11 HVAC Service Contractors in St. Charles, IL
Top-Rated HVAC Service Contractors in St. Charles
Mendel Plumbing, Heating & Electric
“The overwhelming majority of 5,561 reviews award five stars, with 99% of customers reporting satisfaction. Reviewers frequently praise specific technicians by…”
McNally's Heating and Cooling
“Every client rating across all four displayed reviews awards five stars. Customers consistently reference specific team members, Russ, Garett, Luis, Chris,…”
All HVAC Service Contractors (11 total)
TDH Mechanical, Heating and Cooling Contractors
“Nearly all five-star reviews cite specific technicians, especially Wally, praising his dual role as both…”
Service Plus Heating & Cooling
“All 193 reviews carry 5-star ratings, reflecting perfect reviewer satisfaction. Customer accounts emphasize…”
Cool Operator Heating and Cooling Inc.
“Of 144 total reviews, the aggregate rating sits at 4.3 stars, indicating a majority of satisfied clients.…”
Eco Temp HVAC
“Every reviewed technician earned a perfect 5-star rating, with Jordan, Tyler, Marco, and Shawn each named by…”
American Mechanical Heating & Cooling
“All 59 reviewers award 5-star ratings, with Ricardo named as the responding technician in every detailed…”
Performance Heating & Air
“Forty-three client reviews yield a perfect 5.0 average rating. Reviewers consistently cite thorough cleanup…”
Aqua Knight Plumbing, Sewer, HVAC Services & Protection
“Both customer reviews award perfect 5-star ratings, with one client highlighting emergency response…”
HVAC Service Costs in St. Charles
General HVAC service pricing across maintenance, repair, and installation in St. Charles.
| Service | Low | Average | High |
|---|---|---|---|
Service call / diagnostic | $81 | $130 | $216 |
Routine tune-up (single system) | $76 | $135 | $216 |
Standard repair (avg) | $162 | $648 | $1,296 |
Major repair (compressor, heat exchanger) | $1,620 | $2,700 | $3,780 |
New system installation (mid-range) | $7,020 | $11,340 | $15,120 |
Full HVAC replacement AC + furnace combined | $12,517 | $14,504 | $15,228 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.