Rosanna Heating and Cooling Group (WHM Air) is one of Melbourne’s oldest and most trusted heating and air conditioning companies of the northern suburbs of Melbourne, specialised in providing quality installations, systems maintenance, repair and replacement of units, and after-sales assistance of both residential and commercial heating and cooling systems. We do split system installation near you, gas ducted heating and cooling systems, reverse cycle air conditioning, working with: Braemar, Breezair, Brivis, Climate Wizard, Convair, Coolair, Daikin, Mitsubishi Electric, Rinnai, Actron Air. We serve Alphington, Coburg, Doreen, Preston, Balwyn, Brain Hill, Bundoora, Diamond Creek, Doncaster, Fairfield, Greensborough, Heidelberg, Bellfield, Bullen, Eaglemont, Eltham, Ivanhoe, Kew, Lower Plenty, Templestowe, Yallambie, Kingsbury, Macleod, Mill Park, Montmorency, Northcote, South Morang, Viewbank, Watsonia, Broadmeadows, Epping, Research, Reservoir, Box Hill, Brunswick, Donvale, Thornbury