We Buy Your Generator
- Finance Available, on all new generators.
Buying a generator is an important investment, whether you’re a homeowner preparing for power outages, a business protecting critical operations, or a contractor needing reliable on-site power. With so many options on the market, it can be overwhelming to know where to begin. At Bellwood Rewinds, we’ve spent decades helping customers across the UK choose the right generator for their needs, and we know from experience that making the right choice comes down to understanding a few key factors.
There’s no such thing as a one-size-fits-all solution when it comes to generators. The right generator for your home may be entirely unsuitable for a commercial site or industrial facility. Choosing based on price alone can lead to costly mistakes down the line, including underperformance, poor fuel efficiency, and maintenance headaches. In this blog, we’ll walk you through everything you should consider when buying a generator, from power requirements and fuel type to brand reputation and after-sales support.
The first and most important step when buying a generator is knowing exactly how much power you need. This isn’t just about guessing or adding up a few appliances. It involves understanding your total power demand in kilowatts (kW) or kilovolt-amperes (kVA), as well as the type of loads your generator will be running.
Different equipment draws different amounts of power, and some items—such as motors, compressors, and pumps—can require more power on startup than during regular operation. If you fail to account for these starting loads, you could end up with a generator that trips out or fails to start essential systems. That’s why at Bellwood Rewinds, we often begin with a detailed power audit to ensure your chosen generator matches your requirements not just today, but in the future as well.
You also need to consider whether you require single-phase or three-phase power. Most homes in the UK use single-phase, while commercial and industrial applications often demand three-phase supply to handle higher loads. Choosing the correct phase is essential for compatibility with your existing infrastructure.
Once you know how much power you need, the next consideration is the fuel type. In the UK, the most common generator fuels are diesel, petrol, gas, and in some cases, hybrid or renewable-assisted options. Each has its pros and cons depending on your application.
Diesel generators are the most popular choice for both standby and prime power due to their fuel efficiency, durability, and reliability. They are well-suited to heavy-duty applications and have a longer lifespan than petrol models when maintained correctly. Petrol generators, on the other hand, tend to be more compact and affordable, making them a common choice for light-duty or temporary use, such as outdoor events or DIY projects.
Gas-powered generators, including those using LPG or natural gas, are gaining popularity for their cleaner emissions and quieter operation, especially in residential areas. However, they often require a fixed gas supply, which may not be suitable for mobile use. At Bellwood Rewinds, we assess each customer’s environment and needs before recommending the most appropriate fuel type for their generator.
Another key decision is whether you need a portable or stationary generator. Portable generators are designed to be moved from one location to another and are typically used in construction, agriculture, or for temporary backup at home. These models are usually compact and easy to operate, but they’re not always suitable for running high-demand systems or continuous usage.
Stationary generators, by contrast, are designed to remain in one place and are often hardwired into your building’s electrical system. These units are ideal for businesses or large properties requiring automatic standby power. Many come with automatic transfer switches that turn the generator on within seconds of a power failure. If continuous uptime is critical, a stationary generator will offer the reliability and power capacity you need.
At Bellwood Rewinds, we supply both portable and fixed generators and can advise you on which type best suits your space, usage, and installation requirements.
One of the most common questions we receive is whether it’s better to buy a new or used generator. The answer depends on your budget, usage plans, and the level of support you expect.
New generators offer the latest technology, full manufacturer warranties, and a clean operational history. They’re ideal for those who want peace of mind and long-term reliability, especially in mission-critical applications like healthcare, data centres, or industrial production. That said, new generators come at a higher upfront cost.
Used generators can offer excellent value for money if sourced from a trusted supplier. At Bellwood Rewinds, every used generator we sell undergoes thorough testing and servicing before it leaves our workshop. We check engine hours, replace worn parts, and ensure the unit performs as expected under load. A quality used generator can provide many years of service at a fraction of the price of a new unit. It’s a popular choice for businesses managing tight budgets without compromising on performance.
Noise is a significant factor, particularly for residential users or businesses located in built-up areas. Older generators and budget models can be loud enough to disturb neighbours or breach noise regulations. If noise is a concern, look for generators that feature soundproofed or silenced enclosures. Many modern diesel generators come with acoustic housings that significantly reduce operational noise.
Environmental regulations are another consideration. In the UK, all non-road mobile machinery, including generators, must comply with emission standards. Generators used on construction sites, for instance, may need to meet Stage V compliance to reduce nitrogen oxides and particulate matter. At Bellwood Rewinds, we help customers navigate these regulations and choose units that are both compliant and environmentally responsible.
