Greg Hartmann’s company, Hartmann Windows & Doors, has been setting the bar high for windows and doors in Guelph for nearly three decades. Since 1996, Greg has built a reputation for excellent customer service and meticulous attention to detail. His company’s commitment to excellence extends beyond its products to the installation crews, with a focus on cleanliness, customer comfort, and flawless installation.
With 30 years of experience, Greg offers expert advice on windows and doors, helping customers make informed decisions based on their needs, budget, and long-term plans. He recommends fibreglass doors for their superior durability and strength, while cautioning that triple-pane glass, although beneficial for insulation and noise reduction, adds significant weight and stress on hardware.
Hartmann Windows & Doors has earned the trust and loyalty of the Guelph community, recently being honoured with a GuelphToday Reader Favourite award. The company also gives back to the community, having made donations to local organizations such as the Guelph Humane Society and Guelph-Wellington Women in Crisis.
Greg’s dedication to quality and community is reflected in his company’s values and actions. As a self-described animal lover, Greg’s passion for supporting vulnerable causes is evident in his philanthropic efforts.



