Designed for Canadian winters Available in Canada Brampton · Mississauga · Hamilton · Toronto
AutoCoolParts
Cooling / Electric AC Text us

More info

Heater details, cold check & FAQ

Everything about our four truck heaters in one place. Questions? Tap WhatsApp or Text at any time.

The lineup

Four heaters. One job: keep you moving all winter.

Specs below are typical for each category. Exact output and draw depend on the model. Send us your truck details and we'll confirm the right unit.

Sleeper cabs · Overnight

Bunk Diesel Heater

Quiet, engine-off heat for your sleeper, running off your truck's own fuel tank.

The painTen-hour break at a lay-by, −30°C outside. Either idle all night and burn fuel, or shut down and wake up to frost on the bunk wall.

A compact 2 kW heater mounted under the bunk or in a side box keeps the sleeper at the temperature you set. Dry heat means less condensation, and a low-voltage cut-off shuts it down before your start batteries are at risk.

  • Long-haul sleepers
  • Team drivers
  • Northern Ontario & Prairie routes
Text us about the bunk heater →

Starts a text message

Where it mounts
AutoCoolParts bunk diesel heater in its box with 10 litre fuel tank and user manual
Heat output
2 kW (≈6,800 BTU/h) · 4–5 kW option
Voltage
12 V or 24 V
Fuel use
≈0.1–0.25 L/h vs 3–4 L/h idling
Running draw
≈10–30 W after start-up
Controls
Thermostat, timer, remote
Fuel source
10 L tank included, or truck tank via standpipe
In the kit
Fuel pump, exhaust, silencer, air ducting, outlet vent, mounting plate, controller, remote

Engine pre-heat · Cold starts

Coolant Heater

Warms your engine coolant before you turn the key, so the truck starts easily and the cab is warm from the first minute.

The pain5 a.m., −32°C. The starter groans, the oil is like molasses, there's no plug for the block heater, and dispatch is already calling.

Set the timer the night before. The heater circulates hot coolant through the engine and the truck's own heater core, so the engine turns over easily, the windshield defrosts, and you skip the long warm-up idle.

  • Class 8 tractors
  • Dump & plow trucks
  • Buses & equipment
Text us about the coolant heater →

Starts a text message

Where it mounts
Silver 5 kW liquid coolant heater with mobile controller and quick guide
Model shown
LQ-4G liquid heater
Heat output
5 kW (≈17,000 BTU/h)
Voltage
12 V
Fuel use
≈0.3–0.6 L/h while heating
Pre-heat time
≈30–60 min, depending on cold
Controls
Mobile controller with antenna, timer
In the kit
Water pump, fuel pump, hoses, T-fittings, exhaust, silencer, bracket

Cabs · Cargo · Service bodies

Diesel Air Heater

More output for bigger spaces: day cabs, cube vans, service trucks, equipment cabs and shops.

The painYour service truck or excavator cab turns into a freezer the moment you shut down, and your tools and hands are too cold to work.

A 5 or 8 kW forced-air unit heats a larger space fast and can be ducted to one or two outlets. It runs on diesel from the vehicle's tank or a separate tank, so it works wherever you are parked.

  • Day cabs
  • Tow & service trucks
  • Cube vans & campers
  • Equipment cabs
Text us about the diesel air heater →

Starts a text message

Heat output
5 kW (≈17,000 BTU/h) · 8 kW (≈27,000)
Voltage
12 V or 24 V
Fuel use
≈0.14–0.6 L/h
Air
Dry heat, ducts to 1–2 outlets
Controls
LCD thermostat, timer, remote
Fuel source
Vehicle tank or separate tank

No install · Grab and go

Portable Diesel Heater

An all-in-one heater with its own 5 L fuel tank. Carry it to the truck, the trailer, the garage or the camp. Available in an upright body and a compact body.

The painA leased or borrowed truck you can't drill into. A breakdown on the shoulder. A jobsite trailer with no heat. You need warmth tonight, not an install appointment.

Set it outside or in a vented compartment, run the warm-air duct inside, and connect to 12 V or a wall outlet with the included adapter. The LCD controller clips off the unit, and the key-fob remote lets you adjust heat from the bunk. Twin fuel gauges show how much diesel is left.

  • Leased trucks
  • Jobsites & garages
  • Hunting camps & ice huts
Text us about the portable heater →

Starts a text message

Upright portable diesel heater: LCD controller, key-fob remote and warm-air outlet
Model shown
XMZ-D1, 5 kW or 8 kW
Heat output
5 kW (≈17,000 BTU/h) · 8 kW (≈27,000)
Power
12 V, 40 W rated · wall adapter included
Fuel tank
5 L built in, ≈0.14–0.6 L/h
Controls
Detachable LCD controller, key-fob remote
In the box
Exhaust pipe, silencer, air duct, outlet vent, clamps

The northern night shift

Every driver north of the 401 knows these mornings.

