Bakker's Power Washing
“He was quick to respond to messages, showed up on time and was very professional.”
Best Window Cleaners near St. Thomas, ON
2 of these companies are based in St. Thomas; the others serve St. Thomas from London (24 km).
8 open 24/7 · 14 open weekends · 14 rated 4.5+ · 2 show a licence
Data verified October 21, 2026
Pro-Touch Window Cleaning
“I've recommended him to friends without reservation and they've become regular clients too.”
Power Wash Master
“They did our hood system at cedar north restaurant, I use to use before steam canada, really big difference in service, very clean ,they are expert and knows exactly what they're doing, power wash master all the best.”
Bear Property Cleaning
“I had 3 windows in my town house that had decades of dirt and grim build up and Dan and John did an awesome job cleaning them.”
Celtic Property Cleaning
“They completed the job in a timely and professional manor and I couldn't be happier with the results.”
S&I Cleaning
“The customer service was AMAZING and they are so friendly and easy to deal with.”
Listed for homeowners in and around St. Thomas, ON, these 15 companies clean windows. Spring fills up fast here, so ask which weeks are still open and whether taking down and washing storm windows and screens is part of the price or an extra.
Area overview: St. Thomas, ON
The 15 companies on this page are rated from 4.0 to 5.0 across 568 reviews; 4 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (86%) and responsiveness (74%). The topics that come up most in reviews of the companies on this page are "price" and "efficient". 8 are open around the clock; 14 are open on Saturdays and 10 on Sundays. 2 show a licence on their websites. 2 have ten or more years of experience, the longest 16 years. 8 offer emergency call-outs; 11 give free estimates; 3 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 13 of the companies on this page; 9 publish a contact page; 13 list a public email and 1 takes bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
How many window cleaners are listed for St. Thomas?
This page shows 15 listings for St. Thomas. Because the work is sold as a repeat visit, ask each one which part of town it already covers and on what cycle. Slotting into an existing route usually costs less than a company driving out for a single house.
Ambassador Window Cleaners & More
“Jake did a great job and even let 2 senior ladies keep him amused during the process.”
A Plus Building Maintenance
“I have found them all to be caring and respectful in all of our dealings providing quality service at all times.”
Medclean Janitorial Services Inc- Commercial and Office Cleaning
“After a night of 1,000+ concert goers making a mess of the venue, the Medclean team have the place looking and smelling new again.”
Miral General Cleaning Inc.
“They cleaned Hood in a very systematic way by keeping safety in mind.”
Altitude Window Cleaning Inc.
“I have had the pleasure of working with Altitude for a number of years and have always been impressed with their professionalism and attention to the work.”
Kim's Cleaning Service
“I recommend this company for your cleaning office, always taking care of your place and trustful.”
Pane Management Windows and Eaves
“Paul provides excellent customer service, and great work at an affordable cost.”
Berts Window Cleaning
Squeeky Kleen Window Wash
Why these companies made our list
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