Heating Services in Southeast Wisconsin's Lake Country

Reliable Heating Solutions Across Southeast Wisconsin

Is your furnace blowing lukewarm air, making a rhythmic banging noise that keeps you up at night, or driving your utility bills through the roof while half the house stays freezing? These aren't just minor quirks; they are active mechanical failures that require a trained eye before a small issue turns into a total system shutdown. O'Leary Plumbing, Heating & Electrical is ready to diagnose the problem and get your home comfortable again.

Since 1958, homeowners across Southeast Wisconsin have relied on our third-generation family business to fix what's broken and install what lasts. We don't guess at diagnostics, and we won't sell you a new unit if a simple repair makes more sense. Our technicians carry the right tools and replacement parts to solve complex heating failures on the spot.

Heating Furnace Repair & Service

When your furnace starts acting up, ignoring the warning signs usually leads to a bigger repair bill down the road.

We see it on almost every service call: a system that's short-cycling, a blower motor that won't shut off, or a burner that refuses to ignite. Nine times out of ten, these issues stem from a clogged flame sensor, a failing inducer motor, or a cracked heat exchanger. You'd be surprised how many companies misdiagnose a simple airflow issue as a dead system. Our technicians use specialized diagnostic tools to pinpoint the exact mechanical or electrical failure so you only pay for the repair you actually need.

If the system is too far gone or poses a carbon monoxide risk, we might suggest exploring Heating: Furnace Installation & Replacement instead. Otherwise, we focus on replacing the faulty components and restoring your heat safely.

Common failure points we check: * Flame sensors coated in carbon buildup * Faulty hot surface ignitors * Failing blower motor capacitors * Cracked or compromised heat exchangers * Tripped high-limit switches from poor airflow

Whether you need a quick fix for a faulty sensor or a major component swap, our Heating: Furnace Repair & Service team handles every call across Southeast Wisconsin.

Heating Furnace Installation & Replacement

Eventually, every furnace reaches the point where repairing it costs more than replacing it.

If you are facing climbing utility bills, uneven temperatures across different rooms, or an aging unit that requires constant attention, it is time to look at a new system. We don't just swap boxes; we calculate your home's exact square footage, insulation levels, and ductwork capacity to size the new unit perfectly. An oversized furnace will short-cycle and burn out early, while an undersized one will run constantly and drive up your energy costs.

Once your new system is in place, pairing it with annual Heating Maintenance & Tune-Up service will protect the warranty and keep it running at peak efficiency. We handle the entire installation process, ensuring every gas line and exhaust vent meets strict safety codes.

Signs It Is Time to Replace

* The unit is over 15 years old and requires frequent repairs * Energy bills are rising despite consistent thermostat settings * The furnace runs constantly but the house remains drafty * You hear excessive rattling, humming, or screeching from the blower

Explore our complete Heating Furnace Installation & Replacement coverage to see how we approach planned upgrades.

Heating Maintenance & Tune-Up

Preventative maintenance is the single most effective way to keep your heating system from failing when you need it most.

Skipping your annual check-up is the fastest way to void a manufacturer warranty and guarantee a breakdown. Dust and debris build up on the burners, electrical connections vibrate loose, and motors lose their lubrication over months of heavy use. We strip the unit down, clean the vital components, and test the safety switches to catch wear and tear before it causes a total shutdown.

If we find a failing component during our inspection, we can often perform a Heating Furnace Repair & Service right then and there. This proactive approach keeps your system running efficiently and extends its overall lifespan.

What our tune-up includes: * Cleaning the burner assembly and flame sensor * Testing the ignitor resistance * Inspecting the heat exchanger for stress cracks * Measuring blower motor amperage and voltage * Calibrating the thermostat and checking safety controls

Lock in proactive care with our Heating Maintenance & Tune-Up program.

Heating Boiler Repair & Service

Boilers provide incredible, even heat, but diagnosing a hydronic system requires specialized knowledge that many modern technicians lack.

If your radiators are cold, the baseboards are banging, or the boiler is leaking water, you need someone who understands water pressure, zone valves, and circulator pumps. A boiler failure is rarely a simple fix; it usually involves bleeding air from the lines, replacing a seized pump, or diagnosing a faulty aquastat. We troubleshoot both steam and hot water systems to restore the steady, quiet heat you expect.

If the boiler itself has completely failed and left your home freezing, we can immediately pivot to Heating Emergency Repair. We carry the specialized parts required to get hydronic systems back online quickly.

Common boiler issues we resolve: * Seized or noisy circulator pumps * Stuck zone valves causing uneven heating * Air trapped in the hydronic lines * Leaking pressure relief valves * Faulty ignition modules or pilot assemblies

Restore your home's hydronic heat with our reliable Heating: Boiler Repair & Service.

Heating Heat Pump Installation

Heat pumps offer an incredibly efficient way to manage your home's temperature by moving heat rather than burning fuel to create it.

A modern heat pump can handle both heating and cooling, making it a versatile upgrade for homes looking to move away from traditional fossil fuels. These systems extract ambient heat from the outside air and compress it to warm your home, delivering high efficiency and lower utility bills. We size and install these systems to integrate seamlessly with your existing ductwork or as part of a new build.

If your home has leaky or damaged airflow pathways, we strongly recommend Heating: Duct Repair & Sealing before installing a new heat pump. This ensures you actually get the high-efficiency performance you are paying for.

