More than £10,000 has been spent on upgrading the centre in North Farm with a refurbishment and new equipment.
Charlie Foulkes, énergie Fitness Owner, said: “The focus is on ensuring members get the fitness results they want in a fresh, smart environment, supported by a friendly and knowledgeable team, all at a very affordable price.
“When we opened Fit4Less three years ago, we were blown away by the positive response to our combination of top equipment, great classes and low prices.
“As we have matured as a club, we’ve decided to keep improving by upgrading to énergie Fitness. With the new name comes a five figure investment in new equipment and a smarter place to exercise.”
Popular
The énergie Group is said to be the fastest growing fitness franchise in the UK, with other gyms in East Grinstead and Bromley, with several more having opened in London.
There are also plans for a second phase of investment next summer.
Mr Foulkes added: “Tunbridge Wells and Tonbridge are well served for gyms, but énergie Fitness is different because it offers the benefits of an expensive health club at the price of a budget facility.
“We can afford to give great service at a budget price simply because this formula is so popular.
“The prices include a wide range of classes too, all given by the best instructors available. In the same vein, the personal trainers are knowledgeable and passionate about helping people get the most from their gym-time.”
As part of a launch offer, the first 100 joiners in November will get a free month membership.
To find out more, visit: energiefitness.com/tunbridgewells