The HVAC industry in Maine focuses on heating, ventilation, and air conditioning solutions, ensuring both comfort and energy efficiency. It includes a mix of contractors, suppliers, and manufacturers offering services like installation, repair, and maintenance for both residential and commercial clients. With increasing demand for energy-efficient systems and sustainable practices, companies are innovating to meet new standards and customer expectations. Emerging trends point to a growing interest in environmentally friendly technologies, such as heat pumps, which hold the potential to reduce costs and increase efficiency across varied applications. This evolution reflects the changing focus of the industry toward sustainability.

The list features 19 HVAC companies based in Maine, varying in size from small family-owned businesses to medium firms with hundreds of employees. Companies like Mechanical Services, Inc. and Johnson & Jordan operate across multiple sectors, demonstrating a strong presence in residential and commercial services. Founded between 1914 and 2007, these firms offer a range of specialties from mechanical contracting to innovative engineering. Maine's HVAC sector showcases a blend of tradition and modern practices, underscoring a commitment to quality service and technology integration.

Continue reading to discover the top HVAC companies in Maine.

Top 19 HVAC Companies Companies in Maine

1. Mechanical Services, Inc./ Maine Controls

• Website: mechanicalservices.com
• Ownership type: Private
• Headquarters: Portland, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1957
• Headcount: 51-200
• LinkedIn: mechanical-services-inc.

Mechanical Services, Inc./ Maine Controls, based in Portland, Maine, is a full-service HVAC contractor with a history dating back to 1957. The company specializes in heating, ventilation, air conditioning, and refrigeration services, offering a wide array of solutions tailored to meet the needs of various sectors such as government, education, and commercial enterprises. Their services include design/build projects, project management, and preventive maintenance, all aimed at ensuring energy efficiency and compliance with industry standards. With a team of skilled professionals, Mechanical Services is adept at addressing complex HVAC challenges, making them a reliable partner for clients in Maine, New Hampshire, and Vermont. The company also emphasizes environmentally conscious energy solutions, showcasing their commitment to sustainability in the HVAC field. Their operations are supported by in-house engineering services, allowing for a seamless integration of design and implementation processes.

2. Atlantic Comfort Systems, INC.

• Website: atlanticcomfort.com
• Ownership type: Private
• Headquarters: Biddeford, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1991
• Headcount: 11-50
• LinkedIn: atlantic-comfort-systems-inc.

Atlantic Comfort Systems, INC. is a mechanical contractor based in Biddeford, Maine, specializing in heating, air conditioning, refrigeration, plumbing, and controls. Founded in 1991, the company has built a strong reputation for providing installation, maintenance, and repair services to a variety of clients, including residential homeowners, commercial businesses, and industrial facilities across Maine and New Hampshire. With a workforce of 11 to 50 employees, Atlantic Comfort Systems has developed a robust portfolio of projects, collaborating with notable builders and contractors in the region. Their commitment to quality service is evident in their motto, 'Service with Integrity,' and they have established a dedicated service division to ensure customer satisfaction. The company has also expanded its capabilities by forming a controls division, ACS Controls, which enhances their service offerings. Atlantic Comfort Systems is a certified dealer for several prominent HVAC brands, allowing them to provide tailored solutions to meet their clients' needs.

3. Aero Heating & Ventilating, Inc.

• Website: aero-hv.com
• Ownership type: Private
• Headquarters: Westbrook, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1990
• Headcount: 51-200
• LinkedIn: aero-heating-%26-ventilating-inc-

Aero Heating & Ventilating, Inc., based in Westbrook, Maine, has been a prominent player in the HVAC industry since its inception in 1990. The company specializes in ductwork design, fabrication, and installation, primarily serving commercial and industrial clients. With a workforce of 51-200 employees, Aero has built a reputation for delivering high-quality heating and ventilation solutions tailored to the needs of various sectors, including healthcare and education. Their projects range from hospitals and medical facilities to educational institutions and corporate offices, showcasing their capability to handle complex installations. In 2017, Aero transitioned to an employee-owned structure, which has likely enhanced employee engagement and investment in the company's success. Their modern fabrication facility in Westbrook allows them to innovate and expand their service offerings, ensuring they remain competitive in the HVAC market. Aero's commitment to quality and customer satisfaction is reflected in their extensive project portfolio, which highlights their expertise and reliability in the HVAC sector.

