One Team for Your Whole Home
Plumbing, heating, cooling, electrical, water quality, drains, water heaters, well & septic, geothermal and generators — one family team in East Troy, WI.
Four trades, one family name.
From a dripping faucet to a no-heat night, a panel upgrade to cleaner water — our licensed crews handle every essential system in your home, so you only need one number.
01Plumbing
Drain cleaning, repiping, leak detection, fixtures, water heaters, well pumps and emergency repairs.
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02Heating
Furnace, boiler, heat pump and radiant in-floor systems installed, serviced and repaired for our cold Wisconsin winters.
Learn MoreCooling
AC install, repair and high-velocity comfort — plus maintenance plans to keep you cool all summer.
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04Electrical
Panel upgrades, generators, EV chargers, dock & pier wiring, inspections and whole-home repairs.
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05Water Quality
Softeners, iron filtration, reverse-osmosis drinking water and UV systems for cleaner water.
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06Drain & Sewer
Camera-guided drain cleaning, sewer clearing, and clog diagnostics for stubborn backups.
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07Water Heaters
Tank, tankless, hybrid and heat-pump water heaters — repaired or replaced, often same day.
Learn MoreBrowse Everything We Do
From plumbing and heating to cooling, electrical and water quality — tap any service for details, options, and the communities we serve it in.
Water Quality
›- › Whole-House Water Filtration in Southeast Wisconsin
- › Iron Filter & Iron Removal
- › Reverse Osmosis Installation
- › Well Chlorination
- › Well Water Testing
- › Water Softener Installation & Service
- › UV Water Purification
- › Water Quality Maintenance Plans
- › Well Chlorination in Southeast Wisconsin
- › Reverse Osmosis Installation in Southeast Wisconsin
Electrical
›- › Whole-House Generator Installation
- › EV Charger Installation
- › Inspections & Code Compliance
- › Dock & Pier Wiring
- › Ceiling Fan Installation
- › Wiring Repair & Service
- › Panel Upgrades & Replacement
- › Pool & Spa Wiring
- › Inspections & Code Compliance in Southeast Wisconsin
- › Dock & Pier Wiring in Southeast Wisconsin
AC
›- › iWave Air Purifier Installation in Southeast Wisconsin
- › Ductless Mini-Split Installation
- › AC Repair & Service
- › High-Velocity AC Installation
- › AC Emergency Repair
- › AC Installation & Replacement
- › AC Maintenance & Tune-Up
- › AC Installation & Replacement in Southeast Wisconsin
- › AC Repair & Service in Southeast Wisconsin
- › Ductless Mini-Split Installation in Southeast Wisconsin
Heating
›- › New Construction & Remodeling HVAC in Southeast Wisconsin
- › Furnace Installation & Replacement
- › Duct Repair & Sealing
- › Heat Pump Installation
- › Furnace Repair & Service
- › Heating Emergency Repair
- › Heating Maintenance & Tune-Up
- › Boiler Repair & Service
- › Geothermal Installation
- › Radiant Floor Installation
Plumbing
›- › Sink Installation in Southeast Wisconsin
- › New Construction & Remodeling Plumbing in Southeast Wisconsin
- › Toilet Repair & Installation in Southeast Wisconsin
- › Sewer Line Repair & Inspection
- › Leak Detection & Repair
- › Garbage Disposal Repair & Installation
- › Frozen Pipe Repair
- › Fixture & Faucet Installation
- › Pipe Repair & Repiping
- › Septic System Repair
Not sure what you need? Call (262) 642-7747 and a real O'Leary team member will help — free installation estimates, 24/7 emergency service.
What's essential to you is essential to us.
Heat in January. Water you can trust. Power that stays on. These aren't luxuries — they're the systems your family relies on every day. O'Leary Plumbing, Heating & Electrical was built to keep all of them running, with the care you'd expect from neighbors who've lived here for three generations.
"For three generations we've treated every home in our lake-country communities like our own. Plumbing, heating, cooling, water and electrical — what's essential to you is essential to us."
One Family, Every System
Plumbing, heating, cooling, water and electrical — all from the same trusted crew. One call covers the whole house, no juggling contractors.
Three Generations of Know-How
Since 1958, the O'Leary name has been handed down with the trade. Decades of local experience on Wisconsin's homes, wells, and lake-country systems.
Honest, Up-Front Pricing
Free installation estimates and clear pricing before we begin. We explain the options in plain language so you decide with confidence.
We Stand Behind Our Work
Licensed, bonded and insured. We treat your home like our own — clean, on time, and there 24/7 when an emergency can't wait.
One call for every essential system.
Call O'Leary or request service online and a real team member will help you schedule. Free installation estimates and 24/7 emergency service across East Troy, WI and the surrounding lake country.