What Warmgarant does

Warmgarant is a Dutch direct-to-consumer heating solutions provider headquartered in Diemen, Netherlands, specializing in the sale, rental, installation, and servicing of Intergas central heating boilers (CV-ketels) and hybrid heat pumps for residential homeowners across the Netherlands. The company operates as the exclusive national installation partner of Intergas, offering a tightly curated product portfolio spanning the HRE, HReco, Xtreme, and Prestige combi-boiler series (CW3–CW6 classifications, priced €1,699–€2,649) alongside the Intergas Xtend and Xtend Eco hybrid air/water heat pumps (€3,499 net of €1,925–€2,125 ISDE subsidy). All boilers are hybrid-ready with OpenTherm protocol support, enabling later integration with a heat pump to reduce gas consumption by up to 80%. Smart thermostats (Honeywell Home or Intergas Comfort Touch) are bundled with every purchase.

Warmgarant monetizes through three primary revenue streams: (1) one-time boiler and heat pump sales with all-inclusive installation, (2) monthly rentals of CV-ketels at €33–€44/month over 12-year all-inclusive contracts (with optional buyout after year two), and (3) a recurring service subscription at €15.74/month covering maintenance, repairs, and 24/7 emergency support for up to 15 years. Additional revenue is generated from non-standard installation work billed separately. The go-to-market is primarily e-commerce via warmgarant.nl, supported by a 7-day-a-week phone advisory line (085-401-2233), an online CV-ketel selection wizard, and free non-binding quotes. Distribution is asset-light: Warmgarant coordinates customer appointments while physical installation is executed by a nationwide network of 75+ independent installation partner companies with approximately 600 CO-certified and InstallQ-recognized installers. Marketing relies heavily on SEO-optimized educational content, social media, and Kiyoh customer reviews (2,690+ reviews averaging 9/10, with 97–99% recommendation rates). All Intergas Xtreme 30 and 36 models received the Consumentenbond 'Beste uit de Test' award in January 2025, and the company recently relocated its headquarters to a new Diemen office following a fire at its previous premises.

Name

Warmgarant

Legal name

Warmgarant

Website

https://warmgarant.nl

Company type

Private

Operating status

Operating

Headcount range

251–500 employees

Short description

Warmgarant is a Dutch direct-to-consumer heating solutions provider that sells, rents, installs, and services Intergas central heating boilers and hybrid heat pumps for residential homeowners across the Netherlands via a nationwide network of 600+ certified installers.

Ownership category

akta.pro rank

Product category

Residential Heating Equipment Installation

NAICS

Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers (42372)

SIC

Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

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

akta.pro secondary industries

Boiler & Hydronic Heating System Installation (HSAOAGAF), Heat Pump Repair & Maintenance (HSAOAHAD), Heat Pump & Smart HVAC Controller Integration (HSAOANAD), Hydronic/Baseboard Radiant Heating Service (HSAOACAE)

Keywords

• Central heating boilers
• Hybrid heat pumps
• Heating installation services
• Boiler rental
• HVAC equipment

Headquarters

HQ city

Diemen

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. CV-Ketel Sales (Purchase): Warmgarant sells Intergas CV-ketels (HRE, HReco, Xtreme, Prestige series) directly to homeowners. Prices range from €1,699 to €2,649 for purchase. All prices include standard installation and a smart thermostat. A €150 deposit is required to confirm an order.
2. Hybrid Heat Pump Sales: Sale of Intergas Xtend and Xtend Cool Grey hybrid heat pumps. The full package costs €3,499 after ISDE subsidy, including the heat pump, buffer vessel, Comfort Touch thermostat with gateway, installation, and 5-year warranty.
3. CV-Ketel Rental: Warmgarant offers CV-ketels for rent over a 12-year period. Monthly rental fees range from €33 to €44 depending on the model selected. The rental is all-inclusive, covering installation, maintenance, and 24/7 service. The contract can be bought out after 2 years.
4. Service Subscription: Monthly all-in service subscription at €15.74/month for CV-ketel maintenance and repairs. Covers periodic maintenance (~every 18 months), 24/7 emergency service, preventive part replacement, no call-out fees, no labor costs, no material costs. Offered for up to 15 years. Only available for Intergas ketels up to 3 years old sold by Warmgarant.
5. Additional Installation Services: Revenue from non-standard installation work (morewerk), such as smoke exhaust pipe replacement (€185 for standard replacement), connection to propane gas, or solar boiler integration. These are billed separately from the base installation.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

