The question of whether geothermal is possible for condominiums and townhouses comes up frequently — and the answer is yes, but with important differences from single-family residential installations. Whether you are a condominium board evaluating an energy upgrade, a townhouse complex HOA exploring options, or a developer planning a new multi-unit project, this guide covers what you need to know.
Alberta’s condominium market — particularly in Edmonton and Calgary — is significant and growing. Many condo complexes built in the 1980s–2000s face ageing boiler and HVAC systems that need replacement. This is the moment when geothermal becomes a genuinely competitive option: when the existing system needs replacement anyway, the incremental cost of choosing geothermal over a gas boiler replacement narrows dramatically.
Individual Suite vs Shared System: The Two Models
Geothermal in a multi-unit context can be implemented in two fundamentally different ways, and which approach is appropriate depends on the property type and ownership structure.
Individual suite geothermal: each unit has its own ground loop and heat pump. This is typical for townhouse complexes where each unit owns its own yard or footprint. The advantage is owner independence — each unit owner makes their own decision about whether to install geothermal and manages their own energy costs. The limitation is that individual loop fields require separate yard access for each unit, which is only practical for ground-floor or grade-level units with private outdoor space.
Shared loop geothermal: a central bore field or loop field serves all units via a shared ground loop. Each unit has its own heat pump that connects to the shared loop. This is the standard approach for apartment-style condominiums and stacked townhouse complexes. The shared loop reduces per-unit loop cost dramatically compared to individual loops, and allows high-rise or stacked buildings to access geothermal technology that would otherwise be impossible.
Our multi-family geothermal design and cost guide covers the shared loop model in detail, and our commercial geothermal page explains the broader commercial and multi-unit context.
How a Shared Loop Geothermal System Works in a Condo Complex
In a shared loop system, the condominium corporation or strata owns and maintains a central bore field — typically a grid of vertical boreholes under the parking lot, courtyard, or adjacent land. A shared water loop (the ‘building loop’) circulates fluid from the bore field to each unit’s mechanical room.
Each suite has its own water-source heat pump that connects to the building loop. When a unit needs heat, the heat pump extracts heat energy from the building loop fluid (which is maintained at a stable ground temperature). When a unit needs cooling in summer, the heat pump rejects heat into the building loop. The combined effect across all units in the building is a natural thermal balance — cooling units in summer pre-warm the loop, reducing heating demand; heating units in winter cool the loop, reducing cooling demand.
Utility metering works at the suite level — each unit’s heat pump has its own electricity meter and each unit owner pays only for their own heat pump’s electricity consumption. The condominium corporation manages the shared loop pump energy as a common area expense.
The Condominium Corporation’s Role
In Alberta, a condominium corporation (or strata corporation) holds responsibility for shared infrastructure. A central bore field and building loop are shared infrastructure — the corporation owns them, maintains them, and funds them through reserve funds or special levies.
Before a shared geothermal system can be implemented, the condominium corporation must pass a special resolution (typically requiring 75% owner approval under Alberta’s Condominium Property Act) to authorize the capital expenditure and any changes to common property. The board needs to commission a feasibility study and present a clear financial case — cost of the shared system, expected reduction in individual unit energy costs, maintenance obligations, and financing plan.
Condo boards evaluating a geothermal retrofit should work with both a geothermal engineering firm and their condominium legal advisor. The technical and legal processes run in parallel — the technical assessment confirms feasibility and costs, while the legal process manages the resolution and documentation required under the Act.
New Condo Developments: Why Geothermal Makes the Most Sense at Construction Stage
For developers planning new condominium projects in Alberta, installing a shared geothermal loop at construction stage is dramatically more cost-effective than retrofitting it later. The bore field can be installed under the parking structure or landscaping before any surface finishing. The building loop and suite connections are roughed in during framing. The incremental cost over a gas boiler plant is typically $8,000–$15,000 per suite when designed from the start — a fraction of the retrofit cost.
