Calculate minimum outdoor air per ASHRAE 62.1 Ventilation Rate Procedure for commercial spaces. Covers all occupancy categories with zone and system outdoor air efficiency.
Calculate whole-building and local exhaust ventilation requirements per ASHRAE 62.2 for low-rise residential. The Canadian standard for HRV sizing and exhaust fan compliance.
Check HVAC system compliance against ASHRAE 90.1 energy efficiency requirements. Covers equipment efficiency, economizer requirements, and controls mandates for commercial buildings.
National Building Code Canada HVAC requirements by climate zone. Minimum insulation R-values, airtightness (ACH50), ventilation, and equipment efficiency requirements for all provinces.
Verify if HVAC equipment meets minimum efficiency standards for Canada and US. Covers SEER2, AFUE, HSPF2, COP, and EER requirements for furnaces, AC, heat pumps, and boilers.
Check blower door test results against NBC Canada 2.5 ACH50 requirement, Energy Star 1.5 ACH50, and Net Zero 0.6 ACH50. Calculate natural ACH from ACH50 test result.
Check duct leakage test results against Energy Star, Ontario SB-12, and IECC requirements. Calculate leakage as a percentage of system flow from duct blaster test data.
Check Ontario Supplementary Standard SB-12 compliance for new residential construction. Verify insulation, window, airtightness, and HVAC system requirements by climate zone.
Verify if equipment qualifies for Energy Star certification in Canada and the US. Covers all HVAC equipment categories with current qualification thresholds updated annually.
Canadian and US refrigerant phase-out timeline. R-410A production limits, A2L transition requirements, and EPA Section 608 compliance for service technicians.
Check if a heat pump qualifies for Canada Greener Homes, provincial, and utility rebates. Verify HSPF2 thresholds, cold climate ratings, and installation requirements by province.
Check compliance with BC Energy Step Code Steps 1-5. Calculate TEDI, TEUI, and GHGI from building characteristics. The most stringent residential energy code in Canada.
Check HVAC system compliance with the National Energy Code of Canada for Buildings. Covers equipment efficiency, envelope requirements, and prescriptive vs. performance path options.
Check HVAC system energy code compliance across Canadian and US jurisdictions. Compare prescriptive requirements for equipment efficiency, ductwork, and controls by code cycle.
Check HVAC system compliance with California Title 24 energy standards. Covers equipment efficiency, ductwork sealing, and controls requirements for cross-border project reference.
Check HVAC system compliance with the International Energy Conservation Code. Covers equipment sizing limits, duct insulation, and mechanical system requirements by climate zone.
Calculate minimum ventilation rates required by ASHRAE 62.1, 62.2, and NBC Canada side by side. Identify the governing code requirement for your building type and occupancy.
Calculate Canadian HFC production and consumption phase-down allowances under the Kigali Amendment. Track allowance reductions by year and refrigerant GWP classification.
Calculate refrigerant CO2-equivalent charge and check against F-gas style regulatory thresholds. Covers GWP-weighted quota tracking for HVAC and refrigeration equipment.
Determine which HVAC installations and replacements require a building or mechanical permit in Canadian jurisdictions. Covers common permit triggers and documentation requirements.
Verify HVAC equipment efficiency ratings against current Canadian and US minimum standards. Cross-check SEER2, AFUE, HSPF2, and EER against your specific equipment type and region.
Check insulation R-values against NBC Canada and provincial minimums by climate zone and assembly type. Covers walls, attics, foundations, and below-grade requirements.
Interactive commissioning checklist aligned with ASHRAE Guideline 0 and 202. Track functional testing, sequence verification, and documentation for new and retrofit HVAC systems.
Estimate whole-building energy performance for code compliance using the performance path. Compare proposed HVAC system energy use against a reference baseline building.
Calculate HVAC system contribution toward green building certification targets. Covers energy performance, refrigerant impact, and ventilation credits for common rating systems.