Why Choose a Heat Pump

* Consolidates heating and cooling into one system * Significantly lowers monthly utility costs * Eliminates the need for natural gas or propane combustion * Provides consistent, even temperatures year-round

Discover the long-term benefits of a Heating: Heat Pump Installation for your property.

Heating Geothermal Installation

Geothermal systems are the ultimate investment in home comfort, utilizing the stable temperature of the earth to heat and cool your home for a fraction of the traditional cost.

As IGSHPA-certified experts, we are uniquely qualified to design and install these complex ground-source systems. While the upfront investment is higher, the massive reduction in monthly energy bills means the system eventually pays for itself. We handle the entire process, from assessing your property for the loop field to connecting the indoor heat pump unit.

Because these systems are highly adaptable, we can integrate the indoor unit with forced air or hook it up to a Heating: Radiant Floor Installation. It is a permanent upgrade that transforms how your home uses energy.

The geothermal installation process: * Conducting a thorough site assessment and load calculation * Designing the vertical or horizontal ground loop field * Trenching and installing the high-density polyethylene piping * Setting the indoor geothermal heat pump unit * Integrating the system with your home's heat distribution network

Learn more about our cutting-edge Heating: Geothermal Installation capabilities.

Heating Radiant Floor Installation

Radiant floor heating transforms cold tile and drafty rooms into the most comfortable spaces in your home.

Instead of blowing warm air through dusty vents, radiant systems pump heated water through a network of tubing installed directly beneath your floors. This creates a silent, even blanket of heat that rises naturally, eliminating cold spots and drafts. It is the perfect upgrade for master bathrooms, basement remodels, or new garage workshops.

These systems are typically powered by a boiler, so we ensure your equipment is properly sized and offer ongoing Heating Boiler Repair & Service to keep the water flowing. We install the tubing loops meticulously to ensure perfectly even heat distribution.

Ideal spaces for radiant heat: * Master bathrooms with tile or stone flooring * Basement living areas on concrete slabs * Home additions lacking existing ductwork * Garage workshops that need consistent, quiet warmth

Explore the unmatched comfort of a custom Heating Radiant Floor Installation.

Heating Duct Repair & Sealing

Your heating equipment is only as effective as the ductwork that carries the air throughout your home.

Leaky, disconnected, or crushed ducts force your furnace to work twice as hard to heat your home, driving up utility bills and leaving certain rooms perpetually cold. We inspect your entire duct system to find where you are losing pressure and blowing conditioned air into your attic or crawlspace. By professionally sealing the joints and replacing damaged sections, we restore proper airflow and system efficiency.

Proper duct sealing is often the missing piece of the puzzle after a Heating Furnace Installation & Replacement to ensure the new unit performs to its full potential. Do not let bad ductwork ruin the efficiency of a brand-new heating system.

Signs your ducts need attention: * Rooms that are significantly colder than the rest of the house * Excessive dust building up around your vent registers * Whistling or rattling noises coming from the ductwork * Unexplained spikes in your monthly heating bills

Optimize your home's airflow with our Heating Duct Repair & Sealing services.

Heating Emergency Repair

When your heating system fails completely, it is not just uncomfortable; it is a serious risk to your home and your family.

A dead furnace can lead to frozen pipes, severe property damage, and unsafe indoor temperatures in a matter of hours. If you smell gas, hear violent banging from the unit, or your system has completely shut down, you need a professional immediately. Our technicians arrive with fully stocked trucks to diagnose the critical failure, address carbon monoxide risks, and get your heat restored safely.

Sometimes an emergency call reveals a cracked heat exchanger, meaning a Heating Furnace Installation & Replacement is the only safe way forward. We will walk you through your options honestly so you can make the right call for your home.

When to call for emergency service: * The system has completely lost power and will not reset * You smell raw gas or burning electrical components * The furnace is making loud banging or screeching noises * Your carbon monoxide detector has triggered

When you are left in the cold, trust our team for immediate Heating Emergency Repair.

Our Approach

When you call O'Leary Plumbing, Heating & Electrical, you are not dealing with a high-pressure sales team. We are a third-generation, family-owned business rooted in this community since 1958. Our technicians are trained to diagnose the root cause of the failure, explain the mechanics to you in plain English, and provide a clear, upfront price before any wrenches turn.

We believe in doing the job right the first time, whether that means a complex geothermal loop installation or a simple flame sensor cleaning. Our IGSHPA-certified professionals and licensed technicians treat your home with respect, wearing shoe covers, maintaining a clean workspace, and leaving your utility room better than we found it. We built this company by being honest, fair, and dependable across Southeast Wisconsin.

Related Services

Keeping a home running smoothly often requires looking beyond the HVAC system. If a heating failure led to frozen lines, our plumbing division handles comprehensive Drain Cleaning & Hydro Jetting to clear blockages and keep your pipes flowing.

Upgrading to a new heat pump or geothermal system often requires more power, which is why our electrical team manages Panel Upgrades & Replacement to safely handle the load. We also protect your home's plumbing and hydronic heating systems from hard water damage with professional Water Softener Installation & Service.

Get Your Heat Running Right Again

Do not let a failing system leave you freezing or drain your wallet with sky-high utility bills. Whether you need an emergency repair, a routine tune-up, or a complete system replacement, our technicians have the parts and the expertise to handle the job.

Stop guessing at what is wrong with your equipment and let a professional diagnose the real issue. Schedule your service call today with O'Leary Plumbing, Heating & Electrical.