Ground-source heat pumps have never had a technology problem in Canada. The performance case has been well established for decades: geothermal systems outperform air-source heat pumps during cold Canadian winters, maintaining strong efficiency when outdoor temperatures drop low enough to strain even the best cold-climate air-source units on the market. Despite that clear performance advantage, geothermal has remained a stubbornly niche category within the broader Canadian HVAC industry, installed in a small fraction of the homes and buildings where it would technically perform best.
A new white paper from the Building Decarbonization Alliance and the Transition Accelerator argues that the barrier holding geothermal back has never actually been the underlying technology. It has been the financing and delivery model surrounding that technology — and the report proposes a specific structural fix that is already gaining traction in parts of the country.
How Geothermal-as-a-Service Actually Works
The Geothermal-as-a-Service model, commonly abbreviated as GaaS within the industry, restructures who bears the financial and technical risk of a geothermal installation. Under the model, the financing, installation, and long-term maintenance of the ground loop — the most capital-intensive, technically complex, and historically risk-laden part of any geothermal system — gets handed to a specialized third-party provider. The building owner, in turn, simply pays a straightforward monthly service fee for the heating and cooling the system delivers, rather than financing the full system cost as a single large upfront capital expenditure.
This single structural change addresses the primary reason geothermal has struggled to scale in Canada despite its strong technical case. Drilling and installing a ground loop is expensive, the installation process is more involved and disruptive than a standard air-source heat pump installation, and the long-term performance and maintenance of that ground loop has historically been a source of genuine uncertainty for building owners who have no easy way to evaluate whether they're getting a well-designed, durable system. By shifting both the capital risk and the long-term performance liability onto a specialized GaaS provider, the model removes the single biggest psychological and financial barrier that has kept geothermal in a niche category for so long.
Why This Is Specifically Good News for HVAC Contractors
For HVAC contractors evaluating whether geothermal is worth building genuine competency in, the GaaS model creates a meaningfully cleaner, more contractor-friendly scope of work than the traditional geothermal project structure ever did. Under the conventional model, an HVAC contractor taking on a geothermal project either needed to manage or subcontract the ground loop drilling directly, navigate the financing conversation with the customer, and absorb at least some portion of the long-term loop maintenance liability themselves — none of which falls naturally within the core competency of a heating and cooling contractor.
Under the GaaS model, that entire layer of complexity gets absorbed by the specialized third-party provider. The contractor's scope of work narrows specifically to the building-side mechanical systems: the heat pump equipment itself, the distribution system carrying heated or cooled water or air throughout the building, and the controls integration tying it all together. This is precisely the work that HVAC contractors are already licensed, trained, and equipped to perform well, without needing to develop drilling capability, become financing specialists, or take on ground loop performance risk they have no reasonable way to manage or insure against.
The Geographic Expansion Already Underway Across the Country
GaaS providers are not a purely theoretical concept still waiting for a first market entry. They are already operating, primarily concentrated in Ontario as an initial base, and are now actively expanding beyond that province into new markets and new building types across the country. As that geographic expansion continues over the coming years, demand for HVAC contractors with genuine geothermal competency — proper system sizing, building-side distribution design, and integration expertise with ground-source heat pump equipment specifically — will follow directly and predictably behind each new market a GaaS provider enters.
This expansion pattern gives contractors in markets where GaaS providers have not yet established a presence a useful piece of forward-looking intelligence: the arrival of a GaaS provider in your region is a leading indicator that building-side geothermal work is about to become genuinely available in your market, without your business needing to take on the historically harder barriers around ground loop financing or drilling that kept geothermal out of reach for most contractors in the past.
The Workforce Bottleneck the Report Explicitly Flags
The white paper is direct and unambiguous on one specific point: workforce capacity, not financing structure and not underlying technology, is now the binding constraint on how quickly geothermal can scale across Canada under the GaaS model. Geothermal-specific expertise remains unevenly distributed across the country, concentrated in the pockets where contractors have already built that competency through early-mover GaaS partnerships or through institutional and commercial geothermal project experience accumulated over the years before the GaaS model existed in its current form.
The report's message to contractors evaluating whether now is the right time to invest in geothermal competency is clear and direct: building geothermal knowledge now, ahead of the broader market demand that the GaaS expansion is expected to generate, represents a genuine first-mover advantage rather than a premature or speculative investment. Contractors who wait until geothermal demand is already obviously strong in their market will be competing against established players who built that expertise during exactly this current window, when the opportunity is becoming visible but competition for the work remains comparatively thin.
What Contractors Should Actually Do With This Information
• If a GaaS provider is not yet active in your specific market, actively monitor for their entry. That arrival is the clearest available signal that building-side geothermal work is about to become accessible in your area without your business needing to manage ground loop financing or drilling complexity directly.
• Building-side geothermal competency — proper heat pump sizing for ground-source systems, distribution design, and controls integration — is the specific, well-defined skill set worth investing in now, since the GaaS model has already removed the historically harder barriers around drilling and financing that used to make geothermal a much bigger commitment for a contractor to take on.
• Contractors operating in regions with consistently demanding cold-climate performance requirements stand to benefit most directly from geothermal's clear structural cold-weather performance advantage over standard air-source heat pump systems.
• Consider reaching out directly to GaaS providers currently operating in Ontario to understand their contractor partnership model, even if your business is based outside their current operating footprint. Understanding how they structure contractor relationships now will position you to move quickly if and when they expand into your specific market.
• Document any existing geothermal project experience your business already has, however limited, since that track record becomes a meaningful competitive credential as GaaS providers look for established contractor partners in each new market they enter.
The Bigger Picture for Canada's Decarbonization Goals
The Geothermal-as-a-Service report arrives at a moment when Canada's broader electrification and decarbonization ambitions, reflected in initiatives like the federal Powering Canada Strong strategy, are increasingly focused on the practical delivery mechanisms that actually get high-performance heating technology installed at scale, rather than simply setting aspirational targets without a clear path to achieving them. Geothermal has always had the technical performance case to be a meaningful part of Canada's heating transition, particularly in the colder regions where air-source heat pump performance genuinely struggles. The GaaS model may finally be the structural innovation that allows the technology to scale beyond the niche category it has occupied for decades, and the contractors who build genuine competency in this space now are positioning themselves at the front of a market that has real momentum behind it for the first time in years.
