Best 4000w Generator Deals - Top 10 in November 2025
Last Update: 20. 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.
maXpeedingrods
TODAY 6% OFF!
£849.99
(6% DISCOUNT!)
FREE delivery**
- 【Multifunction Power Supplier】 4 stroke 345cc inverter generator produces 5500W max watts and 5000W running watts. It is easily able to run a huge range of high-power appliances such as 2000W pressure washer, 3000W power tools, an air conditioner with 6000 BTU cooling capacity, refrigerators, kettles, and even more appliances. Or as backup for power outages.
- 【Low noise】When the generator is in ECO mode at 25% load and is 7m away from the generator, the noise level is 62 decibels. which is almost the quietest generator of this rated power. At this noise level, there is little disturbance for users and people nearby. Please note that ambient noise may affect the overall value of the noise of the machine.
- 【Extra Long Runtime】13.5L Large fuel tank capacity, runs 9 hours at 50% load (2500w load). In ECO mode, the runtime can be extended up to 13 hours.
- 【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.
- [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 | maXpeedingrods | 52 kg |
£79999
Was: £849.99
-6%
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.
maXpeedingrods
TODAY 24% OFF!
£288.99
(24% 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 |
£22000
Was: £288.99
-24%
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.
Hyundai
TODAY 9% OFF!
£849.99
(9% DISCOUNT!)
FREE delivery**
- 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%
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.
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
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.
JCB
TODAY 15% OFF!
£399.99
(15% DISCOUNT!)
- 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 |
£34000
RRP: £399.99
-15%
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.
Hyundai
TODAY 13% OFF!
£769.99
(13% DISCOUNT!)
FREE delivery**
- Powerful & Reliable Performance: Equipped with a 225cc 4-stroke IC225D engine, this portable petrol inverter generator delivers a maximum output of 3800W and a continuous output of 3500W, making it perfect for powering appliances, tools, and sensitive electronics.
- Quiet & Efficient Operation: With low-noise technology producing just 58 dBA at 7m and an ECO mode to optimize fuel efficiency, enjoy cost-effective and undisturbed power for holidays, events, or emergency use.
- Versatile Power Options: Features two 230V UK mains sockets, a 12V 5A outlet, and a USB port to charge and power multiple devices simultaneously, from kettles and fridges to laptops and TVs.
- Portable & Easy to Transport: Compact design weighing only 48kg, equipped with a folding handle, rear moulded grip, and durable wheels for effortless movement and storage in your car, van, or garage.
- Safe for Sensitive Electronics: Pure sine wave output ensures the safe operation of TVs, laptops, and other sensitive devices without the risk of damage or overload.
- User-Friendly LCD Display: Monitor performance at a glance with the integrated LCD screen displaying voltage, frequency, and hour count for better control and maintenance planning.
- Durable & Safe: Includes digital overload protection and low-oil shutdown to safeguard both the generator and connected devices. Built with a robust inverter board for handling high inductive loads.
- Eco-Friendly & Cost-Saving: The 'ECO' mode automatically adjusts engine speed to match load demand, reducing fuel consumption, noise, and wear for long-lasting performance.
- Ideal for Leisure & Emergency Use: Perfect for powering caravans, motorhomes, horseboxes, outdoor lighting, and sound systems. Provides dependable backup power for appliances like fridge-freezers during outages.
- Peace of Mind with Warranty: Backed by a 2-year warranty from P1, ensuring reliability and customer satisfaction.
| Colour | Brand | Weight |
| Blue | Hyundai | 48 kg |
£66668
Was: £769.99
-13%
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.
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 | - |
£56735
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.
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 |
£70900
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.
AIVOLT
TODAY 19% OFF!
£489.99
(19% DISCOUNT!)
FREE delivery**
- True Sine Wave Power - This inverter generator has a powerful 149cc 4 stroke OHV air-cooled 100% copper winding engine which can produce 3300W maximum watts and 3000W continuous watts steady clean power (less than 3% THD) with very low fuel consumption. Ideal for sensitive electronics such as phones, laptops.
- Eco Mode & Long Runtime - A fully fueled 4.2L tank will provide you consistent power for up to 8 hours making the generator extremely economical. It runs 4.5 hours at 50% load（1500W）, 3 hours at 75% load（2250W）, 2.5 hours at 100% load. In Eco-mode, it even runs more time and prolongs generator‘s life. Perfect for camping, RV travel, caravan, motorhome and jobsites.
- Multifunction Control Panel with 5-in-1 LCD Multi-Meter - The outstanding design features bright orange appearance and multifunctional panel including parallel connectability, 2 standard 230v 3 pin sockets, 2 USB charging ports(type-A & type-C), a 12v DC charging outlet, a digital display meter. Suitable for caravans, lighting systems, car refrigerator and many large outdoor appliances.
