Generator Servicing & Maintenance in Sutton & South London

When the power goes out, your backup generator is what stands between business as usual and a serious disruption. Kojo Electrics provides reliable generator servicing and maintenance for homes, businesses, landlords, and critical facilities across Sutton and South London, keeping your generator ready to respond the moment it's needed.

Whether it's keeping the lights on at home, powering an office, or supporting essential systems like lifts, alarms, or medical equipment, a backup generator only earns its keep if it starts reliably every single time. Regular servicing protects that reliability, extends the generator's working life, supports legal compliance, and helps you avoid the kind of unexpected breakdown that shows up at the worst possible moment — during an actual power cut.

What our generator servicing covers

• Visual and mechanical inspection – checking for leaks, corrosion, and worn or damaged components
• Fluid checks – engine oil, coolant, and fuel levels topped up and inspected for contamination
• Load testing – confirming the generator performs correctly under real demand, not just at idle
• Battery and starting system checks – so the generator actually starts when the power fails
• Transfer switch testing – verifying the automatic changeover between mains and generator power works as it should

Why regular servicing matters

A generator that sits unused for months is exactly the kind of equipment that fails silently — until you actually need it. Manufacturers typically recommend periodic test runs under load alongside professional servicing at least twice a year, and for buildings where a generator supports fire alarms, emergency lighting, lifts, or medical equipment, keeping it in efficient working order isn't just good practice, it's a legal responsibility for whoever is accountable for the building's safety systems.

Why choose Kojo Electrics

• Scheduled maintenance plans – tailored to your generator size, usage, and how critical it is to your operations
• Rapid response – support when you need it, not just during a scheduled visit
• Compliance-focused servicing – documented records to support your legal and insurance obligations
• Experience across sectors – homes, landlords, offices, and facilities relying on critical backup power

Book a generator service today

Contact Kojo Electrics to arrange servicing for your backup generator in Sutton or South London, and make sure it's ready before you actually need it.

Generator Servicing: Frequently Asked Questions

How often should a backup generator be serviced?

Most manufacturers recommend a professional service at least twice a year, alongside shorter test runs under load in between — commonly done weekly or monthly depending on the setting. Generators supporting critical systems, such as fire alarms, lifts, or medical equipment, generally warrant closer attention and more frequent checks.

Is generator maintenance a legal requirement?

If your generator supports life safety systems — fire alarms, emergency lighting, lifts, or medical equipment — keeping it in efficient working order is a legal responsibility for whoever is accountable for the building's fire and safety compliance. Even outside those situations, most manufacturer warranties are conditional on regular servicing being carried out and documented.

How much testing can a standby generator run without extra permits?

Under current environmental regulations, a backup generator used solely for on-site emergencies is generally limited to no more than 50 hours of testing and maintenance running each year without needing additional environmental permits. This is worth bearing in mind if you're planning a testing schedule, particularly for larger generators.

What happens if a generator isn't serviced regularly?

Unused generators are prone to failing silently — a flat battery, degraded fuel, or a stuck transfer switch might go unnoticed for months until the exact moment the generator is actually needed. Regular servicing catches these issues early, rather than discovering them during a real power cut.

Are there noise restrictions on running a generator?

Yes. Local authorities set noise limits that vary by time of day, and generators running late at night are held to stricter limits than during the day. If your generator is used for testing or extended running, it's worth checking with your local council's environmental health department, since breaching noise limits can result in an abatement notice.

What's the difference between a standby generator and a prime power generator?

A standby generator is designed purely as backup — kicking in during an emergency or power cut and running for limited periods. A prime power generator, by contrast, is built to run continuously or regularly as a primary power source. The maintenance schedule and equipment specification differ significantly between the two, so it's worth confirming which type you have before setting a service plan.

Can a generator servicing contract help with insurance requirements?

Often, yes. Many insurers expect documented evidence of regular generator maintenance, particularly where the generator supports critical systems. A service contract with Kojo Electrics provides that paper trail, which can matter significantly if you ever need to make a claim.