Best 4000w Generator Deals - Top 10 in November 2025
Last Update: 02. November 2025
1
Best Choice
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
K&S Könner&Söhnen
- The inverter generator runs on both petrol and liquefied gas (propane-butane). The scope of delivery includes a gas hose with a reducer for connection to a gas cylinder according to DIN 477.
- The built-in electronic unit with microprocessor control monitors the operation of the inverter generator and provides a stable output voltage of 230V 50Hz sinusoidal form.
- Soundproof housingpetrol inverter generator provides minimal noise (71 dB Lpa 7 m), comfortable use and convenient transportation and is equipped with transport system for easy handling.
- The generator has the ECONOMY MODE function that reduces fuel consumption by up to 50% and allows using the generator at low loads by reducing engine speed.
- Parallel connection box from Könner & Söhnen KS PU1 enables to pair two inverter generators for double output power receiving.
- The portable generator camping is equipped with LED display, two USB ports 5 V/1 A, 5 V/2.1 A, typical 12 V car socket, ECONOMY MODE switch, operating status indicators, generator parallel connection output for double power receiving
- High-end synchronous alternator with 100% copper winding can withstand maximum loads without any damage to ensure long-term reliable operation of the silent inverter generator
- IMPORTANT: Do not overtighten the gas hose nut — the connection is designed to be secure with minimal tightening. Overtightening may damage the fitting or impair its performance
| Colour | Brand | Weight |
| Blue 4000ieg S | K&S Könner&Söhnen | 40 kg |
£84900
2
Best Value
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Hyundai
TODAY 9% OFF!
£849.99
(9% DISCOUNT!)
- Powerful 4.0kW Output: Delivers a continuous 3.5 kW and a maximum 4.0 kW of clean, stable power — ideal for home backup, camping, caravans, events, and small business use.
- Electric Start & Remote Keyfob: Start your generator effortlessly with a push of a button or the included wireless keyfob for instant power on demand — no manual pull required.
- Quiet, Enclosed Design: Low-noise operation (approx. ≤60 dB @ 7 m) thanks to the closed-case housing, perfect for residential areas, campsites, and outdoor events.
- Portable & Easy to Move: Integrated wheel kit and telescopic handle make transport simple, while the compact design ensures easy storage in garages, workshops, or motorhomes.
- Pure Sine Wave Power with ECO Mode: Provides safe, stable electricity for sensitive electronics such as laptops, TVs, and phones — ECO mode automatically adjusts engine speed for greater fuel efficiency and longer runtime.
| Colour | Brand | Weight |
| Blue | Hyundai | 47 kg |
£76999
RRP: £849.99
-9%
3
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Aceup Energy 3800 Watt Inverter Generator, Petrol Powered Generator Pure Sine Wave 223cc, EURO-V, CE
United Power Equipment Co.,Ltd
FREE delivery**
- 223cc 4-stroke OHV engine produces 3800 peak watts and 3500 rated watts with recoil start for up to 10 hours at quarter-load on 10 L, 50Hz
- Intelligent gauge keeps track of voltage ,run-time and hertz and track power output, plus feature low oil led and economic mode to save fuel
- Includes two 230V AC outlets, one 12V DC 8.3A outlet and two 5V USB ports; Parallel ready to connect 2 generators for twice the power (parallel kit sold separately)
- This portable generator for camping produces the clean power required by a variety of sensitive electronics such as phones, TV
- All generators are functionally tested in the factory to guarantee quality with CE EURO-V compliant; Backed by a 1 year limited warranty with lifetime technical guidance from experts
| Colour | Brand | Weight |
| Yellow and Black | Aceup Energy | 28 kg |
£37999
4
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
maXpeedingrods
TODAY 9% OFF!
£339.99
(9% DISCOUNT!)