4. Abm Mechanical, INC.

• Website: abmmechanical.com
• Ownership type: Private
• Headquarters: Bangor, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1995
• Headcount: 51-200
• LinkedIn: abm-mechanical-inc.

ABM Mechanical, INC. is a mechanical contracting firm based in Bangor, Maine, with additional offices in Westbrook and Hancock. Established in 1995, the company specializes in HVAC systems, plumbing, electrical services, and medical gas installations. They cater primarily to commercial clients, including healthcare facilities, educational institutions, and government entities. ABM Mechanical provides a full suite of services, from pre-construction and design to installation and ongoing maintenance. Their expertise extends to advanced systems such as geothermal and solid fuel heating, showcasing their adaptability to various client needs. The company employs a team of trained professionals dedicated to ensuring efficient operation and compliance with industry standards. With a focus on quality and customer satisfaction, ABM Mechanical has built a solid reputation in the mechanical contracting sector.

5. Haley's Metal Shop, Inc.

• Website: haleysmetal.com
• Ownership type: Family Owned
• Headquarters: Biddeford, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1917
• Headcount: 11-50
• LinkedIn: haleys-metal-shop-inc-

Haley's Metal Shop, Inc., based in Biddeford, Maine, is a family-owned HVAC contractor that has been serving the community since 1917. With a workforce of 11 to 50 employees, the company has built a reputation for providing high-quality heating, ventilation, and air conditioning services. Their offerings include heat pump installations, boiler services, and solutions aimed at improving indoor air quality. They cater to a wide range of clients, from residential homeowners to commercial businesses, ensuring efficient climate control solutions tailored to specific needs. As a Mitsubishi Electric Elite Diamond Contractor, Haley's Metal Shop demonstrates a commitment to excellence in service and product quality. Their long history in the industry, combined with a focus on customer satisfaction and energy efficiency, underscores their relevance in the HVAC market.

6. Thayer, LLC

• Website: thayercorp.com
• Ownership type: Family Owned
• Headquarters: Auburn, Maine, United States (USA)
• Founded year: 1981
• Headcount: 51-200
• LinkedIn: thayer-corporation

Thayer, LLC is a family-owned company based in Auburn, Maine, specializing in HVAC/R and plumbing solutions since its inception in 1981. With a workforce of approximately 56 employees, Thayer has built a reputation for providing high-quality services tailored to commercial, industrial, and institutional clients across Maine and New Hampshire. The company offers a wide array of services, including equipment installation, maintenance, and repair, ensuring that their clients' mechanical systems operate efficiently and effectively. Thayer is also committed to incorporating sustainable technologies into their projects, such as biomass, thermal, solar, and geothermal systems, reflecting a modern approach to HVAC solutions. Their professional team includes certified technicians and engineers, ensuring that they meet the diverse needs of their clientele. Thayer, LLC has not reported any funding, indicating a self-sustaining business model that has thrived for over four decades in a competitive industry.

7. Airtemp, Inc.

• Website: airtempmaine.com
• Ownership type: Private
• Headquarters: Westbrook, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1990
• Headcount: 51-200
• LinkedIn: airtemp-inc

Airtemp, Inc., based in Westbrook, Maine, is a mechanical contracting firm that has been active in the HVAC, plumbing, and electrical services sector since its inception in 1990. The company offers a comprehensive suite of services, including installation, maintenance, and retrofitting of mechanical systems. They cater to a wide array of clients, including educational institutions, healthcare facilities, and commercial enterprises, ensuring that their solutions meet the specific needs of each sector. Airtemp emphasizes energy efficiency and operational reliability, which are critical in today's market where sustainability is increasingly prioritized. Their expertise extends to building automation and energy services, allowing them to provide innovative solutions that help clients optimize their facilities. As a subsidiary of Comfort Systems USA, Airtemp benefits from a national network that enhances its service capabilities and technical proficiency. This affiliation also positions them well within the industry, allowing for shared best practices and resources.

