What Should You Know About Variable Refrigerant Flow Systems?
Updated: Mar 25
Like ductless mini splits, variable refrigerant flow (VRF) systems use refrigerant as the cooling and heating medium. Unlike conventional chiller-based systems, VRF systems allow for varying degrees of cooling in certain areas, reducing overall energy consumption.
A study conducted by the Georgia Institute of Technology found that office buildings can save more than 46 percent on power bills if they use a VRF system. Though the initial setup cost of VRF systems is higher than traditional systems, they save you more money in the long run, as they use less energy.
You can equip your building with a VRF system in two ways. If you want to install a VRF system in a new building, design accordingly. Should you want to install a VRF system in an existing building, retrofit and modify it.
A VRF system consists of an outdoor inverter compressor, low-temperature & high-temperature gas lines, and multiple indoor air handling units. There are two types of VRF systems: ductless and ducted systems.
How Do VRF Systems Work?
Ducted VRF systems route the air directly to the handling units. When you switch on the system, the coolant moves from the compressor to the handling units, which contain a fan and coil. As air flows over the fan and coil, heat is converted between the coolant lines and the air. The fan then blows the conditioned air into the home.
There are several benefits of VRF systems, including quieter operation, hassle-free maintenance, and superior energy-efficiency. Users have precise control over the coolant flow and multiple individual zoning controls from which they can choose. The setup offers better indoor comfort.
Types of VRF Systems
Cooling Only Systems
Similar to a regular air conditioning system, a cooling-only system works by removing the heat and humidity from spaces. Cooling-only systems do not heat spaces, which means you will have to turn to a heating system during the cooler seasons.
Heating and Cooling VRF Systems
As the name suggests, a heating and cooling VRF system can both heat and cool spaces simultaneously. You can set these systems to cool in some rooms while heating in others.
Heating or Cooling VRF Systems
These systems are similar to central heating systems that come with both a furnace and air conditioner. You can set this system to either heat or cool spaces (but not at the same time).
Cozy Home Services is a reputable heating and air conditioning contractor in Fairfield. We go the extra mile for our customers to deliver your project on-time and on-budget. To schedule a consultation, call (707) 474-5097.