A mini split system must be installed by a licensed HVAC (Heating, ventilating, & air conditioning) company to ensure any issues encountered in the future are not due to improper installation / workmanship. Even though mini split setup is below the expertise requirements of central AC systems, these are not “plug-n-play” units that can be properly installed without certain tools any prior HVAC – electrical knowledge. The installation includes electrical, gas, and refrigerant connections and generally regulated by a multiple sets of laws, codes and guidelines, at the federal, state and local levels. The failure to properly install HVAC equipment can raise personal safety and performance concerns. Warranty service – troubleshooting is provided through the contractor / installer and will be upheld as long as policies within Warranty spreadsheet are observed. Once a non-defective unit is installed by a HVAC company, chances of anything going wrong are very slim and almost all contractors will guarantee there workmanship and provide future service free of charge (installation warranty). If it was determined that the unit is not functioning due to a defect and needs to be replaced, the part will be sent free of charge. If you receive a damaged or defective product, a replacement unit will be sent out Free of cost. Damaged/Defective product will be picked up and a brand new exchange will be shipped out.