Keeping your New Hampshire business spotless!

Full Service Janitorial and Office Cleaning Company

We work with facilities and businesses of all sizes in New Hampshire and Massachusetts. Give us a call so we can devise a plan to meet expectations and budget. Our quality of service delivered is consistent week after week!

We clean over

SQUARE FEET of office space EVERYDAY!

Unmatched Commercial Cleaning Services

Steri Clean provides fast, efficient cleaning for any sort of client. If you need great janitorial services, you’re in the right place.

Get in touch with us for a free consultation and quote. Once you tell us the size of your job, whether it’s a one-off or routine cleaning arrangement, and what your budget is, we’ll craft the perfect plan for you.


Areas We Serve:

  • Nashua, NH
  • Hillsborough County, NH
  • Manchester, NH
  • Concord, NH
  • Merrimack County, NH
  • Essex County, MA
  • Middlesex County, MA
  • Rockingham County, NH


Commercial Cleaning

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Speciality and Specific Application Cleaning Services

Our teams are also highly experienced in specialized areas of cleaning. Different areas of the manufacturing industry have varyingly strict regulations for sanitation, for instance, and we’re deeply familiar with such requirements. The more complicated and rigorous cleaning you need, the greater the effort we put forward in making sure that your workers and the consumers of your product can count on cleanliness and safety.

When you’re looking for cleaning services nearby, you can consider Steri Clean to meet janitorial needs including, but not limited to:

  • Cleaning and sanitizing restrooms
  • Office cleaning
  • Apartment buildings
  • Medical offices
  • Manufacturing facilities
  • Utility companies
  • Carpet cleaning
  • Common Area
  • State agencies
  • Municipal buildings
  • Stripping & Waxing VCT flooring

Happy Clients 

I have been using Steri Clean for a few years for my hair salon floors and I have always been satisfied with the work that was done. Highly recommend checking them out.


Hair Salon Owner

OUR news

The Janitors Closet

The Janitors Closet, where you will find resources and tips for Property Managers, Facility Managers and Business Owners.  From cleaning and maintenance tips to products and know how, Steri Clean is here as your trusted partner. If you have any questions or would like to request a FREE site assessment call our office at 603-505-7456.

Cleaning Service for a Medical Office

Cleaning Service for a Medical Office

Around our office you will often hear us say if it’s not Steri Clean, it’s not really clean. While we often say it in jest, it was born...