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Boiler replacement in Minneapolis homes
A boiler replacement should be sized to the radiators and the house, not the old boiler's nameplate, which was often oversized decades ago. We measure the radiation, choose steam or hot water equipment to match, and pipe it so it lasts as long as the one it replaces.
- 24/7 calls answered
- Minneapolis service office
- Sized to radiators not the nameplate
- 20 to 30 yrs typical boiler life
Quick answer
Boiler replacement in Minneapolis averages about $7,896, with a typical range of $3,201 to $13,171 depending on the heated space and the boiler type, according to Angi's 2026 data. Sizing comes from the connected radiators and the home's heat loss, and hot water systems often suit a high-efficiency condensing boiler.
Boilers & Water Heaters
What goes into a boiler replacement
Old boilers were often sized generously, then the house got insulation and storm windows. Replacing one with a unit of the same size wastes fuel and, with a condensing boiler, keeps it from running in its efficient range. We count the radiators, measure them, and run a heat loss for the house before choosing a size.
Then we choose the type. Hot water systems can take a condensing boiler that modulates its output. Steam systems need a steam boiler and careful near-boiler piping. Some homes are good candidates for a combi boiler that also makes domestic hot water.
Compare
Choosing the replacement boiler
| Type | Best for | Watch for |
|---|---|---|
| Condensing hot water | Most hot water radiator and baseboard homes | Needs outdoor reset to reach its efficiency |
| Standard hot water | Very high temperature systems | Chimney venting and liner |
| Steam | Houses staying on steam | Near-boiler piping must be right |
| Combi | Smaller homes, modest hot water use | Hot water priority over heat |
Cost factors
What moves the price
Angi's 2026 figures put Minneapolis boiler replacement at $3,201 to $13,171, averaging $7,896. These are planning ranges; here is what moves yours.
- Boiler type. Condensing, standard hot water, steam and combi units differ in cost.
- Capacity. Sized to heat loss and connected radiation.
- Venting. Condensing boilers vent through plastic; standard boilers may need a chimney liner.
- Near-boiler piping. New headers, pumps and valves are a large part of the labor.
- Hot water. An indirect tank or combi unit replaces a separate water heater.
- Controls. Outdoor reset and zone controls improve efficiency.
- Old boiler removal. Heavy cast iron boilers take time and labor to remove.
Condensing boiler replacement
A condensing boiler extracts enough heat from its exhaust that water vapor condenses, which is where the high efficiency comes from. It works best at lower water temperatures, so we set an outdoor reset control that lowers the water temperature on milder days. Condensing boilers are compact and wall-hung, vent through PVC or polypropylene, need a condensate drain with a neutralizer, and are piped with primary-secondary loops or low-loss headers to protect them. We size the unit to the house's heat loss and the connected radiators.
Steam to hot water conversion
Some steam systems can be converted to hot water, which runs quieter, heats more evenly and allows a high-efficiency boiler. It depends on the piping: one-pipe steam systems usually need extra return piping, and every radiator and joint must hold water pressure, which old steam radiators may not. We inspect the system and pressure test before recommending it. When conversion is not practical, a new properly piped steam boiler with correct near-boiler piping gives quiet, even heat for decades.
Combi boiler for heat and hot water
A combi boiler heats the house and makes domestic hot water on demand from one wall-hung unit, freeing up space and removing a separate water heater. It suits smaller homes and those with modest hot water demand. When the house calls for heat and a shower runs at the same time, hot water takes priority, which most families never notice, though larger households can. We look at the number of bathrooms and the heating load before recommending a combi over a boiler with a separate indirect tank.
Local conditions that change the fix
Most Minneapolis boiler replacements fall between $3,201 and $13,171, averaging about $7,896 in Angi's 2026 data, depending on the space heated and the boiler chosen. That wide range is mostly sizing and system type. A 1920s house that has since been insulated often needs a much smaller boiler than the one in the basement, and a steam system costs more to replace than a compact hot water unit.
Step by step
How a boiler replacement runs
- 1
Measure the house and radiators
Heat loss calculated and radiation measured.
- 2
Choose type and size
Condensing, steam or combi chosen with written options.
- 3
Permit and removal
Permit pulled, old boiler drained and removed.
- 4
Install and pipe
New boiler set, piped, vented and wired with controls.
- 5
Fill, purge and start up
System filled, air purged, combustion tested and settings made.
Is the old boiler at the end of its life?
Call and we will measure your radiators and give you a written replacement price with the options side by side.
Brands we service and install
On boilers and water heaters we see Weil-McLain, Navien, Bosch and Rheem most often.
Timing
How long the house is without heat
A like-for-like hot water boiler replacement usually takes one to two days. Steam boilers and conversions to a condensing unit with new piping can take two to three days. In cold weather we plan the swap so heat is off for as little time as possible and bring temporary heaters if needed.
Questions we get on the phone
Boiler installation questions from Minneapolis homeowners
Typically 20 to 30 years. A leaking heat exchanger usually means replacement.
Usually not. Radiator heat is comfortable, and converting to forced air means installing ducts.
It comes from your house's heat loss and the radiators connected, not the old nameplate.
Yes, with a combi boiler or an indirect water heater.
Yes, and we pay close attention to the near-boiler piping that makes steam quiet and even.
More from this category
Related work we handle
From our guides: Boiler warning signs to catch before winter.
Replace the boiler the right size
Call to have your radiators measured and get a written boiler replacement price.