London Heating & Cooling: One Team, Every Season
London Geothermal keeps homes across London, Ontario and Middlesex County comfortable all year. Furnaces in winter, air conditioning in summer, and steady maintenance in between, handled by one dependable team that knows your system and answers when you call.
- 24/7 HVAC Service
- Financing Options
- 100% Satisfaction Guaranteed
- Licensed & Insured
An Established Name in London Home Comfort
London Geothermal is a licensed, insured HVAC company in London, Ontario that handles both heating and cooling for homeowners, from a single repair to a maintenance plan that runs all year.
We built this business on long-term relationships, not one-off calls. Homeowners stay with us because the same team services the furnace they trust us with in January and the air conditioner we tune up in June. You get steady, honest advice, work done right, and someone who already knows your equipment when you pick up the phone.
Backed by our 100% satisfaction guarantee on every job.
Why Choose London Geothermal?
We believe in transparency, respect, and quality workmanship. Here's what every customer can expect.
We Get to Know Your System
We look at the whole picture, heating and cooling together, and explain what we find in plain language. Whether it is a furnace repair, a new AC, or a heat pump, you get a clear recommendation, not a hard sell.
Work Done Right the First Time
Our technicians show up on time, do the job properly, and leave your home as tidy as they found it, on every furnace, AC, thermostat, or duct job.
A Team You Keep
The job is the start of the relationship, not the end. With seasonal maintenance and a team that knows your equipment, your system keeps running well for years.
Ready to Improve Your Home Comfort?
No matter the make or model, our experts have the tools and experience to handle any furnace, air conditioner, heat pump, or ventilation issue, fast.
Frequently Asked Questions
Answers to the questions London homeowners ask us most.
What is geothermal heating and cooling?
Geothermal, or ground-source, heating and cooling uses the stable temperature a few feet below the earth's surface to heat and cool your home. A loop of buried fluid carries heat out of the ground in winter and dumps heat back into the ground in summer, all through an indoor heat pump.
How does a ground-source heat pump work?
A ground-source heat pump circulates a water and antifreeze mix through a buried loop field. In winter it pulls heat from the ground and concentrates it for your home. In summer it reverses, pulling heat from your house and releasing it into the cooler earth. It also produces most of your domestic hot water.
How much does a geothermal system cost?
A typical ground-source installation for a SW Ontario home runs higher than a furnace and air conditioner combo, because of the loop field and trenching or drilling. The Ontario Home Renovation Savings Program rebate of up to $12,000 offsets a large share. We give you exact pricing after a site visit.
What rebates are available for geothermal in Ontario?
The Ontario Home Renovation Savings Program offers up to $12,000 for ground-source heat pump installations, confirmed through November 2026. If you heat with oil, the Oil-to-Heat-Pump Affordability Program adds up to $15,000 for low and median income households. We help you apply for both.
What are the different loop types for geothermal?
The two main loop types are horizontal, where pipe is buried in long shallow trenches, and vertical, where boreholes are drilled deep on smaller lots. Pond or lake loops work when you have water on the property. The right choice depends on your lot size, soil, and water access.
Can geothermal replace an oil furnace?
Yes. Replacing an oil furnace with a ground-source heat pump is one of the strongest use cases in SW Ontario, especially for rural homes off the natural gas grid. The Oil-to-Heat-Pump Affordability Program can pay up to $15,000 toward the conversion for qualifying incomes, and you eliminate oil deliveries for good.
Why WaterFurnace geothermal systems?
WaterFurnace is a dedicated ground-source manufacturer with a long track record in cold climates, and our fulfiller, The Hayter Group, is a WaterFurnace dealer that has installed over 1500 km of loop since 1982. That depth of field experience matters for a system meant to run for decades.
Does a geothermal system need maintenance?
Yes, but less than a combustion furnace. An annual service checks the loop pressure, refrigerant charge, filters, and electrical connections, and inspects the desuperheater for hot water. Because there is no flame or outdoor condenser exposed to weather, ground-source systems tend to run longer between repairs.
Do you serve areas outside of London, Ontario?
Yes. We serve London and nearby communities including Sarnia, Chatham-Kent, Goderich, Woodstock, and the surrounding area.
Serving London & Surrounding Communities
We provide fast, reliable HVAC service throughout London and Middlesex County. If you don't see your town listed, give us a call, chances are we cover it.