FREE delivery**
- 【Multifunction Power Supplier】4-stroke petrol generator produces 3500W max watts and 3200W running watts. It is easily able to keep the lighting system or a small family house, power air conditioners and many other small appliances such as refrigerators,coffee machine at the same time.
- 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
- 【Multi-Function Display】Easy to monitor voltage and frequency power; display remaining fuel, which is suitable for timely fuel change; display cumulative runtime, which is suitable for later generator maintenance; display unique runtime, perfect timer function.
- 【Lightweight and Powerful Motor】Only 26 kg, small and compact, easy to carry, 223 cc OHV motor with two 230 V ports and a 12 V DC connector, provides plenty of power for multiple tasks.
- 【Brand Warranty】 Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
| Colour | Brand | Weight |
| Orange/Black | maXpeedingrods | 26 kg |
£30999
Was: £339.99
-9%
5
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
ParkerBrand.com
- 190cc 4-stroke Engine
- Recoil and Key Start 4.75 Kva / 4000w /50 Hz
- Outlets: 2 X 250V 16 AMP / 1 X 12V DC 8 AMP / 2 x USB Ports Parallel Sockets
- Automatic Vault Regulator /Low Db Rating : 97
- Perfect For Powering Digital Equipment
| Colour | Brand | Weight |
| - | ParkerBrand.com | - |
£54948
6
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
United Power Equipment Co.,Ltd
FREE delivery**
- 149cc 4-stroke OHV engine produces 3400 peak watts and 3200 rated watts with recoil start for up to 5 hours at half-load on 5L, 50Hz
- Intelligent gauge keeps track of voltage, run-time and hertz and track power output, plus feature low oil led and economic mode to save fuel
- Includes 230V two AC outlets, one 12V DC 8.3A car charger outlet and USB TypeA/C ; Parallel ready to connect 2 generators for twice the power (parallet kit sold separately)
- This portable pure sine wave generator produces the clean power required by a variety of sensitive electronics such as phones, TV; THD＜3%; Fully-enclosed design reduces noice level
- All generators are functionally tested in the factory to guarantee quality with CE, EURO-V compliant; Backed by a 1 year limited warranty with lifetime technical guidance from experts
| Colour | Brand | Weight |
| Yellow and Black | Aceup Energy | 23 kg |
£43599
7
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Aceup Energy
- 149cc 4-stroke OHV engine produces 4000 peak watts and 3200 rated watts with recoil start for up to 5 hours at half-load on 1.32 gallon
- Intelligent gauge keeps track of voltage ,run-time and hertz and track power output, plus feature low oil led and economic mode to save fuel
- Includes 120V AC one 20A outlets, one RV receptacle, one 12V DC 8.3A car charger outlet; Parallel ready to connect 2 generators for twice the power (parallet kit sold separately)
- Produce clean power required by sensitive electronics such as phones, TV; Fully-enclosed design reduces noice level
- 5-in-1 Knob:fuel on/shut-off,engine on/off,choke;When turning off the engine, the fuel switch is turned off at the same time
| Colour | Brand | Weight |
| Yellow and Black | Aceup Energy | 21.8 kg |
£59846
8
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
JCB
- Powerful, Reliable Output: Impressive max output of 3.6kW / 4.5kVA* thanks to its market leading 7.5hp JCB engine.
| Colour | Brand | Weight |
| Yellow | JCB | 50 kg |
£39999
9
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Champion Power Equipment
- The cover protects the generator from dirt and moisture – e.g. rain, etc.
- The cover is suitable for frame generators 2000-4000 watts from Champion
- The hood is made of high-quality material and is therefore particularly robust and durable
- Includes a protective cover for generators
| Colour | Brand | Weight |
| - | Champion Power Equipment | - |
£2699
10
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Mutaomay
- Equipped with a 208cc 4-stroke OHV engine, this gas generator offers 4000 peak watts and 3200 running watts. Great for RV camping, home backup, job sites, farms, or outdoor events - get reliable power anywhere you need it.
