Water Extraction: Equipment, Specs, Methods and Costs

In building restoration, extraction is one step with one job: remove water while it is still liquid. It sits inside the mitigation phase described in what is water mitigation. Everything that evaporates afterwards belongs to structural drying, which is sized against whatever extraction left behind.

Why lifting water beats evaporating it

Turning liquid water into vapour takes a fixed amount of energy per kilogram, the latent heat of vaporisation. According to the Engineering ToolBox table it is 2,453.5 kJ/kg at 20 C and 2,256.4 kJ/kg at the boiling point, so water leaving a room-temperature floor needs slightly more energy per kilogram than a boiling kettle. A drying system pays that cost for every kilogram it evaporates, then a dehumidifier condenses the vapour back out of the air.

Per gallon: NIST Handbook 44, Appendix C defines the US gallon as 231 cubic inches, or 3.785411784 litres, and the USGS table gives a density of 0.99802 g/cm3 at 70 F, so a gallon weighs 3.78 kg (8.33 lb). According to that arithmetic, one gallon needs about 9,269 kJ to evaporate: 2.57 kWh, or 8,785 BTU using the ToolBox value of 1,054.8 BTU per pound.

For scale, that energy would run an HVE 3000 flood extractor at the nameplate draw on the Dri-Eaz HVE 3000 spec sheet (13.5 A at 115 V, both blowers) for about 100 minutes. Nameplate amps times volts is not a measured efficiency, but the direction is clear: a vacuum moves liquid water without paying the phase-change bill.

The dehumidifier queue

The second cost is time. The Dri-Eaz restoration catalogue (November 2025) rates the LGR 5000Li at 80 pints a day under AHAM test conditions and 164 at maximum. At 8 pints a gallon, per NIST, that is 10 to 20.5 gallons a day. Every gallon a wand leaves in the pad is a gallon the dehumidifier pulls out of the air later.

The same extract-first principle, applied to the carpet itself, is in how to dry wet carpet.

The vacuum source: truckmount or portable

The vacuum source sets two numbers. Vacuum lift is the pressure difference the blower holds with the inlet sealed, which pulls water out of the pile and up the hose. Airflow, in cubic feet per minute, is the volume of air moved, which carries the water to the tank.

The Sapphire Scientific 370 truckmount flyer lists vacuum to 13 in. Hg and flow up to 317 CFM, with a 120 gallon waste tank. The Mytee Speedster LX spec sheet gives 180 inches of water lift and 225 to 250 CFM. Using the 60 F factors in NIST SP 811, Appendix B.9, one inch of mercury is 13.57 inches of water, so the truckmount’s figure is about 176 inches of water.

Unit	Type	Lift as printed	Inches of water	Airflow	Other published specs
Sapphire Scientific 370	Truckmount	13 in. Hg	176 (converted)	Up to 317 CFM	120 gal waste tank
Dri-Eaz HVE 3000	Portable flood extractor	12 in. Hg, both blowers	164 (printed)	Not printed	50 gpm pump-out, 12 gal tank, 132 lb, HEPA exhaust
Mytee Speedster LX	Portable carpet extractor	180 in. water lift	180 (printed)	225 to 250 CFM	Dual vacuum motors

Why portables exist when the truck has more air

The truckmount brings airflow and tank size, but it stays at the curb while the loss may be several floors up. Sylvane describes the HVE 3000 as commonly used for portable extraction in multi-level units and as a truckmount booster, and the Dri-Eaz sheet says it can intercept extracted water so the truck tank does not fill, with automatic pump-out to a drain.

The tool on the floor: wand, weighted, ride-on, subsurface

A cleaning wand pulls water from the face fibre. Cleanfax, in a 2014 piece by Jeremy Reets, notes that most restorers’ staple rig is a truckmount and wand, and that wanding followed by pad removal can be effective but is not always efficient. Weighted and subsurface tools reach the pad without lifting the carpet.

Tool	How it works	Published detail	Best fit
Carpet wand	Open head drawn across the face fibre	Standard truckmount tool, per Cleanfax	Surface water, final passes
Stationary subsurface tool	Sealed plate pressed into the carpet; the technician stands on it	Bane-Clene reports the Water Claw removes up to 90% of water from carpet and pad	Pad-in extraction, strong vacuum source
Ride-on or self-propelled tool	Weighted head wrings the pad as it travels	Rover HVE: 19.75 in. path, 67 lb, per Legend Brands	Large carpeted areas
All surface tool	Wand with a replaceable glide for hard floors	12 in. head, 1.5 in. hose, per Legend Brands	Tile, stone, LVT, polished concrete
Floor drying panels	Mats sealed to the floor, connected to extraction hoses	Described for hardwood by R&R magazine	Wood flooring

Per Cleanfax, a stationary tool is held for a five count at each position, and a ride-on tool runs into each corner and back. The stop test for both: if you can squeeze water out of the pad, you can still extract it.

