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50+ Years
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Emergency
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Trusted Commercial HVAC & Construction Services in New Hampshire
Eckhardt & Johnson has been a family-owned and operated mechanical contracting firm since 1917, rooted in New Hampshire and dedicated to delivering exceptional commercial HVAC, plumbing, and construction services. Our century-long legacy is built on core values of quality, dependability, and trust, which guide every project we undertake. By maintaining extensive in-house capabilities, we ensure precise control over project execution while managing costs effectively for our clients. Our team includes certified welders, licensed plumbers, and specialized technicians who deliver tailored solutions for complex commercial needs. We prioritize long-term client relationships, evidenced by partnerships spanning decades, and remain committed to innovation through advanced technologies like BIM modeling and 3D laser scanning.

Our 24/7 emergency response service underscores our dedication to client satisfaction, even after project completion. Recognized for our expertise, we serve diverse markets including education, healthcare, industrial, and community facilities. As a third-generation business, we uphold the Golden Rule in all interactions, treating clients and colleagues with the respect we value ourselves. Our reputation for excellence has made us a trusted referral source even among competitors, reflecting our unwavering commitment to service. Looking ahead, we continue to empower clients with forward-thinking solutions while honoring the principles that have defined our success for over 100 years.
Services
Commercial HVAC Plumbing Repairs Design/Build Construction Medical Gas Installation
Details
  • Year established: 1917
Highlights and features
  • Family-owned since 1917 with third-generation expertise
  • Full in-house capabilities for quality control
  • 24/7 emergency HVAC and plumbing services available
  • Long-term client relationships spanning 40+ years
  • Advanced BIM modeling and 3D laser scanning technology
What people say
Exceptional service Quick response Unmatched expertise Reliable partner Industry-leading solutions
Services
Commercial HVAC
We design, install, and maintain commercial HVAC systems with 24/7 emergency support. Our certified technicians service all equipment types including chillers, boilers, and rooftop units. Clients benefit from energy-efficient solutions tailored to healthcare, education, and industrial facilities while ensuring occupant comfort and safety.
Plumbing Repairs
Our licensed plumbers handle commercial repairs, replacements, and installations. Services include water heater upgrades, gas line work, and medical gas system installations. With master plumbers and certified technicians, we address complex plumbing challenges in industrial and healthcare settings while maintaining compliance with strict safety standards.
Design/Build
We offer integrated design/build solutions using BIM modeling and 3D laser scanning. Our in-house engineers coordinate mechanical and plumbing systems to prevent conflicts before construction. This approach ensures efficient project delivery for new facilities or system upgrades while maintaining budget control and technical precision.
Construction
Our full-service construction team handles HVAC, plumbing, and sheet metal work. Certified welders and prefabrication capabilities enable fast, accurate installations. We manage all phases from medical gas piping to refrigerant systems, ensuring code compliance and operational efficiency for commercial and industrial clients.
Medical Gas Installation
We specialize in medical gas systems installation and maintenance for hospitals and clinics. Certified technicians follow strict safety protocols to ensure reliable oxygen, vacuum, and anesthesia systems. Our work meets healthcare facility requirements while providing ongoing service support for critical life-support infrastructure.
Questions
What services does Eckhardt & Johnson offer?
We provide commercial HVAC systems, plumbing services, design/build solutions, construction, and medical gas installations. Our certified technicians handle all aspects from emergency repairs to large-scale projects.
How long has Eckhardt & Johnson been in business?
We've served New Hampshire since 1917 as a family-owned mechanical contracting firm, now in our third generation of ownership.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency HVAC and plumbing support with radio-dispatched technicians across 20+ service trucks for urgent commercial needs.
What areas do you serve?
We primarily serve New Hampshire, including Hooksett, Manchester, and surrounding communities, with projects across education, healthcare, and industrial sectors.
What sets Eckhardt & Johnson apart from competitors?
Our century-old expertise combined with advanced BIM technology, in-house capabilities, and 24/7 service create unmatched reliability and client satisfaction.