3 Best Window Cleaners in Markham, ON

“Sunset Window Cleaning uses the latest innovative equipment, clean, uniform techs, and an electronic administration system. They pride themselves on keeping their business professional and modern. Sunset Window Cleaning offers luxury, premium window cleaning to all their clients. They also carry $5 million in Liability Insurance. They take pride in their detailed and professional workmanship, and it shows. When they have finished your service, they ensure that you are happy with the work before they leave. They treat every home as they would their own when they clean your windows. They offer a free quote to their customers. Sunset Window Cleaning is a local and family-owned company which offers honest, reliable, and prompt cleaning services for their customers.”

“2026 Highlights: DT Cleaning Markham brings more than 10 years of professional cleaning experience. The company provides residential and commercial window cleaning services, including interior and exterior window cleaning and post-construction cleaning. Their professional technicians are Working at Heights certified and complete a two-month in-house training program. DT Cleaning uses purified water, biodegradable Soft-Wash solutions, commercial-grade equipment, and water-fed telescopic poles for upper-floor windows. The company provides flat-rate quotes with no hidden fees and offers flexible morning, evening, and Saturday appointments. They also provides a 48-hour streak guarantee, returning at no charge if streaks are noticed. DT Cleaning is covered by $2 million in Commercial General Liability insurance and full WSIB coverage. ”