What is a good 12v 8gpm hot box?

Heater, Hot Box, call it what you will, but get one that lasts.

___ BullDogPRO Pressure Washers (Heaters & all) by Jerry@PressureWasher.net
___ The most reliable heaters made period.. Nobody else gets 12 to15 years on a coil.
___ .. Nobody else gets 4 years on an HV Ignitor @12 voltsDC.
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___ there's lots of options.. 12 or 24vDC, 120 or 220vAC,
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e-mail me for quote & options ..
 

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Water Heaters.jpg
Roy, you'd be much better off with a 120 volt heater to get a decent rise on the water temperature at 8 gpm. The ADC burner has a very small fan in it, so you can only put so much fuel through it before getting a sooty burn. The SDC burner will support a higher combustion rate, but you've got to have a high amp charging system to feed it. Farley's is a real good choice as well as Click Industries.
 
What you need to figure out is how hot you want to go, more btu's is more heat, but also drinks diesel faster.

Also you can add your own fuel tank, ie a marine 12 gallon tank will work fine, although you will have to put a return on the top of the tank. I got a largo with the 7-8 gallon tank, its way too small. I have an 80g side tank on my freightliner with a 12v fuel pump to keep filling her with, but without it you have to bring a couple jerry can's.

Also I would stick to a 1/2 inch coil, I have learned 3/4 inch coil has it's draw backs. Long story short, if you plan on doing most of your washing under 10 gpm stick with a 1/2 inch.
 
This will be my first hot box so it is all new to me. It will be for fleet washing and going in a box truck. Ideally I wish I could buy a new hot water skid frame with burner and put my cold water machine on it and add a generator to it and have a hot skid. I am looking and will be calling some vendors to get a better feel for what I need.
 
I have seen many guys buy a smaller burner saying I don't need it big, to upgrade 6 months to a year later to the bigger size.

The 24 inch size will give you more coil space which allows more surface area to heat the water. Con's, it is heavier, takes more space, and a longer coil can mean a greater psi drop as well (Not as bad on a 1/2 inch vs 3/8 inch).

I would get a larger burner, but get a thermostat built in which will allow you to best regulate the heat. Need less heat turn it down so you use less fuel, more heat you turn it up and watch the diesel tank empty.

I have always done 120v separate hot box's with generators, rarely do I have problems, and if I do I can normally fix it on site.
 
Benjamin said:
I have seen many guys buy a smaller burner saying I don't need it big, to upgrade 6 months to a year later to the bigger size.

The 24 inch size will give you more coil space which allows more surface area to heat the water. Con's, it is heavier, takes more space, and a longer coil can mean a greater psi drop as well (Not as bad on a 1/2 inch vs 3/8 inch).

I would get a larger burner, but get a thermostat built in which will allow you to best regulate the heat. Need less heat turn it down so you use less fuel, more heat you turn it up and watch the diesel tank empty.

I have always done 120v separate hot box's with generators, rarely do I have problems, and if I do I can normally fix it on site.
Click to expand...

Thanks for the information. I think I will just have to do the separate hot box and generator. Didn't really want another machine to be fueling but I can make do with it.
 
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