Warmgarant supplies, installs, and services Intergas central heating combi-boilers (CV-ketels) and Intergas Xtend hybrid heat pumps for Dutch residential homeowners, with both purchase and 12-year rental options. Each installation includes a free smart thermostat, standard installation by certified local installers, and optional add-on all-in service subscription (€15.74/month) covering maintenance, repairs, and 24/7 emergency service.

Product overview

Warmgarant is a Dutch heating solutions company offering a unified portfolio of Intergas central heating boilers (CV-ketels), hybrid heat pumps (warmtepompen), and related services. Their core products include the Intergas Xtreme, HRE, and HReco series combi-boilers (CW3-CW6 classifications), ranging from compact models for apartments (HRE 24/18 A) to high-capacity units for large homes (Prestige, HRE 36/30 A). They complement these with the Intergas Xtend, Xtend Cool Grey, and Xtend Eco hybrid heat pumps that work in combination with the boilers to reduce gas consumption by up to 80%. The Xtore hot water storage tank is an add-on for the Xtend heat pumps. Smart thermostats (Comfort Touch, Honeywell Home) connect via OpenTherm protocol for efficient operation. Services include installation, an all-in service subscription (€15.74/month), and 24/7 support. All products are CO-certified and InstallQ recognized.

Differentiator

Problem solved

Functional benefit

Products and services

• Intergas Xtreme 30 (CW4) CV-ketel Central heating combi-boiler classified CW4, hybrid-ready for future heat pump connection, delivering 16 l/min of warm water at 40°C with efficiency above 110%. Selected by Consumentenbond as best CV-ketel 2025. Purchased at €2,095 all-in (installation + free smart thermostat).
• Intergas Xtreme 36 (CW5) CV-ketel Central heating combi-boiler classified CW5, hybrid-ready, delivering 17 l/min of warm water at 40°C with efficiency above 120% via dual stainless-steel heat exchangers. Selected best CV-ketel 2025 by Consumentenbond. Purchased at €2,195 all-in.
• Intergas Prestige (CW6) CV-ketel High-capacity central heating combi-boiler classified CW6 for highest hot-water demand and dual tap points. Delivers 20 l/min of warm water at 40°C via Quickfill system for instant hot water. Hybrid-ready. Purchased at €2,649 all-in.
• Intergas HRE 24/18 A (CW3) CV-ketel Compact central heating combi-boiler classified CW3 for apartments and small homes. Hybrid-ready, delivering approximately 10 l/min of warm water at 40°C with very low gas consumption. Purchased at €1,699 all-in.
• Intergas HRE 28/24 A (CW4) CV-ketel Central heating combi-boiler classified CW4 for single-family homes or large apartments. Hybrid-ready, delivering 12.5 l/min of warm water at 40°C. Purchased at €1,799 all-in.
• Intergas HRE 36/30 A (CW5) CV-ketel Powerful central heating combi-boiler classified CW5 for large detached houses. Hybrid-ready, delivering up to 15 l/min of warm water at 40°C while maintaining high energy efficiency. Purchased at €1,899 all-in.
• Intergas HReco 24 (CW3) CV-ketel Small energy-efficient central heating combi-boiler from the latest HR generation with an innovative 2-in-1 heat exchanger that maximizes efficiency for both heating and hot water. Hybrid-ready. Purchased at €1,845 all-in.
• Intergas HReco 30 (CW4) CV-ketel Popular central heating combi-boiler with smart Dutch-engineered technology delivering fast hot water and efficient home heating at high energy efficiency. Hybrid-ready. Purchased at €1,945 all-in.
• Intergas HReco 36 (CW5) CV-ketel Top-performing central heating combi-boiler combining innovation and technology with innovative heat exchanger, maximum CO2 reduction, quiet operation, and extreme durability. Tested best multiple times. Hybrid-ready. Purchased at €2,045 all-in.
• Intergas Xtend hybrid heat pump 5 kW hybrid air/water heat pump working in tandem with a CV-ketel to reduce gas consumption by up to 80%. COP of 4.49, R32 refrigerant, A++ energy class, operates down to -15°C. Full package at €3,499 after €1,925 ISDE subsidy, includes buffer vessel, Comfort Touch thermostat with gateway, standard installation, and 5-year warranty.
• Intergas Xtend Cool Grey hybrid heat pump Newest variant of the Intergas Xtend 5 kW hybrid air/water heat pump, paired with a high-efficiency CV-ketel for heating and hot tap water. Reduces gas consumption by up to 80%. Full package at €3,499 after €1,925 ISDE subsidy.
• Intergas Xtend Eco hybrid heat pump Sustainable 5 kW hybrid air/water heat pump using R290 (propane) refrigerant with A+++ energy label and all-electric-ready capability for future full electric conversion. COP of 4.49. Eligible for €2,125 ISDE subsidy with estimated 6-year payback and approximately €1,000/year energy-bill reduction.
• Intergas Xtore warm water storage tank Hot water storage tank available in 40L (€1,799) and 80L (€1,999), including BTW and installation. Pairs with the Intergas Xtend hybrid heat pump and can optionally combine with solar panels. Pre-heats tap water using heat from the heat pump's CV circuit. Flexible horizontal or vertical installation.
• CV-ketel rental program 12-year all-inclusive monthly rental of an Intergas CV-ketel. Monthly fees range from €33 (HRE 24/18 A CW3) to €44 (Prestige CW6). Includes standard installation (€149 contribution), free smart thermostat, maintenance, repairs, and 24/7 service. Contract can be bought out after 2 years.
• All-in service subscription (Service Abonnement) Monthly service subscription at €15.74/month covering periodic maintenance (~every 18 months), preventive part replacement, 24/7 emergency service, breakdown repairs with no call-out, labor, or material costs. Up to 15 years of coverage for purchased Intergas ketels up to 3 years old; one-time €50 initial inspection fee applies.
• Additional installation services (morewerk) Non-standard installation work billed separately from the base all-in price, including smoke exhaust pipe replacement (€185 standard), propane gas connection, and solar boiler integration. Available alongside any boiler or heat pump installation.

