A dispenser for heating a liquid in and dispensing a foam introduced from a canister. The dispenser has a heater for providing heat to the foam/liquid, a chamber with an inlet port and an outlet port and a base having an aperture and a first member. The chamber is in contact with the heater, and the outlet port is connected to a nozzle. The nozzle dispenses the heated foam. The dispenser also has a base adjoining. The first member is slidably retained over the aperture to adjust a size of the aperture and to receive a number of different diameter canisters.