NATE HVAC SUPPORT TECHNICIAN
PRACTICE PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
●● Conduction. Answer: The transfer of heat through direct contact
between objects or materials in residential HVAC systems
●● Radiation. Answer: The transfer of heat through electromagnetic
waves, such as infrared radiation, in residential HVAC systems
●● Absorption. Answer: The process of heat being taken in or absorbed
by a material in residential HVAC systems
●● Wet bulb temperature. Answer: The temperature measured on the
bottom line of a psychrometric chart, which takes into account the
cooling effect of evaporation
●● Dry bulb temperature. Answer: The temperature measured on the
bottom line of a psychrometric chart, which does not take into account
the cooling effect of evaporation
●● Humidity. Answer: The amount of moisture present in the air,
measured on the bottom line of a psychrometric chart
, ●● Enthalpy. Answer: The total heat content of a substance, including
both sensible and latent heat, measured on the bottom line of a
psychrometric chart
●● 1-inch fiberglass filters. Answer: Filters used in HVAC systems to
control odors and improve indoor air quality
●● 4-inch pleated filters. Answer: Filters used in HVAC systems to
control odors and improve indoor air quality
●● Electronic air cleaners. Answer: Devices used in HVAC systems to
control odors and improve indoor air quality by electronically charging
particles and capturing them on collection plates
●● Charcoal filters. Answer: Filters used in HVAC systems to control
odors and improve indoor air quality by adsorbing odorous substances
●● D:S ratio of 10:1. Answer: The distance-to-spot ratio of an infrared
thermometer, indicating that the temperature measurement is taken from
a distance of 1 foot for every 10 feet of distance to the target
●● PLAN. Answer: A blueprint view that provides an overhead
perspective of a construction project
PRACTICE PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
●● Conduction. Answer: The transfer of heat through direct contact
between objects or materials in residential HVAC systems
●● Radiation. Answer: The transfer of heat through electromagnetic
waves, such as infrared radiation, in residential HVAC systems
●● Absorption. Answer: The process of heat being taken in or absorbed
by a material in residential HVAC systems
●● Wet bulb temperature. Answer: The temperature measured on the
bottom line of a psychrometric chart, which takes into account the
cooling effect of evaporation
●● Dry bulb temperature. Answer: The temperature measured on the
bottom line of a psychrometric chart, which does not take into account
the cooling effect of evaporation
●● Humidity. Answer: The amount of moisture present in the air,
measured on the bottom line of a psychrometric chart
, ●● Enthalpy. Answer: The total heat content of a substance, including
both sensible and latent heat, measured on the bottom line of a
psychrometric chart
●● 1-inch fiberglass filters. Answer: Filters used in HVAC systems to
control odors and improve indoor air quality
●● 4-inch pleated filters. Answer: Filters used in HVAC systems to
control odors and improve indoor air quality
●● Electronic air cleaners. Answer: Devices used in HVAC systems to
control odors and improve indoor air quality by electronically charging
particles and capturing them on collection plates
●● Charcoal filters. Answer: Filters used in HVAC systems to control
odors and improve indoor air quality by adsorbing odorous substances
●● D:S ratio of 10:1. Answer: The distance-to-spot ratio of an infrared
thermometer, indicating that the temperature measurement is taken from
a distance of 1 foot for every 10 feet of distance to the target
●● PLAN. Answer: A blueprint view that provides an overhead
perspective of a construction project
