Both wind and temperature affect air pressure, so ventilation systems need to be able to overcome these fluctuating forces. The ideal pressure situation for a building would be positively pressurized, inverse to negative pressure. This creates an environment where the air quality is more ideal and negates issues such as: Difficulty Opening and Closing Doors - Doors in industrial buildings tend to be very heavy and connected to electronic controls, which can be damaged if closed improperly. Since negative pressure forces doors to shut and makes them more challenging to open, this can weaken the door’s controls, shorten its lifespan, and cause it to become completely inoperable. High Humidity - Negative pressure in a building creates a stagnant and moist environment, which is uncomfortable for people to work in and is also conducive to mold growth, rust accumulation, and more significant debris buildup. This creates an unhealthy and uncomfortable environment that can lead to even more significant issues down the line, such as machine failure. High Energy Costs - Correcting negative building pressure can save companies money on HVAC energy costs. A properly pressurized room is less stressful on HVAC systems, as the pressure gradient to overcome negative pressure and properly filter a room is less demanding, consuming less energy. More Mess - Negative air pressure in buildings can force outside debris and dirt inside when doors are open and shut, creating a dirty working environment that is not only unsanitary but also dangerous since debris can create safety hazards. Properly pressurized buildings don’t have this problem and can save time and money by cutting cleaning costs and labor. Insect Infiltration - Negative pressure at personnel entry and loading dock doors can invite unwanted visitors into your facility, like small or large insects that are easily pulled in by the pressure differential and are a huge sanitary issue for manufacturers of food or food-grade packaging. Hot and Cold Spots -Two previously mentioned side effects—high humidity and high energy costs—are both exacerbated by negative pressure due to the creation of hot and cold spots caused by this phenomenon. This is not only inefficient for HVAC purposes but could cause damage to machinery or products located in these hot or cold spots, potentially causing a lot of expensive energy loss.