8. Johnson & Jordan, Inc

• Website: johnsonandjordan.com
• Ownership type: Private
• Headquarters: Scarborough, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1991
• Headcount: 201-500
• LinkedIn: johnson%26jordaninc

Johnson & Jordan, Inc. is a mechanical contracting firm based in Scarborough, Maine, founded in 1991. The company specializes in HVAC, plumbing, electrical, and irrigation services, primarily serving the commercial, healthcare, and educational sectors. With a workforce of over 250 employee-owners, Johnson & Jordan emphasizes exceptional service and customer satisfaction. Their in-house engineering capabilities enhance their service offerings, allowing them to provide tailored solutions to meet client needs. The company has built a reputation for quality work and reliability, which is reflected in their extensive portfolio of projects, including notable institutions like Bates College and Maine Medical Center. Johnson & Jordan is committed to maintaining high standards in safety and service, ensuring that their clients receive the best value and support for their mechanical systems.

9. Damon Mechanical

• Website: damonmechanical.com
• Ownership type: Family Owned
• Headquarters: Auburn, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1952
• Headcount: 11-50
• LinkedIn: damon-mechanical

Damon Mechanical, based in Auburn, Maine, is a family-owned mechanical contractor that specializes in plumbing, HVAC, refrigeration, and solar water heating services. Founded in 1952, the company has built a solid reputation over the decades, focusing on commercial and industrial clients. They employ a design/build approach, which allows them to tailor mechanical systems to meet specific project goals while considering budget and timeline constraints. Damon Mechanical is known for its 24/7 service support, ensuring that clients receive timely assistance whenever needed. Their team is equipped with state certifications, ensuring compliance and quality in service delivery. The company has been involved in various notable projects, including installations for housing complexes, educational institutions, and government facilities, demonstrating their capability to handle complex mechanical systems. With a workforce of 11-50 employees, Damon Mechanical continues to be an active player in the HVAC industry, contributing to the efficiency and sustainability of mechanical systems in their region.

10. AAA Energy Service Co

• Website: aaaenergy.com
• Ownership type: Family Owned
• Headquarters: Scarborough, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1948
• Headcount: 11-50
• LinkedIn: aaa-energy-service-co

AAA Energy Service Co, based in Scarborough, Maine, is a family-owned mechanical contractor that has been operational since 1948. The company specializes in HVAC, refrigeration, electrical, plumbing, and building automation services. With a workforce of 37 employees, AAA Energy caters to commercial, industrial, and institutional clients, focusing on enhancing operational efficiency and comfort. Their extensive experience of over 75 years in the industry allows them to provide tailored solutions and maintenance plans that meet the unique needs of their customers. The company prides itself on delivering high-quality service and has built a reputation for reliability and expertise in HVAC and related services.

11. W.H. Demmons, Inc.

• Website: whdemmons.com
• Ownership type: Private
• Headquarters: Portland, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1914
• Headcount: 11-50
• LinkedIn: w.h.-demmons-inc.

W.H. Demmons, Inc., based in Portland, Maine, has been a significant player in the HVAC industry since its inception in 1914. Initially focused on roofing, the company expanded its services to include HVAC and engineering solutions through a merger with Maine Air Conditioning in 1994. This strategic move allowed W.H. Demmons to enhance its capabilities in designing and implementing energy-efficient HVAC systems, including geothermal solutions. The company serves a wide range of clients, from residential homeowners to large industrial facilities, and is dedicated to improving indoor air quality and energy efficiency. Their expertise extends to building automation systems, which enable clients to monitor and control their HVAC systems remotely. W.H. Demmons prides itself on its commitment to safety and employee training, ensuring that its team remains knowledgeable about the latest technologies and practices in the industry. With a focus on customized solutions and a strong track record of successful projects, W.H. Demmons continues to be a relevant and active participant in the HVAC market.

