Most homes today rely on central heating and cooling systems to stay comfortable year-round. Here in Phoenix, that’s especially true of air conditioners. Without them, summers can be downright dangerous! While it’s easy to enjoy the comfort these systems provide, understanding how they actually work can help you make better decisions when it’s time for tune-ups, repairs, or heating or AC replacement service.
What Is a Central HVAC System?
A central system is designed to heat and cool your entire home through a network of ducts. It typically includes a central unit—like a furnace and air conditioner or a heat pump—that conditions the air, and a system of ducts that distributes that air evenly throughout the home.
In the cooling season, the air conditioner pulls warm air from inside your home, removes the heat and humidity, and pushes cool air back through the vents. In the heating season, the furnace or heat pump warms the air and circulates it the same way.
Key Components of Central Heating and Cooling
Here’s a breakdown of the essential parts that keep your system running:
- Thermostat – Controls the temperature settings and activates the system as needed
- Furnace – Heats the air using natural gas, electricity, or oil
- Air Conditioner – Uses a refrigerant cycle to remove heat from indoor air
- Heat Pump – A two-in-one unit that can both heat and cool
- Evaporator and Condenser Coils – Work together to cool the air
- Air Handler – Moves conditioned air through the ducts
- Ductwork – A series of air passages that distribute heated or cooled air throughout your home
How It All Comes Together
The process starts when your thermostat detects that the indoor temperature is above or below your desired setting. It signals the central unit to turn on. For cooling, the system uses refrigerant to absorb heat from your indoor air and release it outside. For heating, the system either burns fuel or draws heat from the outside air and circulates it through the ducts.
A well-functioning system keeps your home at a consistent temperature with good airflow and indoor air quality. Regular maintenance can help prevent issues and improve energy efficiency. It’s also essential to ensure your HVAC systems last their full lifespan. We recommend an HVAC Maintenance Plan so that you don’t forget to schedule, as it’s also a good way to save money for when you eventually need repairs.
Heating and Cooling Services in Phoenix, AZ
At CDL Mechanical, we help homeowners in Phoenix stay comfortable year-round with reliable heating and cooling services. Whether you need system maintenance, a repair, or a full installation, we’ve got you covered. Contact us today to schedule an appointment.
