Boiler Installation & Repair in Duluth, MN
Hot-water and steam boilers for Duluth's older homes: replacement with a modern boiler, and repair of the boilers, pumps and radiators already there.
Service ticket · boiler
Check all that apply
Radiators cold at the top or on one floor
Pressure gauge low, or the relief valve dripping
Banging or gurgling in the pipes
Water on the floor around the boiler
Boiler short-cycles or won't light
Steam boiler losing water fast
Boiler installation for Duluth homes
Boiler installation in Duluth, MN usually means replacing a cast-iron boiler that has heated an older house for decades, and keeping the radiators that still work. Radiators, baseboard and the pipes between them often outlast two or three boilers. The job is choosing a new boiler that suits that system, then connecting it so the water moves the way the house was built to move it.
Hot-water (hydronic) systems pump heated water through radiators or baseboard and back. Steam systems boil water and let the steam rise to the radiators on its own. They are different jobs, and the first question on any boiler call is which one you have.
Boiler replacement in Duluth, MN: what decides the new one
The heat loss
How much heat the house needs on the coldest night, not the size of the old boiler.
Hot water or steam
Steam needs a steam boiler. Hot-water systems have more choices.
Return water temperature
A condensing boiler only reaches its rated efficiency when the water coming back is cool enough. Big old radiators often allow it.
Venting
A condensing boiler vents through plastic pipe; a conventional one may need its chimney lined.
Zones and pumps
Which floors or rooms heat on their own thermostat, and the pumps and valves that do it.
Domestic hot water
Whether the boiler also heats the house's water through an indirect tank.
Boiler repair in Duluth, MN
Many boiler calls are repairs, not replacements. A circulator pump that stopped, an expansion tank that has filled with water, a stuck zone valve, air trapped in the radiators, a pressure-reducing valve that no longer feeds water, or an ignition fault on the burner. Each of those leaves part or all of the house cold and each is a part, not a new boiler.
A leak from the boiler itself is different. Cast-iron sections that crack, or a heat exchanger that rusts through, usually mean it is time to price a replacement. You get both prices when that is the question.
Boiler service in Duluth, MN, once a year
A yearly boiler service before the heating season checks the burner and flame, the venting, the pressure and relief valve, the expansion tank, the pumps and the low-water cutoff on a steam boiler. Steam boilers also get their water level and sight glass checked, because a steam boiler that runs low on water can damage itself.
What a Duluth boiler house looks like
Duluth's older neighbourhoods, from the East Hillside to Lakeside, are full of houses built when boilers and radiators were the standard way to heat a home on a cold hill above the lake. Many still have them, sometimes with an old gravity system later fitted with a pump. That history is why a boiler job here starts with looking at the pipes, not just the boiler.
Boiler questions
Asked about hot water and steam.
How do I know if I have a hot-water or a steam boiler?
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A steam boiler has a sight glass, a small glass tube showing the water level, and its radiators usually have one pipe and an air vent that hisses. A hot-water boiler has a pressure and temperature gauge, an expansion tank and two pipes to most radiators.
Can I keep my old radiators with a new boiler?
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Usually yes. Cast-iron radiators last a very long time. They are checked for leaks and stuck valves, and the new boiler is chosen to work with them.
Should I switch from a boiler to a furnace?
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It is a much bigger job than replacing the boiler, because the house needs ductwork. Most owners of boiler homes keep the boiler and add a ductless heat pump for cooling.
Why are some radiators cold at the top?
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On a hot-water system that is usually trapped air. Bleeding the radiator lets it out. If it keeps coming back, the system pressure or the air separator needs a look.
Free quote
Tell us about your boiler.
Hot water or steam, its age if you know it, and what it's doing. We call back to ask the rest, and you get a price before any work.
Furnaces, boilers, air conditioning and heat pumps
Duluth, Superior and the towns around the harbor
The price first, then your decision