As the fueling infrastructure builds for CNG, the inconvenience of limited public fueling opportunities is softened by the availability of filling up at home. That's because Honda offers the Phill home refueling appliance, which was developed in conjunction with its Canadian technology partner Fuelmaker and is now manufactured by that company. Phill can be installed in a garage or outside a home to allow refueling using a home's natural gas supply. The refueling appliance does require as much as 16 hours to fill an almost empty tank, although it's likely that a natural gas vehicle refueled at home will rarely have an empty tank, and an overnight top-off will usually be sufficient for the daily commute. In many cases, vehicles fueled up at favorable natural gas home rates can operate as cheaply as the equivalent of $1.25 to $1.50 per gallon.