What Instain Installatietechniek does

Instain Installatietechniek is a Dutch residential installation-services contractor headquartered in Terwolde, with additional offices in Apeldoorn and Zuidbroek. The company designs, installs, and maintains central heating (CV), heat pumps, ventilation, air conditioning, solar PV, electrical, and plumbing systems for owner-occupied and tenanted housing stock, and is differentiated by deep specialization in CLV (collective flue gas extraction) renovations carried out across large housing-corporation portfolios.

The company operates a dual-track business model combining project-based installation and renovation work with recurring maintenance and service contracts. Its institutional client base includes Dutch housing corporations, real estate companies, municipalities, and general contractors, alongside a smaller direct-to-consumer residential book. Notable multi-year engagements include an 8-year framework with Gemeente Deventer covering CV and heating-installation services, a partnership with Woonstichting de Marken, and CLV renovation work delivered alongside partners such as Morrenhof-Jansen. The company is also extending into adjacent energy-transition categories including EV charging, battery storage, and district-heating infrastructure.

In May 2026 Instain was acquired by Hemink Groep, positioning the business within a larger technical-services platform with greater capacity to scale headcount, cross-sell into adjacent service lines, and pursue further regional consolidation. With 500+ employees and a credentialed, regionally concentrated installer base, Instain competes primarily on technical specialization in CLV renovations, response-time SLA on service work, and the ability to deliver large, multi-year housing-corporation frameworks that smaller generalist installers cannot easily staff.

Name

Instain Installatietechniek

Legal name

Instain Installatietechniek

Website

https://instain.nl

Company type

Private

Founded year

1988

Operating status

Operating

Short description

Instain Installatietechniek is a Dutch residential installation contractor specializing in HVAC, heat pumps, solar, electrical, plumbing, and CLV renovations, serving housing corporations, municipalities, and homeowners across three regional offices.

Ownership category

akta.pro rank

Product category

Building installation and maintenance services (HVAC, electrical, plumbing, and sustainable energy)

NAICS

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

SIC

Services-To Dwellings & Other Buildings (7340)

akta.pro primary industry

Residential HVAC System Installation (Furnace/AC/Heat Pump) (HSAOAGAA)

akta.pro secondary industries

New Construction HVAC Rough-In & Final Set (Residential/Light Commercial) (HSAOAGAL), Hard Services (MEP/HVAC, Electrical, Plumbing) (BPABAAAA)

Keywords

• HVAC installation services
• Heat pump solutions
• Solar panel installation
• Building maintenance services
• Sustainable energy solutions

Headquarters

HQ city

Terwolde

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain, Technology or R&D

Revenue model

1. Installation Services: Installation of new technical building systems including CV-ketels, heat pumps, air conditioning, ventilation, electrical installations, solar panels, and plumbing. Work encompasses both new build and renovation projects for residential and commercial clients. Revenue is generated on a project basis.
2. Service & Maintenance Contracts: Preventive maintenance and repair services for installed equipment. Instain offers maintenance contracts for CV-ketels and hybrid heat pumps (every 18 months), with ongoing service and emergency repair work for housing corporations, real estate companies, and individual homeowners. Provides recurring revenue through contract-based relationships.
3. 24/7 Emergency/Storingsdienst: Round-the-clock emergency service for urgent situations including gas leaks, leaking water pipes, or defective CV-ketels. Emergency services are accessed through the company's regular phone lines at each location.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Instain Installatietechniek designs, installs, and maintains residential technical and sustainable energy installations across the Overijssel/Gelderland region of the Netherlands. The portfolio covers central heating (CV-ketels), heat pumps, solar panels, ventilation (including WTW), air conditioning, electrical installations, plumbing and sanitary, as well as complete boiler room replacements and specialist CLV (collective flue gas extraction) renovations for multi-story housing. Service delivery spans new build, renovation, preventive maintenance contracts, and a 24/7 emergency breakdown service for both individual homeowners and B2B clients such as housing corporations, real estate owners, contractors, and municipalities.

Product overview

Instain Installatietechniek is an innovative installation company offering a comprehensive portfolio of heating, cooling, electrical, plumbing, and sustainable energy solutions for residential and commercial properties. The core offering includes CV-installatie (central heating), warmtepompen (heat pumps), zonnepanelen (solar panels), ventilatiesystemen (ventilation), airconditioning, and electrical installations. Specialized services include CLV-renovaties (collective smoke gas ventilation) for multi-story buildings, rookgasrenovatie (smoke gas renovation), and ketelvervanging (boiler replacement). The company provides service modules through onderhoudscontracten (maintenance contracts) and a 24/7 storingsdienst (emergency service), complemented by digital tools like a solar panel calculator. Services target housing corporations, property management companies, contractors, and private homeowners in the Netherlands.

