AIR CON. TEST EQUIPMENT - Garage Equipment Money Savers recommend the N2PRO as probably the best value Air Conditioning Service Station available. At only £1849 + vat, the unit offers, full Automatic operations with Integrated Nitrogen testing facility, and with extra long connections it is suitable for most types of vehicles (We have even supplied the Royal Helicopter Flight of Oman). Delivery and Training is included in the price. 1 day City & Guilds Factory Training and Certificate courses available.