Using heat-reclaim coils will help improve a building's overall:

• A. Heat efficiency
• B. Cooling capacity
• C. Humidity control
• D. Noise reduction

Answer: (A)

Heat-reclaim coils capture energy from the building’s exhaust air and use it to temper the incoming outdoor air. By preheating (or otherwise conditioning) the fresh air before it goes through the main heating system, the HVAC equipment has less work to do to reach comfortable temperatures. That reduces the heating load and lowers energy consumption, improving the building’s overall heat efficiency. They don’t directly boost cooling capacity, and while they can influence comfort, they don’t specifically control humidity or reduce noise—their primary benefit is energy efficiency through heat recovery.