Residential vs Commercial HVAC Flashcards
7 cards from real HVAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Residential vs Commercial HVAC flashcards as text
ASHRAE Standard 90.1 applies primarily to:
Answer: Commercial buildings and high-rise residential energy efficiency
ASHRAE 90.1 sets minimum energy efficiency requirements for commercial buildings and serves as the basis for most commercial building energy codes.
A supermarket HVAC system presents unique challenges compared to standard commercial HVAC primarily due to:
Answer: Open refrigerated cases that significantly increase the cooling and dehumidification load
Open refrigerated display cases release cold air and moisture into the store continuously, dramatically increasing the sensible and latent cooling loads.
In commercial HVAC design, what is the purpose of a smoke control system?
Answer: To manage airflow during a fire to protect egress paths and aid firefighting
Smoke control systems use HVAC equipment to pressurize stairwells and create smoke-free evacuation paths during a building fire.
Which of the following best describes a 'split-system' residential air conditioner?
Answer: A system with the condenser/compressor outside and the evaporator/air handler inside
A split system separates the condensing unit (outdoor) from the evaporator coil and air handler (indoor), connected by refrigerant lines.
Compared to commercial systems, residential HVAC systems typically have:
Answer: Simpler on/off or two-stage controls with a single thermostat
Residential systems use simple thermostats with single-stage or two-stage control, whereas commercial systems use complex DDC sequences for multi-zone management.
A data center requires HVAC systems that prioritize which characteristic above all others?
Answer: Continuous uptime with redundant cooling capacity (N+1 or greater)
Data centers run critical IT infrastructure 24/7, so redundant cooling with N+1 or greater capacity ensures no single failure causes equipment overheating.
Which code or standard establishes minimum efficiency requirements for residential central air conditioners in the United States?
Answer: DOE minimum efficiency standards (SEER ratings)
The U.S. Department of Energy sets minimum SEER (Seasonal Energy Efficiency Ratio) ratings for residential central air conditioners, which vary by climate region.