5kVA Diesel Generator
R31 038.50 incl. VAT
The 5kVA diesel generator delivers approximately 4kW of usable power with the fuel efficiency and longevity advantages of a diesel engine. It is the entry-level diesel model suited to small businesses, smallholdings, and farm buildings where load shedding or grid unreliability requires extended daily generator use.
Diesel generators cost more upfront than petrol equivalents but recover that cost difference through lower running costs — particularly for users running the generator 4–8 hours per day. Diesel engines also last significantly longer under sustained load than petrol engines of the same output.
Safety warning: Diesel generators produce carbon monoxide and must be operated outdoors or in areas with substantial ventilation. Never operate indoors or in an enclosed space.
Price: R26,990. Contact PowerVault ZA on +27 83 476 8779 to confirm current stock, available brands, and specifications.
Estimated Delivery Timeline
Delivery timelines are estimates. Orders typically arrive within 3–5 business days after payment is confirmed.
Why Choose a 5kVA Diesel?
The 5kVA diesel generator delivers the same usable output as a 5kVA petrol generator but with a diesel engine that burns approximately 35–40% less fuel per kilowatt-hour. For applications where the generator runs for extended periods daily — 4 to 8 or more hours — the fuel saving compounds quickly.
At a diesel price of approximately R23/litre, a 5kVA diesel generator running at 50% load consumes 0.8–1.0 litres per hour, costing approximately R18–R23 per hour to run. An equivalent petrol generator at R21/litre and 1.2–1.5 litres per hour costs R25–R32 per hour to run. The diesel unit saves R7–R9 per hour — representing R700–R900 per 100 hours of operation. For a business running the generator 6 hours per day, this is a saving of approximately R42–R54 per day, or R900–R1,200 per month.
Applications
Small retail stores that need to keep tills, fridges, lighting, and POS systems running, smallholdings and small farms requiring pump and lighting backup, schools and churches needing reliable backup for essential systems, and workshops and light industrial sites requiring power tool capacity.
Maintenance
Diesel generators require oil changes every 50–100 hours of operation, air filter cleaning or replacement, and fuel filter changes. A qualified generator technician should perform a full service annually or every 500 hours.
Safety — Carbon Monoxide
Diesel generators produce carbon monoxide during operation. While diesel engines typically produce lower concentrations of CO than petrol engines at equivalent output, the gas is still dangerous in enclosed spaces. Operate outdoors or in areas with substantial cross-ventilation. Never operate in a closed garage, storeroom, or any enclosed area without direct outdoor airflow.
Frequently Asked Questions
Q: Why is a 5kVA diesel more expensive than a 5kVA petrol?
A: Diesel engines have heavier, more robust construction to withstand higher compression ratios. They cost more to manufacture but last significantly longer and cost less per kilowatt-hour to run. For frequent daily use, the total cost of ownership of a diesel generator is lower than petrol over 3–5 years.
Q: How loud is a diesel generator?
A: Open-frame diesel generators are typically 72–80 dB at 7 metres — slightly louder than equivalent petrol models. For applications near residential properties or noise-sensitive environments, sound-attenuated enclosures are available separately.
3 reviews for 5kVA Diesel Generator
Add a review
Related products
Generators
Dual-Fuel Generators
Generators
Generators
Dual-Fuel Generators
Generators
Diesel Generators
Generators
Johan Ferreira –
We run a small panel beating workshop in Vryburg and the 5kVA diesel generator has been running six to eight hours a day during Eskom outages for the past year. Not a single breakdown. Fuel consumption is reasonable and the controls are straightforward. PowerVault delivered on time and the unit arrived pre-checked. Solid workhorse at a good price.
Elzette van Niekerk –
This 5kVA diesel generator is the backbone of our small guest house in Clarens during load shedding. Runs the kitchen, lighting and two rooms comfortably. Reliable, easy to service and fuel is easy to source locally. PowerVault had the best price compared to local hardware suppliers and delivery to the Free State was on time.
Gavin Fourie –
The 5kVA Diesel Generator has performed flawlessly since we installed it. Build quality is solid and the specifications match what was advertised. PowerVault processed our order quickly and delivery was well within the estimated timeframe.