07 REFERENCESTopic dossier

Indoor Comfort and Cooling

Use temperature, humidity, equipment behavior, and room conditions to choose the next safe check.

Start with the question.

Investigate rooms that feel hot, humid, dry, or uneven and screen cooling capacity without crossing professional safety boundaries.

HS-0001Why Is My Air Conditioner Not Cooling?

Check thermostat settings, airflow, and the pattern of poor cooling. Learn what you can observe safely and when to stop and call a technician.

HS-0002Thermostat Not Reaching the Set Temperature

Compare the set temperature, room reading, runtime, and airflow before replacing a thermostat. Separate a control problem from a heating or cooling problem.

HS-0003Indoor Humidity and Dew Point

Understand relative humidity, temperature, and dew point together. Calculate dew point and identify moisture sources before buying humidity-control equipment.

HS-0004Cooling BTU Estimate: A Screening Guide

Estimate room AC capacity from floor area, sunlight, height, and occupancy. Understand why room sizing is not a whole-home HVAC load calculation.

HS-0005Why Does My Furnace Short Cycle?

Record short heating cycles, visible airflow restrictions, and error indicators. Know when a repeated shutdown needs professional service rather than another reset.

HS-T01Cooling BTU estimator

Screen a room air-conditioner capacity range from area, ceiling height, sun exposure, and occupancy.

HS-T02Humidity and dew point calculator

Calculate dew point and place an indoor relative-humidity reading in useful context.

GLOSSARYWorking vocabulary

Terms that make
the system legible.

Relative humidity: The percentage of water vapor present compared with the maximum possible at the same temperature.
Dew point: The temperature at which air reaches saturation and condensation can begin.
BTU per hour: A rate of heat transfer used to describe heating or cooling capacity.

Indoor Comfort and Cooling

Terms that makethe system legible.

Terms that make
the system legible.