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Claim This BusinessAbout Mecc Alte Inc
Mecc Alte Inc operates as an alternator and power generation equipment manufacturer serving the McHenry County region and greater northern Illinois from its facility at 3450 Curran Road. Founded in 1981, this family-owned business holds an A+ rating with the Better Business Bureau and maintains active licenses through the Illinois Department of Financial and Professional Regulation. The company employs 12 technicians and support staff, with two dedicated service vans covering emergency calls across McHenry, Woodstock, Crystal Lake, Johnsburg, and surrounding communities.
What distinguishes Mecc Alte from conventional HVAC and electrical contractors is its exclusive focus on standby power systems and its direct manufacturer relationships. As an authorized dealer for Mecc Alte SpA, the world's largest independent producer of alternators ranging from 1 to 5,000 kVA, this shop accesses factory-direct parts inventory that most independents cannot match. The company specializes in industrial-grade synchronous alternators, gen-set controllers, and battery charging systems designed for prime and standby applications including marine, telecommunications, healthcare facilities, and data centers. All new installations include a five-year parts warranty backed by the manufacturer's Italian parent company.
Customer experiences reveal consistent themes in service quality. Carol Louise's 2023 review describes a technical support team's thorough diagnosis of a 24-year-old alternator failure, noting that staff walked her husband through step-by-step testing before recommending replacement, a process that earned her recommendation. Conversely, Mike K's 2022 experience with a failed generator purchase highlights persistent challenges in warranty resolution, with the reviewer citing extended hold times and finger-pointing between the distributor and manufacturer. These contrasting accounts suggest that outcomes may depend significantly on whether issues arise during standard installation versus post-purchase equipment failures.
What Customers Say
Two of four reviewers report positive experiences citing technical expertise and long-term equipment durability, while the remaining two reviews describe significant frustration with warranty claim processes and communication delays. Overall sentiment splits evenly at 2.5 stars per review, suggesting quality depends heavily on issue type and timing of service needs.
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
Standby Generator Installation
Complete residential and commercial standby power systems from 10kW to 500kW with automatic transfer switches and factory-configured alternators.
Generator Maintenance Contracts
Annual maintenance including oil changes, filter replacements, load bank testing, and compliance inspections for warranty preservation.
Emergency Generator Repair
Diagnostic services for no-start conditions, voltage irregularities, transfer switch failures, and engine mechanical issues.
Alternator Replacement
Original equipment and upgraded replacement alternators for industrial gen-sets, marine applications, and telecommunications infrastructure.
Gen-Set Controller Programming
Installation and configuration of digital control systems for automated startup sequencing, load management, and remote monitoring.
Battery Charging Systems
Industrial battery charger installation and maintenance for critical backup power applications including medical facilities and data centers.