I Tested 5 Ways to Sleep in a Truck at 20°F — A Clear Winner!?, by Garrett Sanders on YouTube. 16 min 43 s.
- Video length
- 16 min 43 s
- Time to do it
- 45 minutes
- Difficulty
- Medium
- Steps
- 9
What you need
Steps
Start with the base. Lay a closed-cell foam pad on the truck bed floor, then put your air pad or mattress on top. Most heat drains straight through the floor.
Add a second foam layer or a wool blanket under your sleeping bag when the forecast drops below freezing. Two thin layers beat one thick one.
Pick a bag rated about 20°F colder than the overnight low. Sleep in a dry base layer with a hat and socks on.
Cut reflective foil or foam panels to fit each window and press them into the glass. This cuts radiant heat loss and stops condensation running onto your bedding.
Crack one window or vent about a thumb's width. You need airflow to carry your breath moisture out, even on a cold night.
Do not idle the engine all night. It burns fuel, makes noise and can let exhaust into the cab or bed area.
If you use a propane heater, run it only to take the chill off before bed. Shut it off before you sleep and store the cylinder outside the sleeping area.
Test any 12V heated mattress on your battery or power bank at home first. Note the amp draw and the runtime before you rely on it.
Do one dry run in the driveway. Check in the morning for damp patches on the bag and fogged panels, then adjust your layers.
Tips and common mistakes
Never sleep with a propane heater or idling engine running in an enclosed space, because carbon monoxide has no smell.
Ventilation feels wrong on a freezing night, but trapped breath moisture is what makes a bag feel cold by 3am.
Insulate under you as much as over you, since the truck bed pulls heat out faster than the air does.
Keep a dry hat and spare socks in the cab so you can change if you sweat during the night.
Questions
Do I need a heater to sleep in a truck at 20°F?
No. A foam pad under an insulated air pad, a cold-rated bag and insulated windows keep you warm without fuel or power. Heaters mainly help before bed, not through the night.
Why does my sleeping pad feel cold underneath me?
Air pads move heat away from your body through convection. A closed-cell foam pad underneath blocks that loss and adds a safety layer if the air pad deflates.
How do I stop condensation inside a truck bed?
Leave a vent or window cracked for airflow and insulate the cold glass so moisture does not condense on it. Wipe down any damp panels in the morning before you pack up.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