- Enjoy up to 14 hours of run time at 25% load, with a 2 gallon (7.5L) fuel tank with a fuel gauge, less refuels and longer run time. Activate ECO mode for optimal fuel efficiency, reducing emissions while extending uptime for your energy needs.
- Power multiple devices simultaneously, whether it's tools, appliances, or RV systems, you're always covered.
- Only 50 lbs with a compact design, this generator is easy to carry and store. Perfect for remote sites, tailgating, ranches and emergency use in areas without electricity, solve the problem of no power area
- Operates at ≤72dB from 25 feet away, about the same as a normal conversation. Quiet enough for camping and home use without disturbing your surroundings.
- [Design!] We provide professional assistance and dedicated customer support to ensure a smooth experience. If you have any questions, we are here to help!
| Colour | Brand | Weight |
| Grey | Mutaomay | 25.4 kg |
£66531
* the possibly used term "best" etc. refers only to our possibly subjective personal opinion.
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More information and FAQs about the featured 4000w Generator in this comparison:
Technical Details
| Colour | Blue 4000ieg S |
| Brand | K&S Könner&Söhnen |
| Weight | 40 kg |
Advantages
- Portable
- Dual fuel
- Electric start
- Silent operation
- Multiple plug sockets
FAQs about Könner & Söhnen KS 4000iEG S portable LPG / petrol inverter generator 4000W, UK Standard Plug & 230V 2 x 13 Amp Plug Sockets, 2 USB ports, electric start dual fuel generator, silent inverter generator
Does the generator have a dual fuel capability?
Yes, the Könner & Söhnen KS 4000iEG S generator can run on both LPG and petrol.
How much power does the generator produce?
The generator has a maximum power output of 4000W.
What type of plugs does the generator have?
The generator comes with a UK Standard Plug and two 230V 13 Amp Plug Sockets.
Is the generator easy to start?
Yes, the Könner & Söhnen KS 4000iEG S generator features an electric start for easy operation.
Is the generator quiet?
Yes, the Könner & Söhnen KS 4000iEG S generator is a silent inverter generator.
Technical Details
| Colour | Blue |
| Brand | Hyundai |
| Weight | 47 kg |
Advantages
- Portable
- Inverter technology
- 3 year warranty
- 4000W power
FAQs about Hyundai 4000W / 4.0kW Portable Petrol Inverter Generator – Electric Start & Remote Keyfob, Wheel Kit, Quiet Closed-Case Design with Pure Sine Wave Output for Home Backup, Camping & Caravans
Is the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator fuel efficient?
Yes, the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator is fuel efficient and designed to provide longer runtime with maximum fuel efficiency.
What is the noise level of the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator?
The generator operates at a noise level of approximately 60 decibels, which is relatively quiet for a generator of its size and power.
Does the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator have electric start?
Yes, the generator is equipped with electric start for easy and convenient starting.
Can the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator power sensitive electronics?
Yes, the generator features inverter technology that produces clean and stable power, making it safe to power sensitive electronics.
What is the warranty period for the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator?
The generator comes with a 3-year warranty, providing peace of mind and protection against any manufacturing defects.
Technical Details
| Colour | Yellow and Black |
| Brand | Aceup Energy |
| Weight | 28 kg |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
Technical Details
| Colour | Orange/Black |
| Brand | maXpeedingrods |
| Weight | 26 kg |
Advantages
- Portable
- Inverter
- Pure Sine Wave
- Versatile
FAQs about maXpeedingrods 3500W Portable Inverter Generator 4-Stroke Pure Sine Wave Petrol Generator for Camping, RV Travel, Home, or Jobsites
What is the maximum power output of the maXpeedingrods generator?
The maximum power output of the maXpeedingrods generator is 3500W, making it suitable for various applications such as camping, RV travel, home backup, or jobsites.
What type of generator is the maXpeedingrods portable inverter generator?
