Heating & Cooling
Boiler Repair in New Hampshire, New Jersey & Southern Maine
No heat, a cold zone, or banging pipes - we diagnose the whole hydronic loop, not just the boiler, and most calls are fixed the same day.
Heating & Cooling
No heat, a cold zone, or banging pipes - we diagnose the whole hydronic loop, not just the boiler, and most calls are fixed the same day.
A boiler does not blow air. It heats water and pushes it through pipe to radiators, baseboard fin-tube, or tubing buried in a floor. A no-heat call on that system can start in a dozen places: the burner, the circulator that moves the water, the zone valves that route it, the expansion tank that gives hot water somewhere to expand, or a pocket of air at the top of a loop that stops flow cold.
We repair the whole loop, not just the box in the basement. Gas, propane and oil-fired. Cast iron sectionals that have run forty years, and wall-hung condensing boilers with error codes. Steam too, where the low water cutoff that protects the boiler is often the part that shut it down. If yours makes hot water through an indirect tank or tankless coil, that is part of the call.
Hydronic heat fails differently than forced air. One end of the house goes cold while the rest stays fine, or the pipes start making noise.
Two of those deserve urgency. A reset button you press more than once is not a fix, and on an oil burner repeated resets can push unburned fuel into a hot chamber. A boiler quietly losing water is worse than it looks, since every refill feeds oxygenated water into a loop built to hold the same water for years.
Pressure, supply and return temperature, and how long the burner runs before it satisfies tell us whether we are chasing combustion, circulation, or controls. Those are three different repairs, and guessing between them is how people end up buying a circulator that was working fine.
The rest is hands-on. We check the expansion tank by weight and by pressure, since a waterlogged tank is the most common reason a relief valve drips and the most misread as a dying boiler. We test the low water cutoff, which fails silently and locks out a good unit. On oil, we pull the nozzle and electrodes, verify pump pressure, and run a combustion analysis so the burner is set to numbers, not to how the flame looks.
You get the finding and the price before the repair starts. Trucks carry circulators, zone valves, aquastats, relief valves and nozzles, so most no-heat calls finish the day they start.
Most of what fails on a boiler is bolted to it, not part of it. Circulators, valves, controls and tanks are wear parts, and a well-piped cast iron boiler can outlive two or three sets of them. That is the advantage of hydronic heat, and why we repair far more of these than we replace.
The line moves when the failure is the vessel itself. A cracked section or a leaking heat exchanger is not something to patch. Age matters less than water quality and how the unit was piped the day it went in, because undersized near-boiler piping short-cycles a boiler for its whole life and takes years off it. Fuel shapes it too. Burn oil or propane because no gas main runs down your road, and the yearly savings from a modern unit count for more than on natural gas.
New England holds far more hydronic heat than most of the country, and much of it is old. Boilers here are often the third or fourth unit tied into original piping, sometimes piping converted from a coal-fired gravity system and never rebalanced. Whole houses still run on one zone because that is how they were built, which is why the second floor cooks while a back bedroom stays cold.
Fuel is the other regional fact. Across rural New Hampshire and southern Maine there is no gas main, so oil and propane carry the winter, and oil-fired equipment needs annual attention gas equipment can skip. Homes on granite bedrock wells push hard, mineral-heavy water in with every fill, which scales heat exchangers and shortens the life of an indirect water heater. When a December ice storm drops the power, the boiler stops with a full tank of oil in the yard, because circulators and controls run on electricity.
High Ground is veteran-owned, about 120 people across New Hampshire, New Jersey and southern Maine. Licensed techs, permits pulled, and a price agreed before a wrench moves. Call in the middle of a cold snap and a person answers.
Every repair carries our Lifetime Workmanship Guarantee. If our work does not hold, we come back and make it right, fast. That is also why our techs chase the real fault instead of the fast one. We are the ones who drive back if they guess.
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 is one part of my house cold when the boiler is running?
On a multi-zone system that points at that zone, not the boiler. The usual causes are a zone valve that stopped opening, a circulator for that loop that is no longer spinning, or air trapped at the high point of the piping so water cannot flow through it.
Air is worth trying yourself first. Bleeding the baseboard or radiator at the far end of the cold zone with the system running clears a lot of these calls. If the zone still will not warm after bleeding, the fault is electrical or mechanical and needs a tech.
What pressure should my boiler be at?
How often does an oil-fired boiler need to be serviced?
Why is water dripping from the pipe near my boiler?
Will my boiler run during a power outage?
Is it worth repairing a boiler that is 30 years old?
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 about boiler repair.
Need someone now? Call (603) 262-3644
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