A. Higher outside air intake
B. Filter clogging
C. Increased fan speed
D. Over-ventilation
Comment with the "right option and your explantion"
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Balakrishna Chappa 03 December, 2025 at 13:07favorite_border2
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My answer would be option A, as you take more outside air, the operation of the AHU will increase to cool the air which has taken from outside. Which results into increased energy.
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Manjunath Muniyappa 02 December, 2025 at 12:30favorite_border2
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A is the right option.f you increase fresh air from 10% to 30%, the HVAC must: cool more hot outdoor air (in summer) heat more cold outdoor air (in winter) → leading to higher energy use.
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Aditya Pratap Singh 02 December, 2025 at 12:04favorite_border2
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A is more right answer
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Sagar Varpe 02 December, 2025 at 12:00favorite_border2
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Right Option: D — Over-ventilation Explanation: When a system brings in more outside air than required, the Indoor Air Quality (IAQ) improves because fresh air dilutes indoor contaminants. However, conditioned outside air is the most energy-intensive load on an HVAC system. More outside air means increased heating/cooling and fan energy → higher energy consumption. While higher fan speed or filter clogging can increase energy, they do not directly improve IAQ. Over-ventilation does both: improves IAQ and increases energy use.
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Mahesh Mokashi 02 December, 2025 at 11:51favorite_border2
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A because When indoor air quality (IAQ) improves, it’s often due to bringing in more fresh outside air to dilute indoor pollutants
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Abhishek 02 December, 2025 at 11:49favorite_border1
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A
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Ranjan Kamle 02 December, 2025 at 11:48favorite_border1
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D. Over-ventilation. When ventilation rates are increased to improve IAQ, more outside air is brought in, requiring the HVAC system to work harder to heat or cool it, leading to higher energy use.
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03 December, 2025 at 13:07 favorite_border 2
My answer would be option A, as you take more outside air, the operation of the AHU will increase to cool the air which has taken from outside. Which results into increased energy.
02 December, 2025 at 12:30 favorite_border 2
A is the right option.f you increase fresh air from 10% to 30%, the HVAC must: cool more hot outdoor air (in summer) heat more cold outdoor air (in winter) → leading to higher energy use.
02 December, 2025 at 12:04 favorite_border 2
A is more right answer
02 December, 2025 at 12:00 favorite_border 2
Right Option: D — Over-ventilation Explanation: When a system brings in more outside air than required, the Indoor Air Quality (IAQ) improves because fresh air dilutes indoor contaminants. However, conditioned outside air is the most energy-intensive load on an HVAC system. More outside air means increased heating/cooling and fan energy → higher energy consumption. While higher fan speed or filter clogging can increase energy, they do not directly improve IAQ. Over-ventilation does both: improves IAQ and increases energy use.
02 December, 2025 at 11:51 favorite_border 2
A because When indoor air quality (IAQ) improves, it’s often due to bringing in more fresh outside air to dilute indoor pollutants
02 December, 2025 at 11:49 favorite_border 1
A
02 December, 2025 at 11:48 favorite_border 1
D. Over-ventilation. When ventilation rates are increased to improve IAQ, more outside air is brought in, requiring the HVAC system to work harder to heat or cool it, leading to higher energy use.