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L H Laplante L H Laplante
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Business Details
40 Years
experience
Your Trusted HVAC Partner in Plattsburgh, NY
Since 1986, L H Laplante has been a trusted provider of commercial and industrial HVAC systems, plumbing, and mechanical services in Plattsburgh, NY, and Northern New York. As a family-owned business, we prioritize customer satisfaction by delivering high-quality workmanship and tailored solutions. Our team of certified professionals specializes in system installations, maintenance, and upgrades for institutional, educational, and government facilities. With over 35 years of experience, we combine technical expertise with a commitment to safety and professionalism. Our services extend to process piping and design-build projects, ensuring comprehensive support for diverse client needs.

We maintain open communication with clients to address challenges and implement effective, code-compliant solutions. Our dedication to excellence has earned us long-standing relationships with school districts, municipalities, and commercial clients. By adhering to the highest industry standards, we ensure reliable, energy-efficient systems that meet evolving demands. Our focus on continuous improvement and client collaboration drives our reputation as a dependable partner in mechanical contracting. Whether handling routine maintenance or complex installations, we deliver lasting value through precision and integrity.
Services
HVAC Systems Plumbing Process Piping Mechanical Services Design-Build Solutions
Details
  • Year established: 1986
Highlights and features
  • Family-owned since 1986 with deep local expertise in Northern NY.
  • Certified technicians deliver code-compliant HVAC and plumbing solutions.
  • Specialize in design-build services for customized mechanical systems.
  • Serve schools, municipalities, and commercial clients with tailored support.
  • Commitment to safety, professionalism, and long-term client relationships.
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Services
HVAC Systems
We design, install, and maintain commercial and industrial HVAC systems tailored to client needs. Our services include system upgrades, full installations, and emergency repairs for optimal climate control. With expertise in energy-efficient solutions, we ensure reliable performance for schools, government buildings, and businesses.
Plumbing
Our certified plumbers provide comprehensive services for commercial and institutional facilities. From routine maintenance to complex installations, we address leaks, drainage, and system upgrades while adhering to safety standards. Our focus on durability ensures long-term functionality for Northern NY clients.
Process Piping
We install and maintain process piping systems for industrial and commercial applications. Our technicians ensure compliance with health and safety regulations, delivering customized solutions for fluid transport, gas lines, and specialized piping needs in manufacturing and institutional settings.
Mechanical Contracting
Our mechanical contracting team handles projects ranging from system design to on-site execution. We specialize in integrating HVAC, plumbing, and process piping for industrial and commercial clients, prioritizing efficiency, code compliance, and minimal operational disruption during installations.
Design-Build Services
We offer design-build services for clients seeking tailored mechanical systems. By collaborating directly with stakeholders, we create cost-effective, innovative solutions for HVAC, plumbing, and piping projects. This approach streamlines timelines and ensures alignment with specific facility requirements.
Questions
What services does L.H. LaPlante Co. offer?
We specialize in HVAC systems, plumbing, process piping, and mechanical contracting for commercial, industrial, and institutional clients.
Do you serve areas outside Plattsburgh?
Yes, we serve all of Northern New York, including schools, municipalities, and commercial facilities.
Are your technicians certified?
Yes, our team includes certified professionals trained in HVAC, plumbing, and industrial piping systems.
Can you handle emergency repairs?
We prioritize scheduled services but work to accommodate urgent HVAC or plumbing issues during business hours.
Do you offer design-build solutions?
Yes, we provide customized design-build services for mechanical systems tailored to client specifications.