(KNZA)--The South Brown County USD 430 Board of Education, when they meet last week, approved bids for the installation of new HVAC units at the district's three schools.

The HVAC upgrades are part of an up to $7 million bond issue approved by USD 430 voters last November.

The board approved U.S. Engineering to install the HVAC systems in all three buildings.

Shelley Electric will be the electrical contractor for the Elementary and Middle schools. Ziegler Electric will be doing the electrical work for the High School.

Superintendent Jason Cline said the cost for all services totals nearly $3.9 million, which is nearly $17,000 below the HVAC estimated budget.

Cline said the next big project to bid out will be replacement of the doors and windows at all the buildings. A pre-bid meeting for that project will be held on Monday, February 21.

Currently, he said they are nearly $248,000 below the projected cost for the projects that have been approved so far.