Gregory & Martin Inc.
Gregory & Martin Inc. (GMI) is committed to delivering dependable service with integrity and professionalism. For more than three decades, we have built lasting relationships by focusing on clear communication, honest recommendations, and workmanship that stands the test of time.
Serving The Southwestern PA Area Since 1992
Plumbing, Heating & Cooling
Our experienced team is fully qualified to complete the work you’re looking for, delivering dependable service and quality results while building lasting relationships with our customers.
GMI Services
We offer a full range of professional HVAC, heating, and plumbing services designed to keep your home or business running smoothly. Our skilled technicians are trained to handle repairs, installations, and maintenance with precision and care.
Emergency Service Available
Equipment problems don’t always happen during business hours. If you’re experiencing an urgent heating, cooling, or plumbing issue after hours, our team is available to help.
For emergency service, call us directly and a member of our team will respond as soon as possible.
- Schedule Service
- On-Site Diagnosis
- Clear Explanation & Upfront Options That Are Best For You
- Professional Repair or Installation
- Final Testing & Cleanup
Service Area
Indiana, Westmoreland, Armstrong, Cambria, Allegheny, Somerset Counties. ~50 mile radius around Derry County, PA
Serving The Southwestern PA Area Since 1992
Have a problem? We’re Here to Help
Your home or business deserves expert care, and our skilled team is equipped to diagnose and fix a wide range of plumbing, heating, and cooling issues. Get in touch with us today and let us take care of the problem.
GMI Careers
At GMI, we are looking for individuals who can work independently while maintaining a strong focus on customer service. We value team members who take pride in what they do, bring a positive attitude to work each day, and are motivated to grow alongside the business.
Frequently Asked Questions
Most manufacturers recommend annual maintenance before the start of the heating season to ensure your system is running safely and efficiently. Contact our experts to schedule you.
We work with furnaces, boilers, heat pumps, and more. Whether it’s residential or commercial, our technicians are trained to handle a wide range of systems.
This can happen due to low refrigerant, clogged filters, thermostat issues, or mechanical problems. Contact our experts to help solve your problem.
If your unit is over 10–12 years old and requires frequent repairs, replacement may be more cost-effective. Contact our experts for a free quote.
Shut off the main water supply immediately and call a plumber to prevent further damage.
This could be due to a failed heating element, thermostat issue, or leaking water heater. Contact our experts to help solve your problem.
Yes, routine service contracts help prevent downtime, extend equipment life, and keep energy costs under control.
Yes, we support everything from small offices to schools, medical facilities, warehouses, and industrial plants.