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Gewna 8KW All-in-One Diesel Air Heater vs Jacgood 5KW Diesel Air Heater All in One

The Gewna is the more flexible unit: 8 kW of output, support for 12V, 24V, 110V and 240V, and a 7 L tank that runs about 16 hours per fill. The Jacgood is a simpler 12V, 5 kW all-in-one in a compact metal case, and it carries a 4.7 out of 5 rating from 109 owners. Buy the Gewna for a large RV, van or workshop that needs fast heat and long overnight runs; buy the Jacgood for a truck cab, boat or small trailer where 12V is the only supply and space is tight.

  • Choose the Gewna if you need 8 kW, multi-voltage power, and a big tank for long, cold nights.
  • Choose the Jacgood if you have a 12V system, a small space, and want a proven, highly rated compact unit.

Prices

  • Gewna 8KW All-in-One Diesel Air Heater: $93.59 at Amazon (last seen Nov 9)
  • Jacgood 5KW Diesel Air Heater All in One: $89.99 at Walmart (checked today)
  • Difference: the Jacgood 5KW Diesel Air Heater All in One is $3.60 cheaper than the Gewna 8KW All-in-One Diesel Air Heater at the latest prices (Nov 9 and Nov 10)
GEWNA
Gewna 8KW All-in-One Diesel Air Heater with Multi-Voltage Support (12V/24V/110V/240V) & LCD Remote - Fast 7L Parking Heater for RV, Home, and Car

Gewna 8KW All-in-One Diesel Air Heater

Gewna 8KW All-in-One Diesel Air Heater with Multi-Voltage Support (12V/24V/110V/240V) & LCD Remote - Fast 7L Parking Heater for RV, Home, and Car

4.4(5 ratings)
$93.59at AmazonChecked Nov 9
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • 8 kW heats a large space fast
  • Runs on 12V, 24V, 110V or 240V
  • 7 L tank gives about 16 hours per fill
  • LCD panel and remote control
  • Quiet running, under 45 dB stated
Cons
  • No owner rating shown
  • Larger output may be more than a small cab needs
  • Must be exhausted outdoors
Jacgood
Jacgood 5KW Diesel Air Heater All in One, Fast Heating, for RV Truck, Boat, Bus, Car Trailer, Motorhomes, Caravans

Jacgood 5KW Diesel Air Heater All in One

Jacgood 5KW Diesel Air Heater All in One, Fast Heating, for RV Truck, Boat, Bus, Car Trailer, Motorhomes, Caravans

4.7(109 ratings)
$89.99at WalmartChecked 7 h ago
See all prices and details
Visit Walmart
Pros
  • Compact metal case fits narrow spaces
  • Rated 4.7 out of 5 by 109 owners
  • Low fuel use, 0.1 to 0.24 L/h
  • Automatic temperature control with pre-set
  • Rated for -40°C to 80°C
Cons
  • 12V only
  • 5 kW is less output than the Gewna
  • Tank size not stated

What separates them

Gewna 8KW All-in-One Diesel Air HeaterJacgood 5KW Diesel Air Heater All in One
Heat output8 kW5 kW
Voltage12V, 24V, 110V and 240V12V only
Tank size7 L, about 16 hours per fillNot stated; fuel use 0.1 to 0.24 L/h
FormAll-in-one, white caseAll-in-one, black metal case, 15.3x39x41.5 cm
ControlsLCD panel plus remoteTemperature pre-set with automatic control
NoiseStated under 45 dBNoise-reduced, no figure given
Owner feedbackNo rating shown4.7 out of 5 from 109 ratings
Working temperatureNot stated-40°C to 80°C

Price history

$159.99$93.59
Nov 9Nov 10
  • Gewna 8KW All-in-One Diesel Air Heater: lowest $93.59 on Nov 9 at Amazon; $159.99 on Nov 10.
  • Jacgood 5KW Diesel Air Heater All in One: lowest $110.99 on Nov 10 at Amazon.

