Boiler Service, Repair, and Installation in Central and Northern Maine

Boilers fail in patterns. Low pressure, stuck circulator pumps, failed zone valves, waterlogged expansion tanks, ignition problems, and air-bound loops all show up as the same symptom — cold rooms, cold zones, or no heat at all. We diagnose the actual cause instead of guessing at parts.

Modern boiler control boards, low-water cutoffs, and pressure relief safeties all have to work together. We test the full sequence of operation before signing off on any repair.

Common boiler repairs we handle: circulator pump replacement, zone valve replacement, expansion tank replacement, pressure-reducing valve service, air bleeding and purging, ignition and flame sensor service, low-water cutoff replacement, and aquastat or control board replacement.

If you're seeing pressure swings, hearing knocking and banging in the system, smelling oil or gas, or losing heat in one zone while others work, those are all things we routinely repair.

Replacing a boiler is bigger work than swapping out a furnace — venting, near-boiler piping, primary/secondary loops, circulator placement, and zone configuration all have to be right or the new system won't perform the way it should. We design the install around your existing distribution system (or rebuild it where it makes sense), and we size the new boiler to actual heat loss instead of what was there before.

We can replace older cast-iron boilers with modern higher-efficiency models, install new condensing boilers with outdoor reset controls, and handle the venting, condensate drainage, and fuel connections that those systems require.

Hydronic systems aren't just the boiler — they're the circulator pumps, zone valves, baseboards or radiators, expansion tank, fill valve, pressure-reducing valve, air separator, and the piping that ties it all together. We service the full system, not just the appliance.

Whether you have a single-zone gravity setup in an older farmhouse or a multi-zone system with primary/secondary piping and outdoor reset, we know what to look for.

Annual maintenance protects efficiency, extends boiler life, and catches problems before they become no-heat calls. Our tune-up includes burner service, heat exchanger inspection, combustion analysis where appropriate, circulator inspection, expansion tank verification, pressure relief check, low-water cutoff testing, and verification of correct zone operation.

For homes with older boilers, we also walk through realistic expectations — how many more seasons you can reasonably get, and what to budget for when replacement makes sense.

Boiler pressure too high, too low, or fluctuating between calls for heat almost always points to a specific failure — waterlogged expansion tank, leaking pressure-reducing valve, leaking relief valve, or a slow leak somewhere in the system. We find the actual cause instead of just refilling the boiler and walking away.