Carpet, pad, hardwood and concrete

Extraction technique follows the material. R&R magazine‘s KnowHow team (April 2024) separates heavy extraction for soaked carpet, which makes later pad removal easier, from standard extraction on less saturated carpet, and calls for a secondary extraction on the carpet after the pad comes out.

Surface	Method	Stop signal	Source
Carpet over pad, pad staying	Subsurface or ride-on tool, repeated passes over the whole wet area	Pad yields no water when squeezed	Cleanfax; Bane-Clene
Carpet over pad, pad coming out	Heavy extraction first, pad out, secondary extraction on the carpet	Carpet stops releasing water to the wand	R&R magazine
Hardwood	Floor panels connected to extraction hoses to limit damage to the wood	Readings against an unaffected area during drying	R&R magazine
Painted concrete or epoxy	Squeegee water to a central point, then a metal wand with a protective cover	No standing water or film	R&R magazine
Tile, stone, LVT, polished concrete	All surface tool with replaceable glide; avoid unfinished or exposed aggregate	No standing water in grout lines or joints	Legend Brands

For wood, the cupping and replacement decision is in hardwood floor water damage repair.

How much water extraction removes

No independent test with accessible results was found for this page; the SCRT Water Extraction efficiency Test that Cleanfax recommends could not be retrieved. What is published are manufacturer claims, to be read as claims, not measurements.

Claim	Who makes it	What it is not
Removes up to 90% of water from carpet and pad	Bane-Clene, Water Claw flood tool page	Not a third-party test; no test conditions given
Extracts 1,200 sq ft of carpet and pad in under 2 hours with a truckmount or transport extractor	Sylvane listing for the Dri-Eaz Rover HVE	A retailer’s product copy, not a rate guarantee
Cuts up to a third off extraction time	Dri-Eaz catalogue, extraction tool #104221	No baseline tool or test named

Category 2 and 3 change the job

ANSI/IICRC S500 (fifth edition, 2021) sorts water by contamination. The Northern Arizona University water damage guideline, written to follow S500, defines Category 2 as water with significant contamination and Category 3 as grossly unsanitary water, including sewage and rising water from rivers or streams, and says grey water left untreated beyond 48 hours may become black. Definitions are in our IICRC water categories guide.

Category	What extraction is for	Carpet and pad outcome	Equipment handling
1, clean	Remove liquid so materials can dry in place	Can be dried if wet no more than 48 hours, per NAU	Truckmount or portable
2, grey	Same goal, with sanitising	Same 48 hour test, per NAU	Technicians trained in exposure risks, per NAU
3, black	Bulk removal before tear-out	Carpet wet with Category 3 for any time is removed, per NAU	Rubber gloves, eye protection, suit and boots (NAU); black water kept out of the truck tank, HEPA exhaust (Dri-Eaz)

The Dri-Eaz HVE 3000 spec sheet lists both black water features, and says its HEPA exhaust conforms to the 2015 S500 recommendation in section 13.3.3. On a Category 3 job extraction does not save the pad; it lightens the tear-out. The cost side is in water damage restoration cost.

Choosing the setup: a decision path

Six questions, in order, settle most setups. Keep this list in the truck.

1. Name the category before the hose comes off the truck. Category 3 means bulk removal ahead of tear-out, black water out of the truck tank, and the PPE the NAU guideline lists.
2. Check the clock. On Category 1 or 2, the NAU guideline allows carpet drying only if it has been wet no more than 48 hours. Past that, plan removal and extract for weight.
3. Pick the source by distance and water. Short hose run and clean water: truckmount. Upper floors, long runs or black water: a portable flood extractor pumping out to a drain.
4. Pick the tool by what is wet. Pad staying: subsurface or ride-on tool. Pad coming out: heavy extraction, pad out, second pass on the carpet. Hard floors: squeegee and all surface tool. Hardwood: floor panels.
5. Extract to the squeeze test. Keep passing until the pad yields no water when squeezed, then photograph and log tool, passes and area.
6. Hand over to drying. Take baseline readings on unaffected material and size drying to what is left.

