Oncourse Heating, Cooling, Plumbing
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Oncourse Heating, Cooling, Plumbing has earned its place as Naperville's premier full-spectrum home comfort provider, amassing a flawless 5.0-star rating across 1,818 verified client reviews. The company operates with licenses spanning Illinois' DuPage and Will counties, delivering heating, cooling, and plumbing solutions to residents throughout Naperville, Aurora, and surrounding western suburbs since establishing their regional presence. Their team of licensed technicians averages over 15 years of field experience, ensuring every service call, from routine maintenance to complex system replacements, meets the rigorous standards this high-volume operation demands.
What distinguishes Oncourse from neighboring contractors is their multidisciplinary capability and rapid-response philosophy. Unlike shops that sub-contract plumbing or limit themselves to residential systems, this firm maintains in-house expertise across heating, cooling, and plumbing, enabling single-visit resolutions for homes experiencing multiple system failures. Their dispatch protocol prioritizes same-day arrivals for emergency calls, particularly during the extreme temperature stretches that test Naperville's aging housing stock. The company backs all labor with a written workmanship guarantee, reflecting confidence in their technicians' training and parts quality.
Client narratives underscore the responsive, meticulous approach that generated their exceptional rating. When an 86-year-old Naperville widow lost furnace heat during sub-zero December weather, technicians Michael Wier and Drew Polk spent an entire day replacing her 1952-vintage boiler, demonstrating the complex retrofits this team routinely executes. Reviewer Moe Matariyeh noted Technician Kevin arrived within hours of an evening emergency call, then proactively identified and repaired a secondary issue before it escalated, a diagnostic thoroughness repeated across dozens of five-star accounts mentioning technicians Raul, Garry Norris, and Miguel Melchor.
What Customers Say
1,818 reviewers award a perfect 5.0-star average, with nine documented accounts explicitly praising same-day or emergency response times. Technicians Raul, Kevin, Michael Wier, and Garry Norris each receive multiple name-specific recommendations, indicating consistent workforce quality. Zero negative reviews appear in the sampled feedback, with praise clustering around diagnostic explanation, respect for homes, and efficient repairs.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| TuesdayToday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Services
Furnace Repair & Installation
Diagnosis and replacement of furnaces including older boilers and emergency heating restores.
Air Conditioning Service
Cooling system repairs, refrigerant handling, and AC replacements for Naperville summers.
Plumbing Repairs & Water Heaters
Leak repairs, drain clearing, and traditional or tankless water heater installs.
Boiler System Replacement
Specialized retrofits for historic homes with vintage heating systems installed pre-1960.
Same-Day Emergency Calls
Priority dispatch for heating failures, leaks, and otherurgent same-day household issues.
Preventive Maintenance
Seasonal tune-ups for heating and cooling systems to extend equipment lifespan.