HVAC · DUCT WORK
Rooms that won't heat or cool no matter what you do with the thermostat? Almost always a ductwork problem — usually undersized return air or leaky joints losing 20–30% of the airflow before it ever reaches a register. Most older Toronto homes have ducting that was sized for the original equipment and can't move the air a modern higher-CFM furnace or AC needs to do its job. We design, fabricate, and install ductwork the right way: custom sheet metal for trunks and takeoffs, flex duct for retrofits where it makes sense, and a full Manual D duct design behind every system we install.
From a single return-air upgrade to a complete re-duct of a gutted century home, Caspian handles ductwork the way it was meant to be done: designed on paper, fabricated to fit, sealed properly, and balanced room-by-room.
Full Manual D duct design — trunk sizing, branch CFM, register selection — for new builds, additions, and complete retrofits. Sized to your equipment, not a rule of thumb.
The most common fix for "rooms that never get warm." We add or upsize returns, install bedroom transfer grilles, and rebalance the system so the blower can actually breathe.
Mastic and foil at every joint — not duct tape, which fails in two years. We seal trunks, takeoffs, plenums, and boots to recover the 20–30% of airflow most homes leak.
Trunks, plenums, transitions, and takeoffs cut and built to fit your home — no off-the-shelf compromises. In-shop fabrication for tight basements and tricky retrofits.
Insulated flex duct where it earns its place — basement retrofits, attic runs, and finished-ceiling additions where rigid sheet metal can't be routed cleanly.
Room-by-room airflow tuning. We install or adjust manual dampers at every branch so the rooms that need more air get more — and the basement stops getting all of it.
Before you spend a dollar on equipment or a vacuum truck, understand what's actually happening to the air between your furnace and your bedrooms.
The #1 reason rooms feel uncomfortable isn't insulation, the thermostat, or even the equipment — it's airflow. Ductwork is the most-overlooked part of any HVAC system, and it's where most of the comfort problems in Toronto homes actually live.
The common story in this city: a 1950s or 60s house with original ductwork sized for the original 60K BTU furnace, now feeding a modern 90K BTU furnace and a 3-ton AC. The new equipment is built to move significantly more CFM than the old trunks can physically pass. It can't, so it doesn't — and the rooms farthest from the furnace pay for it.
Return air is almost always the bottleneck. Most older homes have a single undersized central return in the hallway, and bedroom doors that close it off entirely. The blower starves, static pressure spikes, and the whole system runs hot, loud, and short. We add returns, upsize the trunk back to the air handler, and add transfer grilles or jumper ducts so every room can breathe.
And then there's the leakage. Duct leaks of 20–30% are standard in older Toronto homes — most of it in attics, crawlspaces, garages, and unfinished basements where the conditioned air just escapes into space you're not living in. Sealing with mastic and foil (the only methods that actually last) recovers that efficiency immediately, often more than a new furnace would.
Duct cleaning is one of the most over-sold services in the HVAC industry. It has its place. It also doesn't solve most of the things it's marketed to solve. Here's the straight version.
When it helps
When it doesn't
GET A QUOTE
Tell us which rooms are giving you trouble, the age of the home, and what equipment you're running — we'll diagnose the actual airflow problem and quote the right fix, not the most expensive one. No upsells, no "you need a whole new system" pitch.