The maXpeedingrods generator is a 4-stroke pure sine wave petrol generator, which ensures stable and clean power output for sensitive electronic devices.
Is the maXpeedingrods generator suitable for camping?
Yes, the maXpeedingrods generator is suitable for camping as it provides portable power for various camping appliances and devices.
Does the maXpeedingrods generator have a compact design?
Yes, the maXpeedingrods generator features a portable and compact design that allows for easy transportation and storage during camping trips or other outdoor activities.
Can the maXpeedingrods generator be used for home backup?
Yes, the maXpeedingrods generator can be used for home backup to provide power during emergencies or power outages.
Technical Details
| Colour | - |
| Brand | ParkerBrand.com |
| Weight | - |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
Technical Details
| Colour | Yellow and Black |
| Brand | Aceup Energy |
| Weight | 23 kg |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
Technical Details
| Colour | Yellow and Black |
| Brand | Aceup Energy |
| Weight | 21.8 kg |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
Technical Details
| Colour | Yellow |
| Brand | JCB |
| Weight | 50 kg |
Advantages
- Powerful
- Heavy duty
- Versatile
- Professional use
- 3 year warranty
FAQs about JCB 3.6kW / 4.5kVA Petrol Site Generator 115V / 230V 7.5hp 224cc JCB Engine Recoil Start Engine Heavy Duty Professional Use Trade Worksite Builder Powerful Workshop 3 Year Warranty
What is the power output of this generator?
This generator has a power output of 3.6kW/4.5kVA.
What voltage does this generator support?
This generator supports both 115V and 230V.
What is the engine size of this generator?
This generator has a 7.5hp 224cc JCB engine.
How is this generator started?
This generator has a recoil start engine.
What is the warranty period for this generator?
This generator comes with a 3-year warranty.
Technical Details
| Colour | - |
| Brand | Champion Power Equipment |
| Weight | - |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
Technical Details
| Colour | Grey |
| Brand | Mutaomay |
| Weight | 25.4 kg |
Our editorial team is currently working on a detailed test of this product. Please check back in a few days.
General information you should know about 4000w Generator:
Are you in need of a reliable power source for your outdoor adventures or emergency backup? Look no further than the mighty 4000W generator. In this product comparison, we will explore the numerous benefits and features of a 4000W generator, aiming to help you make an informed decision and ultimately persuade you to purchase one of these powerful machines.
A 4000W generator is a versatile and efficient device that provides a stable power supply wherever you go. Whether you're camping in the wilderness or experiencing a power outage at home, this generator has got you covered. With a capacity of 4000 watts, it can power a wide range of appliances and tools, including refrigerators, air conditioners, power tools, and more. Its impressive power output makes it suitable for both residential and commercial use.
One of the key advantages of a 4000W generator is its portability. Most models come with wheels and a handle, allowing you to effortlessly transport it from one location to another. This is especially beneficial for camping trips or outdoor events where mobility is crucial. Despite its compact size, it packs a punch when it comes to power generation.
Furthermore, a 4000W generator typically features multiple outlets, enabling you to connect several devices simultaneously. This is particularly useful during emergencies or outdoor gatherings when you need to power multiple appliances or charge various devices at once. Additionally, some models offer USB ports for convenient charging of smartphones, tablets, or other electronic gadgets.
Safety is always a top priority, and 4000W generators are designed with this in mind. Most models incorporate advanced safety features such as automatic voltage regulation, low-oil shutdown, and overload protection. These features not only prevent damage to the generator but also safeguard your connected devices from potential electrical hazards.
In conclusion, a 4000W generator is a reliable and powerful companion for your outdoor adventures or emergency backup needs. Its versatility, portability, and safety features make it an excellent investment for both residential and commercial use. So why wait any longer? Make the wise choice and purchase a 4000W generator today to ensure a stable power supply wherever you go. Power up and enjoy peace of mind with this essential device.
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