Which heat pump for a home in London?
Updated October 24, 2026
In London, a heat pump is sized for -18 °C in winter and 30 °C in summer. Here is the load for typical homes and the Kanartic system that fits.
- Winter design temperature-18 °C
- Summer design temperature30 °C
- Heating degree-days3,809
- Electricity15.57 ¢/kWh
Source: HOT2000 London; NBC 2020 winter temperature where available.
Heating load in London
| Home | After 2010 | 1990 to 2010 | Before 1970 | DIY system | Price | Coverage |
|---|---|---|---|---|---|---|
| Condo 900 sq ft | 13,500 | 13,500 | 13,500 | ZERO 18,000 wall unit | $2,895 | 100 % |
| Bungalow 1,100 sq ft + basement | 16,900 | 19,800 | 39,500 | Z-PRO 27,000 · 2 zones | $4,675 | 100 % |
| Two-storey 1,800 sq ft + basement | 27,000 | 27,000 | 51,200 | Z-PRO 36,000 · 3 zones | $5,475 | 100 % |
| Two-storey 2,600 sq ft + basement | 39,000 | 39,000 | 67,800 | Z-PRO 36,000 · 3 zones + ZERO 12,000 wall unit | $7,824 | 100 % |
For the typical bungalow, the heat pump carries the house alone all winter in London.
Estimated savings
For this bungalow (10,600 kWh/yr heating need), the heat pump would save about $1,100 a year compared with electric baseboards, and $1,700 compared with heating oil ($1.80/L).
Rebates in your province (Ontario)
Here, rebates require a contractor: going DIY, your advantage is saving the installation cost.
- Home Renovation Savings Program – Heat Pump · IESO / Save on Energy + Enbridge Gas
$1,250 per ton, up to $7,500 (electric, oil, propane or wood heating); $500 per ton, up to $2,000 (Enbridge gas customers)
- Energy Affordability Program · IESO / Save on Energy
Cold-climate heat pump supplied and installed at no cost
- National Heat Pump Rebate (announced) · Gouvernement du Canada
$2,000; up to $10,000 for low- and median-income households
Install it yourself (DIY)
Kanartic DIY versions ship with pre-charged line sets and quick connectors. You mount the units, drill the wall, connect and plug in: no refrigerant handling.
How many BTU in London by floor area
500 sq ft800 sq ft1,000 sq ft1,200 sq ft1,500 sq ft1,800 sq ft2,000 sq ft2,400 sq ft
Other cities
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Frequently asked questions
What is the design temperature in London?
-18 °C in winter (January, 2.5%) and 30 °C in summer (July, 2.5%). These are the temperatures used to size heating and cooling.
Can a heat pump heat a house in London?
For a 1,100 sq ft bungalow built between 1990 and 2010, the Z-PRO 27,000 · 2 zones covers 100% of the load at -18 °C. Kanartic models keep heating at −30 °C.
Can I install a heat pump myself in London?
Yes, with Kanartic DIY versions: pre-charged line sets and quick connectors, no refrigerant handling. Check your province’s rebate conditions, which often require a contractor.