Air Conditioning Installation
An AC install isn't just bolting a condenser to a pad and running refrigerant lines. The single biggest factor in how well your AC performs — and how long it lasts — is whether it was sized correctly for your home. Most ACs in Halton Hills are oversized by 30–50%, which causes short-cycling, high humidity (the AC turns off before dehumidifying properly), uneven temperatures between floors, and shorter equipment life.
We do the math properly: Manual J heat-gain calculation on your home, ductwork capacity assessment, and right-sized equipment selection. The result is an AC that runs longer cycles at lower fan speeds — quieter, more comfortable, more dehumidified, and cheaper to operate. If you've ever had an AC that 'cools the house but it still feels muggy,' that's the symptom of oversizing. We don't do that.
When AC installation is the right call
Common reasons Halton Hills homeowners decide to install or replace AC:
- Existing AC is 12+ years old and you're tired of repair calls. Replacement parts for older R-22 systems are getting expensive (R-22 was phased out in 2020) and current high-efficiency units cost less to operate.
- No central AC at all. If you've been getting by with window units, central AC adds significant comfort, reduces noise, integrates with your existing ductwork, and improves home resale value.
- Major AC failure on an older unit — refrigerant leak at the coil, failed compressor, or controls failure on a 10+ year old system. Repair-vs-replace math usually favours replacement.
- Considering a heat pump. Modern heat pumps replace AC AND upgrade heating efficiency, with substantial rebates. Even if you weren't planning to replace your furnace, the AC end-of-life is a natural moment to evaluate the heat pump path.
- Adding cooling to a finished basement, attic conversion, or addition that doesn't have ductwork. Ductless mini-splits handle this well — see our ductless page.
- You want a more efficient system — current 18+ SEER2 units cut operating costs vs. older 10–13 SEER units, and qualify for utility rebates.
How an AC installation goes with us
- 01
In-home assessment
Manual J heat-gain calculation, ductwork inspection, electrical service check, conversation about comfort issues you've had with previous AC. 60–90 minutes, no charge.
- 02
Equipment options
We propose 2–3 options at different efficiency tiers and price points. Each comes with operating cost projections and any rebate eligibility. We don't push the most expensive — we recommend what fits the home.
- 03
Installation
Most central AC installs are completed in 6–8 hours. Outdoor condenser placed on level pad, indoor evaporator coil installed in the air handler/furnace, refrigerant lines run, electrical connections made, system commissioned and tested.
- 04
Commissioning
We charge the system to manufacturer specifications, verify subcooling and superheat, run the system through a full cooling cycle, and measure supply and return temperatures. This step gets skipped on a lot of installs and is the single biggest factor in long-term equipment health.
- 05
Walkthrough & follow-up
We show you the new thermostat, explain optimal set points, and come back at 30 days to verify everything is running correctly through the first month of cooling season.
AC brands we install
Lennox Premier Dealer for the premium tier, plus we install all the major mid-range brands:
What AC installation costs in Halton Hills
Central AC installation pricing depends on home size, efficiency tier, and any electrical or ductwork modifications:
- 2-ton 14 SEER2 entry-level central AC: $4,500–$5,500 installed (small to mid-size homes, basic comfort)
- 3-ton 16 SEER2 mid-tier central AC: $5,500–$7,500 installed (most common Halton Hills install)
- 4-ton 18+ SEER2 high-efficiency variable-speed: $7,500–$10,500 installed (larger homes, premium comfort, lower operating cost)
- Cold-climate heat pump (replaces AC + upgrades heating): $11,000–$20,000 before rebates, often $5,500–$13,000 net after rebate stacking
Electrical service modifications (rare for AC alone, but possible for heat pumps) and ductwork additions are quoted separately if needed. Fixed quote before any work starts.
AC Installation questions
How do I know what size AC I need?
The only correct way is a Manual J heat-gain calculation, which accounts for your home's square footage, insulation, window count and orientation, ceiling height, and Halton Hills' design conditions. Rough rule-of-thumb (1 ton per 600 sqft) is wrong more often than it's right and usually results in oversized equipment. We do Manual J on every install.
What's SEER2 and what tier should I pick?
SEER2 is the cooling efficiency rating — higher is more efficient. New minimum is 14 SEER2 in Canada. Most Halton Hills installs land in the 16–18 SEER2 range, which balances upfront cost with operating savings over the equipment's 12–18 year life. 20+ SEER2 variable-speed units are excellent in larger or premium homes but the payback period is longer.
Should I install a heat pump instead of AC?
Worth a serious look. A modern heat pump cools your home as well as a high-efficiency AC AND replaces or supplements your heating. Ontario rebates for heat pumps are substantial — typically $4,000–$7,500 in stacked value. If your existing AC is end-of-life and your furnace is also 10+ years old, doing a hybrid heat pump + furnace replacement together is usually the smartest long-term play. We'll show you the math during the consultation.
Will my existing ductwork handle a new AC?
Usually yes, but we always check. Older Halton Hills homes (Delrex, Park District, etc.) sometimes have ductwork sized for the original heating-only system, which can be undersized for AC airflow. We measure existing duct sizes and static pressure during the assessment. Minor modifications (return air additions, register sizing) are common; full duct replacement is rare.
Are there rebates for AC installation?
Direct AC-only rebates are limited in Ontario currently. The substantial rebate stack ($4,000–$7,500) is for heat pumps, including hybrid systems that pair a heat pump with a gas furnace. If you're replacing both AC and considering a furnace upgrade, the heat pump path becomes much more financially compelling than two separate replacements.
How long does AC installation take?
Most central AC installs are done in 6–8 hours, completed in one day. Heat pump installations are typically 1–2 days. We give you a firm timeline before booking.
What warranty comes with a new AC?
Manufacturer warranties on residential AC are typically 10 years on the compressor and 10 years on parts. We back our installation labour for 1 year as standard. Premium installs come with extended labour warranty options. We register every install with the manufacturer the day it's commissioned.
Ready to book ac installation?
Call us or submit a quick request. We'll get back to you within an hour during working hours.
Mon–Fri 7:00 AM – 7:00 PM · Saturday 8:00 AM – 5:00 PM · 24/7 emergency service available