Inspirit Energy Holdings plc, formerly KleenAir Systems International plc, is a United Kingdom-based company, which is engaged in developing and commercializing the micro combined heat and power (mCHP) boiler for use in commercial and residential markets. The Company's mCHP boiler is powered by natural gas and designed to produce hot water and an electrical output that can be used locally or fed back into the National Grid. Its mCHP boiler generates approximately 10 kilowatts of thermal output and approximately three kilowatts of electrical output. The boiler is designed for reduced carbon energy supply and is capable of running on natural gas, liquefied petroleum gas (LPG) and bio fuels. The Company offers Inspirit Charger, which is a floor-standing appliance suitable for installation in a plant room, garage or utility room. Inspirit Energy Limited, which is engaged in product development, is a subsidiary of the Company.