No — if you’re using the pre-charged line sets designed for these systems, you do not need to vacuum or charge refrigerant. The MRCOOL HyperHeat and VersaPro™ systems offer flexibility for both DIY installation and traditional professional installation.
For DIY installation, the system uses MRCOOL's pre-charged, vacuum-sealed quick-connect line sets, which come filled with the correct amount of R-454B refrigerant from the factory. These line sets eliminate the need for handling refrigerant or using a vacuum pump — making the installation safe and straightforward for handy homeowners.
For professional installation, HVAC technicians can install the system using traditional methods — including field-flared copper, custom line lengths, and on-site refrigerant charging, if desired. This is especially useful for custom applications or when the standard line set lengths don’t meet the project’s needs.
✅ Whether you’re going the DIY route or working with a licensed contractor, the system is built to support both installation methods effectively.