This is a graded product. A3 products have moderate exterior damage. All products are tested and are in good working order. GRADE A3 . Unico air conditioning units have been designed specifically to eliminate the need of outdoor condensing unit reducing both installation costs and time.Unico Air is the newest member of the Unico family bringing a brand new sleek design and reduced unit dimensions. Unico Air also boasts reduced noise levels thanks to the use of absorbing materials around the motor and compact compressorFeatures Wall mounted with no outdoor unit only two air vents are visible from outsideRound the year use cooling in summer and efficient heating in winter to replace central heating and radiatorGreat for conservation areas high rise buildings or where outdoor install space is difficult to accessQuiet and efficient space saving slimmer than a split air con indoor unitNo need to be installed by an air con engineer No annual service required washable filtersModern look complimenting any designSleek and compact design Just 16cm thickness7000 BTU (1.8 kW) cooling capacity suitable for rooms up to 22 sqmChoice of high or low wall installations perfect for domestic or office useDimensions HxWxD 49.1×97.8x16cm . What is a BTU?. . 1 BTU is the amount of heat required to raise the temperature of one pound of liquid water by one degree from 60 to 61 Fahrenheit at a constant pressure of one atmosphere. As a general rule we advise you to buy an Air Conditioner with a minimum 3000BTUs as this is the minimum required to cool a small room (10sq/m) on a hot day. Medium rooms (24sq/m) need around 10000BTUs and larger rooms and office spaces (36sq/m) require around 15000BTUs..