HVAC Design Hamilton — Complete Mechanical Drawings for Your Permit. Century Brick to New Build. BCIN-Stamped. 48 Hours.
Upload your floor plans today. Get a firm quote in 24 hours. Receive duct design, mechanical drawings, MVDS and the CSA F280 heat loss calculation — the full package Hamilton Building requires, from Stoney Creek to Dundas.
Hamilton’s Housing Stock Is Century Brick — and Old Ducts Don’t Survive a Conversion Unexamined
Half of Hamilton’s permit activity happens inside houses built before 1950: solid-brick two-and-a-halfs on the lower city grid getting duplexed, wartime bungalows on the Mountain adding basement suites, Dundas and Ancaster homes getting rebuilt outward. In every one of those projects, the existing gravity-era ductwork is the weak point — and since OBC 2024, the plans examiner expects a real duct design, not just a heat loss number. A calculation alone tells you the load; the mechanical drawings show how the air actually gets to a third-floor room behind two wythes of brick.
Heat Loss Report With No Duct Design
A conversion or addition permit that shows loads but no distribution design gets questions: which runs serve the new suite, what CFM does each room get, where does return air come from? Missing drawings mean resubmission.
Examiner questions guaranteedReusing Gravity-Era Ductwork As-Is
Century Hamilton homes often have oversized, leaky trunk lines from converted gravity furnaces. Assuming they can serve a new suite or addition without verification produces starved rooms — and non-compliant designs.
Comfort complaints built inComplete BCIN Mechanical Package
Room-by-room CSA F280 at -17°C, full duct layout with per-room CFM, equipment selection, MVDS and Schedule 1 — drawn, stamped and formatted for Hamilton Building Division submission.
Accepted first submissionExactly What Hamilton Building Division Expects to See
Duplex and triplex conversions in the lower city, basement suites on the Mountain, additions in Dundas, Ancaster and Waterdown, and new builds in Binbrook — one complete mechanical package for all of them.
Room-by-Room CSA F280 Heat Loss & Gain
Every room calculated separately at Hamilton’s -17°C design temperature — walls, windows, ceiling, floor, infiltration.
Equipment Sizing Sheet
Right-sized furnace, heat pump, boiler, or AC matched to the calculated load — not a square-footage guess.
Duct or Hydronic Layout Drawings
Fully dimensioned supply and return layout with airflow for every room per HRAI standards.
MVDS & Ventilation Design
The Mechanical Ventilation Design Summary — mandatory on every Ontario new-home permit since January 1, 2025 — plus HRV/ERV selection.
Schedule 1 & BCIN Stamp on Every Page
Signed designer declaration and BCIN stamp throughout — exactly what Hamilton Building Division requires before issuing your permit.
Solid-brick walls with no cavity insulation carry loads a modern-house rule of thumb misses badly — and the new suite gets its own independently controlled system, drawn run by run.
Serving Hamilton, Stoney Creek, Dundas, Ancaster & Waterdown
Hamilton’s conversion boom runs on the full package: the city wants to see the CSA F280, the duct design serving each unit, ventilation with an MVDS, and a signed Schedule 1. We produce all of it from your floor plans, BCIN-stamped, in 48 hours.
Escarpment geography matters here — lower-city lake effect and Mountain exposure are not identical conditions, and century masonry changes the envelope math entirely. Every room is calculated with its real assembly, not a subdivision default.
Only Need the Heat Loss Report?
The full HVAC design package is $695 flat. If your Hamilton project only requires the certified CSA F280 heat loss calculation, that’s $395 — see the Hamilton heat loss page. Same 48-hour delivery.
→ Order a certified heat loss calculationHVAC Design & Permits in Hamilton — Answers Before You Ask
The questions Hamilton homeowners and builders ask most — answered in plain language.
What’s the difference between this and the $395 heat loss report?
The $395 report is the certified CSA F280 calculation only. The $695 package adds the full mechanical design: duct layout with per-room CFM, equipment selection, ventilation design with MVDS, and stamped drawings — what Hamilton asks for on conversions, additions and new builds. Just need the report? →
Does a Hamilton duplex or triplex conversion need mechanical drawings?
Yes — each new unit needs independently controlled heating shown on a drawing, its own heat loss numbers, and ventilation documentation. Extending the existing furnace to a new unit without a design is the most common Hamilton resubmission.
Can you design around existing century-home ductwork?
Where it verifies, yes — we assess the existing trunk capacity in the design and reuse what works. Where it doesn’t, the drawings show exactly what to replace, so your contractor prices the real scope instead of discovering it mid-job.
How fast can I have the permit package?
Firm quote within 24 hours of uploading your plans; complete BCIN-stamped package within 48 hours of payment. If we miss the 48 hours, it’s free.
Upload Your Plans. Hamilton Permit Package in 48 Hours.
Get the duct design, mechanical drawings and certified CSA F280 calculation Hamilton Building Division requires — conversions, additions and new builds, BCIN-stamped throughout.
- Free quote — no commitment to buy
- CSA F280 at Hamilton’s correct -17°C design temperature
- MVDS and Schedule 1 included
- BCIN-stamped on every page
- 48-hour delivery after payment