The best pressure washer trailer for a fleet washing business is a hot water rig that puts out 5 to 8 GPM per gun, carries 500+ gallons of water and can add wash water recovery when you wash on customer lots. For one crew washing box trucks and tractors, that's usually the General TA3 MCS-3008 (7.8 GPM at 3,000 PSI, 535-gallon tank). For multi-truck routes with up to four operators, it's the General TA3 (2)MCS-3506.
Below are the builds we'd short-list by fleet size, with real specs and listed starting prices on hotandmightydirect.com as of November 2026. Final pricing is always in your written quote.
Which fleet washing trailer fits your fleet size?
Match the rig to how many trucks you wash per stop and how many operators you run. Flow (GPM) decides how fast you wash a truck; tank size decides how long you wash between refills.
| Your fleet work | Build | Washer output | Platform | Listed starting price |
|---|---|---|---|---|
| Starting out: pickups, vans, small local fleets, 1 operator | Open A1 MCS-3506 | 5.6 GPM at 3,500 PSI, hot water | Single axle open trailer, 21" stainless surface cleaner | $19,820 |
| Box trucks and tractors, 1–2 operators | Money Maker 3008 | 8 GPM at 3,000 PSI, hot water | 7' x 14' open deck, tandem 3,500 lb axles | $28,995 |
| Daily routes, equipment locked up between stops | General TA3 MCS-3008 | 7.8 GPM at 3,000 PSI (one gun), or about 4 GPM each for two | Enclosed, 535-gallon tank, tandem 5,200 lb axles | $39,490 |
| Washing through winter | General TA3 MCS-3506 CWP | 6 GPM at 3,500 PSI, hot water | Insulated 7' x 16' enclosed trailer with cold weather package, tandem 5,200 lb axles | $42,610 |
| Multi-truck fleets, up to 4 operators | General TA3 (2)MCS-3506 | Two washers, 6 GPM at 3,500 PSI each | Enclosed 7' x 14', 535-gallon tank, tandem 5,200 lb axles | $49,760 |
| Washing on lots that must capture and reuse wash water | General XLT TA6 (2) MCS-3506 MV23-450 WR2020 | Two washers, 5.7 GPM at 3,500 PSI each | Enclosed, 450 CFM recovery vacuum, 20 micron recycling | $89,560 |
Every build is made to order, so axle count, tank size, reels and detergent setup can change to fit what you tow and what you wash.
How much GPM and PSI do you need to wash trucks?
Flow matters more than pressure for fleet work. Road film, diesel soot and grease come off faster with 5 to 8 GPM of hot water at 3,000 to 3,500 PSI than with higher pressure at lower flow.
If two operators share one washer, each gun gets about half the flow. That's why multi-truck crews do better with two washers on one trailer, like the General TA3 (2)MCS-3506.
Do you need wash water recovery for fleet washing?
If you wash on customer lots, often yes. Many cities, including large ones in California and Texas, don't allow wash water into storm drains, and fleet customers increasingly ask their wash contractor how runoff is handled.
Wash water recovery is what sets a fleet washing business apart when it bids those accounts. You can buy it built in, like the General XLT above, or add it later: our 250 CFM Recovery Vacuum is listed from $12,460, the 450 CFM Recovery Vacuum from $16,490 and the WR2020 Recycling System (20 micron filtration, up to 20 GPM) from $12,810. See adding wash water recovery to your existing pressure washer.
Open deck or enclosed trailer for fleet washing?
Open deck trailers cost less and are easy to work around. Enclosed trailers keep washers, reels and chemicals locked, dry and out of sight between stops, and they can be insulated and heated for winter routes.
If you wash year-round in cold states, look at our cold weather packages. For a full price breakdown across open, enclosed and recovery builds, see our pressure washer trailer cost guide.
Frequently asked questions
What is the best pressure washer trailer for a fleet washing business?
A hot water trailer with 5 to 8 GPM per gun, a 500+ gallon tank and the option to add wash water recovery. For one crew, the General TA3 MCS-3008 (7.8 GPM at 3,000 PSI, 535 gallons); for up to four operators, the General TA3 (2)MCS-3506.
How much does a fleet washing trailer cost?
Listed starting prices on hotandmightydirect.com as of November 2026 run from $19,820 for a single-operator open trailer to $89,560 for an enclosed wash, recovery and recycling trailer. Your written quote has final pricing and build time.
Hot water or cold water for fleet washing?
Hot water. It cuts diesel soot, grease and road film faster and uses less detergent, which matters when you wash many trucks per stop.
Can I add wash water recovery later?
Yes. A recovery vacuum and recycling system can be added to most existing trailers, starting with the 250 CFM Recovery Vacuum listed from $12,460.
Do you deliver fleet washing trailers outside your area?
Yes. Every trailer is built to spec and delivered nationwide, with free training at pickup or recorded and live remote training for delivered units.
Ready to spec a fleet rig? Text us at 574-233-9111 or call 800-897-7515, Monday–Friday 9–5 EST. We keep trailers and washers in stock for quicker builds, and every quote includes the build time.
