WK Duurzaam

What WK Duurzaam does

WK Duurzaam B.V. is a Dutch regional installation company, founded in 2019 and headquartered in Ridderkerk, that supplies and installs sustainable climate systems for residential and commercial customers in the Drechtsteden and Rotterdam region. The company is a subsidiary of the Spindler Gruppe, a group of family-owned installation and construction companies, several of which have operated for over a century. WK Duurzaam shares premises with sister company Sunpower4all, which delivers solar panels, EV chargers, and home batteries, enabling bundled whole-home energy offerings from a single supplier relationship.

Name

WK Duurzaam

Legal name

WK Duurzaam B.V.

Website

https://wkduurzaam.nl

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

WK Duurzaam B.V. is a Dutch regional installation company that supplies and installs heat pumps, air conditioning, and low-temperature climate systems for residential and SMB customers across the Drechtsteden and Rotterdam region.

Ownership category

akta.pro rank

Product category

HVAC Installation Services

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Heat Pump Repair & Maintenance (HSAOAHAD)

akta.pro secondary industry

Refrigeration Systems Maintenance (Commercial/Industrial) (BPABACAI)

Keywords

• Heat pump installation
• Air conditioning installation
• Sustainable HVAC services
• Hybrid heat pumps
• Maintenance contracts

Headquarters

HQ city

Gorinchem

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain, Others

Revenue model

1. Heat Pump and Air Conditioning Installation: The primary revenue stream is the sale and installation of heat pumps (hybrid and all-electric), air conditioning units, underfloor heating, and related climate systems. This includes both the hardware (equipment from brands like Panasonic, Daikin, Remeha) and the installation labour.
2. Maintenance and Service Contracts: WK Duurzaam offers biennial maintenance contracts for all-electric heat pumps and hybrid heat pump & CV-ketel systems. Service includes travel costs and labour. They also provide one-off maintenance visits. Contracts cover inspection, cleaning, and performance optimization.
3. Consultancy and Energy Advice: The company provides energy savings advice and bespoke consulting to help customers choose the right sustainable systems. This advisory service is bundled with installation but can also be standalone, including energy scans and subsidy guidance.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

WK Duurzaam is a Dutch installation company that sells, installs, and maintains sustainable climate systems — primarily hybrid and all-electric heat pumps, air conditioning units, low-temperature radiators (Jaga), underfloor heating, heat pump boilers, and water softeners. The company operates in the Drechtsteden and Rotterdam region as an authorized dealer of A-brand manufacturers (Panasonic, Daikin, Remeha, Jaga, Mitsubishi) and provides accompanying energy consultancy, ISDE subsidy guidance, and biennial maintenance contracts.

Product overview

WK Duurzaam is an installation company specializing in sustainable climate solutions for residential and commercial buildings. The core offering centers on heat pump systems—specifically hybrid heat pumps (Remeha Elga Ace, Remeha Elga Ace all-in-one, Intergas Xtend 5) and all-electric heat pumps (Panasonic Aquarea, Daikin Intergas)—alongside air conditioning systems (Panasonic Etherea series including 2.5kW, 3.5kW, 7.1kW, Multi Split, Z, and Zwart variants). Supporting products include Jaga radiators (Strada and Strada Hybrid with Low-H2O technology), underfloor heating, heat pump water heaters, water softeners (Boshuis), and unit enclosures (Climeleon, Evolar). The company provides full lifecycle services from advice and installation through ongoing maintenance and repair. WK Duurzaam operates exclusively with A-brand manufacturers including Remeha, Daikin, Panasonic, Jaga, and Mitsubishi, and is an officially recognized dealer for these brands.

