Officials approved spending $1.3 million for a climate control system that will work with a new $7 million heating, ventilation and air conditioning unit being installed on the main terminal at Dayton International Airport.

The existing HVAC has not been updated in 40 years.The system will allow airport operators to control the climate inside all 360,000 square feet of the terminal, making the environment more comfortable for airport passengers and employees. The system also will save the city 22% to 25% in utility costs, which now run $1.1 million to $1.2 million a year.

The HVAC unit has not been upgraded in roughly 40 years, even while airport facilities have been upgraded during that time.

The contract approval for the HVAC unit is part of a continuing $130 million plan to renovate the terminal over the next decade.