Enviro-Safe AC Performance Booster 4oz Aerosol Can for Auto A/C #2800a Description Enviro-Safe AC Performance Booster 4 oz can (formerly Air Enhancer) Part#: 2800a Aerosol Enviro-Safe AC Performance Booster is an air conditioning performance booster specially formulated treatment designed to enhance cooling properties of new and old air conditioning and refrigeration systems by reducing mechanical friction up to 1500%. AC Performance Booster contains a highly polar molecule that works synergistically with compressor oil to improve the performance of air conditioning and refrigeration systems by increasing heat transfer in the condenser and evaporator coils. The polarized molecule bonds to the metal inside the system by removing the insulated build-up of oil and forming a conductive layer to improve heat transfer. One can treats one system. Can be used in R12, R134a, R22, R502, R290, R600a systems. DO NOT use in ammonia systems DO NOT use in CO2 systems DO NOT use in R410a systems- Pressure is too high and will explode the can Cannot be sent to Alaska or Hawaii or exported to foreign countries except in pallet quantities Gas propelled Installs the same way as refrigerant Cannot be added to a fully charged system Payment Shipping Returns Payment is required at the time of purchase through payments. We ship Monday-Friday 8am-4pm. We try our best to get every order shipped the same day. We ship with Fedex Ground, UPS Ground, USPS First Class and USPS Priority. If you need faster shipping, we are able to ship certain items via air. Of course, that cost is much higher and you would need to call for a shipping quote. We do combine shipping whenever possible. A tracking number will be provided at the time of shipment. Dates we are closed that would affect handling times: New Years Eve, New Years Day, Good Friday, Memorial Day, July 4th, Labor Day, Thanksgiving, Black Friday, Christmas Eve and Christmas Day. These days will extend our handling time by 1 or 2 days. Please keep in mind that we have ZERO control over USPS/Fedex/UPS and their timeliness in delivering your package! Please don't leave negative feedback for something that is beyond our control. Buyer has 30 days to contact Enviro-Safe regarding any issues or to request a return. The item will be replaced or the buyers money refunded AFTER Enviro-Safe receives the item back in the same condition that is was shipped. If the buyer requests the return and there is nothing wrong with the item, the buyer is responsible for the return shipping and will not be refunded for the original shipping. If the item is defective, Enviro-Safe will supply a label for return and will refund or replace in full. Note: hazmat shipments can not be returned. (description exceeds maximum possible length)