
HVAC Services in Merrimack, NH
Residential & Commercial Electrician in Merrimack
Installation, Maintenance & Repair
Trust our licensed electricians to keep your Merrimack home or business powered smoothly and safely. From wiring and lighting upgrades to commercial electrical improvements, we deliver dependable and efficient service for every project.
Commercial Generators
Parking Lot Lighting
EV Chargers
Commercial Tenant Fit-ups
Electrical Panel Upgrades
LED Lighting Upgrades
Commercial Smoke, Fire, and CO Detectors
Residential and Commercial Heating Services in Merrimack
Installation, Maintenance & Repair
Our experienced heating technicians provide Merrimack customers with reliable, efficient heating services, including expert installations, tune-ups, and repairs. No matter your system, we help ensure safe, consistent warmth throughout the winter.

Licensed Fuel Gasfitters in NH
Unlike many HVAC companies, we hold a New Hampshire Fuel Gasfitters License, which saves you both time and money.
One Company, One Call
You don’t need to hire a separate contractor for your fuel gas connection.
Faster Installations
You save time with a streamlined installation process.
Peace of Mind
You know your heating installation is safe and complies with all state regulations.

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Residential and Commercial Cooling Services in Merrimack
AC Installation, Maintenance & Repair
Stay cool during the warmest months in New Hampshire with our expert AC services. We install, maintain, and repair both central AC systems and ductless mini-split HVAC units for Merrimack homes and commercial spaces.
Top-Rated Electricians and HVAC Technicians
If you need an electrician or HVAC services in Southern New Hampshire, you can count on Jolt Electric & HVAC. Be sure to check out our many 5-star customer reviews below and contact our team to discuss your project. You can also ask about available financing options for heating, cooling, and electrical services.
What Our Customers Say
At Jolt Electric & HVAC, we take pride in delivering top-quality workmanship and reliable service to every client. See what our satisfied customers have to say about working with us.
FAQ
How Often Should a Furnace in Merrimack Get a Tune-Up?
Once a year, ideally in September or October before the first hard cold snap. Once temperatures drop, the schedule fills with no-heat calls, so booking in the shoulder season gets you a faster appointment and time to fix anything the tune-up finds before you need the heat. Our furnace maintenance visits include a combustion analysis with before and after readings, so you can see what the tune-up changed.
Do You Work on Boilers in Merrimack Too?
Yes. Our boiler installation and repair services cover oil, gas and electric boilers plus steam systems, from cleanings to full replacement. Boiler trouble often shows up as uneven heat, leaks or rust around the unit, or banging and gurgling noises, and prompt service keeps a small problem from becoming a bigger one.
Why Won't My Furnace Stay On?
A furnace that starts and then shuts down is often tripping a safety control, which can come from restricted airflow, a dirty flame sensor or a failing ignitor. Furnace repair starts with a diagnostic of the thermostat signal, ignition sequence, blower and safety switches, and we explain what failed and what it costs before the work starts.
Service Area:
We proudly serve homeowners and businesses throughout Southern New Hampshire, including Litchfield, Nashua, Londonderry, Milford, Merrimack, Hudson, Manchester, Amherst, Hollis, and Bedford.
























