GDI Ainsworth delivers reliable commercial cleaning and facility maintenance services for businesses in Manchester and South-Central New Hampshire.

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Our janitorial services in Manchester are structured around reliability, providing thorough daily cleaning that keeps every facility inspection-ready and consistently maintained.
We build flexible office cleaning programs that fit your workflow, ensuring neat, hygienic spaces that foster productivity and professionalism.
Our floor and carpet cleaning programs protect and enhance surfaces through deep extraction, refinishing, and ongoing maintenance tailored to your facility.
We use hospital-grade disinfection protocols and touchpoint-focused methods to reduce germs and maintain healthier environments for employees and guests.
Our professional window washing and building maintenance keeps properties in Manchester bright, safe, and professional, no matter the season.
Align cleaning and maintenance under one trusted partner with our Integrated Facility Services, improving communication, efficiency, and overall performance.
With a century of experience, we understand what it takes to maintain operational excellence. In Manchester, our focus on consistency, safety, and measurable quality ensures your facility performs at its best every day.
We design maintenance programs that align with your operational goals, from efficiency to safety and long-term reliability. Contact us today to customize cleaning and maintenance solutions for your Manchester and South-Central New Hampshire facilities.
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Local Experts
Regional Experts
A century of experience
A future of innovation
GDI's Story Begins
Robertson Janitorial Ltd. began as a small, reliable cleaning service supporting Quebec City’s growing economic landscape. With a focus on consistency and care, the company steadily grew.
Ainsworth is Founded
Brothers F.C. and C.J. Ainsworth establish an electrical services company that grows into a technical services leader.
Two Leaders Join Forces
GDI acquires Ainsworth, bringing facility and technical services together in one North American organization.