Generac T20-S
#2 in Up to 2 inFull review
A 2 in trash pump for muddy water with stones and sticks, with a long run time and a three-year warranty. For owners who deal with dirty flood water.
A.P. Electric $1,199$1,199
The Generac T20-S is the better gas water pump overall, rated 3.3 to 2.6. The Generac T20-S leads on value and flow. The Wacker Neuson PT2A wins on head. The Generac T20-S costs $400.50 less ($1,199 vs $1,599.50).
Wacker Neuson PT2A
#15 in Up to 2 inFull review
A rugged 2 in trash pump from a construction equipment maker, for job sites with dirty water.
Core & Main $1,599.50$1,599.50
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Generac T20-S for value ($6.48 per gpm ($1,199, 185 gpm) vs $9.69 per gpm ($1,599.50, 165.1 gpm)) and flow (185 gpm maximum vs 165.1 gpm maximum).
- Choose the Wacker Neuson PT2A for head (105 ft maximum head vs 98 ft maximum head).
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 weight | Generac T20-S | Wacker Neuson PT2A |
|---|---|---|
| Overall rating | 3.3/5 | 2.6/5 |
| Value 30% | 36 $6.48 per gpm ($1,199, 185 gpm) | 19 $9.69 per gpm ($1,599.50, 165.1 gpm) |
| Flow 15% | 71 185 gpm maximum | 54 165.1 gpm maximum |
| Head 10% | 63 98 ft maximum head | 75 105 ft maximum head |
| Solids 15% | 60 passes solids up to 1 in | 60 passes solids up to 1 in |
| Warranty 30% | 50 3-year warranty for home use | 0 warranty not published, scored as none |
Specifications
| Generac T20-S | Wacker Neuson PT2A | |
|---|---|---|
| Pumping | ||
| Type | Trash | Trash |
| Ports | 2 in | 2 in |
| Maximum flow | 185 gpm | 165.1 gpm |
| Maximum head | 98 ft | 105 ft |
| Suction lift | 26 ft | 24.6 ft |
| Largest solids | 1 in | 1 in |
| Engine and build | ||
| Engine | Generac G-Force, 211 cc | Honda GX160, 163 cc |
| Fuel tank | 3 gal | 0.8 gal |
| Runtime on a tank | 5 hr | 1.8 hr |
| Weight | 109.1 lb | - |
| Warranty | 3 years | - |