Essential Generator Features: What to Look for When Buying

When investing in a new generator, it's essential to understand the key features that will determine its performance, reliability, and suitability for your needs. Whether you're purchasing a generator for business, industrial applications, or backup power, knowing what to look for ensures you get the best value for your investment. This guide breaks down the crucial aspects to consider when shopping for a generator.

Power Output & Load Capacity

The first and most critical factor when selecting a generator is its power output. You need a unit that can handle your required load without overloading or underperforming. Generators are typically rated in kilovolt-amperes (kVA), so it's important to choose one with sufficient prime and standby power ratings for your application.

Before making a decision, consider the following:

Calculate the total wattage of the equipment you need to power.
Factor in surge wattage for equipment with high start-up power demands.
Determine whether you need a single-phase or three-phase generator.
Ensure the generator has headroom to handle unexpected power spikes.

Fuel Type & Efficiency

The type of fuel a generator uses impacts its running costs, efficiency, and availability. Diesel generators are highly efficient, long-lasting, and well-suited for heavy-duty applications. Natural gas generators offer lower emissions and a continuous fuel supply but require access to gas infrastructure. Petrol generators, on the other hand, are useful for portable applications but less fuel-efficient for large-scale power needs. Some modern generators even combine diesel with battery storage for improved fuel efficiency.

When choosing a generator, consider:

The long-term affordability and availability of the fuel type.
The fuel consumption rate (litres per hour) at full and partial loads.
Whether dual-fuel or hybrid options provide better flexibility.

Engine & Performance

A generator’s engine determines its durability and efficiency, so selecting a high-quality brand is essential. Reliable manufacturers such as Cummins, Perkins, and Volvo Penta are known for producing robust and efficient engines.

Key performance factors to evaluate in diesel engines include:

Engine brand and reputation, as top manufacturers like Cummins and Perkins produce durable, high-efficiency diesel engines.
Liquid-cooled engines, which are more effective at managing heat in prolonged and heavy-duty operations.
Fuel efficiency, since diesel engines are known for their lower fuel consumption compared to petrol alternatives.
Maintenance requirements, including oil changes, fuel filter replacements, and the availability of spare parts to ensure long-term reliability.

Control Panel & Monitoring Features

Modern generators come equipped with advanced control panels that enhance ease of operation. Digital displays provide real-time performance metrics such as voltage, frequency, and fuel levels. Some generators even feature remote monitoring via Wi-Fi or GSM, allowing you to track performance from a mobile device.

Features to look for include:

Auto-start function for fast transition to backup power.
Load management capabilities to optimise power distribution.
Remote monitoring for improved oversight and maintenance alerts.

Noise Levels & Soundproofing

If the generator will be used in noise-sensitive environments, such as residential areas or hospitals, noise levels should be taken into account. Decibel ratings (dB) indicate how loud a generator is during operation, and excessive noise can be disruptive. To mitigate this, some generators come with built-in soundproofing features, such as insulated enclosures and advanced muffler systems. Proper placement and positioning can also help minimise noise levels, making it essential to plan the installation carefully, especially in residential or commercial settings where noise regulations may apply.

Portability & Installation Requirements

Depending on your application, you may need either a stationary or mobile generator. Fixed generators are permanently installed and ideal for large-scale operations, whereas portable units come with wheels and handles for ease of movement. Trailer-mounted generators are another option, particularly useful for temporary job sites or event power solutions.

Consider the following:

Does the generator need to be transported frequently?
Are there installation regulations or space constraints to consider?
Is sufficient ventilation available for cooling and safety?

Safety Features & Compliance

A generator must have built-in safety features to protect both the equipment and its users.

Essential safety features include:

Circuit breakers – Protect against overloads and short circuits.
Emergency stop button – Provides a quick shutdown option in case of malfunction.
IP rating – Indicates protection against dust and water ingress, crucial for outdoor applications.

Warranty & After-Sales Support

Since a generator is a long-term investment, manufacturer support is crucial. Look for models that come with at least a one-year warranty, although premium brands often offer extended coverage. Spare parts availability and responsive technical support can save you significant downtime and maintenance costs in the long run. Before finalising your purchase, consider the length and coverage of the warranty, the availability of spare parts and servicing support, and customer reviews on after-sales service and reliability. A well-supported generator ensures peace of mind and long-term operational efficiency.

Which Generator Should You Choose?

Choosing the right generator requires balancing power capacity, efficiency, durability, and features that suit your specific needs. At GFE Power Products, we offer high-performance new generators tailored for various applications. Whether you need a backup power solution or a primary power source, our team can help you find the perfect fit. Take a look at our New Diesel Generators today.

For expert advice and top-quality generators, get in touch today:
Phone: +44 (0)1386 335007
Email: sales@gfepowerproducts.com