−15°C and colder

Idling all night just to stay warm

A Class 8 truck at idle burns roughly 3–4 L of diesel an hour. Over a 10-hour break that adds up fast, adds engine hours, and runs into idling bylaws in many Ontario towns.

Fix: Bunk diesel heater, about 0.1–0.25 L/h →
−25°C and colder

The engine won't turn over at 5 a.m.

Oil thickens, batteries lose much of their cranking power, and the starter grinds. Every hard cold start wears the engine and puts your load behind schedule.

Fix: Coolant pre-heater on a timer →
Any cold night

Frost inside the bunk, ice on the glass

Your breath condenses on the sleeper walls and freezes. In the morning you scrape the windshield before you can pre-trip, and you pull out with a cold cab.

Fix: Dry diesel heat and a warm defroster →
Remote routes

No place to plug in the block heater

Lay-bys on Hwy 11 and Hwy 17, fuel stops in the Prairies, customer yards: most have no shore power. A block heater does nothing without a cord.

Fix: Heaters that run from your own tank →

Cold check

How cold does your route get?

Pick a route or drag the thermometer. See what starts to fail at that temperature, then tell us how you park. We'll show the heater setup that fits.

−28°C (−18°F)
  1. −2°CCondensation in the bunk and on the glass freezes overnight.
  2. −10°CSummer-grade diesel starts to cloud. Fuel filters can wax up.
  3. −18°CBatteries have lost a big share of their cranking power.
  4. −25°CEngine oil is thick. Cold cranks strain the starter and the engine.
  5. −32°CUnplugged diesels often won't start without pre-heat.
  6. −40°CHeat is survival gear. A no-start on a remote stretch is a safety issue.
How do you park? Pick any that apply

Our match for −28°C

    Ask about this setup

    Starts a text message

    What you actually get

    Complete kits in the box.

    Complete bunk heater kit with 10 litre tank, fuel pump, exhaust, silencer, ducting and controller
    Bunk heater + full kit
    Upright portable heater with exhaust pipe, silencer, air duct, outlet vents, clamps, wall adapter and manual
    Upright portable + full kit
    Compact portable heater with exhaust pipe, silencer, air duct, vents, mounting feet, wall adapter and manual
    Compact portable + full kit
    Coolant heater kit with water pump, fuel pump, hoses, fittings and controller
    Coolant heater install kit

    Why AutoCoolParts

    High quality. Priced for the people who drive.

    Big-brand heaters are good, and they carry big-brand markups. We stock heaters that do the same job in a Canadian winter, with complete kits and a local team that answers your messages.

    Built for the cold
    12 V units chosen for Canadian truck use, with thermostat control and low-voltage protection.
    Complete kits
    Exhaust, ducting, fuel line and controller in the box. No surprise add-ons at install time.
    Matched to your truck
    We ask about your truck, batteries and route before we recommend anything.
    Local in Ontario
    Pickup in Brampton, Mississauga, Hamilton or Toronto, or shipping anywhere in Canada.
    Help after the sale
    Install guidance, error-code help and spare parts when you need them.

    Questions drivers ask

    Before you buy

    Is it safe to run a diesel heater in my sleeper overnight?

    The burner is sealed and the exhaust is piped outside the cab, so combustion air never mixes with the air you breathe. Install it as the manual shows, keep the exhaust outlet clear of snow, and keep a CO detector in the sleeper, as you should with any fuel-burning heater.

    Will it drain my batteries?

    The glow plug draws more power for the first couple of minutes. After that a bunk heater uses roughly 10–30 W. Low-voltage protection shuts it off before your batteries get too low to start the truck. Tell us your battery setup and we'll check it.

    Does it work at −40°C?

    Yes, with winter-grade diesel. The heater draws the same fuel as your engine, so keep your fuel treated for the season. For the coldest routes we usually pair a bunk heater with a coolant heater.

    Coolant heater or block heater?

    A block heater only works when you can plug in. A coolant heater runs on diesel and 12 V wherever you park, and it warms the cab and defrosts the windshield too.

    Why don't you list prices online?

    The right setup depends on your truck, voltage, route and how you want it installed. Text those details and we'll quote the complete package so there are no surprises.

    Can I use these in a van, RV, boat or cabin?

    Yes. The diesel air and portable heaters work well in vans, campers, workshops and camps. Tell us the space and we'll size it.

    Get matched

    Tell us your truck. We'll match the heater.

    Send us a WhatsApp or text with your truck, the heater you're looking at, your city and the coldest route you run. We'll reply with the right setup and a quote for the complete package.

    Message us

    Text message

    Each button opens a short message with your truck, heater and city ready to fill in.