How to use this table

Read down the left column until you find the conditions closest to yours, then look across for the equipment that tends to match. The table does not replace judgment; it is a quick way to see why one machine suits a job and another does not. Where two options appear, the first handles bulk water and the second finishes what is left.

Depth is measured at the lowest point of the room. A slab that slopes toward a floor drain or a sump pit means water collects there first, so your deepest reading may be much smaller than the room average.

Submersible pump and an air mover on a wet concrete floor

Submersible pump and an air mover on a wet concrete floor. One example of what this stage can look like; it is not a job connected to this site.

Situation to equipment

Situation
Under half an inch across a bare slab
Usual equipment
Squeegee and wet-dry vacuum
Left behind
Damp film
Needs next
Airflow and a dehumidifier
Situation
Half an inch to three inches, whole room
Usual equipment
Submersible pump, then vacuum
Left behind
Quarter inch
Needs next
Wand pass on carpet, pad check
Situation
Over three inches, stairwell or pit
Usual equipment
Larger pump with long discharge hose
Left behind
Thin layer
Needs next
Vacuum and squeegee
Situation
Soaked carpet over pad
Usual equipment
Weighted extraction wand, or lift and cut
Left behind
Pad moisture
Needs next
Pad removal, slab drying
Situation
Silty window well water
Usual equipment
Trash pump
Left behind
Silt on the floor
Needs next
Shovel, rinse and extraction
Situation
Crawlspace with low clearance
Usual equipment
Transfer pump with suction hose
Left behind
Pools in dips
Needs next
Small wand or sponge-out, ventilation
Situation
Backup through a floor drain
Usual equipment
Equipment run by protected people only
Left behind
Contaminated residue
Needs next
Disinfection and material removal

Typical pairings; conditions on site can change the answer.

Before choosing a machine

  • Measure the deepest point and the area in rough feet.
  • Decide whether the water is clean, gray or black.
  • Locate where the discharge hose can run downhill and away.
  • Check that the circuit used is dry and protected.
  • Know the flooring type, because carpet needs a different tool than tile.
  • Plan where to empty a canister if a vacuum is used.

Equipment words

Submersible pump
A sealed pump that sits in the water and pushes it out through a hose.
Trash pump
A pump with a large intake that tolerates grit and small debris.
Transfer pump
A pump that sits above the water and pulls it through a suction hose.
Extraction wand
A hand tool with strong suction used to pull water from carpet and flat surfaces.
Lift
The vertical distance the water must be raised on its way to the outlet.

Common questions

Which machine is best overall?

None. Depth, debris and flooring decide, and most jobs use a pump for bulk water and a vacuum or wand for the finish.

Why does a pump leave water behind?

A pump loses suction when the level drops below its intake, usually leaving a thin layer that needs a different tool.

General information for Wheat Ridge, not a quote or professional advice. In an emergency, call 911.