Wellis® Inverter Heat Pumps, apart from being one of the quietest Heat Pumps available, they are probably the best value Inverter Spa Heat Pump available with 2022 models come with built in WIFI allowing Real-Time monitoring and simple control of the heat pump, where ever you are. 
The Wellis® Inverter Heat Pumps can save energy by intelligently adjusting the heating capacity between 20% to 100% according to the different heating demands and the ambient air temperature.
 
At the beginning of the Season, to initially heat your spa from cold, the Wellis® Inverter Heat Pump will run at full 100% speed, but once the pool is up to temperature and the water just needs maintaining at your desired temperature, the Inverter will reduce speed without losing effectiveness. At this time the heat pump will have a COP (Coefficient of Performance) of over 14 and will be quieter than your Fridge.
 
Wellis® Inverter Heat Pumps - 7 Times Quieter than On Off heat Pumps
Stepped Variable Speed Inverter - With Built In WIFI
Mitsubishi Compressor and fan
Wellis® Inverter Reduces Running Costs by up to 75% (COP Up To 14.5)
Works Even When Ambient Air Is 0°C & Heats Water Up To 40°C
Suitable for both Inground & Above Ground Spas
5 Year Spiral Heat Exchanger Warranty & 2 Year Parts Only Warranty 
Titanium Heat Exchanger 
Eco Friendly R32 Refrigerant 
 
MODELS AVAILABLE:
PSL150-0262 – 7kW
PSL150-0264 – 11.5kW