WASSERMANN 3/4 HP Sewage Pump 2 inch Discharge with Auto Flo

The Verdict

The WASSERMANN 3/4 HP Sewage Pump: A Solid Workhorse With One Critical Caveat

Let’s cut through the noise. If you’re looking at a 3/4 HP sewage pump with a 2-inch discharge, you’re dealing with raw sewage, a basement sump pit, or a septic effluent line — not a decorative water feature. This WASSERMANN model handles those jobs, but it demands you respect its electrical appetite and check the float mechanism periodically.

What’s Actually in the Box

The pump arrives fully assembled, which is rare in this category. You get the 3/4 HP unit with a 2-inch NPT discharge outlet, a 10-foot power cord, and the vertical float switch pre-mounted on the included rod. No separate control panel to wire, no extra float switch to install. The cast iron volute is the standout — this isn’t a thin stamped steel shell. It’s heavy, roughly 28 pounds, and that mass translates directly to vibration dampening and longevity.

Real-World Performance: What the Motor Actually Delivers

The 3/4 HP motor moves water at 66 gallons per minute at a 5-foot lift, dropping to 30 GPM at a 20-foot head. For a typical residential basement pit 3 feet deep with a 20-foot horizontal run to the sewer line, that’s more than enough. The 2-inch discharge is the key spec here — it clears solids up to 2 inches in diameter, which means standard household waste, sanitary napkins, and the occasional flushable wipe won’t clog it. A 1.5-inch discharge would choke on those.

The float switch engages at 14 inches of water and cuts off at 8 inches. That’s a 6-inch operating band, which is wider than many competitors’ 4-inch band. The practical benefit? The pump runs longer per cycle, which reduces the number of starts and stops — the main killer of sewage pumps. The motor runs cooler and the thermal overload protector has less work to do.

What Buyers Consistently Praise

Digging through the 190 ratings, the recurring theme is value for the price point. One buyer put it plainly: “Installed this in a crawl space for a rental property. Three months in, zero issues. The cast iron body feels way more solid than the plastic pump I replaced.” Another owner noted, “The 2-inch outlet made the installation trivial — I didn’t have to reduce fittings to match my existing line.”

The auto float also gets consistent positive marks. A reviewer with a seasonal cabin said, “The float switch is reliable — it kicked in every time the pit filled, even after sitting unused for four months.”

Where It Falls Short: The Honest Tradeoffs

Here’s the reality check. The 3/4 HP motor draws 11.5 amps on startup. Multiple buyers report tripping breakers when the pump shares a circuit with a washing machine or dehumidifier. This requires a dedicated 20-amp circuit — if you’re wiring this into an existing outlet, budget for an electrician or a new run.

The second issue is the float rod’s plastic pivot points. A handful of reviewers reported the float sticking after 6-8 months of continuous use, typically right after the pit dried out and the float sat in the down position for weeks. It’s not a failure — a firm tap on the rod frees it — but it’s an annoyance you won’t find on pumps with all-metal float assemblies.

The included 10-foot power cord is also short for typical installations. If your pit is more than 10 feet from the nearest outlet, you’re buying an extension cord rated for the amp draw or relocating the receptacle.

Who Should Buy This

• Basement owners with an existing 2-inch sewer line — this is a direct replacement for a failing pump without replumbing.
• Rental property landlords — the cast iron body handles neglect and infrequent use better than plastic alternatives.
• DIYers comfortable with basic electrical work — the wiring is straightforward, but the breaker requirement is non-negotiable.

Skip it if you have a shallow pit under 18 inches deep, or if you can’t easily add a dedicated circuit. Also avoid if you need a pump for a high-head application (over 25 feet of vertical lift) — this unit isn’t rated for that.

FAQ: Three Questions Shoppers Actually Ask

Q: Can this handle a garbage disposal output? Yes. The 2-inch inlet and discharge handle ground food waste and grease-laden water. Just don’t pour hot oil down the drain — that can congeal and coat the impeller.

Q: Does the float switch need adjustment out of the box? No. The float rod is pre-set and tested at the factory. You can adjust the rod height if you want a different activation point, but most installations work fine as-is.

Q: Will this run continuously if the inflow exceeds its capacity? No. The thermal overload protector will shut it down before the motor overheats. If your pit fills faster than 66 GPM, you need a larger pump or a second unit.

The Verdict

Buy it if you need a dependable, cast-iron sewage pump for a standard residential basement pit, you have or can install a dedicated 20-amp circuit, and you want 2-inch solids-handling capability without paying premium brand prices.

Skip it if your electrical panel is maxed out, you need a pump for a high-lift or commercial application, or you want a maintenance-free float mechanism.

The WASSERMANN 3/4 HP is a 3.7/5 — a solid value that outperforms its price point on build quality, but demands electrical planning and occasional float maintenance. For most homeowners replacing a failed pump, that’s a fair trade.

⭐⭐⭐⭐ (3.7/5)

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.