Moen GXP33C, GX PRO Series 1/3 HP Garbage Disposal Review

Moen is a name most people already trust for faucets and fixtures, not necessarily garbage disposals. The GXP33C is Moen’s answer to that gap, a compact 1/3 HP unit built into what the brand calls its GX PRO Series, Lite lineup.

This isn’t a Joneca-manufactured disposal wearing a different label, which is worth mentioning since several other brands covered on this site share that exact parentage. The Moen GXP33C is built by Moen Incorporated directly, and it uses galvanized steel construction rather than the stainless-steel grinding chambers found across the American Standard, Eco Logic, and Waste Maid lineups. That’s a real difference, not a marketing detail, and it shapes who this disposal actually makes sense for.

This review covers what the GXP33C’s specs actually mean day to day, how the galvanized steel build compares to stainless-steel competitors at the same horsepower, and where the included power cord and slim body fit into a typical installation.

Moen GXP33C, GX PRO Series 1/3 HP Garbage Disposal Specifications

Specification	Details
Brand	Moen
Manufacturer	Moen Incorporated
Model Number	GXP33C
Series	GX PRO Series, Lite
Horsepower (HP)	1/3 HP
Feed Type	Continuous Feed
Material	Galvanized Steel
Installation Method	Under Counter
Voltage	115V
Product Dimensions	6.34 × 6.34 × 14.76 inches
Item Weight	9.41 lbs
Color	Black
Special Features	Slim, Compact Design
Included Components	Disposal Unit, Power Cord
Warranty	5-Year Limited Warranty (per Moen’s official warranty documentation)

Moen GXP33C, GX PRO Series 1/3 HP Garbage Disposal Key Features

1/3 HP Motor for Light, Everyday Waste

At 1/3 HP, the GXP33C sits at the entry point of Moen’s disposal lineup, sized for the kind of waste a single person, a couple, or a lightly used secondary kitchen produces day to day. Coffee grounds, rinsed plate scraps, soft vegetable trim, this is squarely what a 1/3 HP motor is built for.

Feed it heavier or fibrous waste in large amounts and it will need smaller, slower batches to keep up. That’s not a shortfall unique to this unit. Every 1/3 HP disposal on the market, regardless of brand, runs into the same ceiling.

Galvanized Steel Construction

Here’s the detail that actually separates the GXP33C from a lot of what else is covered on this site. American Standard, Eco Logic, and Waste Maid disposals in this horsepower class are all built on stainless-steel grinding components. The Moen GXP33C uses galvanized steel instead, confirmed directly in Amazon’s own technical specifications for this listing.

Galvanized steel isn’t a defect. It’s a legitimate, widely used material in budget and mid-tier disposals, and it’s been standard in the appliance industry for decades. But it doesn’t hold up to corrosion or edge-dulling over years of use quite as well as stainless steel does. For a light-use kitchen where this disposal isn’t running multiple times a day, that tradeoff matters less. For a heavily used primary kitchen sink, it’s worth knowing about before you buy.

Slim, Compact Body for Tighter Cabinets

Moen markets this as part of its “Lite” series, and the dimensions back that up. At 6.34 by 6.34 by 14.76 inches, it’s built with a compact footprint in mind, useful if your under-sink cabinet has a shallower shelf or you’re working around a garbage disposal for the first time in a smaller kitchen. It’s not the narrowest disposal in this HP class, but it’s built with tight installations as a design priority rather than an afterthought.

Continuous Feed Operation

The GXP33C runs as a continuous feed unit, meaning you switch it on and keep feeding waste through while the water runs, rather than loading a batch and sealing a cover before grinding starts. This is the standard operating style for the vast majority of household disposals, and it’s the simplest to live with for daily use.

Included Power Cord

The unit ships with its power cord included, which isn’t universal across every disposal brand at this price point. That’s one less separate purchase and one less compatibility question to sort out before installation day.

Installation and Mounting

Moen’s installation documentation walks through a full mounting sequence, starting with safely removing an existing disposal, including guidance for units that were hardwired rather than plugged in, and moving through a seven-step mounting assembly process for the new unit. Moen also offers an optional single-use Simple Snap Tool as an accessory for installing the snap ring during mounting, a small detail that can make the process faster if you don’t already have the right tool on hand.

If you’ve swapped a disposal before, the process here follows the same general shape as most residential installations. If this is your first time, following Moen’s documented steps in order, rather than skipping ahead, is the difference between a clean install and a return trip under the sink.

Maintenance

Standard disposal maintenance rules apply here as they do across the category. Don’t run hot water while grinding, since cold water keeps grease and fats solid enough to flush through rather than coating the chamber. Avoid pouring chemical or lye-based drain cleaners into the line, since that kind of damage typically isn’t covered under warranty regardless of brand.

Daily Use Experience

For the light-duty kitchen this disposal is built for, the GXP33C handles routine scraps without complication. The compact body keeps it out of the way in a tighter cabinet, and having the power cord already included means less setup friction on installation day. This isn’t a disposal built to impress with grinding power. It’s built to handle a smaller kitchen’s actual daily needs without asking you to pay for a bigger motor you won’t use.

Warranty

Moen backs the GXP33C with a 5-year limited warranty, confirmed directly in the brand’s official warranty documentation covering its disposal lineup. That’s a solid, straightforward coverage window for an entry-level 1/3 HP disposal, and it puts the GXP33C on equal footing with several stainless-steel competitors in the same horsepower class, even with the different construction material.

Moen’s warranty documentation also notes that units installed in commercial settings are limited to a 1-year warranty term rather than the full 5-year residential coverage, so this is a disposal built and warrantied with home use in mind.

Moen GXP33C, GX PRO Series 1/3 HP Garbage Disposal Pros and Cons

Moen GXP33C vs Similar 1/3 HP Disposals

Feature	Moen GXP33C	American Standard 10-US-AS-3	WasteMaid Pro 459
Motor Power	1/3 HP	1/3 HP	1/3 HP
Grinding Material	Galvanized Steel	Stainless Steel	Stainless Steel
Item Weight	9.41 lbs	8.8 lbs	8.89 lbs
Product Dimensions	6.34 × 6.34 × 14.76 inches	6.3 × 6.3 × 13 inches	7 × 7 × 14 inches
Warranty	5 Years	5 Years	5 Years plus Lifetime Corrosion
Best For	Compact installs from a recognized fixtures brand	Budget-conscious replacement with stainless internals	Fast, tool-light installation with odor protection

Further Reading:
Evergrind E101 1/3 HP Garbage Disposal
InSinkErator Badger 5, 1/2 HP Garbage Disposal
GE GFC365W 1/3 HP Garbage Disposal
Moen Gray EX50C Prep Series, 1/2 HP Garbage Disposal

Conclusion

The Moen GXP33C earns its place in this HP class on the strength of its brand backing and a genuinely compact build, not by matching the stainless-steel internals found on some of its competitors. That’s a real tradeoff worth weighing, not a hidden flaw. For a lighter-use kitchen where corrosion resistance over a decade of heavy grinding isn’t the deciding factor, the galvanized steel construction is a reasonable one to accept.

Backed by a 5-year warranty and shipped with the power cord already included, the Moen GXP33C is a straightforward pick for anyone who wants a disposal from a trusted fixtures brand without paying for more motor, or more installation complexity, than a smaller kitchen actually needs.