Differentiator

Problem solved

Functional benefit

Products and services

• CV-installatie (Centrale Verwarming) Installation and maintenance of central heating systems and high-efficiency boilers (HR-ketel) for reliable warmth and hot water supply in residential homes. Targeted at individual homeowners seeking heating reliability.
• Warmtepompen Heat pump systems that extract warmth from air, ground, or water to heat or cool residential properties efficiently. Targeted at individual homeowners transitioning away from gas-fired heating.
• Elektrische installaties Electrical installation services including lighting, wall outlets, circuit breaker panels, and smart lighting systems for safety and ambiance in residential properties. Targeted at individual homeowners.
• Loodgieterswerk & sanitair Plumbing and sanitary services covering water pipes, fixtures, bathroom and kitchen installations, roof and zinc work, and leak detection. Targeted at individual homeowners.
• Zonnepanelen Solar panel installation services that convert sunlight into electricity, reducing reliance on fossil fuels and lowering energy costs for residential properties. Targeted at individual homeowners.
• Ventilatiesystemen Ventilation systems including WTW (heat recovery ventilation / balanced ventilation) for healthy indoor climate, balanced air circulation, and energy savings in residential properties. Targeted at individual homeowners.
• Airconditioning Air conditioning systems for residential cooling, heating, and air filtration, including modern AC units that can serve as an alternative to central heating. Targeted at individual homeowners.
• Duurzame energieoplossingen Comprehensive sustainable energy solutions including EV charging stations, battery storage systems, and smart energy management for residential properties. Targeted at individual homeowners decarbonizing their homes.
• CLV-renovaties Specialist collective smoke/flue gas ventilation (CLV) renovations for multi-story residential buildings, replacing CV-ketels and renovating CLV channels. Aimed at housing corporations, real estate owners, and as a subcontracted service for larger installation firms. Annually audited certification is required.
• Rookgasrenovatie en ketelvervanging Smoke gas renovation and boiler replacement services for apartment buildings, using specialized systems such as the Miniflex 60 system from Burgerhout. Targeted at real estate management firms and housing corporations.
• Ketelhuizen vervanging Complete boiler room replacement services, replacing multiple boiler units (e.g., Remeha Quinta 115) in cascade configurations for housing corporations. Includes emergency mobilization as demonstrated at Nederwoon's IJsselstraat project.
• Onderhoudscontract Preventive maintenance contract covering CV-ketels, hybrid heat pumps, air conditioning, solar panels, and ventilation systems, with 18-month maintenance intervals. Available to individual homeowners, housing corporations, and real estate owners as a recurring service.
• 24/7 Storingsdienst Round-the-clock emergency breakdown service for gas leaks, leaking water pipes, and defective central heating, ensuring safe and comfortable living environments. Accessible via regular phone lines at each Instain location and used by both homeowners and B2B clients.

Quantifiable outcome

• Emergency boiler room replacement: 3 of 6 boiler rooms replaced in a single Saturday with 13 technicians, restoring hot water and heating by evening.
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eight partnerships are on record, tiered core, flagship and minor.

