Boiler Repair and Replacement for Steady Heat Through Minnesota Winters

NMS Mechanical provides boiler repair and replacement in Lakeville, MN, and throughout the Twin Cities Metro and surrounding areas. When your radiators go cold or your boiler starts acting up, our skilled team finds the cause, explains your options clearly, and gets your home comfortable again. Call (952) 451-8923  to schedule boiler service today.

Warning Signs Your Boiler Needs Attention Before Winter Hits

Boilers usually give hints before they fail. Watch for these problems:

Cold Radiators or Baseboards

Some rooms stay chilly even while the boiler runs.

Leaks or Puddles

Water collects around the unit or its piping.

Banging, Gurgling, or Whistling

Unusual sounds come from the boiler or the pipes.

Ignition or Pilot Trouble

The boiler struggles to start or shuts down on its own.

Rising Heating Bills

Costs climb with no change in how you heat your home.

An Aging System

Your boiler dates back to the original construction of the house.

Acting early can keep a minor repair from turning into a midwinter breakdown.

Hydronic Heating Repair From Radiators to Circulator Pumps

We service all makes and models of boilers, whether we installed them or not. Our technicians trace the real source of the problem so you only pay for the work your system needs. Typical repairs include:


  • Complete system diagnostics to pinpoint the cause of a heating problem
  • Leak and pressure issues that put your boiler and your home at risk
  • Circulator pump and zone problems that leave parts of the house underheated
  • Ignition and burner repairs to restore reliable starts
  • Thermostat and control fixes for steadier temperatures
  • Boiler tune-ups before heating season to catch wear early


Technician installing a white device inside an open electrical or HVAC unit

New Boiler Options Built Around Your Home's Heating Needs

Technician kneeling beside a water heater, adjusting plumbing in a utility room.

Modern boilers have come a long way, and most replacements pay for themselves over time through lower heating bills. As an authorized Carrier, Liberty, and Lennox dealer, we can offer reliable equipment designed to last. A replacement project can include:


  • Equipment sized to your home and your comfort goals
  • Key component upgrades when your existing system can be brought up-to-date
  • Smart thermostat installation for easier control of your heat
  • Careful removal of the old equipment and a clean installation
  • A walkthrough of your new system so you know how it works


Convert Your Old Boiler to a Modern Forced-Air Furnace

Many older homes in our region still rely on the original boiler. If yours is wearing out, switching to forced-air heat may be worth a look. Here is what a boiler-to-furnace conversion involves:


  • Removal of the old boiler, piping, and radiators
  • Installation of a new furnace sized for your home
  • New ductwork to carry warm air throughout the house
  • A cleaner look with the radiators gone and floor space recovered


We will help you decide whether to repair, replace, or convert, and we will stand behind whichever route you choose.

Tall white cylindrical water heater with connected pipes in a utility room.

Boiler Repair and Replacement FAQs

  • How long does a boiler last?

    Many boilers run for 20 years or more with good care, though lifespan depends on the model, water quality, and maintenance. If yours is aging and needs frequent repairs, replacement may be the better value.

  • Why are my radiators cold when the boiler is running?

    Trapped air, a circulator pump problem, or a zone issue can keep heat from reaching the radiators. A technician can find the cause and restore even heating.

  • Is it normal to find water around my boiler?

    No. Leaks should be checked promptly. If the leak is heavy, shut the boiler off if it is safe to do so and call us.

  • Should I convert my boiler to a furnace?

    It depends on the condition of your system, your budget, and the layout of your home. We can review your options and explain what a conversion would involve.

  • How often should a boiler be serviced?

    Most boilers benefit from a yearly tune-up before the heating season. Regular service helps catch small problems early and keeps the system running efficiently.
Black water heater icon with flame symbol and dial on the front.

Restore Reliable Heat to Your Home Today

Call (952) 451-8923 to schedule boiler repair, replacement, or conversion with a family-run team that treats your home with care.


Available Monday through Friday, 8 a.m. to 6 p.m.