What Kolostat does

Kolostat is a private mechanical contracting firm headquartered in Laval, Quebec (Canada), founded in 1927. According to its firmographic profile, the company operates across three core service lines: bid-and-spec mechanical contracting, design-build construction, and HVAC preventative maintenance and service. This multi-service posture suggests the firm serves both new-build and ongoing operational needs, targeting commercial, institutional, and/or industrial clients requiring mechanical systems installation and lifecycle support.

The company employs between 101 and 250 people, placing it in the small-to-mid-market tier for North American mechanical contractors. Its business model combines episodic project-based revenue (bid/spec and design-build) with recurring preventative-maintenance service contracts, a typical hybrid structure for established regional mechanical contractors. Beyond these basic firmographics, no information is available on revenue, ownership, leadership, customer mix, geographic footprint beyond Laval, pricing, partnerships, technology stack, or strategic actions.

Material data gaps should be noted explicitly: the company website returned only a verification/loading screen, and third-party structured enrichment returned empty arrays across nearly every dimension (revenue, funding, headcount detail, products, technology, AI capabilities, certifications, partnerships, leadership, M&A, investments, regulatory actions). Any investment-relevant conclusion beyond the basic firmographic profile must therefore be treated as low-confidence and indicative rather than evidenced.

Name

Kolostat

Website

https://kolostat.com

Company type

Private

Founded year

1927

Headcount range

101–250 employees

Short description

Kolostat is a private mechanical contracting firm in Laval, Canada, founded in 1927, offering bid-and-spec and design-build mechanical construction plus recurring HVAC preventative maintenance to commercial and institutional clients.

Ownership category

akta.pro rank

Product category

Mechanical Contracting and HVAC Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industry

Refrigeration Systems Maintenance (Commercial/Industrial) (BPABACAI)

Keywords

• Mechanical contracting
• HVAC services
• Design-build construction
• Preventative maintenance
• Bid and spec contracting

Headquarters

HQ city

Laval

HQ country

Canada

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales

Core offering

Kolostat is a mechanical contracting firm that installs and services HVAC and building mechanical systems. The company offers bid-and-spec mechanical contracting, design-build mechanical contracting, and HVAC preventative maintenance and service for commercial, institutional, and industrial clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Bid & Spec Mechanical Contracting Mechanical contracting services delivered against engineered specifications prepared by external designers, covering HVAC and building mechanical system installation for commercial, institutional, and industrial clients.
• Design-Build Mechanical Contracting Integrated design-build delivery of mechanical and HVAC systems, in which Kolostat assumes responsibility for both engineering design and installation under a single contract for building owners and general contractors.
• HVAC Preventative Maintenance & Service Recurring and on-demand HVAC preventative maintenance and repair service for existing buildings, targeting facility operators and property managers who need ongoing reliability of mechanical systems.

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Direct peers

• Modern Niagara Group: Modern Niagara is a Canadian mechanical and building services contractor with a national footprint offering HVAC, plumbing, and preventative maintenance across institutional, commercial, and industrial clients. Like Kolostat, it competes on design-build, bid & spec, and recurring service — making it the most directly comparable peer.
• Black & McDonald: Black & McDonald is one of Canada's largest integrated mechanical, electrical, and facility services contractors, with HVAC installation, retrofit, and service capabilities comparable to Kolostat's. It targets similar institutional, commercial, and industrial customer segments across multiple provinces.
• Plan Group: Plan Group is a Toronto-based mechanical and electrical contractor providing HVAC, plumbing, and building services for commercial and institutional clients. Its integrated trade model and recurring service capability place it in direct competition with Kolostat in the Ontario/Quebec corridor.
• Ainsworth (Ainsworth Inc.): Ainsworth is a Canadian-based mechanical and electrical contractor delivering HVAC, building automation, and multi-trade construction services. It mirrors Kolostat's bid & spec, design-build, and service positioning within a similar institutional and commercial customer base.

Broad incumbents

• APi Group: APi Group is a global safety, specialty, and industrial services platform with HVAC and mechanical contracting operations across North America. It is a broad incumbent that overlaps with Kolostat in mechanical services but at materially larger scale and across multiple verticals.
• Harris Companies: Harris Companies is a US-based mechanical and building systems contractor offering design, installation, and service across HVAC, plumbing, and process piping. It competes for similar commercial, healthcare, and institutional mechanical work but at much broader geographic and capability scale.
• EMCOR Group: EMCOR is a US-headquartered broad mechanical & electrical contractor and facilities services provider with a substantial Canadian presence. It competes with Kolostat for large HVAC and building-systems projects while also offering much broader services at scale.

Regional players

• Stuart Olson (now part of Bird Construction): Stuart Olson, now operating under Bird Construction, is a Canadian general and mechanical contractor with substantial HVAC, electrical, and industrial services. It overlaps with Kolostat on commercial and institutional mechanical work but is headquartered in Western Canada.
• U.S. Mechanical: U.S. Mechanical is a Western Canada-based mechanical contractor offering HVAC, plumbing, and building services design-build and preventative maintenance. It is comparable to Kolostat in service mix but operates predominantly in a different geography (BC vs Quebec).

Emerging players

• BGIS (Brookfield Global Integrated Solutions): BGIS is a global facilities management and real-estate services provider with an increasing focus on HVAC preventative maintenance and mechanical services outsourcing. It competes with Kolostat for the recurring-service portion of the market, especially with institutional owners.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks4 records

Key highlights4 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kolostat