Inaccurate HVAC load calculations can lead to significant consequences, including discomfort, energy waste, and increased maintenance costs. Underestimating loads can result in undersized equipment, leading to hot or cold spots, while overestimating loads can lead to oversized equipment, resulting in wasted energy, reduced efficiency, and increased capital costs. Additionally, inaccurate load calculations can also lead to poor indoor air quality, moisture issues, and even equipment failure.