Diesel Exhaust Fluid (DEF) heating and freeze protection
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Fleet & Fuel

Diesel Exhaust Fluid (DEF) Heating & Freeze Protection

Keep DEF above its freeze point in totes, drums, and tanks so fleets and equipment stay compliant and running.

The Cold Problem

Heat Where Diesel Exhaust Fluid (DEF) Needs It

Diesel exhaust fluid freezes at about 12°F (−11°C), and frozen or degraded DEF means SCR faults, derated engines, and downtime. Storage and dispensing have to stay above that point through the cold season.

AG Heat provides freeze protection and gentle warming for DEF in totes, drums, and bulk tanks, plus heated dispensing lines — keeping fleets, equipment, and fueling operations compliant and moving in winter.

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Where Heat Matters
  • Freeze protection for DEF in 275 and 330-gallon totes
  • Warming DEF drums and bulk tanks above the 12°F freeze point
  • Heat-tracing DEF dispensing and transfer lines
  • Protecting DEF quality and concentration through the cold season
  • Keeping fleet and equipment fueling operational in winter
Recommended Products

Heating That Fits Diesel Exhaust Fluid (DEF)

DEF Storage Heaters

Freeze protection and warming for diesel exhaust fluid (DEF) in totes, drums, and tanks.

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Tote & IBC Heaters

Full-coverage heated jackets for 275 and 330-gallon IBC totes.

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Drum & Barrel Heaters

Wrap-around heaters that thaw, warm, and hold drum product at temperature.

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Tank & Vessel Heaters

Custom-fit heated jackets that warm and freeze-protect tanks and vessels of any size.

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Pipe & Freeze Protection

Heat trace and wraps that stop pipes and valves from freezing.

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Resources

Related Guides

FAQ

Diesel Exhaust Fluid (DEF) Heating — Common Questions

At what temperature does DEF freeze, and how do I prevent it?

DEF freezes at about 12F (-11C). A DEF-rated tote, drum, or tank heater holds it above freezing with controlled heat that does not overheat and degrade the fluid.

What happens if DEF freezes in a fleet or dispensing operation?

Frozen DEF strands trucks and dispensers, and SCR systems derate engines without usable DEF, taking vehicles out of service.

Get Started

Tell Us What You Need to Heat

Give us the container, the product, and the conditions. We’ll match you to the right solution — fast.

Email Us Call 801-244-9769

info@ag-heat.com  ·  801-244-9769  ·  Salt Lake City, UT