Heat Pumps vs Baseboard Heating – Electricity Cost Comparison
Updated 2026‑04‑22
Heat pumps and electric baseboards both run on electricity, but they use it in very different ways. For Ontario households, the difference can be dramatic — especially during long heating seasons. This guide explains how each system works, how much electricity they typically use, and what that means for your monthly bill.
1. How electric baseboard heating works
Electric baseboards are simple resistance heaters. They convert electricity directly into heat at a nearly perfect efficiency of 100%. That means:
- 1 kWh of electricity → ~1 kWh of heat delivered
- Electricity use rises linearly with heating demand
- Cold weather dramatically increases consumption
Baseboards have no moving parts and require little maintenance, but they are one of the most expensive ways to heat a home in Ontario because they rely entirely on electricity consumption.
2. How heat pumps work
Heat pumps do not create heat — they move it. Even in cold weather, outdoor air contains usable heat energy. A heat pump extracts that heat and transfers it indoors using a refrigeration cycle.
This allows heat pumps to deliver more heat energy than the electricity they consume. Their efficiency is measured using the Coefficient of Performance (COP):
- COP 1.0 → 1 unit of heat per 1 unit of electricity
- COP 2.5 → 2.5 units of heat per 1 unit of electricity
- COP 3.0 → 3 units of heat per 1 unit of electricity
In Ontario, modern cold‑climate heat pumps often operate at COP values between 1.5 and 3.0 depending on outdoor temperature.
3. Electricity use comparison
Baseboard heating
Electricity use is straightforward:
Heat needed (kWh) = Electricity used (kWh)
Heat pump
Electricity use depends on COP:
Electricity used = Heat needed ÷ COP
Example: If your home needs 1,500 kWh of heat in a month:
- Baseboards: 1,500 kWh electricity
- Heat pump at COP 2.5: 600 kWh electricity
- Heat pump at COP 1.8 (colder month): ~830 kWh electricity
Even in cold weather, heat pumps typically use far less electricity than baseboards.
4. Seasonal performance in Ontario
Shoulder seasons (fall and spring)
- Heat pumps often achieve COP 2.5–3.5
- Electricity use can drop by 60–70% compared to baseboards
Winter (mild to moderate cold)
- COP usually ranges from 1.8–2.5
- Electricity use may be 40–60% lower than baseboards
Extreme cold periods
- COP may fall to 1.2–1.6
- Backup resistance heat may activate
- Savings shrink but usually remain positive
Ontario’s climate still supports strong annual savings because the highest‑COP months offset the coldest periods.
5. Cost comparison example
Let’s compare a typical Ontario home that needs 1,500 kWh of heat in a winter month. Assume electricity costs $0.12/kWh.
Baseboards
- 1,500 kWh × $0.12 = $180/month
Heat pump at COP 2.2
- 1,500 ÷ 2.2 = 682 kWh
- 682 × $0.12 = $81.84/month
Estimated savings
- $98/month saved
- ~55% reduction in electricity use
In milder months, savings can be even higher.
6. Why heat pumps save money even though they run more often
Heat pumps run for longer periods at lower output. This is normal and efficient. Baseboards cycle on and off at full power, while heat pumps modulate their output to maintain steady indoor temperatures.
Longer runtime does not mean higher electricity use — the COP is what matters.
7. When baseboards may still make sense
Baseboards can be practical in certain situations:
- cottages or seasonal properties
- rooms used infrequently
- very small apartments
- homes where installation of ductwork is difficult
But for whole‑home heating, heat pumps almost always use less electricity.
8. When heat pumps provide the biggest benefit
Heat pumps offer the strongest value for:
- homes currently using electric baseboards
- homes with high winter electricity bills
- households planning to cool in summer (heat pumps provide AC too)
- homes with open floor plans or ducted systems
Because heat pumps also replace air conditioning, many households see combined heating + cooling savings.
9. Using the Heat Pump Savings Calculator
For a personalized estimate, try the Heat Pump Savings Calculator. You can test:
- different COP values
- winter vs shoulder‑season scenarios
- different electricity prices
- your home’s estimated heating demand
This helps you understand realistic savings for your specific situation.