Enviro Window Clean is owner operated and offers a reliable, professional residential and commercial window and exterior building cleaning service from Selwyn to Christchurch to North Canterbury. AND ITS ALL CHEMICAL FREE!! We want our customers to be more than happy with our service, we want them to be delighted with it! Our product and service is environmentally friendly and uses no chemicals. Minerals and chemicals are removed from the water. Because of this you will have no water stains or streaks.