About Granite State Mechanical Services in Merrimack, NH
99 Back River Rd, Merrimack, NH 03054
What the Company Handles
- Shower installation
- Toilet installation
- HVAC system repair
- Bathtub installation
- Water pipe installation
- Toilet repair
- Water heater repair
- Plumbing inspection
Meet the Team
Granite State Mechanical Services is a family-owned and operated business that has been a trusted name in Merrimack, NH, and surrounding communities since 1987. Founded by Mark Downing as a one-man shop, it has grown to meet the diverse needs of New Hampshire residents and businesses, all while maintaining the personal touch and reliable service of a local family business. We specialize in a full range of HVAC and plumbing services, from installing new ductless mini-split systems and water heaters to repairing toilets and maintaining furnaces. Our team, many of whom have been with us for years, is committed to honest, straightforward communication, free estimates, and professional, courteous service. We believe in putting our customers first, which is why we have technicians available 24/7 to ensure your home comfort is never compromised. At Granite State Mechanical, we build relationships as strong as our installations.
Q&A
How can Granite State Mechanical help with low water pressure in my Merrimack home?
Low water pressure is a common issue in the area, often related to aging pipes or mineral buildup. Our plumbing team in Merrimack is experienced in diagnosing the root cause, whether it's a problem with your home's main supply line, a faulty pressure regulator, or corroded fixtures. We provide thorough plumbing inspections and repairs, including water pipe installation or replacement, to restore proper pressure and improve the performance of your showers, faucets, and appliances.
What's included in your HVAC system maintenance service?
Our HVAC maintenance is designed to keep your heating and cooling systems running efficiently and reliably, which can help lower energy bills and prevent costly breakdowns. For Merrimack homeowners, this service typically includes cleaning and inspecting system components, checking refrigerant levels, testing safety controls, lubricating moving parts, and checking for proper airflow. Regular maintenance helps extend the life of your equipment and is key to maintaining good indoor air quality.
Do you offer free estimates for projects like bathroom fixture installation?
Yes, we provide free, no-obligation estimates for all our services, including bathtub, shower, and toilet installation. A member of our team will meet with you to discuss your project, assess the specific requirements of your Merrimack home, and provide a clear, competitive price. We believe in transparent, honest pricing so you can make an informed decision about your home comfort and plumbing upgrades.
Business Location & Hours
| Mon: | 7:00 AM - 5:00 PM |
| Tue: | 7:00 AM - 5:00 PM |
| Wed: | 7:00 AM - 5:00 PM |
| Thu: | 7:00 AM - 5:00 PM |
| Fri: | 7:00 AM - 5:00 PM |
| Sat: | Closed |
| Sun: | Closed |


