A 20 pound propane tank will run for 4 to 6 hours at a 50% load and around 3 hours or less at full load.
Free Gift Card Details
- The promo code 290259 must be entered on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 04/01/27.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
GENMAX Dual Fuel Generator, 10,000W, 120 Volts, Model# GM12000ED

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
This item is temporarily not available.
- Operate our GENMAX Dual-Fuel generator right out of the box on gasoline orpropane, and easily switch fuels with our patent pending fuel select dial thatallows for safe switching between fuel sources.
- Using gasoline, the 458cc engine produces 10000 starting watts and 9000running watts,and will run for 14.5 hours at 50% load when the 10.6 gallonfuel tank is full.
- The covered outlets in this generator include a 120/240V 30A locking outlet(L14-30R)?a 120/240V 50 A locking outlet (L14-50R), a 120V 30A outlet,four 120v 20A GFCl protected household outlets (5-20R) all with AC breakersand with a dual USB adapter.
- CO shutdown sensor helps protect both you and your family by automaticallyturning off the generator if dangerous levels of carbon monoxide are detected.The foldaway handle and never-flat tires make transport and storage a cinch.
- Electric start enjoy on/off push-button power with electric start, battery included,plus Cold Start Technology ensures a quick start in cold weather.
Prop 65 Warning: See Details
See full description
Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) GM12000ED Portable Dual Fuel Generator includes Spark Plug Socket Wrench (1) Dual-Purpose Screwdriver (1) User Manual (1) Warranty Information (1) Funnel (1) LPG Hose (1)
Downloads
Features + Benefits
- Operate our GENMAX Dual-Fuel generator right out of the box on gasoline orpropane, and easily switch fuels with our patent pending fuel select dial thatallows for safe switching between fuel sources.
- Using gasoline, the 458cc engine produces 10000 starting watts and 9000running watts,and will run for 14.5 hours at 50% load when the 10.6 gallonfuel tank is full.
- The covered outlets in this generator include a 120/240V 30A locking outlet(L14-30R)?a 120/240V 50 A locking outlet (L14-50R), a 120V 30A outlet,four 120v 20A GFCl protected household outlets (5-20R) all with AC breakersand with a dual USB adapter.
- CO shutdown sensor helps protect both you and your family by automaticallyturning off the generator if dangerous levels of carbon monoxide are detected.The foldaway handle and never-flat tires make transport and storage a cinch.
- Electric start enjoy on/off push-button power with electric start, battery included,plus Cold Start Technology ensures a quick start in cold weather.
- Runnings Watts: 9000W (Gas)/8000W(Propane)
- Starting Watts: 10000W(GAS)/90000W(Propane)
- Rated Voltage: 120/240V
- Rated Frequency: 60Hz
- Rated Current: Starting: 41.7A(Gas)/37.5A(Propane); Running : 37.5A(Gas)/33.3A(Propane)
- Engine Displacement: 458cc
- Engine Type: 4-stroke
- Engine RPM: Variable
- Recommended Oil: 10W-30
- Fuel Tank: 10.6 gallon
- Outlets: 1pcs American four-hole large in-line plug 250V/50A?GFCI Outlets: Yes; Covered Outlets: Yes; Covered Circuit Breakers: No 1pcs American four-hole anti-drop socket 125V250V/30A; 1pcs American three-hole anti-drop socket 125V/30A; 2set GFCI socket 125V/20A
- DC Operation: USB 5V/1.0A 2.1A
- Low Oil Shut-off: Yes
- Starting Method: Recoil Start/Electric Start
- PGMA G300-2018 Complaint: Yes; EPA Certified: Yes; CARB Complaint: No
Key Specs
| Attribute | Specification |
|---|---|
item# | 6048953 |
Brand | GENMAX |
Manufacturer's Warranty | 1 year limited warranty |
Ship Weight | 231.5 LB |
Fuel Type | Dual Fuel - Natural Gas and Propane |
Voltage | 120 |
| Attribute | Specification |
|---|---|
Engine Displacement | 458 cc |
Engine Brand | DINKING |
Start Type | Electric and Recoil |
Battery Required | No |
Product Weight | 218.3000 lb |
Dimensions L x W x H (in.) | 27.9 x 21.1 x 24.6 in |
Reviews
Questions & Answers
Questions
-
· 10 months ago
How long does it run on a 20 pound tank of propane??
