Boiler Repair in Londonderry, NH
Voted Manchester, NH Top Plumbing Company
- High Quality
- Customer Service Focused
- 20+ Years Experience
Londonderry went from orchard town to one of the busiest suburbs in southern New Hampshire, and its homes show every step of that change. Old farmhouses near the orchards and the Town Common often still heat with steam or hot water radiators, where aging valves, sediment, and patched piping cause most of the trouble. The garrison colonials, capes, and raised ranches built from the 1970s through the 1990s along Mammoth Road and the neighborhoods off Route 102 mostly use hot water baseboard, and their circulators and zone valves are now showing their age. Newer homes and developments around town, on the other hand, are mostly built with forced air furnaces.
LHR Plumbing and Heating works on every one of those systems. Our boiler repair technicians handle old farmhouse boilers and modern condensing units with the same care, and you’ll get a clear, upfront price before we start.
Boiler Repair & Troubleshooting
Not every boiler problem is an emergency, but in a Londonderry winter it helps to know which ones can wait and which ones can’t.
- Call right away if the boiler is running but the house or a whole zone stays cold, since a dead circulator or stuck zone valve can lead to frozen pipes.
- Call right away if you see water under the boiler or the pressure gauge is far out of range, because a failing relief valve or expansion tank can get worse fast.
- Call soon if the pilot keeps going out or a newer unit shows an error code, as ignition problems tend to fail completely on the coldest day.
- Call soon if the boiler clicks on and off all day and fuel bills keep rising, which usually means worn controls or a short cycling problem.
- Mention it at your next visit if the pipes bang or gurgle now and then, since trapped air is common but still worth clearing out.
Whatever brings us out, we fix the root cause instead of the symptom and test your whole system before we go.
Boiler Repair Prevention & Replacement
In a commuter town like Londonderry, a lot of homes sit empty during the workday, so a boiler can struggle for weeks before anyone notices. A fall tune-up catches those slow problems early. We clean the burner, check pressure and safety controls, bleed air from the lines, and replace worn parts before the first real cold snap. Our membership plans book that visit for you every year and give you priority service if something breaks later in the season.
Time for a new boiler? If yours is around 20 years old, needs repairs every winter, or leaves the far bedrooms cold, replacement usually pays off. A high-efficiency boiler uses less fuel, and pairing it with smart thermostats lets you check and adjust your heat from your phone, even while you’re at work. We install everything to current code and offer financing to make it easier on your budget.
Furnace Repair for Newer Homes
New homes in Londonderry, including the latest developments, are mostly heated with forced air furnaces, and our furnace repair team keeps them comfortable all winter.
- Whether your furnace won’t ignite or keeps locking out, we repair igniters, sensors, and controls.
- Whether airflow is weak or uneven, we fix blower motors and check your vents.
- Whether you want more efficiency or summer cooling, we add heat pumps that work alongside the furnace.
- Whether you have one thermostat or several, we install and set them up correctly.
- Whether the furnace fades slowly or quits all at once, our emergency heating repair responds, and we thaw frozen lines as needed.
For boilers, furnaces, cooling, and plumbing, it’s one trusted number.
A Recent Boiler Repair in Londonderry, NH
Jennifer called us from her garrison colonial off Mammoth Road because her kids’ bedrooms were stuffy and hot even with the thermostat turned all the way down. Our technician found a zone valve stuck in the open position, which kept sending hot water to those rooms around the clock. He replaced the valve, checked the other zones, and ran the system through a full cycle to make sure every room heated on command. Jennifer said the bedrooms were comfortable again, and she expected her next fuel bill to show it.
Why Choose LHR Plumbing and Heating for Boiler Repair
Here’s what Londonderry homeowners can expect when they call us.
- Expect certified technicians who know older steam and hot water systems as well as today’s high-efficiency boilers.
- Expect clear, upfront pricing before any work starts.
- Expect same-day scheduling and emergency heating service when the heat can’t wait.
- Expect warranties and a satisfaction guarantee behind every job.
From the boiler to the bathroom, one dependable team takes care of your entire home.
Frequently Asked Questions
Many older cast iron boilers can run safely for a long time with regular maintenance. A tune-up lets us check the venting, safety controls, and heat exchanger for problems. If anything isn’t safe, we’ll explain your repair and replacement options.
Most older homes in town have boilers and most new homes have furnaces, and both work well when they’re maintained. If you’re adding on or replacing a system, we’ll help you figure out what makes sense.
In most cases, yes. Boiler replacements typically require a permit and inspection through the Town of Londonderry, and our team handles that for you.
Rooms over garages have cold air below and outside walls on several sides, so pipes there lose heat quickly. If your heat goes out, open cabinet doors and call us for frozen line repair so we can thaw the lines and restore heat.
Yes. We provide emergency heating service throughout Londonderry and work to get a technician to you quickly. Call us as soon as your boiler stops working.