Does it really work at high altitude?

The heater has automatic altitude compensation and is rated for use up to about 18,045 ft. That adjusts the fuel-air mix so it keeps running where a fixed-setting heater would run rich and soot up.

Three ways: the LCD panel on the unit, the included 32 ft remote, and the Bluetooth app, which lets you preheat from up to 98 ft away. The app is the most convenient for starting it from inside the house or the front of the RV.

Is 8 KW too much for a small van?

For a small, well-insulated van it is more heat than you need, and running it low for long stretches is where these heaters tend to carbon up. It suits larger RVs, truck cabs, workshops or uninsulated spaces better.

What do I need to install it?

Plan for an exhaust and intake route through a wall or floor, a fuel supply from a tank or the vehicle's diesel line, and 12 V power. The manual covers the setup, but the kit contents should be checked before you start.

Can it run on the vehicle's diesel tank?

It is a diesel air heater, so it can draw from a dedicated tank or be tapped into a diesel fuel line with the right fittings. Keep the fuel supply clean, since clogged or gelled fuel is a common cause of no-start and smoking.

Is it quiet enough to sleep next to?

The maker calls it low-noise, and the loudest part is usually the fuel pump ticking rather than the air flow. Mounting the pump on a rubber isolator helps more than anything else.

Kffkff 8KW All-in-One Portable Diesel Air Heater with Remote Control and LCD

Best price now

$89.99at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

Kffkff 8KW All-in-One Portable Diesel Air Heater with Remote Control and LCD

Best price now

$89.99at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $89.99 at Walmart on Nov 12.

Our take on the Kffkff 8KW All-in-One Portable Diesel Air Heater with Remote Control and LCD

The Kffkff 8KW is an all-in-one diesel air heater with an LCD, a 32 ft remote and Bluetooth app control from up to 98 ft. It is built for RVs, trucks, cars and workshops, and its automatic altitude compensation keeps the fuel mix stable up to about 18,045 ft. That altitude feature and the app control put it ahead of basic knob-and-LCD heaters, which usually lack both. Owners of Chinese diesel heaters in this class commonly report strong heat output but also carbon buildup and controller quirks when the unit runs rich or at low settings for long periods.

Best forRV and van owners heating a cabin overnightTruckers and campers in cold, high-altitude countryWorkshop and garage heating away from mains powerBuyers who want app and remote control without a premium brand

Pros

8 KW output heats a small cabin or cab quickly
Automatic altitude compensation works up to about 18,045 ft
Bluetooth app preheat from up to 98 ft, plus a 32 ft remote and LCD
All-in-one package with the manual for a straightforward install
Low-noise running compared with older diesel heaters

Cons

No mention of a fuel tank, pump or ducting kit in the box
8 KW is more than small, well-insulated spaces need
Diesel heaters in this class can soot up at low settings
Install still needs exhaust routing and a fuel tap
No stated warranty or service network