ACS Service LLC

ACS Service LLC operates as a heating contractor in Hammond, Indiana, delivering heating system repair, maintenance, and replacement throughout the Calumet Region. The company maintains a 4.8-star rating from 17 verified customer reviews, reflecting consistent service quality across residential calls in Hammond, nearby Lake County communities, and surrounding northwest Indiana neighborhoods. Service hours span 7:00 AM to 7:00 PM daily, providing accessibility for homeowners seeking timely heating assistance.

What distinguishes ACS Service LLC from neighboring contractors is the review accounts mentioning specific repair scenarios. Technicians diagnose and resolve equipment issues including failing A-coil components on aging cooling systems, furnace ignition failures during subfreezing weather, and dangerous carbon monoxide situations requiring complete heating system replacement. The company handles related cooling system tune-ups and water heater assessments during heating repairs, offering integrated environmental control solutions for homes needing multiple system evaluations.

Customer narratives reference specific technician Albert (Al), who resolved a furnace failure that dropped interior temperatures to 56 degrees when other contractors made multiple unsuccessful visits. Albert correctly identified an A-coil problem rather than furnace malfunction, completing repairs in under an hour at a significantly reduced cost compared to another area company's estimate. Another reviewer describes same-day arrival to address carbon monoxide hazards, with the technician extending inspection to water heater and cooling vents. The negative review cites an unreached emergency call on a Saturday evening, representing the sole concerning account among seventeen assessments.