
“Tested across Speed (food waste grinding), Fineness (particle reduction), and Noise (operational quietness).”
“The InSinkErator Evolution Excel features a 1 HP motor and is described as a powerful unit.”
Our 4.7 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