Estimate HVAC-related LEED credit contributions including energy performance, enhanced refrigerant management, and indoor air quality credits for Canadian LEED projects.
HVAC codes you actually need to know
Canadian HVAC compliance pulls from at least four different code bodies, and they do not always agree. NBC sets the floor. Provinces adopt and amend it. ASHRAE handles ventilation and energy. And then there is Energy Star on top of all that.
ASHRAE standards
ASHRAE 62.1 covers ventilation in commercial buildings. ASHRAE 62.2 covers residential. ASHRAE 90.1 sets energy efficiency minimums for commercial HVAC systems, and most Canadian provinces reference it in their energy codes. These tools help you run the numbers without buying the standards documents. Start with the ASHRAE 62.1 ventilation calculator for commercial spaces or the ASHRAE 62.2 residential ventilation calculator for homes, then confirm equipment efficiency with the ASHRAE 90.1 energy compliance calculator.
NBC Canada and provincial codes
The National Building Code 2020 requires 2.5 ACH50 airtightness for new homes in most provinces. Ontario's SB-12 adds insulation and HVAC efficiency requirements on top. BC's Energy Step Code goes further, targeting net-zero-ready construction at Step 5. The NBC Canada guide breaks down requirements by climate zone, and the airtightness compliance calculator checks your blower door result directly against these thresholds. If your project is in Ontario or BC, use the Ontario SB-12 calculator or BC Energy Step Code calculator for the specific provincial requirement.
Minimum efficiency thresholds
Canada phased out low-efficiency furnaces below 92% AFUE in most provinces. SEER2 replaced SEER for AC ratings in 2023. R-410A production limits are now in effect under the Montreal Protocol. The minimum efficiency checker keeps you current on all of it, and the equipment efficiency compliance checker cross-checks a specific model against multiple standards at once. For refrigerant-specific rules, see the refrigerant phase-out guide and HFC phase-down calculator.
Related tools you may need
- Before pulling a permit, check the HVAC building permit calculator to confirm what documentation is required.
- For rebate-eligible heat pump installations, check the heat pump rebate eligibility checker and Energy Star HVAC compliance checker.
- Working toward a green building certification? The green building HVAC calculator and LEED HVAC credit calculator estimate your project's contribution.
- For US cross-border projects, the Title 24 calculator and IECC compliance calculator cover the equivalent American standards.
- Wrapping up a project? Use the HVAC commissioning checklist to verify functional testing and documentation before handover.
Frequently Asked Questions
The National Building Code of Canada sets the federal baseline, and provinces adopt and amend it with their own supplementary standards, such as Ontario's SB-12 or BC's Energy Step Code. ASHRAE 62.1, 62.2, and 90.1 are referenced by many provincial energy codes for ventilation and equipment efficiency. Always confirm the specific code edition and any local amendments adopted by your municipality before finalizing a design. Start with the NBC Canada guide to identify your baseline requirement.
The National Building Code 2020 requires 2.5 ACH50 airtightness for new homes in most provinces under the prescriptive path, though this baseline is progressively tightening and several provinces have adopted stricter requirements. Ontario's SB-12 and BC's Energy Step Code both add requirements on top of the national baseline, so always verify your specific provincial and municipal requirement. Use the airtightness compliance calculator to check your blower door test result against all three thresholds at once.
Yes. SEER2 replaced SEER as the standard cooling efficiency metric starting in 2023, using updated test conditions that better reflect real-world ductwork static pressure. SEER2 numbers are generally lower than the equivalent SEER rating for the same physical equipment, so minimum efficiency thresholds were adjusted downward to match the new test procedure. Use the equipment efficiency compliance checker or minimum efficiency checker to verify a specific model against the current SEER2 minimum.
Yes, all AskHVAC.ca tools are fully responsive and work on any smartphone or tablet without an app install. They run entirely in your browser, and results can be exported to PDF or CSV directly from your phone. The interface switches between Imperial and Metric with a single tap. Use them freely at the job site, in the truck, or in the office.