Boiler Installation & Replacement

Boilers deliver consistent, comfortable heat—perfect for Illinois’s cold winters and older homes with radiator or radiant floor systems. Whether you’re installing a boiler for the first time or replacing an aging unit, our Boiler Installation & Replacement service guarantees efficiency, safety, and lasting performance.

Boiler Replacement

Historic homes in areas like Springfield and Belleville often rely on boiler systems with cast-iron radiators or radiant floor heating. If your boiler is over 15 years old, you may face frequent repairs, inefficiency, and safety risks. Smart Heat of Illinois offers a turnkey Boiler Installation & Replacement service: we remove your old unit, assess your entire hydronic system (piping, pumps, expansion tanks), and install a new high-efficiency condensing boiler rated up to 95% AFUE. We obtain all necessary permits and ensure compliance with local building codes.

What We Offer

Our complete boiler replacement service includes:

• Detailed system assessment (riser piping, circulator pumps, air separators)
• Safe removal and disposal of old boiler (including refrigerant recovery and gas line decommissioning)
• New condensing boiler installation (Weil-McLain, Navien, Bosch) sized according to Manual J and hydronic loop calculations
• Integration with existing radiators or installation of new radiant floor loops
• Outdoor reset controls for maximum heating efficiency
• Combustion testing (CO levels, stack temperature) to verify >90% AFUE
• Homeowner walkthrough: setting controls, maintenance best practices, and safety checks

Signs You Need a Boiler Replacement

Consider replacing your boiler if you notice:

• Frequent leaks around the heat exchanger or visible corrosion on the boiler body
• Uneven heating—cold radiators or rooms that do not warm up properly
• Escalating fuel bills despite normal thermostat settings
• Kettling noises (loud banging or rumbling) indicating limescale or drum damage
• Rapid cycling or failure to maintain setpoint temperature

Why Choose Smart Heat of Illinois for Boilers?

Smart Heat of Illinois has specialized in hydronic heating solutions since 2010. Our family-owned company emphasizes honesty, fair pricing, and top-tier workmanship. Our technicians are certified in Weil-McLain, Navien, and Bosch installation standards—no shortcuts. We manage all permit applications and coordinate inspections to ensure your new boiler meets Illinois building codes. Financing options are available with 0% interest for 12 months on approved credit. Every installation is backed by a 10-year manufacturer warranty and a 1-year labor warranty, plus a free spring hydronic system check-up to guarantee peak performance next winter.