For more sustainable operations, you may also want to explore generators that can integrate with solar or battery storage systems. These hybrid setups can reduce diesel consumption and lower emissions, especially in off-grid or semi-permanent setups.
The brand of generator you choose can make a big difference in terms of performance, reliability, and after-sales support. Well-known brands such as JCB, Pramac, Stephill, and MOSA have established reputations for durability and efficiency. Their generators are often built to a higher standard, with better components, longer service intervals, and more readily available spare parts.
Unknown or unbranded generators may be cheaper initially but can cost you more in the long run if parts are difficult to source or reliability is inconsistent. At Bellwood Rewinds, we only supply generators from trusted manufacturers that we know will stand up to real-world conditions. Our years of servicing experience have shown us which brands last and which don’t, and we’re always honest with our recommendations.
Buying a quality generator from a reputable brand also means access to better technical support, warranty cover, and easier integration with accessories like ATS systems, remote monitoring, or load banks.
Generators, like any mechanical equipment, require regular servicing to remain in good working condition. Before buying, consider who will be responsible for maintenance and how easy it is to access service and spare parts.
At Bellwood Rewinds, we offer full after-sales support, including servicing, diagnostics, and emergency repairs. We stock common parts, filters, and fluids for the brands we sell, which means quicker turnaround times and less downtime for your generator. When customers purchase from us, they also benefit from tailored servicing plans that match their usage—whether that’s occasional standby or daily prime power.
We also educate our customers on proper generator care, helping them to identify early signs of wear or performance loss. Whether it’s a new or used unit, having a trusted team to maintain and support your generator is as important as the purchase itself.
Many buyers focus solely on the purchase price, but the true cost of owning a generator includes fuel, maintenance, and repairs over its lifespan. Fuel efficiency is especially important for generators used for long periods or in prime power roles.
Modern diesel generators are designed to deliver more power with less fuel, especially when operating at around 70 to 80 percent of their rated load. Fuel consumption is typically measured in litres per hour, and even small differences in efficiency can result in major cost savings over time. We help our customers calculate expected fuel usage and compare models to find the best balance between performance and running costs.
Don’t forget to factor in the cost of spare parts, servicing intervals, and oil changes. A cheaper generator might become more expensive over five years if it burns more fuel or needs more frequent maintenance. At Bellwood Rewinds, we make sure you understand the full picture before making your choice.
If your generator is intended for backup power, you may want it to start automatically when the mains power fails. For this, you’ll need an automatic transfer switch (ATS). This device detects when the main supply is lost and switches your load over to generator power within seconds, then switches back once the mains returns.
Not all generators are compatible with ATS systems, especially older or more basic models. If you want seamless power continuity—for example, in a healthcare facility, server room, or retail environment—then ATS compatibility is a must. At Bellwood Rewinds, we offer ATS solutions and help configure your generator system for smooth, automatic operation.
We also install and test ATS setups as part of our complete service package, ensuring your generator responds exactly when you need it to. For customers who want peace of mind and hands-off operation, this is one of the most valuable features to consider.
Where you plan to install your generator is another major consideration. You’ll need enough space not only for the unit itself but also for ventilation, access for maintenance, and in some cases, noise attenuation. Outdoor generators must be weatherproof or housed in a suitable enclosure, and indoor installations must meet strict ventilation and exhaust requirements.
We often visit customer sites to assess the space available and recommend the most appropriate setup. A compact generator might fit better in a domestic garage or farm outbuilding, while larger commercial units need space for cables, fuel storage, and air circulation. Noise, access, and security should also be considered during the planning stage.
At Bellwood Rewinds, we provide site surveys, installation guidance, and full commissioning support to make sure your generator fits your space, complies with regulations, and functions flawlessly from day one.
Purchasing a generator is a big decision, and there’s much more to consider than just the sticker price. You need to think about your power requirements, fuel type, load demands, efficiency, servicing, and future scalability. Buying the wrong generator can lead to higher running costs, poor performance, or even safety risks.
At Bellwood Rewinds, we take the time to understand your unique needs and provide honest, expert advice based on decades of hands-on experience. Whether you’re buying a small backup unit for your home or a full-scale commercial generator for your business, we’re here to help you make the right choice.
We stock a wide selection of new and used generators from top brands, and we back every sale with servicing, support, and technical expertise. If you’re unsure about which generator is right for you, get in touch with our team today. We’ll guide you through the process and ensure you end up with a reliable, cost-effective solution that meets your needs now and into the future.