12. Daigle Oil Company

• Website: daigleoil.com
• Ownership type: Private
• Headquarters: Fort Kent, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1955
• Headcount: 11-50
• LinkedIn: daigle-oil-company

Daigle Oil Company, established in 1955 and based in Fort Kent, Maine, operates as a fuel service and home comfort provider. The company specializes in delivering heating fuels and offers a range of heating and cooling equipment, including boilers, furnaces, air conditioning systems, and heat pumps. They also provide maintenance services to ensure the efficiency and longevity of these systems. Serving both residential and commercial clients, Daigle Oil Company has built a reputation for reliability in Northern and Central Maine. Their employee-owned model, adopted in 2015, emphasizes a commitment to customer service and community engagement. The company also offers various payment plans and home comfort plans, which further enhance their service offerings in the HVAC sector.

13. LaPlante Electric

• Website: laplanteelectric.com
• Ownership type: Family Owned
• Headquarters: Scarborough, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1989
• Headcount: 11-50
• LinkedIn: laplante-electric

LaPlante Electric, founded in 1989 and based in Scarborough, Maine, is a family-owned home services company that specializes in electrical work, generator installations, plumbing, heating, and solar energy solutions. With a workforce of 11 to 50 employees, they cater to both residential and commercial clients, providing essential services for maintenance, installation, and emergency repairs. Their HVAC offerings prominently feature heat pump installations, which are increasingly relevant in today's energy-conscious market. The company prides itself on delivering high-quality service, as reflected in their impressive Google rating of 4.9 based on nearly 1,000 reviews. LaPlante Electric operates primarily in Maine and New Hampshire, establishing a strong local presence and commitment to customer satisfaction.

14. New England Tech Air Inc

• Website: netechair.com
• Ownership type: Private
• Headquarters: Scarborough, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 51-200
• LinkedIn: new-england-tech-air-inc

New England Tech Air Inc, based in Scarborough, Maine, has been a significant player in the HVAC industry since its inception in 1986. The company specializes in HVAC services, particularly in duct fabrication and installation, catering to a variety of sectors including healthcare, education, and government. With a workforce of 51-200 employees, Tech Air has built a reputation for delivering custom solutions tailored to complex environments. Their operations prioritize safety and compliance, ensuring that all projects meet necessary standards. Tech Air employs advanced technologies such as Building Information Modeling (BIM) to enhance project execution, demonstrating their commitment to innovation. The company has successfully completed numerous projects, including those for hospitals, universities, and government facilities, showcasing their ability to manage logistically challenging and technically demanding assignments. Their focus on quality and customer satisfaction has allowed them to maintain a strong presence in the HVAC market for over 35 years.

15. Wilson 5 Service Company

• Website: wilsonfive.com
• Ownership type: Private
• Headquarters: Kittery, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1982
• Headcount: 1-10
• LinkedIn: wilson-5-service-company

Wilson 5 Service Company, Inc., established in 1982, operates out of Kittery, Maine, and specializes in facility management services. The company provides a wide array of operations services, including mechanical maintenance, HVAC maintenance and repair, and janitorial services. With a commitment to cost-effective and energy-efficient solutions, Wilson 5 serves a variety of clients, including government agencies, commercial businesses, and military organizations. They have built a reputation for quality service and reliability, managing contracts that range from small facilities to large operations spanning millions of square feet. As a service-disabled veteran-owned small business, they emphasize a customized approach to meet the specific needs of their clients, ensuring that their services are tailored and effective. Wilson 5 is also recognized for its commitment to energy conservation and safety programs, which are integral to their operational philosophy.

