Zerodegree Ltd is an air conditioning company located in London that provides maintenance, service, and repair for commercial air conditioning units. Their maintenance costs vary depending on the number of units, from £120 per unit for 1-3 units to £40 per unit for 16-38 units, with a minimum 1 hour charge for all call outs. They also have on-site charges for work done outside of normal business hours from £125-158 per hour depending on the day and time. Additional costs may include equipment, gas, parts, congestion charging, and parking fees.