Renfrew County homeowners have more heating options today than at any point in the past, largely driven by advances in cold-climate heat pump technology and the grant programs that make switching from oil financially viable. Each system type has its own cost profile, efficiency characteristics, fuel requirements, and maintenance needs. Understanding the trade-offs helps you make the right decision for your property, budget, and fuel situation.
Natural Gas Furnace
Best for: Homes in Pembroke, Petawawa, Renfrew, Arnprior, and other communities with Enbridge natural gas distribution.
Natural gas is the lowest-cost fossil fuel for heating in Ontario on a per-BTU basis, and gas furnaces are among the most cost-effective heating systems where the fuel is available. Modern high-efficiency models (95%+ AFUE) extract heat from combustion gases so thoroughly that they condense water vapour — a feature that requires condensate drainage but significantly cuts annual fuel use compared to older mid-efficiency equipment.
Natural gas is simply not available across most of Renfrew County. Once you leave the main towns and their surrounding areas, you move into propane and oil territory. If your property has gas service, a high-efficiency gas furnace is typically the most economical choice unless grant-funded heat pump conversion makes a compelling case.
- AFUE range: 80%–98%
- Fuel cost: Low (lowest of fossil fuels in Ontario)
- Installation cost: $3,000–$8,000
- Licence required: TSSA G2 or G1
Propane Furnace
Best for: Rural properties without natural gas access — the most common fuel alternative in much of Renfrew County.
Propane furnaces use the same equipment as natural gas furnaces, adjusted for propane combustion characteristics. Installation costs are comparable to gas. The meaningful difference is ongoing fuel cost: propane typically runs 1.5–2× more expensive per BTU than natural gas in Ontario, and rural delivery adds transportation cost. Propane tank rental or ownership also adds to the annual cost of ownership.
For homeowners currently on propane, it is worth running a comparison between propane furnace operating costs and heat pump operating costs — particularly when grants are available. In many Renfrew County scenarios, an air-source heat pump delivers lower annual energy costs than a propane system even before grant support is applied.
- AFUE range: 80%–98%
- Fuel cost: Moderate to high (higher than gas; lower than electric resistance)
- Installation cost: $3,000–$8,000
- Licence required: TSSA G2 or G1
Oil Furnace
Status: Being phased out — OHPA grant makes switching to a heat pump financially compelling for most households.
Oil furnaces have historically been the dominant heating system across rural Renfrew County, and a large number of properties still run oil-fired equipment, much of it 20 or more years old. Modern oil furnaces have improved considerably in efficiency, but oil prices remain volatile and on-site tank storage presents leak and contamination risk. Oil furnace equipment typically lasts 15–20 years.
If your oil furnace is nearing end of life — or has already failed — this is the moment to seriously evaluate the heat pump option. The OHPA grant provides up to $15,000 specifically for households switching from oil to an electric heat pump, with the Canada Greener Homes Loan providing up to $40,000 interest-free to cover the remainder. For many Renfrew County homeowners, this combination makes replacing an oil furnace with a heat pump the economically superior choice over a like-for-like oil furnace replacement.
- AFUE range: 80%–87% (modern units)
- Fuel cost: High and volatile
- Installation cost: $4,000–$7,000
- Licence required: TSSA Oil Burner Technician (OBT)
Air-Source Heat Pump
Best for: Most Renfrew County homes, particularly those currently on oil or propane — especially with OHPA and Greener Homes Loan grant support.
Air-source heat pumps work by extracting heat energy from outdoor air and moving it indoors — even when outdoor temperatures are well below freezing. Modern cold-climate heat pump models are rated to −25°C or lower, covering the vast majority of winter temperatures experienced in Renfrew County. The technology is far more efficient than resistance electric heating: for every unit of electrical energy consumed, a quality heat pump delivers 2–3 units of heat energy (a coefficient of performance of 2–3). As temperatures drop below −15°C or so, efficiency decreases and backup heat (either a retained furnace or built-in electric resistance strips) provides supplemental warmth during the coldest periods.
For homes with existing forced-air ductwork, ducted air-source heat pumps are the most seamless upgrade path. Homes without ducts — or those adding a room or zone — can use ductless mini-split systems (see below).
- COP range: 2–4 (varies with outdoor temperature)
- Fuel: Electricity
- Installation cost: $5,000–$14,000 (before grants)
- Grant availability: OHPA (up to $15K), HER+, IESO Save on Energy
- Licence required: Licensed HVAC contractor, ESA permit for electrical
Ductless Mini-Split Heat Pump
Best for: Homes without existing ductwork, room additions, cottages, or supplemental heating zones.
Ductless mini-splits consist of an outdoor compressor unit connected by refrigerant lines to one or more indoor wall-mounted air handlers. There is no ductwork required. Single-zone systems can heat and cool one room or open-plan area; multi-zone systems can serve an entire home with multiple indoor units connected to one outdoor compressor. Like all modern heat pumps, cold-climate mini-split models operate effectively at Renfrew County winter temperatures.
Mini-splits are an increasingly practical choice for older rural homes where adding ductwork would be prohibitively expensive, and for seasonal properties that need zone-based heating control.
Ground-Source (Geothermal) Heat Pump
Best for: New construction, major renovations, or properties with appropriate land — for homeowners prioritizing maximum long-term efficiency.
Ground-source systems extract heat from the ground (which maintains a stable temperature year-round, typically 7°C–10°C in Ontario) rather than from outdoor air. Because ground temperature is far more stable than air temperature, geothermal systems maintain high efficiency even through deep cold snaps — they don't experience the efficiency drop that air-source systems encounter at extreme temperatures. Installation requires either horizontal ground loops (trenched across a suitable land area), vertical bore holes (drilled by a licensed water well driller), or a pond/lake loop where applicable.
The higher upfront cost ($15,000–$35,000) and longer payback period make ground-source heat pumps best suited to new builds or situations where the ground loop installation can be incorporated into site work already planned.
Hydronic (Hot Water) Boiler Systems
Best for: Homes with existing radiant floor systems or hot water baseboards — very common in older rural Renfrew County properties.
Hydronic systems heat water in a boiler and circulate it through baseboard radiators or radiant floor tubing. The result is exceptionally even, comfortable heat without the air movement associated with forced-air systems. Boilers can run on natural gas, propane, oil, or electricity. Modern condensing boilers achieve efficiencies comparable to high-efficiency furnaces.
Hydronic systems are more complex to retrofit into homes that don't already have them, but for properties that do, boiler replacement is generally straightforward and the system is worth maintaining.
Decision Guide for Renfrew County Homeowners
- Currently heating with oil? — Evaluate the OHPA grant seriously before replacing with another oil furnace. Up to $15,000 in grant funding plus the Greener Homes Loan makes a heat pump conversion the most financially compelling path for most households.
- Currently heating with propane? — Compare annual propane fuel costs against projected heat pump electricity costs at current rates. In most cases, a cold-climate heat pump saves money on operating costs; grant availability varies by income level and program.
- Currently on natural gas? — A high-efficiency condensing gas furnace (95%+ AFUE) is often the most practical upgrade. A gas/heat pump dual-fuel system (gas backup at extreme cold) can reduce operating costs further if electricity rates favour heat pump operation for most of the season.
- No ductwork in the home? — A ductless mini-split heat pump system eliminates the need for forced-air ductwork entirely and delivers both heating and cooling.
- New construction or major renovation? — Ground-source heat pump is worth evaluating — higher upfront cost, but 30+ year payback horizon with the highest long-term efficiency.