1 answer-
ProductExpert30· 10 months ago
Helpful?
-
-
· 10 months ago
Is 50 amp plug same as on campers
1 answer-
ProductExpert29· 10 months ago
This unit is compatible with 50‑amp RVs using a four‑prong NEMA 14‑50 plug and accepts a 50A (14‑50R) connection.
Helpful?
-
-
· a year ago
does it have a warranty
1 answer-
ProductExpert11· a year ago
The generator has a 12 month limited consumer warranty or a three month limited commercial warranty.
Helpful?
-
-
· a year ago
How many amps is this generator
1 answer-
ProductExpert6· a year ago
The generator is rated at 37.5 amps for gasoline and 33.3 amps for propane.
Helpful?
-
-
· a year ago
It says it has two 120 240 volt outlets so is it at 120 volt generator or a 120 240 volt generator
1 answer-
ProductExpert6· a year ago
The generator would have one 120/240 volt-30 amp outlet, one 120/240 volt outlet-50 amp, one 120 volt-3 amp outlet and four 120 volt -2 amp outlets.
Helpful?
-
-
· a year ago
Will this generator work for a food truck
1 answer-
ProductExpert6· a year ago
This generator produces a noise level up to 77 decibels (dB). It can support up to 8,000 continuous watts when connected to propane. Please check the requirements of the food truck and the regulations of where it will be parked to determine if this generator would be the best fit.
Helpful?
-
-
· a year ago
Does this really have ten point six gallons capacity, as is stated? It doesn't look like it'll hold more than five and a half gallons.
1 answer-
ProductExpert29· a year ago
Model GM12000ED has a fuel tank capacity of 10.6 gal (40 L).
Helpful?
-
-
· a year ago
What are the starting and running watts when fueled by propane?
1 answer-
ProductExpert30· a year ago
When running on propane, this generator runs at 9,000 starting watts and 8,000 running watts.
Helpful?
-
-
· 2 years ago
Will it run on natural gas
1 answer-
ProductExpert6· 2 years ago
The generator can be run on propane or gasoline. It cannot be run on natural gas.
Helpful?
-
-
· 2 years ago
How loud is this generator
1 answer-
ProductExpert13· 2 years ago
This generator is rated at 77 decibels.
Helpful?
-
Warranty
Manufacturer's Warranty
1 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
Compare with Most Popular in Portable Generators
See All Portable Generators
See All GENMAX Portable Generators
Currently Viewing This Product
Item # 100549
$3299.00Shipping:
Free shipping (lower 48 states) - Available nowHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
Item # 100243
$2999.00Shipping:
Backordered: Order now to reserve yours -
Estimated to ship 04/02/27Heavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
Item # 100312
$2799.00Shipping:
Backordered: Order now to reserve yours -
Estimated to ship 12/14/26Heavy/large item. Lift gate service available.
Store Pickup:
Not Available
Specifications
Dual Fuel - Natural Gas and Propane
Gasoline
Gasoline
Gasoline
120
120/240
120/240
120/240
458 cc
389 cc
389 cc
389 cc
DINKING
Honda
Honda
Honda
Electric and Recoil
Electric and Recoil
Electric
Recoil
No
Yes
Yes
No
218.3000 lb
243.0000 lb
232.0000 lb
214.0000 lb
27.9 x 21.1 x 24.6 in
41.1 x 27.8 x 30.6 in
41.1 x 27.8 x 30.5 in
42.0 x 27.25 x 29.25 in
-
6,500
5,000
5,000
-
5,500
4,500
4,500
-
66 dB
66 dB
65 dB
-
6.2 Gal
6.2 Gal
6.2 Gal
-
10.4 hr
11.2 hr
11.2 hr
-
Yes
Yes
No
-
Yes
Yes
Yes
-
No
No
No



