Boiler Installation & Repair

Reliable boiler service that keeps your home warm with hydronic heating you can count on.

Boilers aren't like furnaces. They heat water instead of air, and they need someone who understands pressure, flow rates, and zone controls. A lot of HVAC contractors avoid boiler work because it requires different skills and tools. We don't. We install and repair boilers for homes that use radiators, baseboard heat, or radiant floor systems. A properly installed boiler heats evenly, runs quietly, and lasts decades if it's maintained. We size boilers correctly, match them to your distribution system, and make sure they're running at the right temperature and pressure before we leave.

Whether you're replacing an old boiler that's rusted out or installing a new one for a heating upgrade, we handle the entire process. That includes removing your old unit, installing the new boiler, connecting supply and return lines, running gas or oil connections, installing expansion tanks and circulators, and testing the system under load. We also repair boilers that aren't heating properly. Common problems include failed circulators, leaking pressure relief valves, dirty burners, and air in the lines. We diagnose the issue, explain what's wrong, and fix it so your heat comes back on.

When you call Northern HVAC for boiler service, you're working with someone who knows how these systems work. We've been installing and repairing boilers in northern Wisconsin for five years, and we know what breaks and how to fix it. Call us and get boiler service done right.

What We Offer:

  • New Boiler Installation & Replacement – We install modern, high-efficiency boilers sized correctly for your home's heating load and distribution system.

  • Boiler Repair & Troubleshooting – We diagnose and repair boilers that won't heat, won't ignite, leak water, or make unusual noises.

  • Circulator Pump Replacement – We replace failed circulator pumps that prevent hot water from moving through your heating zones.

  • Pressure Relief Valve & Expansion Tank Service – We test and replace pressure relief valves and expansion tanks that protect your boiler from overpressure.

  • Burner Cleaning & Combustion Tuning – We clean burners, adjust air-fuel ratios, and test combustion to make sure your boiler burns efficiently and safely.

  • Zone Control & Thermostat Installation – We install and program zone controls and thermostats so different areas of your home heat independently.

  • Boiler Maintenance & Annual Inspections – We perform yearly maintenance to catch problems early and keep your boiler running reliably through winter.

Why Choose Northern HVAC for Boiler Installation & Repair

  • Specialized Boiler Knowledge – Boilers require different expertise than forced air systems. We've been trained on boiler installation and repair, and we have the tools and experience to do the work correctly.

  • Proper Sizing & System Design – We calculate your heating load and match your boiler to your distribution system. An oversized or undersized boiler wastes energy and doesn't heat evenly.

  • Fast Emergency Boiler Repair – When your boiler stops working in the middle of winter, we treat it as an emergency. Most calls get same-day service so you're not left without heat.

  • Honest Diagnostics & Transparent Pricing – We diagnose the actual problem instead of guessing. We'll tell you what's wrong, what it costs to fix, and whether repair or replacement makes more sense.

  • Licensed & Insured HVAC Contractor – We're fully licensed and insured to install and service boilers in Wisconsin. Your work meets code, your warranty stays valid, and your home is protected.

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Furnace acting up? AC not cooling? Heat bill too high?

Call Northern HVAC and get a heating or cooling system that works for your home.

Furnace Installation & Replacement done by Northern HVAC