Commercial HVAC Services in Ottawa
Commercial heating, cooling, rooftop unit, boiler and maintenance services for Ottawa businesses, property managers and contractors.
Heating and Cooling for Ottawa Businesses
Commercial Heating and Cooling for Ottawa Properties
We help Ottawa business owners, property managers and contractors keep their buildings comfortable through every season. Our in-house technicians work on rooftop units, gas heating, boilers, heat pumps, ductless and VRF systems, ventilation equipment and indoor air quality concerns.
Service and replacement decisions can affect tenants, staff, customers and building schedules. We look at the existing system, access conditions, how the space is used and what needs to happen next. From there, we explain the options and provide a clear repair plan or written quote.

What We Service
Commercial HVAC Repair, Maintenance and Installation in Ottawa
Many buildings rely on more than one type of heating, cooling or ventilation equipment. Our technicians can assess the complete system and recommend the right next step for the equipment below.
Rooftop Units
Diagnostics, repair, seasonal maintenance and planned rooftop unit replacement for gas, cooling and heat-pump equipment. Replacement work can include removal, recycling and crane coordination.
Explore rooftop unit serviceHeating Systems
Service and installation for furnaces, gas heating equipment, heat pumps and warehouse unit heaters, with careful attention to controls, airflow, venting and how each area is used.
Explore heating serviceBoilers and Hydronics
Boiler service, maintenance and installation for hydronic systems serving radiators, radiant floors, forced-air coils and domestic hot-water loads.
Explore boiler serviceCooling Systems
Air-conditioning and heat-pump service for rooftop and split systems, including troubleshooting, seasonal preparation and replacement planning.
Explore cooling serviceDuctless and VRF Systems
Multi-zone comfort solutions for offices, additions, low-rise multi-unit properties and rooms where independent temperature control is important.
Explore ductless and VRF systemsAir Quality and Ventilation
Indoor air quality testing plus HRV, ERV, HEPA, UV and carbon-filtration options selected to address measured conditions and the building’s ventilation needs.
Explore air quality and ventilationA clear scope comes first. We review the equipment, access, operating requirements and connected systems before recommending repair, maintenance or replacement. This keeps the quote focused on the work the building actually needs.
Preventive Maintenance
Commercial HVAC Maintenance Plans Built Around Your Property
Maintenance should reflect the equipment on site, filter requirements, seasonal operating changes and access conditions. We build flexible service plans around the property instead of forcing every building into the same checklist or schedule.
Know What Is Working and What Needs Attention
Regular maintenance gives property teams a consistent service contact and a clearer picture of equipment condition. It can also identify smaller concerns before they become disruptive heating or cooling failures.
We can review the property, current equipment and preferred service timing before preparing a maintenance quote.
Planned service can include
- Heating and cooling inspections
- Filter replacement cycles
- Seasonal equipment changeovers
- Belts, drains and accessible components
- Operating and control checks
- Equipment-condition observations
- Recommendations for corrective work
- Planning for aging equipment
Equipment and Service Details
Rooftop Units, Commercial Heating, Boilers and Cooling Systems
The sections below explain the systems we work on, common reasons customers call and what we consider when repair or replacement is needed.
Rooftop Unit Service
Rooftop Unit Repair, Maintenance and Replacement
Packaged rooftop units combine heating, cooling, airflow and controls in equipment that is exposed to Ottawa weather year-round. When a unit is not heating, cooling or moving air properly, the cause may be inside the unit, at the thermostat or controls, or in the connected ductwork.
We service and maintain rooftop units and can plan replacements for aging equipment. A replacement assessment considers capacity, gas or heat-pump configuration, electrical requirements, curb and duct connections, roof access and how the building will operate while the work is completed.
- Rooftop unit diagnostics and repair
- Seasonal inspection and maintenance
- Gas and heat-pump rooftop equipment
- Planned RTU replacement and crane coordination
- Removal and recycling of replaced equipment
When to Call for Rooftop Service
Call when occupied areas are too hot or cold, airflow drops, the unit repeatedly stops, controls display a fault, unusual noise develops or water appears around the equipment or duct connection.
For a planned replacement, an equipment review before peak heating or cooling season gives more time to confirm the scope and coordinate access.
Heating Systems
Commercial Heating: Furnaces, Heat Pumps and Unit Heaters
Reliable heating depends on more than the appliance. Airflow, venting, controls and the way different areas are used all affect comfort and performance. We service and install furnaces, heat pumps and gas-fired unit heaters for suitable Ottawa properties.
