Software for the yard running hydro excavators.

A hydro excavator digs with water and air instead of a steel bucket: a high-pressure lance cuts the soil into slurry, and a powerful blower vacuums that slurry into a debris tank. That is why crews reach for one — it exposes buried pipe, fiber, and cable without the bucket strike that a backhoe risks, and it works frozen or congested ground where mechanical digging is too dangerous or simply will not go. The same qualities make it a demanding unit to run as a rental. It cycles between digging, hauling spoil, and dumping; it drinks water; and the two systems that do the work, the water pump and the vacuum blower, are unforgiving when grit, dry running, or a hard freeze gets to them. EquipFlow runs hydro excavators the way the yard that built it runs its own — one record per unit for dispatch, billing, maintenance, and return.

Built inside Rental King, right now.

Rental King is a heavy-equipment rental yard in Odessa and Midland, TX. They run hydro excavators, manlifts, forklifts, light towers, generators, compressors, and water trucks on MSA contracts through the Permian Basin — 24/7, oilfield pace. EquipFlow was designed and first deployed inside that yard. Every feature was tested against their live operation before it shipped. The product runs there today.

A hydro excavator is a high-cost machine that earns through a cycle, not a single drop-off, and money leaks at both ends of that cycle. It leaks when the waiting time — on a locate, a permit, a clearance — never reaches the invoice as standby. It leaks again when a unit comes back with a full or hardened debris tank, or a scored blower, and the yard eats a cleanout or a repair it never charged. The hour meter is the spine of both maintenance and billing, so it has to be captured the same way every return, against the rental record. When dispatch, billing, maintenance, and inspection all read from one unit record, the dispatcher quotes the negotiated rate, the mechanic services the pump and blower on real hours, and the bookkeeper closes the month without rebuilding the trip from memory.

Hydro Excavator specs the rental record tracks.

Every number below is a sourced specification range. The render layer is the only path these values reach the page — they live on the unit record, not in a dispatcher's head.

Debris tank capacity

3.5-15yd³

Fresh water tank capacity

500-1500gal

Blower airflow

2200-6176cfm

Peak vacuum

18-28in-Hg

Water pump pressure

3000-4000psi

Water pump flow

4.2-24.5gpm

Boom reach

22-28.5ft

How EquipFlow handles hydro excavators on the dispatch board.

A hydro excavator is not a drop-and-leave unit; it runs a cycle of dig, fill the debris tank, haul to a dump or disposal site, empty, and return. The dispatch board treats that round trip as the planning unit, because where the unit can legally and practically dump its spoil is as much a constraint as where it digs. Water is the other variable the board has to respect: a unit that runs the fresh tank dry stops cutting, so dispatch confirms a fill source or pairs the job with a water truck before the unit leaves. Most yards run a thin fleet of these, so the same machine is double-booked easily across overlapping locate-and-dig windows; the board surfaces that conflict at assignment, and confirms the dump plan, cold-weather boiler, and required hose lengths on the rental record before the truck rolls.

Billing hydro excavators — MSA, standby, and site-level tax.

Hydro excavator demand in the oilfield and utility world runs on master service agreements, so the negotiated rate lives as an override on the customer record per equipment class rather than a sheet the dispatcher keeps in their head. A unit created for that account picks up the right rate automatically. These machines spend real time waiting — on a utility locate, on a permit, on a one-call clearance — and that idle time is exactly where standby billing earns its keep: the dispatcher marks standby hours and the invoice carries active and standby as separate lines without a month-end reconstruction. Disposal, water, mobilization, and after-hours charges ride the same invoice. Tax jurisdiction is set on the delivery-site record, so a unit that worked across more than one county still bills the right rate per site. Invoices post to QuickBooks Online on close.

Maintenance on hydro excavators.

PM on a hydro excavator runs off the hour meter, not the calendar, because a unit on a steady locate-and-dig program can burn an interval in a matter of weeks while a yard spare sits for a season. The hour reading is captured on the return inspection and posts to the unit record, and the maintenance module advances the PM clock from that reading so the next service lands on real usage. Two systems carry the work and drive the PM: the high-pressure water side — pump, unloader, lance, and hose — and the vacuum side — the blower, filtration, and the cyclone or baghouse that protects the blower from grit. The water pump and the blower are the expensive failures, so service leans on filter changes, pump oil, and blower oil alongside the chassis and engine. Work orders, parts, and meter history live on the unit record, which is also where a damage charge from a return inspection becomes a repair ticket.

Hydro Excavator return inspections.

Two inspection rhythms apply. The operator runs a pre-job check while the unit is on rent — water level, blower oil, hose and lance condition, and the debris-tank door seal — and that check is the customer's responsibility in the field. The yard's own control is the return inspection: before a hydro excavator comes off rent, the driver runs a mobile-web checklist on a phone — no app install — records the hour-meter reading, and attaches required photos that cannot be skipped. The checks that matter here are specific to the machine: a debris tank returned full or with caked, hardened spoil; the rear-door seal and hydraulic hoist; blower filtration and any sign of grit carryover; pump pressure and the condition of the dig wand and vacuum hose. The inspection ties to the rental record before the truck leaves, so a dispute over a fouled tank or a torn hose has photos and a timestamp behind it.

Common hydro excavator classes in the field.

The product, the same way it runs for hydro excavators.

The sections below are the EquipFlow modules that matter most when running hydro excavators — each links to the full feature detail.

Operator guides for running hydro excavators.

Field-tested playbooks that go deeper on pricing, dispatch, billing, and maintenance for fleets like this.

• Trenching Equipment Rental Guide →
• Adding a New Equipment Category to Your Yard →
• Aerial Lift Inspection Requirements →
• Air Quality Equipment Rentals →

What you give up running hydro excavators in EquipFlow.

EquipFlow is a web app, so the return inspection needs a signal to load. On a remote pad or a deep right-of-way with no coverage, the driver cannot finish the mobile inspection at the site; most yards run it at the yard on return, which means the tank photos and hour reading land later than ideal. There is no built-in telematics integration today, so water-system pressure, blower hours, and fault data from a manufacturer portal are not pulled in automatically — the hour meter is captured at return instead. And the rate logic is built around the master-agreement-and-standby model the oilfield and utility trades run on; a yard with an unusual billing structure should bring it to the demo to be scoped honestly.