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Professional Commercial Janitorial Services in Mesa, AZ
Quality Environmental Management (QEM) has been a trusted provider of commercial janitorial services in the Phoenix metropolitan area since 1984. Founded by Gary and Christine Guerin, our family-run business combines three decades of industry expertise with personalized service to meet the unique needs of each client. We specialize in cleaning diverse facilities ranging from small offices to large industrial complexes, including medical facilities, tech companies, and educational institutions. Our team's experience includes managing high-profile projects for clients such as General Motors Proving Grounds and Boeing. Gary Guerin's background in medical housekeeping at institutions like Johns Hopkins Hospital informs our rigorous standards for healthcare facility cleaning.

Christine oversees all business operations, while our management team ensures flexible, responsive service plans tailored to client requirements. We prioritize building security, nightly supervision, and timely communication to guarantee client satisfaction. Our workforce is trained, uniformed, and committed to maintaining the highest cleanliness standards. With 24-hour coverage options and competitive pricing, we serve as a reliable partner for facility maintenance. Our green cleaning initiatives promote healthier work environments through eco-friendly products and procedures. QEM remains dedicated to innovation while upholding the personal service that has defined our success for over 30 years.
Services
Office Cleaning Medical Facility Cleaning Green Cleaning Carpet Cleaning Window Washing Construction Cleanup Floor Refinishing Retail Maintenance Clean Room Services Exterior Maintenance
Details
  • Year established: 1984
Highlights and features
  • 30 years of experience serving Phoenix area commercial facilities
  • Family-run business with personalized management approach
  • Trained and uniformed employees with nightly supervision
  • 24-hour coverage options for critical facilities
  • Competitive pricing with guaranteed satisfaction
Services
Medical Facility Cleaning
Specialized cleaning for hospitals, clinics, and medical offices using hospital-grade disinfectants and infection control protocols. Our team has experience in surgical centers and patient care facilities. We follow strict safety standards to maintain sterile environments for healthcare professionals and patients.
Green Cleaning
Sustainable cleaning solutions using microfiber systems, HEPA vacuums, and EPA-registered green chemicals. Reduces environmental impact while maintaining high cleanliness standards. Ideal for businesses seeking LEED certification or improved indoor air quality through non-toxic cleaning methods.
Office Cleaning
Daily maintenance services including restroom sanitation, floor care, trash removal, and kitchen cleaning for office spaces. Customizable plans for small businesses or large corporate complexes. Includes dusting, window washing, and carpet extraction to maintain professional work environments.
Construction Site Cleanup
Comprehensive cleaning of newly constructed or renovated spaces. Removes construction debris, dust, and residue from windows, floors, and surfaces. Prepares facilities for occupancy with attention to detail in both interior and exterior building components.
Clean Room Services
Precision cleaning for technology and manufacturing facilities requiring controlled environments. Specialized procedures maintain ISO standards in clean rooms through particle removal, static control, and contamination prevention techniques for sensitive equipment and production areas.
People
Gary Guerin
Founder
Gary Guerin founded QEM in 1984 after managing housekeeping operations at Johns Hopkins Hospital and Phoenix Baptist Hospital. His medical facility experience shapes our healthcare cleaning standards. He brings over 30 years of facility management expertise to client service delivery.
Christine Guerin
Business Owner
Christine Guerin co-founded QEM and oversees all business operations. With an education background, she manages financial and administrative aspects while maintaining the company's commitment to personalized client service since 1984.
Trent Guerin
Operations Manager
Trent Guerin, son of the founders, directs daily operations and customer service. He holds an MBA from Colorado State University and implements modern management practices while maintaining family business values since joining in 2010.
Questions
What types of facilities do you clean?
We service offices, medical facilities, industrial sites, tech companies, retail stores, banks, and educational institutions across the Phoenix area.
Are your cleaning staff trained and supervised?
Yes, all employees are trained, uniformed, and supervised nightly by quality control personnel to ensure consistent service standards.
Do you offer 24/7 cleaning services?
We provide 24-hour coverage options to accommodate facilities requiring after-hours cleaning or emergency maintenance services.
What green cleaning options are available?
Our eco-friendly services use microfiber systems, HEPA vacuums, and certified green chemicals to reduce environmental impact while maintaining cleanliness.
How are service plans customized?
Our management team creates tailored plans based on facility size, industry requirements, and specific client needs through direct consultation.
What quality guarantees do you offer?
We guarantee client satisfaction through nightly supervision, prompt issue resolution, and regular service quality assessments.