Horticulture solutions to produce the perfect environment and reduce costs

Grow future yields by working with the latest best practices and innovations in horticulture HVAC.

Indoor Cannabis Growing

HVAC Solutions
for Licensed Producers

Indoor Cannabis Growing

HVAC Solutions
for Vertical Indoor Farming

Indoor Cannabis Growing

HVAC Solutions
for Horizontal Indoor Farming

Some horticulture clients

Kolostat can help you understand what VPD is all about and the delicate balance between the effect of a precisely controlled grow room environment and plant production yield. Humanity has been growing stuff outdoors since the edge of time. Moving society’s food production infrastructure indoor requires mastering the knowledge to recreate the perfect environment. Kolostat’s in-house track-record has proven our ability to do so time and time again.

    Our turnkey services


    Kolostat has proven itself to be a leader in the HVAC design-build industry. Whether in traditional design-build performance bids or through our trademark develop the design and build where we go beyond and meet our clients’ needs and business objectives. Kolostat then builds, commissions, and maintains our installations to ensure long term energy savings while exceeding client expectations.

    We do it all with:

    • In-house engineering, drafting, installation teams
    • Guaranteed construction costs unless there is a change in scope
    • Fastest delivery – always on time
    • Lifetime guarantee
    • Measurement and verification where required to ensure targets are achieved

    Our clients tell us that doing a project design-build with Kolostat gives them the best value for their money.

    This method helps our industrial clients free up their operational and maintenance staff so they can keep their eyes on the production.

    Air Conditioning & Ventilation

    Occupant comfort and energy-efficient horticulture HVAC systems are what we specialize in. In order to meet your budget and indoor air quality requirements, our experienced professionals have a proven record to engineer mechanical systems that will exceed your most stringent demands or to work with your consultants towards the same goal.

    Heating, Piping and Plumbing

    Kolostat’s piping team is proud to have designed and installed award-winning piping systems that have saved their owners millions of dollars in energy consumption.

    Almost every horticulture facility in North America has excess heat which needs to be dissipated year-round. While most buildings simply reject heat directly into the atmosphere, we recognize that every season of the year gives us opportunities to put this excess heat to work. Whether by tempering fresh air, heating domestic hot water, or even melting snow, Kolostat’s engineers always look for alternative ways to use or store this heat before turning to more conventional methods. We have consistently shown horticulture facility owners that an investment in their piping infrastructure can drastically reduce energy costs and increase system performance.

    We also strongly advocate the efficient use of potable water. With today’s low water flow plumbing fixtures, we exercise special care to ensure all the plumbing fixtures work properly, despite this diminished water flow.

    Industrial Expertise

    Kolostat specializes in providing industrial-grade solutions that encompass all aspects of the production and distribution of steam, hot water, and chilled water. Along with our ventilation, combustion, and controls disciplines, we look for energy-saving opportunities with a holistic approach which makes us an ideal turn-key design-build partner.

    In particular, we focus on providing turnkey installations including grants and rebates applications and follow up. Our engineers are familiar with all available grant programs including among other Eco Performance program (Transition Énergétique Québec), Énergir & Hydro-Quebec grant programs. These projects can provide energy efficiency measures with paybacks as quickly as 24 months. We work in close collaboration with our clients to define mutually agreed performance targets and deliver on these expectations with our inventive designs. With our in-house engineering expertise for energy simulation, system design, equipment selection, and grant applications, we are able to secure funding and guarantee successful project results.


    We serve large horticulture facilities as well as industrial clients to prevent costly breakdowns to their process combustion systems such as burners, dryers, boilers, and heating facilities. We work with all kinds of combustion systems and fuel types, including high/low-pressure steam, bunker, oil #2, thermal oil systems, micro-modulation systems, and much more.

    In addition to maintaining equipment, we specialize in refurbishing burners, gas train equipment, burner management systems, retubing, refractory changes – you name it. When appropriate, we evaluate and recommend when it’s time for a replacement.

    Many boiler plants are oversized, which causes inefficient burning as well as costly and damaging cycling of the heating systems. We design and install boiler plants that are the right-size for the application and operate them efficiently.


    Today, Building Automation Systems (BAS) are critical assets for almost every building. They are the key to ensure that the mechanical designs perform to their highest potential. Kolostat’s control installations operate on an Automated Logic Corporation (ALC) platform, one of the industry leaders in North America. By combining the power of ALC with the ingenuity of Kolostat’s multidisciplinary professionals, we are able to find innovative ways of controlling equipment to optimize both production yield and energy consumption. Either by mobile or desktop devices, ALC gives us the ability to display and modify the control logic live through its WebCTRL® web interface, allowing users and operators to easily understand precisely how their equipment is being controlled.

    From the smallest VAV box to the most complex facility-wide mechanical systems, WebCTRL® has the speed, power, and flexibility to keep systems running at peak efficiencies.

    Preventive Maintenance

    Since 1927, we have developed our operational techniques and our preventive maintenance know-how to the full benefit of our clients.

    Our Goals 

    • Extend your equipment’s life cycle,
    • Improve occupant comfort,
    • Reduce loss of productivity,
    • Reduce or stabilize your operating costs.

    Our Process

    • Define your needs and identify the issues,
    • Analyze your installations and determine the appropriate corrective measures,
    • Proceed with a financial analysis of your current operating costs,
    • Determine the best program to serve your needs,
    • Launch your personalized preventive maintenance program.

