Hull-based firm Airco Group has landed a £500,000 contract to service and maintain air conditioning units in 153 schools, libraries and offices across East Riding for the next five years.
Airco employs 45 staff at its head office in Hull but expects to employ more engineers in the future as a result of the contract.
The contract, awarded by East Riding of Yorkshire Council, is worth around £100,000 per year to the HVACR firm.
Paul Lough, operations director for Airco said: 'It is a fantastic boost for Airco and will enable us to set out our stall for at least the next five years.
He added: 'We believe that five companies were invited to tender for the contract and we demonstrated that we are the best-placed company to take on the work. There may also be spin off projects on the back of this which will boost the value of the contract further.'