What Used Vacuum Trucks Cost in 2026

How much does a used vacuum truck cost?

From $8,000 for a slide-in unit to $450,000 for a late-model hydro excavator. The type of truck sets the band and the chassis sets the spot inside it.

What moves the price inside a band?

The chassis year and engine first, then the pump, the tank and the paperwork that proves their condition.

• Chassis year and emissions equipment. It is the biggest single swing; see the chassis section below.
• Tank gallons, because a bigger tank earns more per load, as long as the chassis can carry it full.
• Vacuum pump or blower make, hours and rebuild history, with receipts.
• On combination trucks and hydro excavators: water pump GPM and PSI, boom reach and rotation, and the debris body.
• Winter gear: a heated enclosure, a boiler on a hydro excavator, and a working antifreeze or drain-down system.
• Records. Engine, pump and tank test records move a truck toward the top of its band.

Which chassis years should you buy?

Pre-2007 trucks are the cheapest to keep running and DEF-era trucks (2011 and newer) bring the best prices; many buyers skip 2007 to 2010 trucks with early DPF systems.

The truck under the tank sets the floor. Pre-2007 diesels have no particulate filter and are cheap to keep running, which keeps their price up despite age. 2007 to 2010 trucks carry early DPF systems that many buyers avoid. DEF-era trucks (2011 and newer) are the most expensive and the most desirable for fleets that need reliability and emissions compliance.

Mileage matters less than on a highway truck because vacuum trucks idle for hours at the pump. Ask for engine hours as well as miles, and for the PTO hours if the truck records them.

California is the exception. Under the CARB Truck and Bus regulation, diesel trucks over 14,000 lb GVWR operating in the state have needed a 2010 or newer engine since January 1, 2023, with few exceptions, and the DMV denies registration to trucks that do not comply. Check the engine's model year on its emissions label, not only the chassis year. A pre-2010 engine is worth far less to a California buyer.

What should you check on the tank and pump?

Tank thickness and test records first, then the vacuum pump's make and hours, then whether the tank holds vacuum overnight.

• Capacity in gallons, and steel versus aluminum. Aluminum saves weight, which is payload.
• The last ultrasonic thickness test or tank inspection. A tank that fails inspection is scrap.
• Vacuum pump make and hours: Masport, NVE, Fruitland and Jurop are the common names. Blower hours on combination units.
• On a rotary vane pump, check that the oiler is feeding. The vanes run on a steady drip of oil, and a pump run dry wears fast.
• Valves, hoses, sight glass and the primary and secondary shutoffs.
• Drain the secondary shutoff. Sludge in it means material carried past the primary shutoff at least once, so ask whether the pump was damaged.
• Whether the tank holds vacuum overnight. It is the simplest test of seams and valves.

Hazmat service and DOT specification tanks

A septic pumper that hauls only septage usually runs a non-specification tank. An industrial vac that hauls hazardous materials usually runs a DOT specification cargo tank, and that tank runs on a federal test schedule.

Under 49 CFR 180.407, a specification tank built to be loaded by vacuum with a full opening rear head needs an external visual inspection every 6 months and a pressure test every 2 years. Each passed test is marked on the tank. A tank past its due date cannot be filled with hazmat until it passes, and a tank out of hazmat service for a year or more needs a pressure test before it goes back in.

If you plan to haul hazmat, ask for the test reports and check the marks on the tank against them before you pay. A spec truck that has been parked for a year is not ready to work the day you buy it.

Weight and payload

Tank size only pays if the truck can carry it full. Water weighs about 8.3 lb a gallon and sludge weighs more, so a full 3,600 gallon tank is 30,000 lb of load or more. Check the GVWR and axle ratings on the door plate against a full tank, and remember that state weight limits apply on top of them.

Regional pricing

Texas, Florida and the Gulf states trade at the top of the market because septic and industrial cleaning demand is steady all year. Northern states see more rust and more seasonal sellers, which pulls prices down in late fall. Buying a truck from a dry state and driving it home is common and often worth the fuel.

Inspection checklist

• Cold start the truck and watch for smoke and warning lights.
• Engage the PTO and run the pump. Listen for knocking and watch the vacuum gauge climb and hold.
• Open every valve and check for weeping at the seams and the manway.
• Look inside the tank with a light for pitting and scale.
• Check the hose reel, hoses and fittings.
• Check the annual inspection sticker or report. Federal rules (49 CFR 396.17) require a commercial truck to pass an inspection at least once every 12 months, with the proof kept on the truck. Ask for the last tank certification too.
• Confirm the title is clean and in the seller's name, and that the VIN matches the door plate.

What should you ask the seller?

Ask what it hauled, when the pump was last rebuilt, and whether the title is clear.

• What did it haul? Septage, grease trap waste, drilling mud and industrial sludge wear a tank differently, and hazmat service changes the paperwork.
• When was the vacuum pump or blower last rebuilt, and who did the work?
• What are the engine hours, PTO hours and miles, and are the DPF and DEF service records on hand for a newer truck?
• Has the tank been repaired or welded, and is there a thickness test from after the repair?
• Is there a lien on the title, and is the title in the seller's name?
• Can you watch it load water from a tank or pit before you pay?

Selling yours

Buyers of vacuum trucks hold a CDL and know the market. Photograph the pump plate, the tank data plate, the odometer and hour meter, and the last inspection paperwork. Put chassis year, tank gallons and pump make in the title.

List it free on YardSwaps and hand it off at your yard.