Aceup Energy 2 in Semi-Trash Pump vs Generac PRO ST20-S

Last updated: November 3, 2026

The Aceup Energy 2 in Semi-Trash Pump and the Generac PRO ST20-S are evenly matched, rated 3.2 and 3.1. The Aceup Energy 2 in Semi-Trash Pump leads on value. The Generac PRO ST20-S wins on warranty and head. The Aceup Energy 2 in Semi-Trash Pump costs $399.01 less ($299.99 vs $699).

Prices were last checked November 3, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Aceup Energy 2 in Semi-Trash Pump vs Generac PRO ST20-S

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every up to 2 in gas water pump; a clear win is highlighted. How we rank explains each one.

Factor weightAceup Energy 2 in Semi-Trash PumpGenerac PRO ST20-S
Overall rating3.2/53.1/5
Value 30%90 $1.90 per gpm ($299.99, 158 gpm)53 $4.42 per gpm ($699, 158 gpm)
Flow 15%48 158 gpm maximum48 158 gpm maximum
Head 10%58 95 ft maximum head80 108 ft maximum head
Solids 15%50 solids size not published (neutral score used)6 passes solids up to 0.3 in
Warranty 30%0 1-year warranty for home use50 3-year warranty for home use

Specifications

Aceup Energy 2 in Semi-Trash PumpGenerac PRO ST20-S
Pumping
TypeSemi-trashSemi-trash
Ports2 in2 in
Maximum flow158 gpm158 gpm
Maximum head95 ft108 ft
Suction lift27 ft26 ft
Largest solids-0.3 in
Engine and build
EngineAceup OHV, 208 ccGenerac G-Force OHC, 169 cc
Fuel tank-3 gal
Runtime on a tank-5 hr
Weight-65.3 lb
Warranty1 year3 years

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