Differentiator

Problem solved

Functional benefit

Products and services

• Remeha Elga Ace Hybrid Heat Pump Hybrid heat pump installed alongside an existing CV-ketel (boiler), extracting heat from outside air to support the heating system and save up to 70% on gas. Net price after ISDE subsidy averages €3,500–€5,000. Targeted at Dutch homeowners seeking to reduce gas consumption without full boiler replacement.
• Remeha Elga Ace All-in-One Heat Pump All-in-one hybrid heat pump combining hybrid pump and CV-ketel in one compact unit, ideal when the existing boiler also needs replacement. Net price after ISDE subsidy averages €7,500–€9,000.
• Panasonic Aquarea All-Electric Heat Pump Air-to-water heat pump available in air-water and water-water variants. Full-electric heat pump for complete off-gas transition. Includes Panasonic or Daikin units. Net price after ISDE subsidy averages €15,000–€25,000. Named best in Consumer Association test (November 2024).
• Panasonic Etherea Air Conditioning Advanced air conditioning system with inverter technology for both cooling and heating, featuring energy efficiency up to A+++ rating and built-in air filtration system. Models range from 2.5 kW to 7.1 kW. Pricing €1,200–€3,000 excluding installation. Targeted at residential and small business customers seeking cooling and supplementary heating.
• Daikin Intergas Heat Pump High-quality sustainable heat pump from Daikin, with models tailored to specific needs, capable of heating and cooling through floor heating or convector radiators. Includes Daikin Altherma and Intergas hybrid variants.
• Intergas Xtend 5 Hybrid Heat Pump Hybrid heat pump combining traditional boiler with heat pump efficiency. Features include holiday mode, silent mode, and hybrid operation optimization based on energy prices.
• Jaga Strada Hybrid Radiator Low-H2O radiator with Dynamic Boost Hybrid (DBH) system for rapid, efficient, and comfortable heating at low water temperatures. Features light cooling capability in combination with heat pumps.
• Jaga Strada Radiator High-performance heating solution with Low-H2O technology for energy-efficient heating, featuring sleek modern design. Recipient of the IF Design Award for innovative design.
• Vloerverwarming (Underfloor Heating) Underfloor heating system using radiant heat transfer to evenly distribute warmth across room surfaces at lower air temperatures. Used to support heat pump installations and enable low-temperature heating.
• Warmtepomp Boiler (Heat Pump Water Heater) Heat pump water heater for efficient domestic hot water production, used to complement heat pump heating systems.
• Boshuis Waterontharder (Water Softener) Water softener that removes calcium and magnesium from tap water, preventing limescale buildup in plumbing and appliances.
• Climeleon Outdoor Unit Enclosure Enclosure solution for outdoor heat pump or air conditioning units, providing aesthetic integration with surroundings.
• Evolar Outdoor Unit Enclosure Outdoor unit enclosure for discreet installation of heat pump or air conditioning outdoor units.
• Heat Pump and Air Conditioning Maintenance Services Preventive maintenance services for heat pumps (all-electric and hybrid), air conditioning, and boilers. Includes biennial maintenance contracts with travel costs and labor included, plus one-off maintenance visits covering inspection, cleaning, and performance optimization. Also includes emergency support outside office hours.

Quantifiable outcome

• Hybrid heat pump saves up to 70% on gas
• +2 more outcomes

Named customers6 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Ten partnerships are on record, tiered core, secondary and minor.