16. Dan Davis Sales Inc

• Website: dandavissales.com
• Ownership type: Family Owned
• Headquarters: Lebanon, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1976
• Headcount: 11-50
• LinkedIn: dan-davis-sales

Dan Davis Sales Inc, founded in 1976 and based in Lebanon, Maine, is a family-owned business that operates as a manufacturers representative. The company specializes in plumbing, heating, and renewable energy products, serving wholesalers, contractors, and engineers primarily in the New England region. With a team of 16 employees, Dan Davis Sales has built a reputation for providing high-quality solutions and exceptional customer service. They represent a range of manufacturers, ensuring that their clients have access to reliable products for both residential and commercial projects. Their commitment to service extends beyond the sale, offering training and technical support to ensure successful project completion. Dan Davis Sales is also a member of the American Supply Association, further solidifying their involvement in the industry.

17. Maritime Energy

• Website: maritimeenergy.com
• Ownership type: Corporate
• Headquarters: Rockland, Maine, United States (USA)
• Employee distribution: United States (USA) 88%, Singapore 12%
• Latest funding: December 2022
• Founded year: 1939
• Headcount: 51-200
• LinkedIn: maritime-energy

Maritime Energy, based in Rockland, Maine, has been a significant player in the heating oil and propane supply industry since its founding in 1939. The company specializes in providing reliable fuel delivery services, heating system installations, and plumbing solutions to both residential and commercial clients. Their service portfolio includes the installation and maintenance of various heating systems, including oil and propane furnaces, boilers, and heat pumps. Maritime Energy also emphasizes customer satisfaction, offering comprehensive service plans that ensure timely maintenance and emergency support. With a workforce of approximately 52 employees, the company has established a strong local presence and is dedicated to meeting the heating needs of its community, particularly during the harsh winter months. Maritime Energy's focus on quality service and customer care positions it as a relevant entity in the HVAC industry.

18. P Gagnon & Son, INC.

• Website: pgagnon.com
• Ownership type: Family Owned
• Headquarters: South Berwick, Maine, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1904
• Headcount: 11-50
• LinkedIn: p-gagnon-%26-son-inc.

P Gagnon & Son, INC. is a family-owned company based in South Berwick, Maine, with a rich history dating back to 1904. The company specializes in the supply of heating oil and propane, catering to both residential and commercial clients in Southern Maine and Seacoast New Hampshire. They pride themselves on providing reliable fuel delivery and maintenance services, ensuring customer comfort throughout the year. In addition to fuel supply, P Gagnon & Son offers equipment installation services, including furnaces, boilers, and water heaters. Their experienced technicians bring a combined 250 years of expertise in the field, which enhances their service quality. The company also emphasizes customer satisfaction through various service plans and guarantees, reflecting their commitment to maintaining a high standard of service. While they have not reported any funding, their longevity and established customer base suggest a stable presence in the industry.

19. APEX Engineering

• Website: apexengineering.com
• Ownership type: Private
• Headquarters: Yarmouth, Maine, United States (USA)
• Employee distribution: United States (USA) 76%, New Zealand 24%
• Founded year: 2007
• Headcount: 1-10
• LinkedIn: apex-engineer-inc

APEX Engineering, founded in 2007 and based in Yarmouth, Maine, is a private engineering firm that provides innovative design and consulting services across multiple sectors. The company specializes in mechanical and process engineering, electrical engineering, and notably, HVAC and plumbing engineering. APEX Engineering is dedicated to delivering high-quality results while fostering long-term relationships with clients in both the public and private sectors. Their projects often involve complex engineering solutions, particularly in the health and science, government, and energy sectors. APEX is also a veteran-owned small business, which adds a unique perspective to their operations. They have been involved in numerous renewable energy projects, showcasing their commitment to sustainability. The firm operates in over 25 states and employs a small team of engineers and designers who collaborate closely to ensure effective project execution.

HVAC Companies Insights: Key Companies in Maine

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