- Ultra Lightweight & Low Noise - Weighs only 23kg, the labor-saving and ergonomic handle is very easy to lift. When the generator is at 25% load, it comes with 61 decibels noise at 23 feet that is comparable to the sound of a normal conversation.
- The package contains: 1*3300W petrol generator, 1*spark plug wrench, 1*oil funnel, 1*12V DC battery charging cable, 1* screw driver, 1* quick start guide, 1*manual.
| Colour | Brand | Weight |
| Orange | AIVOLT | 23 kg |
£39899
RRP: £489.99
-19%
* the possibly used term "best" etc. refers only to our possibly subjective personal opinion.
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1. The prices shown may have risen since the time we last updated them.
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More information and FAQs about the featured 4000w Generator in this comparison:
Technical Details
| Colour | Orange |
| Brand | maXpeedingrods |
| Weight | 52 kg |
Advantages
- Portable
- Silent
- Pure Sine Wave
- Suitable for Camping
FAQs about maXpeedingrods 5500W Portable Inverter Generator Petrol Silent Pure Sine Wave Generator for Camping, RV Travel, Home, or Jobsites
Wie viel Leistung hat der Generator?
Der maXpeedingrods 5500W Portable Inverter Generator hat eine Leistung von 5500 Watt.
Wie laut ist der Generator?
Der Generator bietet eine geräuscharme Betrieb mit einer Lautstärke von weniger als 60 dB.
Ist der Generator tragbar?
Ja, der Generator ist tragbar und kann problemlos für Camping, RV-Reisen, Zuhause oder auf Baustellen verwendet werden.
Ist der Generator für den Betrieb von empfindlichen elektronischen Geräten geeignet?
Ja, der Generator erzeugt eine reine Sinuswelle und ist ideal für den Betrieb von empfindlichen elektronischen Geräten geeignet.
Hat der Generator eine Einheit zum Erzeugen von Wechselstrom?
Ja, der Generator erzeugt Wechselstrom (AC) mit einer reinen Sinuswelle für eine qualitativ hochwertige Stromversorgung.
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 | 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 | 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 | 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 | Blue |
| Brand | Hyundai |
| Weight | 48 kg |
Advantages
- Portable
- Powerful
- Hyundai engine
- Silent
FAQs about P1 3800W 3.8kW Portable Petrol Inverter Generator, Quiet, Compact & Lightweight, Ideal for Caravans, Motorhomes, Outdoor Events & Emergency Backup Power
What is the fuel tank capacity of the P1 Portable Petrol Inverter Generator?
The fuel tank capacity of the P1 Portable Petrol Inverter Generator is not specified in the product description.
Does the P1 Portable Petrol Inverter Generator come with wheels for easy transportation?
No, the P1 Portable Petrol Inverter Generator does not come with wheels.
What is the noise level of the P1 Portable Petrol Inverter Generator?
The P1 Portable Petrol Inverter Generator is advertised as 'silent' but the specific noise level is not provided in the product description.
Is the P1 Portable Petrol Inverter Generator suitable for outdoor use?
Yes, the P1 Portable Petrol Inverter Generator is designed for outdoor use and is portable.
What type of warranty is offered with the P1 Portable Petrol Inverter Generator?
The P1 Portable Petrol Inverter Generator comes with a 2-year warranty.
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 | 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 | Orange |
| Brand | AIVOLT |
| Weight | 23 kg |
Advantages
- Portable
- Ultra quiet
- Pure sine wave
- Suitable for camping and jobsites
FAQs about AIVOLT 3300W Petrol Inverter Generator 4 Stroke Portable Generator for Camping, Jobsites - Pure Sine Wave, Ultra Quiet-149cc Engine, 4.2L Fuel Tank
What is the maximum power output of the AIVOLT 3300W Petrol Inverter Generator?
The AIVOLT 3300W Petrol Inverter Generator has a maximum power output of 3300W.
Is the generator suitable for camping?
Yes, the AIVOLT 3300W Petrol Inverter Generator is portable and designed for camping purposes.
Does the generator produce pure sine wave power?
Yes, the AIVOLT 3300W Petrol Inverter Generator produces pure sine wave power, making it suitable for sensitive electronic devices.
What is the fuel tank capacity of the generator?
The AIVOLT 3300W Petrol Inverter Generator has a fuel tank capacity of 4.2 liters.
Is the generator engine noisy?
No, the AIVOLT 3300W Petrol Inverter Generator is ultra-quiet during operation.
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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