Winter camping in your pickup truck is a beautiful adventure. There are no bugs, no crowded campsites, and you wake up to amazing snowy mountains. But when the sun goes down, sleeping in the back of a truck can get dangerously cold.
A metal truck bed does not hold heat very well. If you are reading our truck topper camping guide to plan a winter trip, learning how to stay warm is your number one job.
Here are the best ways to heat your truck canopy and stay cozy in freezing weather.
1. Stop the Cold Before You Heat (Insulation)
You cannot heat a tent if the window is open. The same rule applies to your truck canopy. Before you spend money on a heater, you must insulate your space.
Start with the floor. The metal truck bed will pull the heat right out of your body. Put down a thick rubber mat or build a wooden sleeping platform. Next, make sure the roof of your canopy is lined with automotive carpet. This prevents your body heat from escaping through the ceiling.
If you live in places with heavy snow, you will want a tough shell. Check out our guide on the best truck canopies for cold climates to see why strong metal walls are better than soft covers in the winter.
2. The Diesel Heater (The Best Choice)
The most popular way to heat an ultimate overland truck build is by using a portable "diesel heater."
These are small metal boxes that run on diesel fuel. You set the heater outside your truck, on the ground. It burns the fuel outside, but it blows super hot, clean air through a flexible tube right into your canopy window.
This is the safest and best method because there is no fire or exhaust gas inside the truck with you. It also blows "dry" heat, which keeps your blankets from getting wet.
3. 12-Volt Electric Blankets
If you do not want to use a fuel heater, an electric blanket is an awesome backup.
You can plug a 12-volt heated blanket into a portable power station (like a Jackery). Instead of heating the whole air inside the big canopy, the blanket only heats you. This uses very little electricity, and you can stay perfectly warm all night under your sleeping bag.
4. The Danger of Propane Heaters (A Warning)
Many people try to use small indoor propane heaters (like the "Mr. Heater Buddy") inside their truck canopy. This is very dangerous for two reasons.
First, burning propane creates Carbon Monoxide gas, which can be deadly in a small, closed space. You must leave a window open for fresh air. Second, burning propane releases a ton of water into the air. This water will turn into ice on the inside of your canopy windows, and your sleeping bag will feel damp and cold by morning. Stick to diesel heaters or electric blankets!
Frequently Asked Questions (FAQ)
Does salt and snow ruin my truck canopy? Winter roads are covered in salt, which can cause metal to rust. High-quality steel and aluminum canopies use thick powder coating to stop rust, but you still need to wash your truck. Read our steel camper shell winter maintenance guide to learn how to clean it safely in the winter.
Will a candle keep my truck canopy warm? Some people say lighting a candle inside a truck bed will raise the temperature. While it might give off a tiny bit of heat, it is a massive fire hazard! If you kick the candle over in your sleep, your sleeping bag can catch on fire. Never sleep with an open flame in your truck.
How cold is too cold for truck camping? With a good diesel heater and an insulated sleeping bag, you can safely camp in temperatures as low as 0°F (-18°C). If you don't have a heater, you should not camp if the temperature drops below freezing (32°F / 0°C).