Each HVAC item that is required for smoke control or life safety systems (air handling unit smoke detectors, fire/smoke or smoke dampers, stair pressurization fans, smoke exhaust fans) may require a dedicated wiring connection to the fire alarm system.

HVAC systems are divided into four categories which come in different sizes and specifications that fit into your home or business.

• Heating and cooling split systems. ...
• Hybrid split system. ...
• Duct free (Mini-split) ...
• Packaged heating and air conditioning system.