Lennox
ENERGY STARLennox ML14KC1
Merit® Series · Single-stage · ENERGY STAR®
14.3+SEER2
Efficiency
14.3+ SEER2
Cooling
Single-stage
Sound
As low as 73 dB
Refrigerant
R-454B
Serving Markham & Surrounding Areas
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.
24/7 Emergency Service
Serving Markham & the GTA
TSSA Certified Technicians
5.0 Google & HomeStars
Customer Reviews·
5.0 / 5.0 · 104+ Google reviews
Markham AC Services
Expert Air Conditioning Installation 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.
Free in-home Manual J load calculation
Central AC installation from supported manufacturers
Ductless mini-split installation
Multi-zone ductless systems
AC replacement and old-unit removal
Smart thermostat setup and programming
Refrigerant line set installation
Electrical disconnect and breaker work
Annual maintenance plans
Enbridge Sustain $0-down financing
24/7 Emergency
Real answer, day or night — no extra fees for evenings or weekends.
Upfront Pricing
A fixed price before any work starts. You approve it first.
Authorized Lennox Dealer
TSSA-certified, background-checked techs and full warranty support.
5.0★ · 250+ Reviews
Top-rated on Google and HomeStars, serving the GTA since 1999.
Equipment We Install
The Air Conditioners We Install in Markham
Central AC and ductless systems we install across Markham & the GTA — with manufacturer-published efficiency ratings.
York
ENERGY STARYork YXV (Affinity)
Affinity™ · Variable-capacity · ENERGY STAR®
up to 20SEER2
Efficiency
Up to 20 SEER2
Cooling
Variable-capacity
Sound
As low as 53 dBA
Compressor
Lifetime warranty
Mitsubishi Electric
ENERGY STARMitsubishi M-Series (MSZ-GS)
M-Series · Ductless inverter · ENERGY STAR®
up to 28.4SEER2
Efficiency
Up to 28.4 SEER2
Type
Ductless inverter
Sound
From 19 dB(A)
Setup
Single & multi-zone
KeepRite
KeepRite N5A8T
Performance · Two-stage
up to 18SEER2
Efficiency
Up to 18 SEER2
Cooling
Two-stage
Sound
As low as 69 dB
Refrigerant
R-454B
Payne
ENERGY STARPayne PA5S
PA5S · Single-stage · ENERGY STAR®
up to 16.5SEER2
Efficiency
Up to 16.5 SEER2
Cooling
Single-stage
Sound
As low as 73 dB
Sizes
1.5 – 5 tons
Kepler
Kepler Vortex 16
Vortex 16 · Single-stage
13.4SEER2
Efficiency
13.4 SEER2
Cooling
Single-stage
Refrigerant
R-410A
Warranty
10-yr parts + compressor
All specifications are published by the manufacturer. We install and service these systems across Toronto & the GTA.
Our Process
How We Install Your New AC in Markham
1
Free In-Home Estimate
We visit, measure the space, and perform a Manual J load calculation to size the system correctly.
2
Choose Your System
We walk through brand, efficiency, and budget options — no pressure, just the right fit for your home.
3
Installation Day
Our techs set the outdoor condenser, connect refrigerant lines, wire the electrical, and set up the thermostat.
4
Test and Clean Up
Full system test, temperature verification, walkthrough with you, and complete cleanup before we leave.
Brands We Install
Trusted Equipment Brands We Install & Service
Authorized Lennox Dealer — with experienced installation, repair, and maintenance across our supported HVAC and water-heater brands.
FUJITSU
JOHN WOOD
$0
Down
Trusted Partner
Lease-to-Own Through Enbridge Sustain
Standard air conditioners are not covered by government rebate programs. As a certified Enbridge Sustain Trusted Partner, we make a new AC installation in Markham affordable with $0-down financing on approved credit.
- No upfront cost — $0 down on approved credit
- Maintenance and repairs included for the term
- Predictable, manageable monthly payments
Common Questions
AC 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 a rebate on a new AC in Markham?
A standalone air conditioner does not qualify for a government rebate — Ontario’s Home Renovation Savings Program rebates go to cold-climate heat pumps, not ACs. If you are replacing your AC, a cold-climate heat pump cools in summer and heats in winter and can qualify for up to $7,500, with the largest rebates going to oil-, propane-, or electrically heated homes (gas-heated Markham homes qualify for less). The rebate is applied for by a contractor registered with the program, so confirm your installer’s status. We will give you an honest read on what your home qualifies for, and we also offer Enbridge Sustain $0-down financing.
Get In Touch
Get a Free Installation Estimate in Markham
Tell us about your home and we will set up a free in-home estimate. Transparent pricing, no obligation — or call and talk to a real person now.
Call 24/7(416) 286-5665
Rated5.0★ on Google & HomeStars