Warehouses and high-bay spaces may require several heaters along with careful gas, electrical and control coordination. Offices and retail spaces often rely on rooftop or split systems. We review the application before recommending equipment or repair work.
- Furnace repair and replacement
- Gas heating and unit-heater service
- Heat-pump installation and repair
- Thermostat and accessible control troubleshooting
- Heating-season inspections and planned upgrades
When Heating Needs Attention
Arrange service when occupied areas remain cold, equipment repeatedly stops, airflow changes, controls display a fault or unusual noise develops. We assess the affected equipment along with the controls and conditions around it.
If a carbon-monoxide alarm activates, you smell gas or equipment appears unsafe, leave the affected area and follow the instructions from the alarm or gas utility before arranging service.
Boilers and Hydronic Systems
Commercial Boiler Repair, Maintenance and Installation
A boiler is one part of a larger hydronic system. Circulators, expansion control, valves, heat emitters, domestic hot-water equipment and building controls all affect how it operates. We assess the connected system instead of treating the boiler as an isolated appliance.
Applications can include radiators, radiant-floor heating, compatible forced-air coils and combined space-heating and hot-water requirements. For repair or replacement, we review the operating problem, distribution system, available space, venting and control needs.
Common Boiler Problems
- No heat or inconsistent building temperatures
- Pressure, circulation or control problems
- Leaks around the boiler or connected piping
- Repeated faults or short operating cycles
- Planned boiler and mechanical-room upgrades
- Maintenance before the heating season
Cooling Systems
Commercial Air Conditioning, Ductless and VRF Systems
We service and install rooftop, split, heat-pump, ductless and VRF cooling equipment. These systems may serve an entire small business, several independently controlled zones or a high-load room that needs dedicated cooling.
Ductless and VRF designs can provide flexible zoning where conventional ductwork is limited or where different rooms operate on different schedules. Equipment selection should account for heating and cooling loads, line-set routing, condensate management, controls, outdoor-unit placement and future service access.
- Air-conditioning repair and maintenance
- Ductless heating and cooling systems
- VRF multi-zone comfort systems
- Heat pumps for business properties
- Dedicated cooling for suitable equipment rooms
Installation Backed by Local Service
We work with equipment from established manufacturers and continue to support it after installation. Our Mitsubishi Electric dealer training and field experience are especially valuable for ductless and multi-zone applications.
Test First
Commercial Ventilation and Indoor Air Quality
Odours, stuffiness, airborne particles and comfort complaints do not all have the same cause. Our testing can assess carbon dioxide, particulate matter and volatile organic compounds, then provide a report that helps guide the next decision.
Where appropriate, we can recommend and install ventilation and filtration products such as heat-recovery ventilators, energy-recovery ventilators, HEPA filtration, UV treatment and carbon filtration. The goal is to match the response to measured conditions and the existing HVAC system.
Clearer Information for Better Decisions
Testing can turn a general concern into a more useful discussion about ventilation, filtration or other corrective work. Recommendations still depend on the property, existing systems and test results.
Buildings We Serve
Experience Across Ottawa Workplaces and Properties
Our work includes occupied buildings, mechanical rooms and new construction. Every site is different, but the priorities remain the same: safe access, clear communication and work planned around the people using the property.
Offices and Workplaces
Heating, cooling, zoning and air-quality support for workplaces where comfort complaints can vary by room, exposure and occupancy.
Retail and Customer Spaces
Rooftop, split and heat-pump systems serving storefronts and other customer-facing properties where downtime can disrupt operations.
Low-Rise Multi-Unit Properties
Boilers, ductless systems and common-area equipment for suitable apartment and multi-unit applications.
Warehouses and High-Bay Spaces
Unit heaters, rooftop equipment and planned installation coordination for large open areas and changing occupancy needs.
Institutional and Community Properties
Heating and cooling support for suitable schools, churches, clubs and other facilities with busy occupied schedules.
New Construction
Heating and cooling installation coordination with Ottawa contractors for suitable warehouses, retail spaces and multi-unit builds.
Replacement and Construction
Commercial HVAC Replacements, Retrofits and New Builds
Good installation work begins with the right equipment and proper field coordination. We work with Ottawa contractors and property teams on suitable projects involving rooftop units, boilers, heat pumps, ductless systems, warehouse heating and ventilation products.
