Furnace and Boiler Services in New Hampshire
Expert Heating Installation, Repair, and Maintenance
At Jeff MacKay Mechanical, we specialize in furnace and boiler services in New Hampshire. Our expert team offers reliable heating installation, replacement, repair, and maintenance to ensure your home stays warm and cozy all season long.
We provide 24-hour emergency service and quick repairs backed by over thirty years of experience.
Proudly serving Northern New Hampshire communities including Littleton, Lincoln, Plymouth, Hanover, and beyond, we are dedicated to meeting your heating needs.
Outstanding Residential and Light Commercial Heating
At Jeff MacKay Mechanical, we specialize in furnace and boiler services in New Hampshire, providing expert care for both residential and light commercial heating systems. Our skilled heating professionals handle a comprehensive range of services, from furnace replacements and installations to maintenance and repairs for existing boilers.
Our Heating Services Include:
- Furnace & Boiler Repairs
- New Heating System Installations
- Heating Unit Replacements
- Furnace & Boiler Maintenance
Responsive and Skilled Technicians
Our qualified heating technicians have serviced all varieties of residential and light commercial heating systems. We are well-versed in all components of a heating system and can determine every heating system’s specific repair and upkeep needs. Your heating system needs regular preventative maintenance to ensure there are no issues when it’s time to utilize it. Jeff MacKay Mechanical can maintain your heating system for maximum efficiency and energy savings.
Emergency Furnace Service
We’ll work with you to select an economical replacement that will keep your home warm for decades if your furnace struggles to keep your property warm during the coldest temperatures. We also offer emergency furnace and boiler services in New Hampshire around the clock to guarantee that you always have heat when you need it.
Request a free quote, get more information, or seek professional heating advice by calling us at
(office) 603-444-6770 or (cell) 603-616-9664.
Jeff MacKay Mechanical, LLC
Furnace and Boiler Services in New Hampshire
Customer Testimonials
Frequently Asked Questions
Should I use a furnace or a boiler for heating in northern New Hampshire?
Both systems work well, but the best choice depends on your home’s layout and comfort preferences. Boilers are common in older Coos and Grafton county homes and provide consistent, radiant heat ideal for long winters. Furnaces offer faster warm-up times and integrate easily with central air conditioning systems. For furnaces, ensure your unit is rated for cold-climate operation to prevent ‘short-cycling’ when temperatures dip below -10°F.
How long do furnaces and boilers typically last in New Hampshire?
With proper maintenance, furnaces generally last 15–20 years, while boilers can last 20–30 years. In northern New Hampshire, system longevity depends heavily on annual service and protection against extreme cold and long run times.
What are signs my furnace or boiler needs repair?
Warning signs include uneven heating, unusual noises, frequent cycling, rising fuel costs, or cold spots throughout the home. In Coos and Grafton counties, even minor issues can escalate quickly during extended winter cold snaps.
How often should furnaces and boilers be serviced in Coos and Grafton counties?
Annual maintenance is strongly recommended, ideally before the heating season begins. Preventive service ensures safe operation, improves efficiency, and reduces the risk of mid-winter breakdowns when heating is critical.
Are high-efficiency furnaces and boilers worth it in northern NH?
Yes. High-efficiency systems can significantly reduce fuel consumption during long heating seasons. Many homeowners in Coos and Grafton counties see noticeable savings on oil, propane, or natural gas while benefiting from improved comfort and reliability.
Why does my furnace or boiler run constantly in winter?
Extended run times are common during severe cold, but constant operation may also indicate insulation issues, thermostat problems, or declining system efficiency. A professional evaluation can determine whether the system is working as intended or needs adjustment.
Can furnaces and boilers improve indoor air quality?
Yes. Properly maintained furnaces with clean filters and boilers paired with well-designed hydronic systems help reduce airborne dust and allergens, an important benefit for households during long New Hampshire winters when homes remain sealed.
Is it safe to operate an older furnace or boiler?
Older systems can be safe if properly maintained, but aging components may pose efficiency or safety concerns. In rural areas of Coos and Grafton counties, proactive inspections are essential to identify risks such as carbon monoxide leaks or failing heat exchangers.
What heating fuel options are common in Coos and Grafton counties?
Oil and propane are commonly used, depending on location and availability. Choosing the right system involves considering fuel access, operating costs, and long-term efficiency in northern New Hampshire’s climate.
When is the best time to replace a furnace or boiler in northern New Hampshire?
Late spring through early fall is ideal. Planning a replacement outside of peak winter demand avoids emergency situations and allows time to select the most efficient system for your home’s heating needs.
