What should also be checked when reviewing HVAC plans?

When reviewing HVAC plans, it's crucial to check heat detector locations because the effectiveness of a fire detection system can hinge significantly on the design and placement of the HVAC system. Properly placed heat detectors ensure that they can quickly and accurately sense temperature increases within the space, particularly in areas where heated air moves through ducts.

A well-designed HVAC system should not impede the performance of fire detection systems. For instance, if air movement from the HVAC system causes a heat detector to become less effective—by air currents pushing heated air away from the detector or by the detector being placed in a location that doesn't reflect the actual conditions of the space—it could lead to delayed or missed detection of a fire.

Addressing the other factors such as ventilation efficiency, duct material, and insulation rating, while essential to the overall functioning and efficiency of the HVAC system, does not directly impact the effectiveness of fire detection. Therefore, ensuring that heat detectors are appropriately positioned in relation to the HVAC design is a critical aspect of fire safety that must be emphasized during the review of HVAC plans.