Our quote can address access, controls, gas and electrical coordination, removal of old equipment and the sequence of work. Final requirements are confirmed for the building and project.
- Equipment replacement planning
- New-build HVAC coordination
- Tenant-space and retrofit work
- Rooftop access and crane planning
- Gas and electrical coordination
- Start-up and service continuity
Plan the Work Before Equipment Arrives
An early review provides more time to confirm equipment, access and the work required around the system. It also gives you a clearer basis for comparing quotes instead of looking only at model numbers.
Why AirZone
Local Experience and One Team Behind the Work
A product list only tells part of the story. We combine local field experience, directly employed technicians and continued service after installation.
Serving Ottawa Since 2005
Recommendations are informed by Ottawa weather, local building conditions and years of service experience in the region.
Directly Employed Team
Our own installation and service team provides a clear line of responsibility for the work and follow-up.
TSSA, HRAI and ESA Credentials
We are a TSSA-registered contractor, HRAI member and ESA member, with licensed and insured service.
Written Quotes and Recommendations
We explain the proposed work and provide a written quote for planned repairs, replacements and installations.
Written Scope for Planned Work
We review the application and prepare the quote around the equipment, access and connected work required.
Maintenance and Service After Installation
The relationship can continue through seasonal maintenance, repair and future equipment planning.
Recent Work
HVAC Projects Across the Ottawa Area
These photographs show some of the equipment, properties and field conditions our technicians work with.
Questions From Property Owners and Managers
Questions About Commercial HVAC Service in Ottawa
Every building is different, but these answers cover the questions we hear most often when customers are planning service, maintenance or replacement work.
What commercial HVAC services does AirZone provide in Ottawa?
We repair, maintain and install rooftop units, furnaces, heat pumps, boilers, warehouse unit heaters, air-conditioning systems, ductless and VRF equipment, ventilation products and selected indoor air quality solutions. We confirm the equipment and scope before scheduling or quoting the work.
Does AirZone repair and maintain rooftop units?
Yes. We provide rooftop unit repair and maintenance in Ottawa for packaged heating and cooling equipment. Our technicians can diagnose heating, cooling, airflow and control problems and recommend repair, maintenance or replacement when appropriate.
Can AirZone replace a rooftop unit and coordinate the crane?
Yes, for suitable projects. A rooftop unit replacement can include removal and recycling of the old equipment, roof-access planning and crane coordination. We confirm capacity, connections, controls and site requirements before preparing the quote.
Does AirZone offer commercial HVAC maintenance plans?
Yes. We create flexible commercial HVAC maintenance plans based on the property’s equipment, filter requirements, operating schedule and access conditions. Planned service may include heating and cooling inspections, filter changes, seasonal checks and recommendations for future work.
Does AirZone service and install commercial boilers?
Yes. We provide commercial boiler repair, maintenance and installation for suitable properties. Our assessment also considers circulation, controls, piping, heat emitters and connected hot-water loads because these components all affect how the boiler performs.
Does AirZone install ductless and VRF systems for businesses?
Yes. We install and service suitable ductless and VRF multi-zone systems for offices, low-rise multi-unit properties, additions and spaces where conventional ductwork is limited.
Can AirZone test indoor air quality in a workplace?
Yes. We can test for carbon dioxide, particulate matter and volatile organic compounds and provide a report. Depending on the findings and existing system, we can discuss appropriate ventilation or filtration options.
What types of properties does AirZone work in?
Our commercial HVAC experience includes offices, retail spaces, low-rise multi-unit properties, warehouses, schools, churches, clubs and other suitable Ottawa-area buildings. Service availability depends on the equipment and requested work.
Does AirZone work on new construction and retrofit projects?
Yes. We work with Ottawa contractors and property teams on suitable new builds, tenant improvements and retrofit projects. Contact us early to review equipment, access, gas and electrical coordination, controls and timing.
How do I request a commercial HVAC quote?
Use our online quote request and tell us about the property, equipment and work being considered. We will follow up to confirm the next step and the information needed to prepare an accurate scope.
Service and Project Planning
Tell Us What Your Building Needs
Whether you need rooftop unit service, heating or cooling repairs, boiler work, a maintenance plan or a planned replacement, start by telling us about the building and equipment. We will review the request, confirm the scope and recommend the next step.