Our guide on why property developers are choosing geothermal for multi-family housing covers the developer perspective, including how geothermal supports ESG reporting and premium tenant attraction in a competitive market.
What It Costs: Shared Geothermal for a Condo Complex
A shared bore field and building loop for a 20-unit low-rise condominium complex typically runs $250,000–$400,000 for the shared infrastructure (bore field, loop, pumps, controls, manifold room). This is the corporation’s capital expenditure. Each unit then requires its own water-source heat pump at $8,000–$14,000 per suite — which may be the unit owner’s responsibility depending on the corporation’s ownership structure.
For a 20-unit complex, the total project cost is $410,000–$680,000. On a per-suite basis, this is $20,500–$34,000 — comparable to a high-quality individual residential geothermal installation for a single-family home, but with each suite then paying only $50–$100/month in electricity for heating and cooling instead of $180–$280/month in gas.
Our geothermal cost guide provides the full cost framework for both residential and commercial-scale applications.
Townhouse Complexes: A Simpler Path
Ground-level townhouse complexes — particularly those with private rear yards or garden areas for each unit — can in many cases use individual suite geothermal installations rather than a shared loop. If each townhouse unit has sufficient private outdoor space for a vertical bore or two (requiring approximately 3m x 10m per bore), individual installations are feasible without requiring a corporation-level decision.
For detached or semi-detached townhouses on individual title with no shared building infrastructure, this is simply a standard residential geothermal installation — each owner makes their own decision independently.
For attached stacked townhouses or townhouses on a shared foundation, the shared loop approach is more appropriate.
How Geothermal Benefits Individual Condo Owners
From the individual suite owner’s perspective, the benefits of a geothermal building are significant. Heating and cooling costs drop dramatically — from gas bills of $1,500–$2,500/year to electricity costs of $600–$1,200/year for an average-sized suite. The suite does not need a gas connection, eliminating the monthly connection fee. Both heating and cooling are served by the same system — no separate air conditioner required.
The how geothermal works guide provides a clear explanation of the technology for owners who are unfamiliar with ground source heat pumps before evaluating a corporation proposal.
Frequently Asked Questions
Can I install individual geothermal in my condo suite without board approval?
If your suite is a townhouse on individual title with private yard space not shared with other owners, you may be able to proceed independently. If any part of the installation — including loop placement — touches common property, you will need board approval and potentially a special resolution. Consult your condo documents and a condominium lawyer before proceeding.
What happens to the shared bore field if the building is sold or redeveloped?
A bore field is a long-term asset with a 50+ year design life. If a building is demolished and redeveloped, the bore field can in many cases be reused for the new development, extending its value. The corporation’s reserve fund study should account for the bore field’s maintenance and eventual replacement costs — though the long service life means replacement is a very long-term consideration.
Are there incentives available for condo corporations installing geothermal?
The federal 30% Clean Technology Investment Tax Credit applies to corporations (including condominium corporations operating as legal entities) investing in qualifying clean technology property. The ESB Energy Savings for Business program may also apply to commercial-scale condo projects. A tax advisor familiar with condominium law and the CRA’s treatment of condominium corporation capital expenditures should be consulted.
How do you fairly allocate the shared bore field costs among unit owners?
This is a governance question more than a technical one. Common approaches are per-suite equal allocation, allocation by unit size (sq ft), or allocation by heating demand estimate. The condominium board and its advisors determine the allocation methodology as part of the special resolution package presented to owners.
Find Out If Geothermal Is Feasible for Your Alberta Condo or Townhouse
Envirotech Geothermal works with condominium corporations, strata boards, HOAs, and developers across Alberta on shared-loop and individual geothermal projects. A feasibility assessment is the right first step — it establishes bore field options, per-unit cost, and the financial case to present to owners. Contact the team to discuss your complex.
— Envirotech Geothermal | Multi-unit and single-family geothermal specialists across Alberta — designing and installing shared and individual ground source systems since 2006