Ground-Source Heat Pumps for London & Southwestern Ontario
London Geothermal designs and installs WaterFurnace ground-source heat pumps for homes across London, Sarnia, Chatham-Kent, Goderich, Woodstock, Windsor, and Perth County. If you heat with oil or propane, one quiet ground-loop system replaces the furnace and air conditioner, trims operating costs, and qualifies for up to $12,000 in Ontario rebates.
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Southwestern Ontario's Ground-Source Heat Pump Specialist
London Geothermal is a ground-source heat pump specialist serving London and the off-gas rural belt of Southwestern Ontario, fulfilled by The Hayter Group, a long-established WaterFurnace dealer with decades of loop-field experience across Middlesex, Huron, Lambton, and Perth counties.
We design every system around the constant temperature a few feet below your property. Horizontal trench loops suit acreage, vertical drilled loops fit smaller village lots, and pond loops work where water sits on site. The result is a single WaterFurnace unit that carries your full heating load in winter, cools and dehumidifies in summer, and helps with domestic hot water, with no outdoor condenser and no flame.
Backed by our 100% satisfaction guarantee on every job.
How a Ground-Source System Comes Together
Every geothermal project follows the same clear path, from heat-load calculation to loop installation and long-term service.
Site Visit & Heat-Load Design
We walk your property, check soil and lot size, and run a full heat-load calculation on your home's size, insulation, and windows. Then we match a WaterFurnace unit to the load and recommend the right loop, horizontal trenches for acreage, vertical boreholes for tighter lots, or a pond loop where water is available. You get a fixed quote and an honest recommendation, not a hard sell.
Loop Installation & WaterFurnace Setup
Our crew trenches or drills the loop field, lays and pressure-tests the buried polyethylene pipe, sets the indoor WaterFurnace heat pump, and ties it into your existing ductwork. We pull the permits, purge and balance the loop, and commission the system so your home has heat and cooling from one quiet unit before we leave.
Rebate Paperwork & Annual Maintenance
We complete and submit the Ontario Home Renovation Savings and Oil-to-Heat-Pump applications so you capture every dollar, then stay with the system for the long haul. An annual service covers loop pressure, refrigerant charge, filters, electrical connections, and the desuperheater, keeping the unit efficient for decades.
Book Your Free Quote Today
Ready to replace oil or propane with one quiet, efficient ground-source system? Get a free site visit, clear pricing, and help capturing every Ontario rebate you qualify for.
Geothermal Heat Pump Questions, Answered
Straight answers to the questions Southwestern Ontario homeowners ask us about ground-source heat pumps, loop fields, and rebates.
What exactly is a ground-source geothermal system?
It is a heat pump that uses the stable temperature a few feet below your property as a heat source in winter and a heat sink in summer. A closed loop of fluid buried in the ground moves energy into an indoor WaterFurnace unit, which concentrates it for your home. The same system reverses in summer to cool and dehumidify, and it recovers waste heat to help with domestic hot water.
Is geothermal a realistic replacement for an oil or propane furnace in Ontario?
Yes, and it is one of the strongest use cases in Southwestern Ontario, where many rural homes sit off the natural gas grid. A correctly sized WaterFurnace unit carries the entire heating load off the constant earth temperature, so you can remove the oil tank or propane tank for good and gain air conditioning from the same system.
Which loop type fits my property?
It depends on your lot. Larger acreage across Huron, Lambton, or Perth usually suits a horizontal loop field in shallow trenches, the most cost-effective option. Smaller in-town lots in London, Woodstock, or Stratford often need vertical boreholes drilled deep, which need only a small footprint. If you have a pond or lake on the property, a pond loop can also work. We confirm soil and lot conditions at the site visit.
What rebates can I stack toward a ground-source installation?
The Ontario Home Renovation Savings Program offers up to $12,000 for ground-source heat pump installations, confirmed through November 2026. If you currently heat with oil and meet the income limits, the federal Oil-to-Heat-Pump Affordability Program can add up to $15,000 on top. We help you apply for both and structure the paperwork so nothing is missed.
How does the cost compare to a furnace and air conditioner?
The upfront price is higher because of the loop field and the trenching or drilling it requires, but the operating cost is far lower. A ground-source heat pump moves several units of heat for every unit of electricity it uses, while a combustion furnace can never exceed one. Over time the monthly savings, the eliminated fuel deliveries, and the rebates close the gap.
What does ongoing maintenance involve?
Less than a combustion furnace, because there is no flame and no outdoor condenser exposed to weather. An annual service checks loop pressure, refrigerant charge, filters, electrical connections, and the desuperheater that helps with hot water. With that routine, a WaterFurnace indoor unit typically runs 20 to 25 years, and the buried polyethylene loop field is rated for 50 years or more.
Serving London & Surrounding Communities
We provide fast, reliable geothermal service throughout London and Middlesex County. If you don't see your town listed, give us a call, chances are we cover it.