Choosing the right RTU tonnage is the difference between comfortable tenants and endless complaints. This guide explains how 3, 4, 5, and 6 ton packaged rooftop units fit Toronto & GTA retail…

A clothing boutique, a dental clinic, an open-plan office, and a busy kitchen do not share the same HVAC load — even at the same square footage. Learn how Toronto Air Systems…

Equipment price is only one line on a commercial rooftop replacement. Crane time, curb adapters, gas pipe upsizing, electrical disconnects, duct transitions, economizer options, roof protection, and after-hours labour often move the…

Cold-climate heat pumps can heat and cool Toronto homes and light commercial spaces — if you pick the right architecture. This ultimate guide compares single-zone, multi-zone, and ducted systems for GTA winters…

Heat pumps cut cooling equipment clutter and can slash heating energy use — but they are not automatic for every GTA building. Learn the benefits, real winter performance expectations, and how Toronto…

Single-zone systems are simple: one outdoor unit, one indoor head (or one ducted air handler), one primary comfort target. Multi-zone systems share one outdoor condenser across two or more indoor units so…

Infrared gas heaters warm people and surfaces with radiant energy instead of trying to heat all the outdoor air. That is why they outperform freestanding “mushroom” style convection heaters on windy Toronto…

Non-vented (unvented) infrared heaters release combustion products into the space and rely on enough outdoor air exchange to stay safe and comfortable. Vented infrared heaters pipe flue gases outdoors, which suits more…

Covered patios and semi-enclosed dining areas need infrared gas heat that is both comfortable and safe. Toronto Air Systems designs clearance-correct, efficient layouts for homes and restaurants across Toronto and the GTA…