Free positioning and insulation across all ranges.
Delivery is £350 where straightforward access permits. Contact our team to discuss your access route.
Wet test facility available in our Atherstone showroom. Experience a spa before choosing.
Premium Caldera Spas in Atherstone
Explore the range, compare practical options and get advice from the Ultimate Hot Tubs team before planning your showroom visit.
Find your Caldera range
Compare Caldera comfort, seating and design
Caldera Spas™ are expertly designed and crafted to provide the ultimate in comfort, design, and performance, so you can achieve your goal of a healthy lifestyle.
Each Caldera Spas™ hot tub offers the many benefits of warm water therapy and hydromassage right at home, helping you feel renewed anytime—even when you have only a few minutes to spare.
Experience the Caldera Spas Difference Today, Click here to Download your Complimentary Brochure.
Ask about FreshWater IQ water care
On compatible Caldera spas, FreshWater IQ combines salt-based water care with smart monitoring. The Salt System generates chlorine, while Smart Monitoring checks pH, chlorine and salt levels and shows guidance on the spa’s control panel.
- Hourly checks help you keep track of water conditions.
- Clear readings are available on your spa’s control panel.
- Practical recommendations help you understand when adjustments are needed.
Ask us about FreshWater IQ availability for your chosen spa.
FreshWater: what is included?
Salt System included with Utopia: at Ultimate Hot Tubs, the FreshWater Salt System comes as standard with the Caldera Utopia range. For other compatible Caldera hot tubs it is available at extra cost. This offer does not apply to Fantasy spas or Endless Pools.
The Salt System and IQ Smart Monitoring are separate components. Ask us to confirm the monitoring, dosing or connected equipment supplied with your chosen spa.