Sustainable, Reliable Geothermal Heating Solutions Installed by Experts
Geothermal heating systems use underground energy to deliver efficient, consistent comfort all year long. With over 33 years of heating experience, NJM Mechanical and Contracting installs, services, and maintains geothermal systems tailored to your home’s size, soil conditions, and energy needs.
Whether you’re looking to lower heating bills, upgrade an outdated system, or improve home efficiency, our team ensures proper installation, accurate system design, and long-term reliability — always following local codes and manufacturer specifications.
Professional installation of ground-source heat pumps and loop systems designed for maximum energy efficiency and long-term performance.
Expert troubleshooting and repair of ground loops, heat pumps, circulation issues, and system controls.
Upgrade aging or inefficient geothermal units with modern, high-efficiency systems that deliver improved heating and cooling performance.
Routine inspections, cleaning, pressure checks, and performance testing to ensure your geothermal system runs efficiently year-round.
Expert Geothermal Solutions Backed
by Over 33 Years of Experience
Why Choose NJM for Geothermal Installation & Service?
Fully trained in geothermal system installation, design, diagnostics, and safety.
Fully trained in geothermal system installation, design, diagnostics, and safety.
Geothermal systems reduce energy consumption, lower utility bills, and provide sustainable heating.
We size, design, and install systems based on home requirements, soil conditions, and loop type.
Our team quickly diagnoses and resolves geothermal system issues for uninterrupted heating.
Decades of professional experience mean we install fixtures, piping, and full systems correctly the first time — with workmanship that lasts.
No hidden charges or surprise add-ons. You’ll receive a clear estimate outlining exactly what your installation includes.
Geothermal Heating Systems on Long Island, NY
Reduce energy costs and enjoy consistent, eco-friendly heat with NJM’s professional geothermal heating services. We specialize in geothermal system installation, repair, replacement, and maintenance for homeowners across Nassau and Suffolk County — providing long-lasting comfort powered by the earth’s natural energy.
Energy-Efficient • Eco-Friendly • High-Performance Heating
Heat Pump Performance Testing
Testing compressors, coils, and refrigerant levels for optimal output.
Circulator Pump Evaluation
Ensuring pumps operate correctly to maintain proper system flow.
Ground Loop & Piping Inspection
Checking ground loops for proper pressure, flow rates, and potential leaks.
Filter, Coil & Component Cleaning
Removing buildup to maintain efficiency and air quality.
Electrical & Control System Review
Inspecting wiring, thermostats, relays, and control boards for accuracy.
Long Island Code Compliance Review
Verifying all geothermal installations and repairs meet local regulations.
Trusted Heating Expertise for Long Island Homes & Businesses
Our Geothermal Heating Safety & Inspection Services Include:
NJM performs detailed geothermal inspections to ensure proper system function, safe operation, and maximum efficiency.
What Our Long Island Clients Are Saying...
Kris
I couldn’t recommend Neil enough! From start to finish him and his team were professional, efficient and experienced. We had a job pulling up rocks and putting top soil down which I know can be a tedious job. We appreciate the work and look
Evelyn Powers
We had an ongoing issue with clogs. My daughter woke up to flooding in her bedroom from her toilet, which was not fun! This was our first time having NJM in our home. Neil was knowledgeable and gave us several options. we chose to have him use the camera to get to the root of the problem. He was able to pinpoint several issues and was able to fix clog and clean out the pipes. Neil and his crew were very professional,
Irene Cheung
I contacted NJM Mechanical because I didn’t have hot water anywhere in my house. Neil was able to diagnose the issue and get to work. My navien tankless water heater is only a year old and still under warranty. Instead of waiting on Navien to send the part so the issue can be corrected, Neil went out, found the part, purchased it,
William Lo
Great experience. Neil came out and took the time to explain everything thoroughly. He was able to fix all the errors on our Navien and have it back up and running. Following up a week later. Neil and Mike came out to redo the Navien system for proper instillation.
Unfortunatley, after there was a gas leak with our Navien system. Neil was able to get
James Farnworth
Neil from NJM was able to get my ac system up and running when others could not. He was honest with me right from the beginning and all costs were discussed before repairs began. Additionally, Neil spent time explaining to me how my system operates and the things I could do to help it run at peak performance. It was quite refreshing to experience a service technician who demonstrated the uppermost
Raul Chardon
Honest professional full of knowledge not BS. Takes pride in his craft and is a master of it.
Find Heating Services Near You!
Service Area Links:
- Long Island
- Nassau County
- Suffolk County