How to choose a hot water pressure washer
Three numbers decide the machine. PSI is the force that lifts the dirt, GPM is the flow that carries it away, and temperature is what turns grease from a smear into something that rinses. For most commercial cleaning, flow matters more than pressure: a 4 GPM unit at 3,500 PSI clears a truck faster than a 2.5 GPM unit at 4,000 PSI, and an 8 GPM skid clears it faster still. Match the flow to your water supply, because a machine cannot pump more than the tap delivers.
Electric, gas or diesel hot water units
All electric hot water machines such as the Kranzle Therm and the BE electric series run indoors with no exhaust and suit wash bays, food plants and detail shops on 220 volt or three phase power. Gas engine units with a diesel fired burner, the Cam Spray 4040QB class, need no outlet at all and go wherever the truck goes. Diesel engine skids such as the Pressure-Pro Pro-Super Skid burn one fuel for engine and burner and are built for fleet yards and oilfield service trucks. See the full lineups in electric pressure washers, gas pressure washers and diesel pressure washers.
Skid, trailer or portable
A skid bolts into a truck bed or onto a trailer and stays there, which is the right answer for a mobile wash business or a fleet that washes at more than one yard. A portable unit on wheels is the pick for a single site, a farm or a dealership lot. If the water and the machine both stay put, a wall mount electric unit keeps the floor clear.
Burner fuel: diesel, natural gas or none
Most hot water units heat with a diesel fired burner, and a 12 volt version can run its burner controls from the truck battery. Natural gas heated units such as the BE HW255E1CNG connect to a building's gas line and never need fuel delivered, which suits restaurants, dairies and indoor bays. If you already run a cold water machine you like, a hot box adds a diesel burner between the pump and the gun.
Hot water versus cold water
Cold water handles dirt, mud and loose material. Hot water handles anything oily, greasy or organic, and it sanitizes in a way cold water cannot. If the surface leaves a film on your glove, buy hot water. The commercial pressure washers collection holds both so you can compare them side by side.
Hot water versus steam
A steam capable unit runs the burner hotter and the flow lower so the water leaves the nozzle as wet steam above 250 degrees. That is the setting for degreasing engines, stripping gum and grime from equipment, and sanitizing food surfaces where pressure would do damage. The Kranzle Therm series and several Pressure-Pro Dirt Laser hot water units carry a steam mode; they are grouped in steam pressure washers. For a fleet or a yard, hot water at full flow cleans faster than steam; steam is a specialist setting, not a bigger hot water machine.
Hot water machines we recommend by job
These four picks are the machines we would put on the truck for each job, chosen on flow rate, power available on site and how the unit travels, the three decisions the guide above explains.
BE HW3524HA12V for fleet washing
The BE Power Equipment HW3524HA12V hot water skid moves 8.5 GPM at 3,500 PSI with a Honda GX690, the flow rate that gets a tractor trailer done before the coffee cools.
Pressure-Pro SK40005VH for contractors
The Pressure-Pro Dirt Laser SK40005VH is a 4,000 PSI hot water skid with a 570cc Vanguard engine and water up to 250 degrees, sized for a truck bed and a full day of heavy equipment.
Kranzle K2175TST for indoor shops
The Kranzle K2175TST Therm hot water electric pressure washer runs on 220 volt single phase, can run in steam mode, and is the detail shop and service bay answer with no exhaust.
Cam Spray 4040QB for sites with no power
The Cam Spray 4040QB gas powered hot water pressure washer needs fuel and a hose, nothing else, and rolls on 13 inch wheels across a yard or a job site.
Freight, delivery and returns on machines
Free freight to the lower 48. Machines ship new from the manufacturer by freight carrier at no charge to a commercial address with a loading dock or forklift, or to the carrier's nearest terminal for pickup. Orders are prepared within 0 to 1 business days and delivery takes 5 to 8 business days.
Liftgate service, $95 flat. No dock or forklift? Choose liftgate service when you add the machine to the cart. The carrier calls ahead to schedule, brings the crate to your address and lowers it to the ground with a liftgate. It lands at the curb or driveway, not inside the building. One flat fee per order, whatever the machine weighs.
On delivery. Inspect the crate before signing. Note any damage on the delivery receipt and photograph it. We file the claim with the carrier, and if a replacement is needed we ship it.
Returns. Unused machines in original packaging can be returned within 30 days of delivery. A 20 percent restocking fee applies and return freight is the buyer's responsibility, and a refused freight delivery is handled the same way, which is why we would rather confirm the model before it ships: send the job, the water and the power on site through the form on this page and we check the spec against the machine. Full terms are on the shipping policy and return policy pages.
Not sure which machine fits the job? Answer a few quick questions and see the machines that fit, right here.
Prefer a person? Give us a call at (219) 327-1138. We are available Monday through Friday from 9:00 AM to 6:00 PM EST and one of our representatives will help you with what you're looking for.