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Trusted HVAC/R Services in Mattapoisett, MA
DG Service Company has been providing comprehensive HVAC/R services to residential, commercial, and industrial clients for over 25 years. Our mission centers on maintaining customer comfort across all seasons while safeguarding their investments in heating, air conditioning, and refrigeration systems through expert repair and installation services. Our team of experienced technicians delivers end-to-end solutions, seamlessly integrating design, installation, maintenance, and repair processes. Accredited by the Better Business Bureau since 2008, we serve diverse sectors including healthcare, education, retail, and public safety. Our 24/7 emergency service ensures prompt assistance for critical HVAC/R needs across Bristol, Plymouth, and Barnstable Counties. We specialize in energy-efficient heating options like heat pumps and radiant systems, ductless air conditioning solutions, and commercial refrigeration upgrades.

Our indoor air quality (IAQ) installations utilize proven technology to eliminate bacteria, viruses, and mold, enhancing occupant health. With dedicated maintenance programs for both residential and commercial clients, we prioritize preventive care to minimize operating costs and equipment failures. Our client roster includes real estate management companies, building contractors, and food service establishments, reflecting our commitment to tailored, reliable service. Through continuous technical training and adherence to industry best practices, we maintain our reputation as a trusted leader in HVAC/R systems management.
Services
Heating Installation Air Conditioning Commercial Refrigeration Ventilation Systems Indoor Air Quality Maintenance Programs Emergency Repairs
Highlights and features
  • 24/7 emergency service with rapid response times
  • Technicians certified in all HVAC/R system phases
  • BBB-accredited since 2008 with proven reliability
  • Specialized IAQ solutions eliminating 99% of pathogens
  • Energy-efficient system upgrades reducing operating costs
Associations and certifications
  • Better Business Bureau
What people say
Very professional Pleasure to have service Wouldn't trust anyone else Always helpful technicians Prompt service during heatwaves
Services
Heating Installation
We design and install energy-efficient heating systems including heat pumps, radiant heating, and high-efficiency boilers. Our technicians work with natural gas, propane, and oil systems, ensuring optimal performance for residential and commercial properties. Custom solutions maximize comfort while reducing energy consumption.
Air Conditioning
Our AC services include ductless system installations, central air conditioning, and maintenance programs. We optimize cooling efficiency through proper system sizing, ductwork analysis, and refrigerant management. Commercial clients benefit from customized climate control solutions for various facility types.
Commercial Refrigeration
Specializing in walk-in coolers, freezers, and commercial refrigeration units, we implement energy-saving upgrades using modern compressors and defrost controls. Our maintenance contracts prevent equipment failure and protect perishable inventory for grocery stores and restaurants.
Indoor Air Quality
We install advanced air purification systems that eliminate 99% of airborne pathogens using oxidant technology. Our solutions address mold, bacteria, and allergens, improving respiratory health in residential and commercial environments through ductwork-integrated purification units.
Emergency Repairs
Available 24 hours daily, our trained technicians handle urgent HVAC/R issues with rapid response times. We maintain equipment functionality during critical temperature conditions, minimizing downtime for residential and commercial clients through immediate diagnostic and repair services.
People
Grace Knox
President
Leading DG Service Company since its founding, Grace Knox oversees strategic operations and client relations. With decades of HVAC/R industry experience, she ensures technical excellence and customer satisfaction across all service divisions.
Dan Deame
Vice President / Service
Dan Deame manages service operations and technician training programs. His technical expertise in HVAC/R systems ensures adherence to industry standards while maintaining the company's 24/7 emergency service capabilities.
Penny Cole
Service & Contracts Administrator
Penny Cole coordinates service scheduling and contract management. She ensures seamless client communication and administrative support for DG's residential and commercial maintenance programs.
Janis Sirois
Billing / Office Manager
Janis Sirois oversees financial operations and office management. Her administrative leadership maintains efficient billing processes and client account management for DG Service Company's diverse customer base.
Audrey Knox
Accounts Receivable
Audrey Knox manages accounts receivable operations, ensuring accurate financial record-keeping and timely payment processing. Her financial expertise supports the company's operational stability and client billing transparency.
Questions
What HVAC/R services does DG Service Company Company offer?
We provide complete HVAC/R solutions including system design, installation, maintenance, and 24/7 emergency repairs for residential, commercial, and industrial clients.
Do you offer emergency HVAC/R services?
Yes, our 24/7 emergency service line (508-999-3882) connects you with trained technicians for urgent heating, cooling, and refrigeration issues.
Which areas do you serve?
We serve residential and commercial clients throughout Bristol, Plymouth, and Barnstable Counties in Southeastern Massachusetts.
Are your technicians certified?
All our technicians receive ongoing training in HVAC/R systems, with expertise in installation, maintenance, and repair of all major equipment types.
Do you have maintenance programs available?
Yes, we offer customized maintenance contracts for residential and commercial clients to ensure system efficiency and prevent unexpected breakdowns.
What IAQ solutions do you install?
We install RGF Environmental Group's air purification systems that eliminate 99% of viruses, bacteria, and mold using advanced oxidant technology.
Reviews (1)
David W. Dunn
Jun 01, 2015 Report
DG Services have completed 2 major installations for me and many service runs. They are fast, dependable and courteous.