How HVAC Systems Work

Choosing a System for Your Home

In the Houston and surrounding markets, there are two types of ducted system options to consider: Air Conditioners or Heat Pumps. Both are comprised of an outdoor unit and indoor equipment, typically located in the attic, but use different technologies to cool and heat your home. Another option to consider in cooling smaller spaces are mini splits, which are often referred to as "ductless systems."

So you might be wondering, what's the difference between an Air Conditioner and a Heat Pump?

Heat Pump Systems

Heat pumps are an energy-efficient alternative to furnaces and air conditioners, suitable for climates. Heat pumps use electricity to transfer heat from one area to another.

Heat pumps have a reversing valve that allows refrigerant to switch flow based on the need to cool or heat an indoor space.
During cooling season, heat pumps move heat from inside your home to the outdoors
During heating season, heat pumps move heat from outside in to your home

Even in very cold climates, heat pumps efficiently transfer heat to provide comfortable temperatures inside your home. Because heat pumps run on electricity, they reduce the need for natural gas. Heat pumps also generally put out more cool and warm air by volume than the amount of energy is takes to run them.

Central Air Conditioners

Central air conditioners, also known as a 'Split-System Central Air Conditioners,' are comprised of separate heating and cooling components. The outdoor unit, known as a condenser, cools air in your home using refrigerant, while the indoor furnace provides heat.

Outdoor unit: Condenser
- Heat exchanger
- Fan
- Compressor
Indoor unit: Furnace
- Heat exchanger
- Blower

Air Conditioners use the most energy when they 'kick on', which occurs when the thermostat calls for cooling after a period of rest. Consider asking your local Pro Partner about variable speed systems, which result in greater energy efficiency and utility savings when compared to standard single stage systems.

Mini Split Systems

Ductless mini split heat pumps (also called “mini splits”) are an excellent option for retrofitting houses with non-ducted systems. They are also ideal for room additions where extending or installing distribution ductwork is not feasible and for very efficient new homes that require only a small space conditioning system. For maximum energy savings, choose an ENERGY STAR® certified unit and hire an experienced installer.