District Air Systems Inc., HVAC contractor in Innisfil and Simcoe County
Cooling Services

AC Installation

The right size, the right refrigerant lines, and the right thermostat, from an installer who has done this thousands of times.

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TSSA Licensed · HRAI · WSIB
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TSSA #000290047
Gas Technician Licensed
HRAI Member
Heating, Refrigeration & AC Institute
WSIB Covered
Workplace Safety Insured
Up to $7,500 in Rebates
Ontario program terms apply
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About our ac installation service

An oversized AC short-cycles, leaves your home humid, and burns out early. We size every high-efficiency install to the home itself, then match it to properly sized ductwork and lineset. The result is quieter operation, better dehumidification, and lower running costs.

Humidity, not temperature, decides AC sizing near Lake Simcoe. A unit picked to match the tonnage of the old one will cool a Lefroy or Gilford home fast and leave it clammy, because it never runs long enough to pull moisture out. Our load calculations for shoreline homes routinely come back half a ton smaller than the equipment being replaced, paired with a two-stage compressor that runs longer at lower capacity. Inland Alcona and Barrie south-end builds are a different calculation again, driven by west-facing glass.

Rebates: qualifying equipment can draw Ontario incentives and federal financing, and we prepare the paperwork with your quote. See current Ontario HVAC rebates.

What's included

  • Sizing based on the home, not a tonnage match to the old unit
  • SEER2 ratings up to 20, ENERGY STAR® certified
  • 10-year parts, 2-year labour warranty
  • 0% financing OAC

How the visit works

  1. 1
    In-home assessment
    Ductwork inspection, load calculation, and site walk before quoting.
  2. 2
    One-day install
    Old unit out, new pad, new lineset if needed, all in a day.
  3. 3
    Commissioning
    Refrigerant weighed in to spec, airflow measured, thermostat programmed.

Where we provide ac installation

Innisfil is home base, and our trucks run the same routes daily across Simcoe County and north York Region.

  • Barrie Barrie's Kempenfelt Bay humidity makes correct sizing matter more than raw tonnage, especially in the west-facing Ardagh and Sunnidale homes.
  • Bradford West Gwillimbury Marsh humidity around Bradford loads a cooling system harder than the thermometer suggests, so we size for latent load, not just square footage.
  • Essa Farm and gravel dust across Essa fouls condenser coils quickly, which is why Angus and Thornton units lose capacity years before they should.
  • East Gwillimbury The newer East Gwillimbury builds have tight envelopes and big glazing, a combination that punishes an oversized air conditioner with short cycling.
  • Springwater Tree cover through Midhurst and Anten Mills keeps outdoor units cooler but drops leaf litter straight into them every autumn.
  • Newmarket Newmarket's mature neighbourhoods often have tight side-yard clearances, so condenser placement and service access get planned before install day.
  • Oro-Medonte Lakeside properties from Oro Station to Hawkestone deal with constant moisture off Lake Simcoe, which corrodes coils and contactors faster than inland.
  • New Tecumseth Alliston and Tottenham homes run long cooling seasons on open exposure, so we lean toward two-stage equipment that dehumidifies properly.

Need service today? We can be there.

Same-day appointments across Innisfil, Barrie, and Simcoe County, with live dispatch 24/7.