    Our Exclusive Lifetime Guarantee Program

    • When our clients opt for a lifetime guarantee agreement, they benefit from a fixed annual price for all maintenance and repair work on their mechanical systems. This valued approach helps our clients in the following 4 ways:

    1. Kolostat assumes all the maintenance and repair costs, and keeps your equipment in perfect condition in order to eliminate costly breakdowns,

    2. We eliminate the problems before they occur, thus maximizing occupant comfort and productivity,

    3. A lifetime agreement will allow our clients to better budget their annual expenditures at a fixed price,

    4. Furthermore, a well-planned preventive maintenance ensures that the equipment operates properly, thus reducing energy costs.

    • Benefiting from a preventive maintenance program on your mechanical systems is definitely part of our GREEN philosophy. Kolostat designs and installs mechanical systems, and we fully commit to operate them in an effective and optimal manner.
    Service Call

    One number! (514) 333-7333, option 1.

    A 50 truck service fleet to better serve you.

    For all emergencies, we are available 24/7 and will provide a quick and professional service.

    Whether your problem is related to heating, ventilation, air conditioning, plumbing, piping, combustion or controls, one of Kolostat’s licensed technicians will solve the situation diligently to ensure that your equipment is functioning properly.

    Our speedy service will minimize slowdown of your employees, tenants and/or your operations or any discomfort resulting from the improper function of your mechanical systems.

    Experience the Kolostat Difference!

    One-Time Consulting Services

    Construction requirements whether for a commercial or industrial energy efficiency project  or  a new or existing  building need:

    • Engineering, Life cycle analysis
    • Energy Planning and Grant Maximization
    • HVAC, Piping, Combustion, DDC Controls, RCx, Energy Retrofit
    • Maintenance, Measurement & Verification, Continuous Cx
    • Accompaniment in energy management system (EnMS)
    • Accompaniment in LEED, BOMA BEST certification
    • Energy Star certification
    • Energy Policy
    • Energy Planning
    • Energy, Water Audits
    • Power demand profile
    • Facility Energy Master Plan (if required)
    • Providing M&V tools (if required)
    • Application to grant programs
    Continuous Consulting Services

    On top of all our other services, we can also offer you:


    • Billing analysis and weather normalization – monthly
    • Benchmarking (regular vs Energy Star) – yearly
    • Analyzing the power demand profile (Monthly) to determine if peak demand can be shaved
    • Assessing energy performance with respect to the baseline (on a monthly basis) to early detect any deviation
    • Reviewing systems performance via DDC (by system/global) going beyond existing service contract – quarterly
    • Enforcing agreed-upon schedules of operation & set points – quarterly
    • Energy Star Scores & (Certifications for eligible buildings) – yearly (optional)
    • Detecting operational anomalies through DDC review & analysis – ongoing
    • Attending energy committees meetings (optional)
    • Giving some energy training to assigned energy champions (Optional)

    Tell us about your project

    Why choose Kolostat for all of your horticulture HVAC needs?

    More grants.
    We design and build solutions and optimize their ability to win government grants.
    Lower energy costs.
    Our work has the ability to substantially reduce energy costs throughout your entire commercial building
    A highly talented team.
    We don’t only understand the HVAC technology and fundamentals, we understand how it more broadly affects your bottom line every step of the way; ultimately, we understand value from an owner’s point of view. That’s why Kolostat chooses longer-lasting equipment by design when it comes to horticulture.
    Bigger and more consistant production yields.
    Kolostat has a unique advantage in our ability to help you choose the ideal plant layout for maximum production yield while reducing your mechanical and architectural costs. The HVAC environment is as critical to the success of a crop’s growth as is the plant’s genetics, the lighting system, as well as the fertigation system. Our team understands the delicate balance of VPD and how to maintain it.
    Kolostat has a proven track record.

    Check out our white papers and case studies.

    Also, see how we’re helping clients tackle COVID-19.


    What is the Kolostat promise?

    No surprises
    No cost budget overruns
    No unexpected expenditures

    What's it like working with Kolostat?
    Our team of seasoned engineers and specialists will:

    1. Evaluate your facility and how we can help you.
    2. Design and engineer the right overall solution for your process/facility
    3. Install turnkey solutions justified on a cash flow basis!
    4. Provide ongoing, onsite support services
    5. Help you continually evaluate your assets/processes and operations
    Why choose Kolostat as your project contractor?

    Kolostat has the local resources and experience to successfully implement facility optimization projects which meet your needs and objectives.

    • Lifetime guarantee on solutions
    • No extra cost or cost budget overrun 
    • One source of responsibility – all coordination is done by Kolostat (fewer disputes)  
    • Collaborative approach including your internal resources centered on your needs and objectives 
    • Faster project delivery (less players, less steps)  – always on time 
    • Eliminates adversarial conditions  
    • Fixed price turnkey solutions (limited risk for the client) 
    • Shorter procurement period 
    • Early knowledge of project cost 
    • Bigger chance to innovate and achieve design excellence

    Des services de design-construction sur mesure

    Chez Kolostat, une approche personnalisée est mise de l’avant et permet à l’équipe de s’adapter à chaque situation pour répondre à vos besoins.

    Au service des clients depuis plus de 95 ans

    Entrepreneur mécanique spécialisé dans le domaine du CVAC, nous offrons des services intégrés et réalisons des projets clés en main, de la conception à la construction, voire même jusqu’à l’opération et l’entretien.

    Ajoutez de l’intelligence à vos procédures d’assurance de la qualité de l’air