Cordless wet/dry vacuums have moved from convenience item to daily workhorse on construction sites. The newest generation pairs brushless motors with high-capacity batteries to deliver suction that competes with corded shop vacuums, without the extension cord and the outlet hunt. For crews that clean up at the end of every task, the shift is practical: fewer cords on the floor means fewer trip hazards, and cleanup time drops when the vacuum lives next to the work instead of in the truck. The growth of cordless wet/dry vacuums for construction jobsite cleanup follows the same battery-platform logic that reshaped drills and saws a decade earlier.
How Cordless Vacuum Power Compares to Corded Peak HP
Peak horsepower is the number printed on the box, and it measures the motor’s maximum theoretical output, not the suction you actually get at the hose. Corded wet/dry vacuums are commonly rated at 3.5 to 4.25 peak HP. The current cordless class is positioned directly against those figures: a single-battery head is matched against 3.5 peak HP corded models, and a dual-battery head against 4.25 peak HP models. Two things make the comparison credible in real use. The brushless motor delivers consistent power across the battery range instead of sagging as the charge drops, and the sealed airflow path keeps efficiency high. The motor heads also carry two settings, max power and max runtime, so the same vacuum can sprint through a wet spill or cruise through a dry sweep. A 6-gallon tank with a single-battery head covers the light cleanup a trim crew does between rooms, while the larger tanks suit crews that leave the machine running for hours.
The headline numbers still deserve a skeptical look. Peak HP is measured at the motor with no load, while jobsite cleaning happens at the end of a hose with a nozzle attached. What matters more is sustained airflow, measured in CFM, and water lift, measured in inches. A cleaner that holds its airflow at the nozzle cleans faster than one with a higher peak number that drops off under load. Before comparing specs, review what to look for in cordless wet/dry vacuums, because the checklist separates marketing claims from measurable performance.
- Peak HP rating versus tested CFM at the nozzle.
- Water lift in inches, which predicts how well the vacuum pulls standing water.
- Motor settings, since a two-mode head gives you a choice between suction and battery life on the same tool.
- Filter performance, because a clogged filter cuts airflow faster than any motor difference.
Tank Sizes, Motor Heads, and the Accessory Ecosystem
Tank capacity determines how long you can work before dumping, and the current cordless line comes in three sizes: 6, 9, and 12 gallons. The 6-gallon model pairs with a single-battery motor head, while the larger tanks come standard with a dual-battery head. The motor heads, tanks, and rolling carts are designed to be interchangeable, so a crew can run the same head on different tanks or upgrade the cart without replacing the whole machine. A separate AC-powered head, rated at 6.5 HP, extends the same tank system to work near an outlet when battery runtime is not enough. Interchangeability matters on mixed fleets, because a crew can standardize on one tank size and keep a second head as a spare without buying a complete second machine.
Accessories decide how useful a vacuum is on a specific trade. The current ecosystem includes 19 attachments plus a standard assortment of filters, bags, nozzles, hoses, and extension wands, with trade-focused designs for reaching into tight spaces and picking up dust from finished surfaces. The attachments are also built to fit other wet/dry vacuum brands, which matters for crews that already own a corded machine and want one cordless head plus shared accessories. Reviews of the AIR-TIP accessories emphasize the long-reach flexible nozzle and the dust-specific tips as the ones crews actually reach for daily.
Accessory Categories Worth Owning
- Long-reach flexible nozzle for tight spaces and above-ceiling work.
- Dust-specific tips for drywall and concrete dust.
- Crevice tool and brush for finished trim and fixtures.
- Extension wands to clean floors from a standing position.
- Wet pickup kit with a dedicated filter and squeegee nozzle for standing water.
Runtime and Battery Strategy on the Jobsite
The trade-off for going cordless is runtime. Published figures for a single-battery head on a full 12.0 Ah pack put max power mode at roughly 31 minutes of continuous running or 1,000 square feet of coverage, and max runtime mode at 47 minutes or 1,300 square feet. The dual-battery head extends those numbers to 34 minutes or 1,400 square feet in max power and 49 minutes or 1,600 square feet in max runtime. The table below summarizes the published numbers. Runtime estimates assume a full pack and clean filters, so treat them as planning numbers rather than guarantees.
| Configuration | Mode | Runtime | Coverage |
|---|---|---|---|
| Single battery | Max power | 31 minutes | 1,000 square feet |
| Single battery | Max runtime | 47 minutes | 1,300 square feet |
| Dual battery | Max power | 34 minutes | 1,400 square feet |
| Dual battery | Max runtime | 49 minutes | 1,600 square feet |
The dual-battery head draws from both packs at once, which is why it runs longer despite moving more air. High-output batteries matter here, because the head is designed for them and standard-capacity packs shorten runtime noticeably. The published numbers assume a full charge and continuous operation, so real crews see less, especially when picking up heavy debris. Crews that clean throughout the day plan around the same rotation they use for drills: one pack on the tool, one on the charger, and a spare in the truck. That rotation is a large part of how cordless wet/dry vacuums improve construction jobsite cleanup in practice, because the machine is only useful when it has power.
Filtration, Hoses, and Durability Details
Filtration is where wet/dry vacuums quietly win or lose the day. A standard filter handles dry dust and can be swapped for a wet filter when picking up water, and some models add HEPA-rated filters for dust-sensitive environments. On drywall and concrete jobs, dust control is not just a preference. Silica dust exposure rules push crews toward vacuums with HEPA-rated filtration and proper bag sealing, and a cordless machine that meets the standard protects both the crew and the schedule. Bags extend filter life on dry jobs, and a spare filter in the truck turns a clogged shutdown into a two-minute fix. The relationship between power, filtration, and jobsite cleanup is direct: a well-filtered machine holds its airflow, and holding airflow is what cleans faster with less battery draw.
Durability follows the parts that touch the ground. Crush-resistant hoses keep suction even when a ladder or a sheet of plywood lands on them, and reinforced casters and treads survive the trip across rebar and concrete. Hoses that resist twisting make the vacuum easier to drag through doorways. On a cordless machine, every watt spent fighting a kinked hose or a clogged filter is a watt that does not move debris.
Cordless vs Corded: Matching the Machine to the Task
The decision between cordless and corded comes down to the site. Cordless wins on sites without reliable power, on punch lists that move room to room, and for quick cleanups between tasks. Corded wins for marathon cleanup at the end of a project, where a 6.5 HP head with unlimited runtime beats any battery rotation. Rental and demo sites often have power drops already stubbed in, which tilts the choice toward corded; remodels and punch work rarely do. Truck space is part of the math too, since a 6-gallon cordless unit takes up a fraction of the bed space a corded 12-gallon machine needs. Many crews run both: a corded machine for deep cleans and a cordless one for the daily cycle.
What Field Pros Should Compare
- Peak HP and CFM at the nozzle, not just the motor rating.
- Runtime per battery size in the mode you will actually use.
- Tank size against how often you can dump.
- Filter and bag costs over a year of use.
- Wheel and hose durability for the terrain you work on.
- Battery platform, because a vacuum that shares batteries with your drills and saws costs less to run than one on a separate system.
That last point is often the deciding factor. A vacuum on your existing power, filtration, and platform choices adds capability without a new charger and a new battery family, while a stand-alone system doubles your spares. The full comparison in cordless vs corded wet/dry vacuums lays the numbers out side by side, and the answer usually lands on the same rule that governs every other tool purchase: buy the machine that matches the work you do most weeks, not the one with the biggest number on the box.