How Water Heater Efficiency Affects Your FortisBC Bill

Published: July 20, 2026 — CANRO Heating & Cooling — Greater Vancouver, BC

UEF Rating Impact

UEF (Uniform Energy Factor) measures water heater efficiency. A standard 0.63 UEF gas tank heater costs $250-400/year to operate. A condensing 0.90+ UEF gas tank heater costs $200-350/year. The difference of $50-100/year pays back the upgrade premium over 5-8 years.

Tankless Efficiency

Tankless gas water heaters achieve 0.90-0.95 UEF. Annual operating cost: $200-300 for an average family — the lowest of any gas water heater type. The higher upfront cost ($2,800-5,500) is offset by 20+ year lifespan and lower operating costs.

Operating Cost by Household Size

1-2 person household: gas tank $150-250/year. 3-4 person household: $250-400/year. 5+ person household: $400-600/year. Adding a recirculation pump increases operating costs by 10-20% but provides instant hot water at every tap.

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Safety Reminder

If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.