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The most efficient way to heat a hot tub or swim spa. Ask us about adding one — it pays for itself in running costs:
Up to 75% cheaper to heat
An air source heat pump moves heat rather than making it, so it sips electricity where the built-in heater guzzles it — dramatically lower running costs.
Around 5kW of heat per 1kW used
It draws free warmth from the outside air, delivering roughly four to five times the energy it consumes (a COP of ~4–5).
Warm all year round
Efficient down to low outdoor temperatures, so your spa stays at temperature through autumn and winter, not just the summer.
Quieter and greener
A quiet, weatherproof outdoor unit with a much smaller carbon footprint than heating on the electric element alone.
Bring the luxury of a spa retreat into your own garden with the Retreat ProOne. Designed with comfort, style and performance in mind, this spacious 5-person hot tub measures 2100 x 2100 x 850mm, offering three comfortable seats alongside two full-length loungers.
With 41 hydrotherapy jets, combining directional and rotational jet types, the Retreat ProOne is designed to provide a relaxing massage experience across your body. Whether you’re looking to ease away everyday tension or simply enjoy a peaceful soak, the carefully positioned jets help create a truly relaxing experience.
The spa is fitted with the reliable Balboa BP200G1 & TP500 control system, giving you straightforward control over the temperature, jets and lighting. A powerful 2000W heater helps maintain your chosen water temperature, while the 3HP pump provides plenty of power for the hydrotherapy system.
When the sun goes down, the Retreat ProOne really comes to life. 18 LED waterline lights, a 5” underwater light and two LED fountains create a relaxing atmosphere around the spa. You can also connect your own music through the integrated Bluetooth speakers, making it easy to set the perfect mood.

Hot Tub Hard Thermal Cover Lid
£495 FREE
That's £1,442.98 of extras included at no cost.
Despite its impressive features, the Retreat ProOne is designed with efficiency in mind. Operating on a 13AMP electrical supply, it incorporates an energy-efficient circulation pump and Level 3 Elite insulation, including wrap-around, pipework and skirt insulation. This helps retain heat within the spa and reduce unnecessary energy loss. The spa is also Heat Pump Ready, giving you the option to further improve efficiency.
Water care is made easier with a single filtration system and built-in ozone purification, helping to keep the water clean and clear while reducing the amount of day-to-day maintenance required.
Whether you’re enjoying a quiet evening alone, spending time with your partner or relaxing with family and friends, the Retreat ProOne provides everything you need to create a comfortable and inviting outdoor escape.
* Two-year cover relates only to the spa electrical pack.
Air source heat pump (optional)
Optional extras
Choose your payment option
Includes nationwide delivery and positioning by our installation team. Delivery details · Finance available