L H Laplante

Since 1986, L H Laplante Co., Inc. has been a trusted provider of commercial and industrial HVAC systems, plumbing, and mechanical services. As a family-owned business based in Plattsburgh, NY, we prioritize customer satisfaction through expert problem-solving and adherence to the highest industry standards. Our team of certified technicians delivers quality installations, maintenance, and upgrades for institutional, educational, and government facilities across Northern New York. With over 35 years of experience, we combine technical expertise with a commitment to safety, cleanliness, and professionalism. Our services include HVAC systems, process piping, plumbing, and mechanical contracting, tailored to meet the unique needs of each client.

We specialize in both bid-and-spec projects and design-build solutions, ensuring flexibility to address diverse project requirements. Our dedication to lasting results and customer-centric approach has solidified our reputation as a reliable partner for heating, cooling, and plumbing needs. We serve school districts, federal and state agencies, and local governments, providing customized solutions that exceed expectations. By maintaining open communication and focusing on practical, efficient outcomes, we ensure every project aligns with client goals and industry regulations. This combination of experience, technical skill, and personalized service defines our approach to every job.