A strategic decision impacting your energy performance and indoor comfort
When it comes to equipping a commercial building with an efficient heating system, the choice between a centralized or decentralized solution is far more than just a technical decision. This choice directly affects occupant comfort, operating costs, energy consumption, and long-term adaptability. At AirGreen, we work daily with commercial property owners, office managers, and operators of retail or industrial spaces across Montréal, Laval, Longueuil, the South Shore, and the North Shore, helping them determine the most suitable commercial heating strategy for their unique needs.
Understanding the difference: centralized heating vs decentralized heating
Centralized heating: a unified solution managed from a single point
In a centralized system, heat is generated from a single source (usually a boiler or central heat pump), and then distributed through ductwork or radiators throughout the building. This type of system is common in large, single-use or multi-zone buildings.
Advantages of centralized heating:
-
Consistent temperature throughout all spaces.
-
Simplified maintenance: one main unit to inspect and service.
-
Compatible with modern building management systems (BMS).
-
Can be combined with a central air conditioning system.
Potential disadvantages:
-
Higher upfront investment.
-
Less flexibility if room usage changes.
-
Possible heat loss through poorly insulated ductwork.
Decentralized heating: flexibility, autonomy, and modularity
Conversely, a decentralized system relies on several independent heating units installed in various zones of the building (e.g., wall-mounted heat pumps, rooftop units, electric baseboards, etc.). This configuration is often chosen for buildings with diverse uses, spread-out layouts, or those without existing ductwork.
Advantages of decentralized heating:
-
Individual temperature control in each zone.
-
Lower installation cost in smaller buildings.
-
Ideal for properties divided among multiple tenants or users.
Disadvantages to consider:
-
Multiple maintenance points.
-
Varying performance depending on the chosen units.
-
Less suitable for very large spaces or production areas.
AirGreen case study: Central heat pump system installation in a Laval warehouse
Recently, our team was tasked with equipping a 5,000 sq. ft. commercial warehouse in Laval. After a comprehensive needs assessment, we recommended installing a Bosch BOVA 36,000 BTU central heat pump with an air coil and insulated galvanized ductwork.
Challenges encountered:
-
High ceilings (12 feet) requiring optimized vertical air distribution.
-
The need for consistent temperature to protect sensitive equipment.
-
Adhering to the owner's annual energy budget.
Solutions provided by AirGreen:
-
Design of a high-efficiency duct system with zone regulation.
-
Integration of a smart control system with multizone Wi-Fi thermostats.
-
Airflow optimization for maximum efficiency, even in winter.
Result: stable temperatures, 28% reduction in energy costs, and minimal upkeep ensured by our team.
When to choose a centralized system for your commercial building?
A centralized system is generally best in the following situations:
-
Buildings over 4,000 sq. ft. with uniform usage.
-
New or recently renovated structures where duct installation is simplified.
-
Desire for centralized energy management.
-
Need for an integrated heating/cooling hybrid solution.
Decentralized heating: a strategic choice for:
-
Multi-tenant or multi-use buildings.
-
Older or heritage buildings without duct infrastructure.
-
Projects with tight budgets or fast deployment needs.
-
Situations requiring customized comfort per room (e.g., clinics, service centers, open-plan retail).
AirGreen’s practical tips to make the right choice
-
Evaluate your real thermal comfort needs, based on how the spaces are used.
-
Plan for the future of your building (expansions, usage changes, new tenants).
-
Request an on-site thermal audit, like the one we offer free of charge to our commercial clients.
-
Explore available rebates and incentives, especially energy transition programs in Québec.
-
Prioritize energy efficiency (SEER, HSPF, COP) and compatibility with existing ventilation systems.
The importance of the right HVAC partner
Choosing between centralized and decentralized heating requires the support of a reliable, local, and experienced partner. At AirGreen, we’ve been guiding businesses in Montréal, Laval, Longueuil, the South Shore, and the North Shore for over 15 years in their projects for installation, renovation, or replacement of HVAC systems.
Our commitments:
-
Personalized technical assessments.
-
Rigorous equipment selection (Bosch, Fujitsu, Gree, Lennox, etc.).
-
Fast, clean, and safe installation.
-
Full support for obtaining Hydro-Québec / LogisVert grants.
Conclusion: a customized commercial heating strategy with AirGreen
There’s no one-size-fits-all answer to the centralized vs decentralized heating question. Every building, commercial activity, and budget calls for a tailored approach. What truly matters is to design a personalized, efficient, scalable strategy that perfectly matches your reality. And that’s exactly what we do at AirGreen.
Thinking of upgrading or installing a new commercial heating system? Reach out to our team for a free HVAC assessment, and let us propose a clear, cost-effective, and long-lasting solution.