For any HVAC system's optimal functioning, you will probably require a wall seal and a refrigeration line set connecting the condenser to an evaporator. These line sets connect the indoor and outdoor units, where the condenser supplies the evaporator with a refrigerant with the help of the wall seals. For most residential applications that use a single indoor unit, you'll require a single line set. On the contrary, you'll need one line set per indoor unit for multi-zone air conditioning systems. Line sets come in different sizes based on factors, including the brand, number of indoor units, condenser size, and distance between units. To add a cherry to the cake, we painstakingly source the best products from trusted manufacturers like Friedrich, Mueller, Airex, and Streamline to ensure the line set you purchase is of the highest quality. In addition, you can also check out more HVAC components on the left side of the page and filter out the ones according to your need.