Factors That Influence Cost The technology plan must address the costs of purchasing and replacing equipment and software, developing a network infrastructure, constructing and/or retrofitting facilities, professional development, and maintenance and technical support. Networking and hardware costs will be greatest at the beginning of an initiative; however, costs will shift over time. Many plans neglect hidden costs when planning for technology. Rooms may require retrofitting to accept network infrastructure, or they may become hotter with many computers running, which can impact HVAC (heating, ventilation, and air conditioning) costs. New technology may require new classroom fixtures such as ergonomically adjusted desks and chairs, additional electrical outlets, and storage for portable equipment. To avoid the safety hazard of cables on floors, you may need to raise flooring, purchase wireless hardware, or provide cabling systems. Following are examples of factors that can influence the cost of implementing your technology program. They are organized under five categories: Building modification Professional development Hardware and software Support and maintenance Connectivity