An HVAC system — short for Heating, Ventilation, and Air Conditioning — works by controlling the temperature, humidity, and air quality in a space through three main processes:
1. Heating
A modern central HVAC system typically uses the same ducts and blower for both heating and cooling. In winter, it sends warm air; in summer, cool air. The ventilation system ensures the air you breathe is fresh and balanced, while filters and humidity controls make it comfortable and healthy. Click this link here now: fantasticheatpump.com/air-to-water-heat-pump/hvac-system
1. Heating
- Goal: Raise indoor temperature in cold weather.
- Common Method:
- A furnace burns fuel (natural gas, propane, or oil) or uses electric resistance heating to warm air.
- Heated air is pushed through ductwork by a blower fan into different rooms.
- In some systems, like boilers, water is heated and sent through radiators or underfloor pipes.
- Heat pumps can also provide heating by reversing their cooling cycle.
- Goal: Move fresh air in, push stale air out, and control humidity.
- How It Works:
- Natural ventilation: Air flows in and out through windows, vents, or cracks (less common in modern, energy-efficient buildings).
- Mechanical ventilation: Fans and ducts draw in fresh outdoor air, filter it, and distribute it indoors.
- Ventilation removes odors, moisture, carbon dioxide, and airborne contaminants.
- Goal: Remove heat and moisture from indoor air.
- Basic Cycle:
- Refrigerant absorbs heat from indoor air in the evaporator coil.
- A compressor pumps the refrigerant outside to the condenser coil, where heat is released into the outdoor air.
- The refrigerant returns indoors to repeat the cycle.
- The blower fan circulates cooled air through ducts.
- During cooling, dehumidification also happens because moisture condenses on the cold evaporator coil.
- Thermostat: The “brain” — tells the system when to heat or cool.
- Ductwork: Pathways for conditioned air to travel.
- Filters: Trap dust, allergens, and pollutants.
- Dampers: Control airflow in ducts for even distribution.
A modern central HVAC system typically uses the same ducts and blower for both heating and cooling. In winter, it sends warm air; in summer, cool air. The ventilation system ensures the air you breathe is fresh and balanced, while filters and humidity controls make it comfortable and healthy. Click this link here now: fantasticheatpump.com/air-to-water-heat-pump/hvac-system