⚡ Official Rankings
10 Best Electricians in O'Fallon, MO (August 2026)
We compared 10 electricians serving O'Fallon and Saint Charles County, Missouri, and ranked the top providers by verified reviews, ratings, and local reputation — 3,225 customer reviews in all.
The 10 listed below hold an average rating of 4.8 out of 5, led by Design Aire Heating and Cooling. Updated for August 2026.
- Electricians ranked
- 10
- Average rating
- 4.8★
- Reviews analyzed
- 3,225
- Area codes
- 636, 314
#1
Design Aire Heating and Cooling
⭐ 5.0 · 877 reviews
103 Church St #20, O'Fallon, MO 63366
#2
Grasser Electric & Home Services
⭐ 5.0 · 524 reviews
60 Boone Hills Dr, St Peters, MO 63376
#3
#4
Braco Electrical & Contracting
⭐ 4.9 · 330 reviews
22 S Perry Cir, O'Fallon, MO 63366
#5
Gigawatts Electric LLC
⭐ 4.9 · 213 reviews
1025 Cool Springs Industrial Dr, O'Fallon, MO 63366
#6
#7
Extreme Electrical Contractors LLC
⭐ 4.8 · 142 reviews
5590 Salt River Rd, St Peters, MO 63376
#8
Wesling Electric Corporation
⭐ 4.7 · 69 reviews
1150 Birdie Hills Rd, St Peters, MO 63376
#9
#10