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BE Hot Box Vertical Oil-Fired | 4-5GPM 12VDC

BE Hot Box Vertical Oil-Fired | 4-5GPM 12VDC

8402.90.0010 - 96012V

Add hot water to your existing pressure washing setup with this vertical oil-fired hot box made by BE. Designed for 4-5 GPM systems and powered by 12VDC.

đŸ”„ Add Heat to Cold Water Setups
Instantly turns your cold water pressure washer into a hot water machine! Works great for grease, oil, and heavy buildup.

⚡ 12VDC Powered
Runs off your existing battery system, no generator or wall outlet needed.

💧 4–5 GPM Rated
Dialed in for smaller belt drives or direct drive pressure washers—efficient heat without overload.

đŸ›ąïž Vertical Oil-Fired Burner
Compact and easy to mount on trailers or trucks. 

đŸ’Ș Built for Work Rigs
Whether you’re doing fleet washes, gas stations, restaurant cleanups, or just want faster results, this hot box is made to level up your wash game.

$3,099.00 USD
$3,398.00 USD $3,099.00 USD
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Frequently Asked Questions

What does a hot box do for my pressure washer?

A hot box heats up your water, turning your cold water setup into a hot water system. This helps break down grease, oil, and heavy buildup faster, so you can clean more effectively and get jobs done quicker.

How do I know which hot box size I need?

It's pretty simple. Use the 4–5 GPM hot box if your machine runs in the 4–5 GPM range. Go with the 8–10 GPM hot box if you’re running a higher flow rig or a two-gun setup. Matching your hot box to your GPM ensures consistent heat and avoids flow restrictions.

Can I run SH or chem through the hot box?

Absolutely not. Running SH or harsh chem through your hot box will damage the coil and components fast. Always apply your chem with a downstream injector or soft wash system, rinse thoroughly, and only run clean water through your hot box to keep it working for years.

Do I need a generator to run the hot box?

Nope! These BE hot boxes run off 12VDC power from your rig’s battery system, so you don’t need a separate generator or outlet—simple and efficient.