What extraction costs

Fixr and Bob Vila publish extraction rates per square foot by category (Bob Vila’s date from 2023). HomeAdvisor publishes a restoration-wide figure, shown for contrast only.

Per the source	Clean, per sq ft	Grey, per sq ft	Black, per sq ft	Updated
Fixr (extraction)	$3.75 to $4.25	$4.10 to $6.50	$7 to $7.50	31 January 2025
Bob Vila (extraction)	$3 to $4	$4 to $6.50	$7 to $7.50	30 May 2023
HomeAdvisor (restoration)	$3.50	$5.25	$7.50	17 June 2026

Applied to a 250 square foot room, the two extraction-specific guides span $750 to $1,062.50 for clean water, $1,000 to $1,625 for grey and $1,750 to $1,875 for black, according to the Fixr and Bob Vila rates multiplied out. Other published price points sit beside those rates.

Item	Published figure	Per the source
Removing one inch of clean water	$500 to $1,500	HomeAdvisor
Restoration company labour, per hour	$70 to $200	Fixr
Emergency response fee	$50 to $200	Fixr
Minimum dispatch charge	$100 to $200	Fixr
Dri-Eaz HVE 3000 flood extractor, to buy	$4,194	Sylvane listing
Dri-Eaz Rover HVE ride-on tool, to buy	$4,919	Sylvane listing

For contractors: Xactimate codes and the file

In the Xactware category code list, WTR is the category “Water extraction & remediation”. Manufacturers print the selector codes they associate with their equipment, and those are the only extraction codes published openly that this page could find.

Code as printed	Where it is printed	Equipment
WTR	Xactware category code list	Category: Water extraction & remediation
WTR EXT (+ & W)	Dri-Eaz HVE 3000 spec sheet	Portable flood extractor
WTREXTW	Legend Brands Rover HVE page	Self-propelled extraction tool
WTRDHM>>>XXL	Dri-Eaz LGR 3500i spec sheet	Dehumidifier, a drying line shown for contrast

One caution: the Legend Brands All Surface Extraction Tool page lists WTRDHM, the dehumidifier prefix on the LGR sheet, as its code. That looks like a page error, and it is the reason to match every line to the selector description in your current price list, suffixes included, not to a spec sheet. Pricing mechanics are in how Xactimate pricing works.

What an adjuster asks to see

• Category and its basis: the source, photographed before extraction starts.
• Area extracted, by room and surface, matching the sketch.
• Tool and vacuum source, so the line matches the equipment on site.
• Pad decision and reason: kept and extracted in place, or removed for category or time.
• Baseline readings on unaffected material, taken before drying equipment is set.

More on how the extraction line connects to everything that follows is in the water damage hub.

Questions people actually ask

What does water extraction mean?

In restoration, water extraction means removing liquid water from carpet, pad, hard floors and standing pools with vacuum or pumps, before evaporative drying starts. It is one step inside water mitigation. The phrase also describes taking water from rivers or aquifers, which is a different subject.

How much does it cost to extract water?

Fixr reports extraction at $3.75 to $4.25 per square foot for clean water, $4.10 to $6.50 for grey and $7 to $7.50 for black, and Bob Vila’s 2023 figures are similar. HomeAdvisor reports that removing one inch of clean water costs around $500 to $1,500. Fixr reports emergency fees of $50 to $200 on top.

How much does a water extractor cost?

Professional units cost thousands of dollars. Per the Sylvane listings, the Dri-Eaz HVE 3000 portable flood extractor is $4,194 and the Rover HVE ride-on tool is $4,919; the Rover also needs a truckmount or portable vacuum to run. Both prices are to buy, not hire.

How long does water extraction take?

It depends on area, tool and saturation. Per the Sylvane listing, the Rover HVE extracts 1,200 square feet of carpet and pad in under 2 hours with a truckmount or transport extractor. That is product copy, not a guarantee. The stop rule Cleanfax gives is practical: keep passing until the pad yields no water when squeezed.

Why not just run fans and a dehumidifier?

Because evaporation is slow and costly. One gallon needs about 2.57 kWh of heat to evaporate, per published latent heat and NIST figures, and a dehumidifier rated 80 pints a day (AHAM) by Dri-Eaz removes about 10 gallons a day. Lifting water as liquid first shortens the dry.

Can extraction save the carpet pad?

Sometimes, on clean or grey water caught early. Subsurface and ride-on tools are built to extract the pad in place. The NAU guideline, which follows S500, allows carpet drying only when it has been wet with Category 1 or 2 water for no more than 48 hours, and never with Category 3.