Residential HVAC Design in Ontario
Permit-ready mechanical drawings — F280 heat loss/gain, full duct layout, HRV design, and stamped by a PEO-licensed engineer — delivered in 3–5 business days.
Get a Free QuoteWhat's Included
- CSA F280-12 heat loss and heat gain calculations for every room and zone
- Full supply and return duct layout with HRAI-compliant duct sizing calculations
- HRV system design including dedicated exhaust and supply duct routing
- EEDS (Equipment Efficiency and Design Summary) documentation
- Schedule 1 — Heating and Cooling Equipment Summary
- Equipment sizing and selection recommendations
- Stamped and sealed drawings ready for building permit submission
- City comment responses and required revisions at no additional cost
Turnaround
3–5 business days from receipt of architectural drawings. Rush service is available for urgent projects.
Deliverables
- Stamped and sealed mechanical drawing set (PDF)
- CSA F280-12 room-by-room heat loss and gain report
- HRAI duct sizing calculation sheets
- HRV design summary with airflow balancing
- EEDS documentation
- Schedule 1 equipment summary
Codes & Standards
- OBC 2024 Part 9 — Housing and Small Buildings
- CSA F280-12 — Determining the Required Capacity of Residential Space Heating and Cooling Appliances
- ASHRAE 62.2 — Ventilation for Acceptable Indoor Air Quality in Residential Buildings
- CSA F326-M91 — Residential Mechanical Ventilation Systems
- HRAI Duct Design Manual
Who This Is For
Ontario homebuilders, custom home builders, architects, and homeowners applying for a building permit. If your project requires stamped mechanical drawings for residential HVAC, we provide exactly what your building department needs.
Frequently Asked Questions
What information do you need to start the design?
We need the architectural drawings (PDF or DWG) showing floor plans, ceiling heights, window and door locations, and building envelope specifications. A window schedule or glazing spec sheet is helpful if window-to-wall ratio is a concern.
Do your drawings meet Ontario Building Code requirements?
Yes. All residential HVAC drawings are produced in compliance with OBC 2024 Part 9, CSA F280-12, and ASHRAE 62.2. They are stamped and sealed by a PEO-licensed Professional Engineer and are accepted by Ontario municipal building departments.
What if the city comes back with comments or revision requests?
We address all city comments and required drawing revisions at no additional charge. Our goal is successful permit approval, not just drawing delivery.
Can you design for both forced air and HRV in the same package?
Yes. Our standard residential package includes both the forced air duct layout and a fully ducted HRV system design. These are coordinated together on the same drawing set.