The 18000 btu quick coupling wall mounted air conditioner unit provides cooling and heating, for year round climate control. Features include led display, auto-restart function, sleed mode and active carbon filter. Please note : the interior unit should be combined with eh1298 (18000 btu exterior unit) to create a 18000 btu split air conditioning unit. Note : from 4th july 2011, this product must be installed by a 'qualified person'. cooling and heatingauto-restart functionled displaysleep modea energy ratingdimensions (mm)27. 5x94x19. 8cmcooling capacity (kw)5cooling capacity(btu/h)17000heating capacity(kw)5. 3heating capacity(btu/h)18000control panelelectronicnoise level db(a)44/41/34energy ratingcinput power ~ cool (w)1700input power ~ heat (w)1640voltage (v)220-240frequency (hz)50net weight (kg)10gross weight (kg)13indoor product dimensions (hxwxd cm)27. 5x94x19. 8outdoor product dimensions (hxwxd cm)59x76x28. 5