Free HVAC Tools for Ontario Builders & Homeowners
Design temperature lookup, quick heat loss estimator, heat pump sizing checker, and permit checklist — everything you need to understand your project before you commit to a permit package. No email required, no login, completely free.
This is the most accurate free heat loss tool available for Ontario builders. Unlike simplified estimators, it uses the full HRAI CSA F280-12 methodology — room by room, with actual infiltration calculations. It's what we recommend for anyone who wants to understand their numbers before commissioning a stamped report.
Full HRAI
Methodology
The single most common mistake on Ontario heat loss reports — wrong design temperature. Find the correct heating design temp, climate zone, and permit portal for any Ontario municipality.
Get a ballpark heating load for your home in seconds. Enter your floor area, construction type, and municipality — we calculate an estimated BTU/h range and equipment size. Use this for early planning and conversations with your contractor.
This is a planning estimate only. Your building permit requires a BCIN-stamped CSA F280 report based on your actual drawings and wall assemblies.
Get a Permit-Ready Quote →Enter your heat loss result and municipality — we check whether a typical cold-climate heat pump can handle your full design load, estimate rebate eligibility, and flag whether backup heat is needed.
Two print-and-keep references used by Ontario builders and homeowners every day. No email required — direct PDF download.
Ontario HVAC Permit Checklist
What every building department in Ontario needs for your new home HVAC permit submission. One page, checkbox format — review it before you submit.
Ontario Design Temperature Reference Sheet
All major Ontario municipalities with heating design temperature, climate zone, and permit portal type. Print-and-keep for builders, contractors, and designers.
PDFs will be available for download after site launch. Check back shortly or contact us and we'll email them directly.
Ready for the Permit-Ready Version?
These tools help you plan and estimate — but your building permit requires a BCIN-stamped CSA F280 report prepared by a qualified designer. Upload your floor plans and we'll deliver the complete permit package in 48 hours.