Prices at every store

Gewna 8KW All-in-One Diesel Air Heater

  • WalmartNew

    In stockSold by GEWNAReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $159.99Free shippingChecked 5 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $93.59Free shippingChecked Nov 9
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart
All 2 stores and price history →

Jacgood 5KW Diesel Air Heater All in One

  • WalmartNew

    In stockSold by JacgoodReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $89.99Free shippingChecked 7 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $110.99Free shippingChecked 7 h ago
    Visit Amazon
All 2 stores and price history →

Specs compared

SpecGewna 8KW All-in-One Diesel Air HeaterJacgood 5KW Diesel Air Heater All in One
size7 L15.3x39x41.5cm (6x15.4x16.3")
actual_colorWhiteBlack
colorWhiteBlack

What reviewers say

Jacgood 5KW Diesel Air Heater All in One

  • 4.7 / 5109 ratings

Owners rate it highly overall, with most praise going to fast heat output and the compact all-in-one layout. Complaints center on pump ticking, controller quirks and the care needed to install the exhaust safely.

What people mention
  • Heat outputPraisedOwners say it warms a van or truck cab quickly even in freezing weather.
  • SizePraisedThe all-in-one box fits into tight spaces and is easy to relocate.
  • Pump noiseCriticisedThe fuel pump ticking is audible inside a quiet cabin, especially at night.
  • SetupMixedInstallation is straightforward for some, but the controller and manual confuse others.

Questions and answers

Which is better for a large RV or van?
The Gewna. Its 8 kW output and 7 L tank heat a bigger space and run longer between fills than the 5 kW Jacgood.
Which is better for a truck cab or small boat?
The Jacgood. Its compact 15.3x39x41.5 cm case fits tight spaces, and 5 kW is plenty for a cab or small cabin.
Do I need 24V or mains power?
Only the Gewna supports 24V, 110V and 240V. The Jacgood runs on 12V only, so check your system before choosing.
Which lasts longer on one fill?
The Gewna, at about 16 hours on its 7 L tank. Jacgood does not state a tank size, only fuel use of 0.1 to 0.24 L per hour.
Is the Jacgood worth stepping up to over the Gewna?
Only if you want a smaller, proven 12V unit with a strong owner rating. For output and voltage flexibility, the Gewna is the step up.
Are these safe to run overnight?
Both burn diesel and must be exhausted outdoors to avoid CO poisoning. The Gewna's long run time suits overnight use when vented correctly.

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More comparisons

  • Gewna 8KW All-in-One Diesel Air Heater with Multi-Voltage Support (12V/24V/110V/240V) & LCD Remote - Fast 7L Parking Heater for RV, Home, and Car vs VEVOR Diesel Heater, 8KW, DC 12V/24V, Portable Diesel Air Heater with Remote Control and LCD Screen, Fast Heating Low Noise, 2.6 Gal Large Fuel Tank for Vehicles, Vans, RVs, Campers, and Trucks
  • Jacgood 5KW Diesel Air Heater All in One, Fast Heating, for RV Truck, Boat, Bus, Car Trailer, Motorhomes, Caravans vs VEVOR Diesel Heater, 8KW, DC 12V/24V, Portable Diesel Air Heater with Remote Control and LCD Screen, Fast Heating Low Noise, 2.6 Gal Large Fuel Tank for Vehicles, Vans, RVs, Campers, and Trucks
  • Gewna 8KW All-in-One Diesel Air Heater with Multi-Voltage Support (12V/24V/110V/240V) & LCD Remote - Fast 7L Parking Heater for RV, Home, and Car vs LF Bros 5KW Multi-Voltage
  • Jacgood 5KW Diesel Air Heater All in One, Fast Heating, for RV Truck, Boat, Bus, Car Trailer, Motorhomes, Caravans vs LF Bros 5KW Multi-Voltage

Buying guides that pick them

  • Best portable diesel air heaters for vans and RVs