• Morrenhof-Jansen InstallatiebedrijvencoreStrategic or Co-development Partner · 10 July 2026Morrenhof-Jansen, a full-service installation company from Vriezenveen specialized in electrotechnology, mechanical engineering, sustainable energy, and service & maintenance, engaged Instain as specialist subcontractor for a large-scale CLV renovation project at the Rustweg in Almelo. The complexity of the project — involving collective flue gas extraction in stacked construction — required Instain's specific CLV certification and expertise that Morrenhof-Jansen did not hold in-house. The collaboration includes joint planning, coordination with residents, and ongoing technical communication.
• BurgerhoutcoreTechnology or Integration · 10 July 2026Burgerhout, a producer of technical systems for flue gas extraction, heat pumps, and ventilation, collaborated with Instain and Morrenhof-Jansen on the CLV renovation project at Almelo. Burgerhout produced all project materials and provided expert technical advice. The Miniflex 60 system from Burgerhout was selected for the NMG Vastgoedbeheer project as well. Burgerhout remains available for technical questions throughout the project execution.
• Hemink GroepflagshipStrategic or Co-development Partner · 27 May 2026Instain became part of the Hemink Groep as of May 2026. This marks a continuation of Instain's growth trajectory, which began as J. Steenbrugge installation company under shareholder Matthijs de Pater. Hemink Groep shares Instain's values of craftsmanship, involvement, reliability, and future focus. Instain will maintain its name, people, and way of collaborating; existing contacts remain reachable and partnerships continue. The acquisition provides additional scale for investment in innovation, quality, and sustainability.
• Woonstichting de MarkencoreStrategic or Co-development Partner · 16 April 2026Instain and Woonstichting de Marken entered a collaboration agreement for replacing technical installations within the housing stock of Woonstichting de Marken. The partnership aims to ensure homes remain technically up-to-date, with a shared focus on resident satisfaction. At each replacement moment, the parties critically assess opportunities for more sustainable solutions.
• Gemeente DeventerflagshipStrategic or Co-development Partner · 5 March 2026The municipality of Deventer selected Instain as one of two fixed partners for installing heat network delivery sets and providing service and maintenance for the Zandweerd district heat network project. The 8-year partnership was awarded after a tender process in which Instain stood out for its pragmatic approach, flexibility, and willingness to learn. Service level includes response within one hour of a resident call.
• NMG VastgoedbeheercoreStrategic or Co-development Partner · 7 July 2025Instain Apeldoorn executed a flue gas renovation and boiler replacement project for NMG Vastgoedbeheer in Lochem, using the Miniflex 60 system from Burgerhout. The project demonstrated close partnership between client and installer, with attention for quality, resident comfort, and clear communication. The collaboration resulted in a safe and future-proof installation.
• NederwooncoreStrategic or Co-development Partner · 16 December 2024Instain was engaged by Nederwoon for an urgent boiler room replacement project: 6 boiler rooms at the IJsselstraat in Apeldoorn, each containing six Remeha Quinta 115 boilers. The project was executed in emergency conditions on a Saturday with 13 technicians. Three boiler rooms were replaced in a single day, with the remaining three scheduled for the following week. Instain subsequently provides ongoing daily maintenance for these properties.
• Herms BVminorOthers · 16 December 2024Herms BV provided crane equipment and services to enable the boiler room replacement at the IJsselstraat in Apeldoorn. Due to the buildings' roofs being fully covered with solar panels and limited space around the buildings, crane lifting was the only viable method for removing and installing the new boiler systems.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Unica Installatietechniek: Major Dutch technical installation firm offering HVAC, electrical, plumbing, fire safety, and building services across residential and commercial segments. Comparable in full-service residential installation and maintenance offering.
• Kemkens Installatiebedrijf: Mid-sized Dutch installation company providing HVAC, electrical, and plumbing services primarily to residential and small commercial customers. Comparable in residential service focus and regional operations.
• Van Dorp Installaties: Large Dutch installation company with strong focus on residential and commercial HVAC, plumbing, and electrical services. Comparable in customer base (housing corporations, property managers) and service portfolio.
• Feenstra Installatie: One of the largest Dutch installation companies (subsidiary of Unica), providing HVAC, electrical, plumbing, and renewable energy solutions to residential and commercial customers. Direct competitor in residential HVAC and maintenance services.
• Homij Technische Installaties: Dutch technical installation company (part of VolkerWessels) covering HVAC, electrical, plumbing, and building services for residential and commercial clients. Comparable in service breadth and housing corporation market focus.
• Brink Installatietechniek: Regional Dutch installation company serving residential and commercial clients with HVAC, electrical, and plumbing services. Comparable in regional installation focus and multi-trade service delivery.
• Morrenhof-Jansen Installatiebedrijven: Full-service Dutch installation company from Vriezenveen specializing in electrotechnology, mechanical engineering, sustainable energy, and service & maintenance. Closely comparable to Instain in service portfolio and customer profile; engaged Instain as specialist subcontractor for CLV work.

Others

• Hemink Groep: Parent company of Instain since May 2026, a diversified group focused on integrated property maintenance. Provides scale and complementary services to Instain's installation offering.

Broad incumbents

• Eneco Warmte & Installatie: Major Dutch energy company with heat network and installation services operations. Competes for heat network contracts similar to Instain's Deventer warmtenet partnership.
• ENGIE Services Nederland: Large Dutch subsidiary of global energy and services group ENGIE, providing installation, maintenance, and energy services including HVAC and heat networks. Larger-scale incumbent with overlapping capabilities in residential and district heating markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/InstainTerwoldeInstallatietechniek
• LinkedInlinkedin.com/company/instain-installatietechniek
• Instagraminstagram.com/instain_installatietechniek

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Instain Installatietechniek