Ter Harmsel

What Ter Harmsel does

Ter Harmsel (Installatiebedrijf Ter Harmsel) is a Dutch full-service installation company headquartered at Nijverheidsstraat 22 in Rijssen, Netherlands, operating continuously since its founding in 1967. The company employs approximately 60 people and serves both residential customers within an approximate 20 km radius of Rijssen and commercial project clients across the broader Twente region. Its core offering spans electrotechnical and werktuigbouwkundige (mechanical) installations including central heating boilers, heat pumps, air conditioning, plumbing, electrical, and sanitary bathroom solutions. The company holds VCA and BRL 6000 certifications, is a member of Techniek Nederland, and holds CO-certification under the Dutch Gasketelwet, making it legally qualified for certified gas-boiler work.

The technical portfolio is built around established OEM brands: Remeha, Nefit, and Intergas boilers (listed at €2,595–€2,995 excl. VAT); hybrid, ventilation, and fully electric heat pumps from Nefit-Bosch, NIBE, and Mitsubishi Electric; and split, multi-split, and mobile air conditioning units. The Baderie Ter Harmsel showroom in Rijssen provides a physical retail channel for sanitary and bathroom products under the national Baderie franchise network. Service offerings include new installation, renovation, repair, and three tiers of recurring maintenance subscription (Zeker Basis, Zeker Plus, All-in) at €10.95–€27.55/month, with 24/7 emergency service for subscribers.

Revenue is generated through four streams: project-based installation services for residential and commercial clients, recurring maintenance subscriptions, hardware sales of boilers and heat pumps bundled with installation, and hourly-rate service for small repair jobs. Goto-market is sales-led and relationship-driven, emphasizing personal advisory service, fast response, and direct outreach via phone, the company website, and a knowledge bank. Named commercial customers include Presolid Home (heat pump project in Goor) and Roosdom Tijhuis, which on January 25, 2024 acquired a majority stake in Ter Harmsel, with founder Erik ter Harmsel remaining as director and minority shareholder.

Name

Ter Harmsel

Legal name

Installatiebedrijf Ter Harmsel

Website

https://terharmsel-rijssen.nl

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

11–50 employees

Short description

Ter Harmsel is a Dutch full-service installation company founded in 1967 in Rijssen, serving residential customers within ~20 km and commercial project clients in the Twente region. It provides boilers, heat pumps, air conditioning, plumbing, electrical, and sanitary bathroom solutions via an in-house team of approximately 60 employees.

Ownership category

akta.pro rank

Headquarters

HQ city

Rijssen

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Installation services: The company earns revenue by providing installation services for electrical and mechanical systems in residential and commercial buildings, including new construction and renovation projects.
2. Maintenance subscriptions: Ter Harmsel offers recurring monthly subscription plans (Zeker Basis, Zeker Plus, All-in) for boiler and heat pump maintenance, providing predictable recurring revenue from subscribers.
3. Product sales (boilers and heating equipment): The company sells heating equipment including Remeha, Nefit, and Intergas boilers at disclosed prices (ranging from €2,595 to €2,995 excl. VAT), bundled with installation services.
4. Hourly-rate service: For small installation jobs, Ter Harmsel charges on an hourly basis, providing a flexible revenue stream for minor repairs and adjustments.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Ter Harmsel is a full-service installation company that sells, installs, and maintains heating systems (CV-ketels and heat pumps), air conditioning, plumbing, electrical, and sanitary/bathroom installations for residential and small commercial buildings in and around Rijssen, Netherlands. The company also operates the Baderie Ter Harmsel bathroom showroom and offers recurring maintenance subscription plans for installed equipment.

Product overview

Ter Harmsel is a full-service installation company offering a unified portfolio of heating, cooling, plumbing, electrical, and bathroom solutions for residential and commercial buildings. The core offering centers on CV-ketels (central heating boilers) from brands including Remeha, Nefit, and Intergas, complemented by heat pumps (hybrid, fully electric, and ventilation types) and air conditioning systems (split, multi-split, and mobile units). Services include installation, maintenance, and repair with subscription plans (Zeker Basis, Zeker Plus, All-in), while the Baderie Ter Harmsel bathroom showroom provides sanitary solutions. The company operates as both a product reseller (selling and installing equipment) and a service provider.

Differentiator

Problem solved

Functional benefit

Brands

• Baderie Ter Harmsel: Bathroom showroom and sanitary solutions brand operating under the Baderie franchise network.

Products and services

• Central Heating Boiler Sales and Installation
• Heat Pump Installation
• Air Conditioning Installation
• Bathroom Design and Installation (Baderie Ter Harmsel)
• Electrical Installations
• Plumbing Services
• Hourly Installationservice
• Maintenance Subscription Plans

Quantifiable outcome

• Heat pumps can reduce energy consumption and improve energy label ratings for homes.

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• BaderiecoreStrategic or Co-development PartnerTer Harmsel is part of Baderie, operating a Baderie showroom for bathroom and sanitary products. As a Baderie partner, Ter Harmsel offers a wide range of sanitary products from top brands and its own private label, carefully curated for every style and budget. Customers can have bathrooms designed together with Ter Harmsel specialists.

Scale indicators4 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Feenstra: Dutch installation company (part of VolkerWessels) providing heating, plumbing, electrical, and renewable-energy installations for residential and small commercial customers. Closely comparable to Ter Harmsel in service portfolio, though operating at significantly larger national scale.
• Breman Installatiegroep: One of the largest Dutch installation groups, delivering HVAC, plumbing, electrical, and sanitary solutions for residential and commercial buildings. Directly comparable multi-trade service model to Ter Harmsel, but with national coverage.
• HOMIJ: Dutch technical installer (VolkerWessels subsidiary) focused on mechanical and electrical installations for new-build residential and commercial projects. Comparable to Ter Harmsel's project/developer-facing business, especially the work performed for Roosdom Tijhuis.
• Unica: Major Dutch technical services and installation company delivering HVAC, electrical, plumbing, and energy solutions across residential, commercial, and industrial segments. Overlaps with Ter Harmsel across nearly the entire service portfolio at national scale.
• Van Dorp Installaties: Dutch installation company offering heating, cooling, plumbing, electrical, and sanitary services with a regional branch network. Directly comparable in service mix and multi-trade one-stop positioning to Ter Harmsel.
• Comfort Partners: Dutch installer specializing in heating, hot water, and ventilation for residential customers with a strong service-and-maintenance subscription model. Closely comparable to Ter Harmsel in residential heating focus and recurring maintenance offerings.

Broad incumbents

• ENGIE Services Nederland: Large multinational energy and technical services provider operating in the Netherlands, offering HVAC, energy, and facility services for commercial and residential markets. Comparable in capability set but operates as a broad incumbent rather than a regional specialist.
• Equans Nederland: International technical services and installation provider with Dutch operations covering HVAC, electrical, and energy solutions. Comparable in technical scope to Ter Harmsel but addresses the market as a broad multi-segment incumbent.

Others

• Remeha (BDR Thermea Group): Leading Dutch manufacturer of CV-ketels and heating systems whose products Ter Harmsel resells and installs. Adjacent ecosystem participant — a key supplier rather than a direct competitor.
• Baderie: Dutch franchise network of bathroom and sanitary showrooms; Ter Harmsel operates the local Baderie Ter Harmsel showroom. Comparable as an adjacent participant in the same sanitary retail channel rather than a competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/terharmselsanitair
• LinkedInlinkedin.com/company/installatiebedrijf-ter-harmsel-b-v-
• Instagraminstagram.com/terharmselrijssen

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

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 Ter Harmsel