Furnace Repair in Oconomowoc, WI

Oconomowoc winters are Lake Country winters at their most demanding. The glacial lake basins — Lac La Belle, Fowler Lake, and Oconomowoc Lake — create local cold pockets when lake surfaces freeze and cold air radiates downward, and the city's location in western Waukesha County means it sees some of the metro area's most sustained cold periods in January and February. Victorian-era lakefront estates, century-old summer homes now occupied year-round, and newer subdivisions east and south of downtown all depend on modern furnaces to survive Wisconsin winters.

The older homes along Oconomowoc Lake Road, Summit Avenue, and in the historic downtown near revitalized Wisconsin Avenue present the most complex furnace service scenarios in the city. Buildings that began as summer retreats were heated with limited systems — sometimes just wood stoves or simple space heaters — before being updated with oil, then gas heat over the decades. The multi-generation heating system history in these homes requires careful inspection at every service visit to verify that fluing, combustion air, and gas line sizing are appropriate for the current equipment.

Oconomowoc's 1990s and 2000s subdivisions feature more conventional two-stage and modulating furnaces, but these systems are at or approaching end-of-life. Inducer motor failures, cracked heat exchangers from years of service, and pressure switch hose deterioration are the calls we handle most often from this era of construction. For homes where the original system is still in place after 20-plus years, the heat exchanger inspection we perform is often the deciding factor in whether repair or replacement is the right recommendation.

Burkhardt Heating, Cooling, Plumbing & Electric has served Oconomowoc and all of Waukesha County since 1961. NATE-certified, all major brands, 24/7 emergency. Call 414-206-3049. GreenSky financing available.

Burkhardt Heating, Cooling, Plumbing & Electric is a third-generation family business that has served the greater Milwaukee area since 1961. Our NATE-certified technicians are trained on the latest heating equipment and diagnostic protocols from all major manufacturers. We offer straightforward pricing, honest repair-versus-replace assessments, and 24/7 emergency availability every day of the year — including the coldest nights of a Wisconsin winter. Call 414-206-3049 to schedule service or request emergency furnace repair.

Thermostat Issues and Diagnostics

A malfunctioning thermostat is one of the most common reasons a furnace stops working. Before assuming the worst, our technicians check thermostat calibration, wiring connections, and battery levels. We repair and install all major thermostat brands including Honeywell, Ecobee, Nest, and Emerson. If your furnace isn't turning on, is short-cycling, or won't reach the set temperature, the problem may be as simple as a thermostat replacement.

We service and install all major heating brands including Lennox, Carrier, Trane, Rheem, Goodman, American Standard, Bryant, York, Amana, Ruud, Coleman, Heil, Payne, and Tempstar. No matter what brand is in your home, our NATE-certified technicians have the training and parts to get it running.

My older Oconomowoc lakefront home has had multiple heating system upgrades over the decades. How do I know everything is safe?

Multi-generation heating conversions benefit from a comprehensive safety inspection covering the heat exchanger, flue venting, combustion air supply, and gas line connections. Burkhardt technicians are experienced with older homes in Oconomowoc and throughout Lake Country, and we can assess whether your current system meets modern safety standards.

My Oconomowoc furnace is making a high-pitched squealing noise. Is that serious?

A squealing noise from a furnace usually comes from a worn inducer motor bearing or blower motor bearing. Left unaddressed, a failing bearing leads to motor seizure and a complete furnace failure, often on the coldest night of the year. Burkhardt recommends having bearing noise investigated promptly before it progresses to a breakdown.

Does Burkhardt provide furnace replacement estimates in Oconomowoc?

Yes. Burkhardt provides in-home estimates for furnace replacement in Oconomowoc and throughout Waukesha County. Our technicians will assess your home's heat load, evaluate your current duct system, and recommend properly sized equipment. GreenSky financing is available for new systems.

Related Services

• All Services in Oconomowoc
• Furnace Installation in Oconomowoc
• Furnace Replacement in Oconomowoc
• Furnace Maintenance in Oconomowoc
• Furnace Tune-Up in Oconomowoc

Learn more about our HVAC services across southeastern Wisconsin.

Also Serving Oconomowoc-Adjacent Communities

Burkhardt also serves the following neighboring communities — same crews, same response times, same local knowledge:

• Okauchee Lake — Lake Country, on Okauchee Lake (Waukesha County). Same dispatch routing as Oconomowoc.

If your home is in Okauchee Lake, call 414-206-3049 just like our Oconomowoc customers do.