Glossary - Air Concepts

Jul 17, 2018


Welcome to the comprehensive glossary of terms related to heating, cooling, and air conditioning provided by Alfa Heating and Cooling, your trusted source for top-notch HVAC services. In this glossary, we aim to provide you with detailed explanations of various industry-related terms, enabling you to make informed decisions when it comes to your HVAC system.

1. Air Conditioning

Air conditioning is the process of altering the properties of air to improve indoor comfort by cooling and dehumidifying the air within a defined space. It involves various components such as compressors, condensers, evaporators, and refrigerants, working together to regulate temperature and airflow.

2. BTU

BTU, short for British Thermal Unit, is a unit of energy commonly used in the heating and cooling industry to quantify the heat content of fuels and heating/cooling systems. It represents the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

3. Ductwork

Ductwork is a network of interconnected conduits installed in buildings to distribute heated, cooled, or ventilated air. It plays a crucial role in maintaining proper airflow and ensuring optimal temperature control throughout the entire HVAC system.

4. Energy Efficiency Ratio (EER)

The Energy Efficiency Ratio (EER) is a measurement used to assess the energy efficiency of air conditioning systems. It represents the ratio of cooling capacity in BTUs per hour to the electrical power input in watts. Higher EER values indicate higher energy efficiency and cost savings.


HVAC stands for Heating, Ventilation, and Air Conditioning. It refers to the technology and systems used to provide thermal comfort and maintain indoor air quality in various buildings, ranging from residential homes to commercial establishments.


SEER, which stands for Seasonal Energy Efficiency Ratio, is a standard measurement used to assess the energy efficiency of air conditioning systems. It represents the cooling output during a standard cooling season divided by the total electric energy input during the same period. Higher SEER ratings indicate higher energy efficiency and potential cost savings.

7. Thermostat

A thermostat is a device used to regulate and control the temperature of an HVAC system. It allows users to set desired temperatures and ensures the system operates to maintain those temperatures, providing optimal comfort and energy efficiency.

8. Ventilation

Ventilation is the process of providing fresh air to a space and removing stale or polluted air. Proper ventilation helps maintain indoor air quality, prevent the buildup of heat and humidity, and ensure a healthy and comfortable living or working environment.

9. Zoning

Zoning is a method used in HVAC systems to divide a building into separate zones, each with its thermostat and independent temperature control. This allows for more precise temperature regulation, increased energy efficiency, and personalized comfort for different areas within the building.

10. Maintenance

Maintenance refers to the regular upkeep, inspection, and servicing of HVAC systems to ensure they function efficiently and avoid potential breakdowns. Regular maintenance helps extend the lifespan of the system, improve energy efficiency, and minimize the risk of costly repairs.


We hope this glossary has provided you with a comprehensive understanding of key terms related to heating, cooling, and air conditioning. Feel free to refer back to this resource whenever you encounter unfamiliar terminology or have questions about your HVAC system. For all your heating and cooling needs, trust Alfa Heating and Cooling, your experts in the Business and Consumer Services category. Contact us today for professional HVAC services tailored to your requirements.

Andrew Parrish
Just what I needed! Finally understand all the jargon 😅👌🏼
Nov 11, 2023
Felix Friedman
Very informative!
Nov 8, 2023
Russell Dougherty
This glossary is so helpful for understanding HVAC terms!
Oct 14, 2023