Most of Markham's housing stock is newer, well insulated, and reasonably airtight, particularly the detached homes and freehold townhouses through Cornell, Berczy Village, Greensborough, and Cathedraltown. That matters more than people expect: a tight, well-insulated house has a much lower heating load, which is exactly the condition where a cold-climate heat pump performs well. Those same tight houses need fresh air, so we often pair the install with an HRV, a whole-home humidifier for dry winter air, or UV air purification.
Across Markham we work on the three most common types of HVAC systems: forced-air systems with a gas furnace and central air conditioner, heat pumps (ducted or ductless mini-split), and hydronic boiler systems. Dual-fuel setups are especially popular here: a heat pump handles most of the season and the existing gas furnace takes over only on the coldest days. In practice that covers the majority of Markham heating hours on electricity while keeping a reliable backup for a deep January cold snap. Whatever the system, we size it to a Manual J load calculation rather than matching the old unit's tonnage.
The older parts of Milliken, Markham Village, and central Markham are a different story, with 1970s and 1980s homes carrying original ductwork, aging equipment, and the occasional hot-water boiler feeding radiators. There we focus on load calculations, venting checks, and combustion safety before recommending any upgrade path, and we often replace the tank water heater at the same visit once the furnace venting changes.
On the commercial side, we maintain rooftop units and office HVAC for plazas and business parks along the Highway 7 and 404 corridor, from retail units near Pacific Mall to offices in Downtown Markham.
Our specialty 
