HVAC is one of the most consequential renovation decisions for Ontario homeowners — and one of the most confusing. Here’s a 2026 breakdown.
Heat pumps: The 2026 conversation
Air-source heat pumps have become the dominant recommendation for Ontario homes replacing aging furnaces and central air. The reason: a heat pump provides both heating and cooling from a single system, and modern cold-climate units (rated to -25°C or lower) are genuinely viable in Ontario winters.
Cost: $5,000–$14,000 installed for a single-zone central heat pump system.
Rebates: Canada Greener Homes, Enbridge, and local utility programs can offset $2,000–$7,000+ of cost. Verify current programs before purchasing.
Operating cost: Typically lower than gas heating at current electricity/gas rate ratios in Ontario — though this varies by home and usage pattern.
Traditional gas furnace replacement
Still common where gas service is available and heat pump economics don’t pencil out.
Cost: $3,500–$7,500 installed for a mid-to-high-efficiency unit (95%+ AFUE).
OBC requirement: New furnace installations must meet current efficiency standards. Direct-vent combustion air is required in most new installations.
Ontario Building Code notes
- All HVAC equipment replacements require a permit in Ontario
- New installations must be inspected
- Combustion air requirements are specific and must be met
- Ductwork modifications have code implications
What are you upgrading? Share your HVAC project — heat pump, furnace, mini-split, or radiant. Contractor names, costs, and performance data all help.
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