5 AC Installation Contractors in St. Catharines, NY
4.5 avg rating
·3,499 total reviews·3 offer 24/7 serviceTop-Rated AC Installation Contractors in St. Catharines
#1
Mr. Furnace Heating and Air Conditioning
4.8(2,827 reviews)
24/7 Highly Rated
“With 2,827 reviews averaging 4.8 stars, customers frequently mention same-day emergency service. Positive reviews cite technician skill and clear explanations,…”
28 Dunkirk Rd, St. Catharines, ON L2R 1A1, Canada
#2
MacKay Heating & Cooling
4.8(399 reviews)
24/7 Highly Rated
“All five sampled reviewers awarded 5 stars, with technicians named in multiple reviews: Tyler (same-day quote), Chris and Zack (next-day installation), Ryan…”
2517 First Street Louth, St. Catharines, ON L2R 6P7, Canada
All AC Installation Contractors (5 total)
Boyko's Heating and Air Conditioning
4.8(59)
“Fifty-nine reviews averaging 4.8 stars show strong customer satisfaction. Twelve reviewers specifically…”
15 Kilbourne Crescent, St. Catharines, ON L2M 3E3, Canada
AC Installation Costs in St. Catharines
New central AC installation costs in St. Catharines, by system type and brand.
| Service | Low | Average | High |
|---|---|---|---|
Window unit | $168 | $392 | $784 |
Ductless mini-split (single zone) | $2,240 | $5,040 | $8,960 |
Central AC replacement (existing ducts) | $3,920 | $7,280 | $13,440 |
Central AC new install (with ductwork) | $7,840 | $13,440 | $22,400 |
Carrier (residential) | $4,256 | $6,944 | $11,760 |
Trane (residential) | $5,600 | $9,856 | $15,232 |
Lennox (residential) | $3,920 | $7,280 | $13,440 |
Rheem (residential) | $3,584 | $6,160 | $10,080 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Frequently Asked Questions
New AC installation in St. Catharines costs $168-$22,400 depending on system type. Window units run $150-$700, ductless mini-splits $2,000-$8,000 per zone, central AC replacement with existing ducts $3,500-$12,000, and full new installs with ductwork $7,000-$20,000. SEER rating, tonnage, and brand significantly affect pricing.