Air Conditioning Installation in Markham
Central AC and ductless mini-split installations by TSSA-certified professionals. Expert cooling solutions for every Markham home — from Unionville heritage homes to Angus Glen estates. Since 1999.
Expert Air Conditioning for Markham Homes
Markham's summers are intensifying — 30°C+ days are now routine from June through September, and Angus Glen estates or Cornell family homes without properly sized central air are miserable by mid-July. Whether you're upgrading an aging system in Unionville or installing AC from scratch in a newer build, Megacity HVAC delivers the right system for your home's size, ductwork, and budget.
We install central AC and ductless mini-split systems across all Markham neighbourhoods. Central AC is the best choice for most homes with existing ductwork from a furnace — it provides whole-home cooling at a consistent temperature. For older postwar homes in Thornhill that lack ductwork, or for finished basements and additions in newer subdivisions, ductless mini-splits deliver zone-by-zone cooling without the $5,000 to $10,000 cost of adding ducts.
Sizing matters. An oversized AC short-cycles and leaves your home clammy. An undersized unit runs constantly without reaching setpoint. Our technicians perform a proper Manual J load calculation factoring square footage, window exposure, insulation, and ceiling heights before recommending a system. Markham homes range from 1,200 sq ft townhomes to 4,500 sq ft custom builds — sizing it right is how we keep you comfortable and your hydro bill reasonable.
Central AC installations in Markham run $3,500 to $5,500. For Ontario summers we recommend a minimum 16 SEER rating, which uses 25% less electricity than baseline 14 SEER models. High-efficiency 18 to 21 SEER systems cost more upfront but pay back quickly for larger Markham homes. Every installation includes manufacturer warranty, our workmanship guarantee, and a post-install comfort check.
AC Pricing Guide
Free in-home assessment · No obligation
Central Air vs Ductless: Which Is Right for Your Markham Home?
The right system depends on your home's ductwork, budget, and how you use your space. We help you choose during a free in-home assessment.
Central Air Conditioning
Ductless Mini-Split
Not sure which option fits your Markham home? Free in-home assessments, no obligation.
Get a Free AC AssessmentAC Installation Across All Markham Neighbourhoods
We service every corner of Markham. Our techs know the housing stock, the common issues, and the fastest routes to reach you.
Markham Homeowners — Save on Your New AC
As a certified Enbridge Sustain partner, we help Markham homeowners access rebates on qualifying high-efficiency cooling equipment. We handle all the paperwork so you don't have to.
Learn About RebatesAC Installation Markham — FAQ
How much does AC installation cost in Markham?
Central AC installation in Markham typically runs $3,500 to $5,500 depending on system size, SEER rating, and any ductwork modifications. Ductless mini-splits start at $3,000 for single-zone and $6,000+ for multi-zone. Larger Markham homes above 2,800 sq ft may need a 4 to 5 ton unit closer to the top of the range. Free in-home estimates with transparent pricing.
What size AC do I need for my Markham home?
AC sizing depends on square footage, insulation, window exposure, and ceiling heights. Most Markham townhomes (1,400 to 1,800 sq ft) need a 2 to 2.5 ton unit. Two-storey detached homes in Cornell or Berczy (2,000 to 2,800 sq ft) typically require 3 to 3.5 tons. Executive homes in Angus Glen or Cathedraltown often need 4 to 5 tons or dual-system configurations. We perform a proper Manual J calculation on every free estimate.
Should I choose central AC or ductless for my Markham home?
If your home already has ductwork from a forced-air furnace, central AC is usually the most cost-effective ($3,500 to $5,500 installed). For older Thornhill or Markham Village homes without ducts, ductless mini-splits avoid the $5,000 to $10,000 cost of adding ductwork. Some larger homes benefit from a hybrid — central AC on the main floors with a ductless in a finished basement or addition.
How long does AC installation take?
Most central AC installations in Markham are completed in one day — typically 4 to 8 hours. This includes setting the outdoor condenser, connecting refrigerant lines, electrical wiring, thermostat setup, and full system testing. Ductless mini-split single-zone installations take 3 to 5 hours. Multi-zone ductless systems may take one to two days.
Can I get Enbridge rebates on a new AC in Markham?
Yes. As a certified Enbridge Sustain Trusted Partner, we help Markham homeowners access available rebates on qualifying high-efficiency heat pumps and cooling systems. Rebate amounts change annually — we walk you through current qualifying equipment and handle all paperwork. Combining a high-efficiency heat pump with your new AC often unlocks the largest rebates.
Local HVAC Services
- AC Repair Scarborough
- AC Repair Toronto
- AC Repair North York
- AC Repair East York
- AC Installation Scarborough
- AC Installation North York
- Furnace Repair Scarborough
- Furnace Repair Toronto
- Furnace Repair North York
- Furnace Repair Etobicoke
- Furnace Repair Mississauga
- Furnace Repair East York
- Heat Pump Scarborough
- Heat Pump North York
- Heat Pump Toronto
- HVAC Scarborough
- HVAC North York
- HVAC Toronto
- HVAC East York
Our HVAC Services
Ready for a New AC in Markham?
Call now for a free in-home estimate. Expert installation, transparent pricing, and the right system for your home.