New Hampshire
From our Manchester and Dover branches, High Ground brings one veteran-owned team for HVAC, plumbing, and electrical to homes across the Seacoast, the Merrimack Valley, and the Lakes Region.
Heating & Cooling
Repairs and maintenance for year-round comfort.
Plumbing
Expert fixes, clean installs, done right the first time.
Electrical
Safe, code-compliant, and expertly handled every time.
A local veteran-owned team, we provide mission-critical installation, repair and maintenance. Because doing it right matters - our work is Guaranteed For Life.
New Hampshire packs an enormous range of conditions into a small footprint, and a comfort plan that works on the Seacoast can fall flat in the Lakes Region or the White Mountains. Down along Great Bay and the Atlantic coast, humid summers and salt air drive the load. Through the Merrimack Valley around Manchester and Nashua, milder USDA zones and long growing seasons still give way to hard winters. Up into the Lakes Region near Winnipesaukee and Laconia, and into the high country of the Whites, minimum temperatures plunge and frost-free days grow short. Elevation, latitude, and the ocean all shift the numbers town by town, so we size and design equipment to the conditions your specific address actually sees.
New Hampshire runs one of the longest, coldest heating seasons in the country, and the state leans harder on heating oil and propane than almost anywhere else in America. That makes the size of your heating system a real money question, not a rounding error. An oversized boiler or furnace short-cycles, wastes fuel, and leaves cold rooms; an undersized one never catches up on a single-digit January night. We run an actual Manual J load calculation on your home - insulation, windows, air sealing, square footage, and design temperature - instead of guessing from the old unit's nameplate. Right-sizing the equipment to the real load is how you cut fuel bills, hold even temperatures, and get the full life out of the system you paid for.
Modern cold-climate heat pumps have changed what is possible in New Hampshire. Today's units keep producing usable heat well below zero, which lets many homes pair a heat pump with their existing oil or propane system and burn far less fuel through the shoulder seasons. The same equipment reverses in summer to handle the mugginess that rolls in off Great Bay and the river valleys, where July and August turn genuinely humid. Comfort here is as much about moisture as temperature, so we design for dehumidification, not just cooling. Right-sized systems, proper airflow, and whole-home dehumidifiers where they make sense keep a house dry, protect finishes and framing from mold, and let you hold a comfortable setting without overcooling every room to chase the humidity down.
This is the single most important plumbing fact in New Hampshire. The same granite bedrock the state is named for gives NH some of the highest naturally occurring arsenic, radon, and uranium in private well water anywhere in the nation. USGS work estimates roughly one in five private wells exceeds the federal arsenic limit, and the state carries the country's highest bladder-cancer rate, tied in part to arsenic in well water. Many bedrock wells also carry high radon, plus manganese and heavy hardness that stain fixtures and wreck water heaters. None of it changes the taste, so you cannot know without a test. We test private wells for what is actually in them and build the treatment - arsenic removal, radon aeration, softening, filtration - that the results call for.
When the deep snowpack lets go in March and April, New Hampshire's mud season sends the water table climbing fast, and low-lying homes near the Merrimack, the Piscataqua, and the state's countless lakes and wetlands feel it first. Meltwater and spring rain pile up faster than saturated ground can shed them, and basements that stayed dry all winter start seeping. A wet basement is not just a nuisance; it rots framing, ruins finished space, and feeds the mold that humid summers finish off. We keep basements dry with properly pitched drainage, a correctly sized sump pump, and a battery or water-powered backup so the pump still runs during the exact storm that knocks the power out. Getting the water out is cheaper than repairing what it ruins.
New Hampshire's housing runs old, and a lot of it still carries the wiring it was built with. We regularly open panels to find 60- or 100-amp fuse boxes, cloth-insulated knob-and-tube runs from before 1950, and services never meant to feed a modern home. That was fine for a few lights and a radio; it is badly overmatched by heat pumps, EV chargers, well pumps, and everything else a family plugs in today. Overloaded, aged wiring is a genuine fire risk, and many NH insurers now require knob-and-tube replacement before they will write a policy. We upgrade services to 200 amps, swap fuse boxes for modern breaker panels, and rewire the old circuits safely and to code, so the electrical system matches the way you actually live.
Ice is New Hampshire's hardest test of the grid. The December 2008 ice storm knocked out power to more than 400,000 customers across 211 towns, and some rural homes went two full weeks without electricity in the dead of winter. Nor'easters and heavy wet snow bring the same threat every year, and long tree-lined rural lines mean the power that goes out here can stay out for days. When the grid drops in January, a home without power is a home without heat, without a well pump, and without a working sump. A properly sized whole-home standby generator, wired to a transfer switch and fueled by propane or natural gas, starts on its own and keeps heat, water, and refrigeration running until the utility catches up.
High Ground Service Pros is a veteran-owned company built to give New Hampshire homeowners one licensed, accountable team for HVAC, plumbing, and electrical instead of three different phone numbers. We run branches in Manchester and Dover, which puts our crews within easy reach of the Seacoast, the Merrimack Valley, and the Lakes Region, and we hold the state licensing the work requires. Every job is backed by our lifetime workmanship guarantee, because the point is to fix it right the first time and stand behind it. Our mission is simple: giving the trades a good home, and giving your home a team you can call for years. Find your town below to see how all of this plays out where you actually live.
Drawn from our own completed job history, not a stock map.
Our last job in New Hampshire was 2 days ago.
Find your town for local details on the conditions we work in and how to book.
When you invite us into your home, we take that responsibility seriously. Every project - big or small, is handled with care, respect, and craftsmanship you can feel. Our Lifetime Workmanship Guarantee means every job is done right — or we make it right, fast.
Every technician undergoes rigorous training and continuous skill upgrades.
“They always kept me updated with the schedule. Made a rather complex job run like clockwork.”
- Dave, NH
“Super quick & professional. Looking forward to working with them in the future. Highly recommend!”
- Enrique, NJ
“Went out of his way to help us with our new house that we’d just purchased with helpful tips.”
- Eric, NH
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Why does New Hampshire well water need testing?
Because NH's granite bedrock naturally releases arsenic, radon, uranium, and manganese into private wells, and none of it changes how the water looks, smells, or tastes. USGS estimates about one in five NH wells exceeds the federal arsenic limit, and the state has the nation's highest bladder-cancer rate. Public water is tested for you; a private well is not. A lab test is the only way to know what is in yours and what treatment it needs.
How often should I test my private well in NH?
Do cold-climate heat pumps really work in NH winters?
Why is heating so expensive in New Hampshire?
Do I need a whole-home generator in NH?
Why do New Hampshire basements flood in spring?
My NH home has knob-and-tube or a fuse box. Should I upgrade?
Does High Ground cover my part of New Hampshire?
Tell us what you need - we’ll confirm your appointment and get your home back to comfortable, fast.
HOW QUICKLY CAN WE SERVE YOU?
Tell us how to reach you and a real person will call you back to get you scheduled anywhere in New Hampshire.
Need someone now? Call (603) 262-3644
The work that comes up most around here. Same team, same guarantee, whichever one you need.