• Spindler FamiliecoreOthersWK Duurzaam is a subsidiary of the Spindler Familie, a group of family companies active in installation technology, security technology, sustainable energy, and construction. Some member companies have operated for over 100 years. The Spindler Familie provides institutional backing, shared resources, and cross-selling opportunities. WK Duurzaam shares premises with sister company Sunpower4all.
• PanasoniccoreTechnology or IntegrationWK Duurzaam is an official recognized dealer and installer of Panasonic heat pumps and air conditioning systems. They offer the Panasonic Aquarea (best-in-test 2024) and Panasonic Etherea air conditioning product lines.
• DaikincoreTechnology or IntegrationWK Duurzaam is an official recognized dealer and installer of Daikin heat pumps and air conditioning systems, including Daikin Intergas hybrid heat pumps and Daikin Altherma products.
• RemehacoreTechnology or IntegrationWK Duurzaam is an official recognized dealer and recognized Remeha Experience Center partner for Remeha heat pumps, including the Elga Ace hybrid and Elga Ace all-in-one models.
• JagasecondaryTechnology or IntegrationWK Duurzaam is an authorized Jaga dealer offering Jaga Strada and Strada Hybrid radiators featuring Low-H2O technology and Dynamic Boost Hybrid (DBH) system.
• Mitsubishi ElectricsecondaryTechnology or IntegrationWK Duurzaam is a dealer and installer of Mitsubishi Electric air conditioning systems, offering products including the Mitsubishi 7 kW floor model.
• Energieloket RivierenlandcoreGTM or Marketing PartnerWK Duurzaam is a partner of Energieloket Rivierenland, a local government-adjacent energy advisory hub. The partnership provides referral traffic from energy-conscious homeowners seeking professional advice on sustainable home upgrades.
• De HypothekerminorGTM or Marketing PartnerCross-referral partnership with De Hypotheker, a national mortgage advisory chain. Homeowners refinancing or purchasing energy-efficient homes are referred to WK Duurzaam for sustainable installation services.
• Sunpower4allcoreStrategic or Co-development PartnerSunpower4all operates from the same premises as WK Duurzaam, offering solar panels, EV chargers, and home batteries. The close proximity enables cross-selling and bundled offerings for customers seeking comprehensive home energy solutions.
• WoonwijzerminorGTM or Marketing PartnerWoonwijzer is a partner organization that refers homeowners to WK Duurzaam for sustainable installation services.

Scale indicators3 records

Recent moves6 records

Expansion highlights7 records

Broad incumbents

• Feenstra: Large, established Dutch HVAC service company with a national footprint in heating, ventilation, and air-conditioning installation and maintenance. Overlaps with WK Duurzaam on heat-pump and AC installations but operates at much greater scale and broader service scope.
• Unica: Large Dutch technical services installer covering HVAC, electrical, and sustainable energy solutions across commercial and residential markets. Competes for the same SME and homeowner heat-pump retrofit demand as WK Duurzaam but with broader portfolio and nationwide reach.
• Croonwolter&dros (TBI): Large Dutch MEP (mechanical, electrical, plumbing) installer active in HVAC, heat pumps, and sustainable building solutions. Comparable technical scope and certification requirements, but typically serves larger commercial and institutional projects than WK Duurzaam.
• ENGIE Services Nederland: Major Dutch energy and facility-services provider offering heat-pump and HVAC installation and maintenance as part of a broader portfolio. Overlaps with WK Duurzaam's sustainable-installation offering but operates nationally and serves larger commercial accounts.

Direct peers

• Kemkens: Mid-sized Dutch installation firm with comparable offerings in heat pumps, hybrid systems, air conditioning, and sustainable home retrofits across regional Netherlands. Competes head-to-head with WK Duurzaam for residential off-gas conversions in regional markets.
• Van Dorp Installaties: Dutch technical installer providing HVAC, heat pump, and climate-control installations to residential and SME customers. Comparable in product mix (heat pumps, AC, underfloor heating) and target customer (homeowners and small businesses) to WK Duurzaam.
• Homij: Dutch installation company focused on sustainable building technology, including heat pumps and climate systems for residential and commercial clients. Comparable in service offering, certification requirements, and project-based B2B/B2C business model.

Emerging players

• Itho Daalderop: Dutch HVAC equipment manufacturer and installer specializing in heat pumps, ventilation, and domestic hot-water solutions. Partly comparable as an integrated manufacturer-installer competing in the same residential heat-pump retrofit space.

Others

• Remeha: OEM manufacturer of the Elga Ace hybrid and all-in-one heat pumps that WK Duurzaam is a recognized Experience Center partner for. Comparable as a supplier-brand whose dealer economics shape WK Duurzaam's product mix and pricing.
• Panasonic Heating & Cooling Solutions: OEM supplier whose Aquarea heat pumps and Etherea AC units WK Duurzaam installs. Comparable as a key brand partner whose dealer network (including WK Duurzaam) competes for the same end customer demand.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance6 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 WK Duurzaam