The Airspa System:-. The Whirlpool System This is a good quality strong bath. Fully Self Draining . Just requires Electrical Connection . These are solid brass Jets . Once the system has been switched off, after approx 30minutes the system will automatically switch on for approx 30-60 seconds, this then purges any residual water from the pipework, keeping the system clean.The System is produced in our own factory and the Baths are sourced from UK suppliers.