New Diesel Generators Compared to Used Generators.

There is such a wide choice available when it comes to choosing a generator, so where to start?

After identifying your requirements for use, ie to power heavy equipment or to provide prime, standby or emergency backup power, you then need to decide whether to go for new or used.  There are a number of factors to consider.

new and old diesel generators for sale. How do you choose?

New GeneratorsComparison between new and used diesel generators

The main reason for buying a new generator is having the benefit of a manufacturer’s warranty.  These warranties vary significantly in their length and terms but they tend to be between 1 and 2 years.  They can however sometimes significantly increase the overall cost.  Something else to bear in mind is the timescales involved when buying a new generator.   Depending on the size and manufacturer there may be a longer wait or limited availability than if buying a used model.

So if you have the time to wait and would prefer a full manufacturer’s warranty and the security that offers, then a new generator could be the right choice for you.

Comparing Used and New Diesel Generators

Used Generators

Typically used generators do not come with a warranty, however it can be very advantageous to purchase a used model for a number of reasons.  One of these advantages is, of course, cost.  Often used models, even with low hours on the engines, are substantially less than the cost of a new one with savings of anything up to about 50% compare to the cost of a new one.

Another benefit of opting for used is that of availability.  They can be bought and installed very quickly, you can simply purchase and arrange shipping immediately.

Also it is important to bear in mind that big name manufacturers build industrial strength equipment that is built to last so the risk is negligible.  Generators have a long life span, build to carry out their function of providing essential power, whether it be prime, standby or emergency.  Also depending on the age of the generator it may still have some manufacturer’s warranty and in some cases the dealer will provide some sort of guarantee.

The only potential downside of buying a used generator is just that, it is used and not new.  You therefore have to trust the seller to provide such details, as when buying a used car, like history, condition and previous usage.  This makes is essential to purchase from a reputable dealer, with experience and technical expertise, who have tested and repaired where necessary.

Rebuilt Diesel Engines

To add yet another choice into the decision making process….. the re-built diesel generator.  These generators go through a very thorough process of complete disassembly during which all parts are cleaned and tested before being re-assembled.  Each part including cylinder blocks, cylinder bore, counter bores and crank bores, water passages, connecting rods and blowers, water pumps, fuel pumps etc are cleaned, checked and replaced where necessary.  The result being a diesel generator that is almost as good as new with bearings, seals, gaskets and all other consumables replaced with new.

The re-built generator is then tested and the results recorded along with specifications, so that the customer has all the details they need.

This option can be very advantageous. Although the generator is not new, it is thoroughly re-built and tested, they are in most cases as good as new.  It is important when buying a re-build, you ensure to buy from a reputable supplier with experience of re-building.

So to summarise, whilst buying new gives you the security of a manufacturer’s warranty, used is less expensive and the risk is still low.

Contact Eagle Generators for advice or assistance when making your decision of which generator to buy; new, used or a re-build. We are more than happy to help and will provide more information on specific models for comparison. call us on freephone 0800 999 3303+44 (0) 121 5570270 or e-mail us on today.


Eagle Generators – Great range of diesel generators available. Worldwide delivery.