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Articles tagged with #ashraestandards
A manufacturing plant recently discovered their ventilation system was consuming 40% more energy than necessary—costing them over $50,000 annually in wasted electricity—simply because their fan efficiency calculations used motor nameplate ratings ins...
A $250,000 chiller replacement project was nearly derailed when the engineering team discovered their load calculations were 40% oversized. The root cause? They entered humidity ratio in grains per pound without dividing by 7,000 in the Imperial enth...
In 2019, a downtown office tower experienced complete elevator shutdown during a summer heatwave because the machine room cooling was undersized by just 15%. The resulting emergency repairs cost over $50,000 in HVAC modifications and elevator service...
In 2019, a commercial retrofit project in Chicago faced $47,000 in rework costs because undersized ducts created excessive noise complaints from tenants. The engineering team had correctly calculated the airflow requirements but selected velocities t...
A commercial building in Chicago failed its energy audit because the design team underestimated duct heat loss by 35%—the resulting undersized HVAC equipment couldn't maintain comfort during peak winter conditions, requiring a $120,000 retrofit. This...
In 2018, a commercial office building in Miami experienced widespread mold growth just six months after a HVAC retrofit. The design team had specified cooling coils based on temperature differentials alone, missing that the new system's 15°C (59°F) s...