Quantifiable outcome

• Up to 80% reduction in gas consumption with the Intergas Xtend hybrid heat pump
• +5 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature8 records

Partnerships

Four partnerships are on record, tiered core.

• IntergascoreTechnology or IntegrationWarmgarant is a national installation partner of Intergas, exclusively selling Intergas CV-ketels (HRE, HReco, Xtreme, Prestige series) and Intergas hybrid heat pumps (Xtend, Xtend Cool Grey, Xtend Eco, Xtore warm water tank). This exclusive brand focus enables deep product expertise and optimized customer solutions. Intergas is a Dutch manufacturer of condensing (HR) central heating boilers and hybrid heat pumps.
• Honeywell HomecoreTechnology or IntegrationWarmgarant offers Honeywell Home smart thermostats (Honeywell Home Round, Honeywell Home Chronotherm Touch, Honeywell Home T6) as the free thermostat bundled with every CV-ketel purchase or rental. The Honeywell Home T6 smart thermostat with app control is specifically highlighted as a free bonus for Intergas CV-ketel purchases.
• CO-Certificering (CO Certification)coreOthersWarmgarant holds CO (carbon monoxide) certification as a certified installer, ensuring safe installation of gas-fired heating equipment. This certification is displayed on their website as a trust signal for customers.
• InstallQcoreOthersWarmgarant is an InstallQ-recognized installer, a Dutch quality certification scheme for installation companies. InstallQ recognition is used as a quality guarantee for installations in the Netherlands and is displayed on their website alongside the CO certification.

Scale indicators14 records

Recent moves7 records

Expansion highlights6 records

Others

• Honeywell Home (Resideo): Honeywell Home provides the smart thermostats (T6, Chronotherm) that Warmgarant bundles with every Intergas installation. As Warmgarant's bundled thermostat partner and a leading smart-home HVAC controls vendor, Honeywell is a complementary ecosystem player rather than a direct competitor.
• Intergas Verwarming: Intergas is the Dutch manufacturer whose entire product portfolio Warmgarant distributes and installs under an exclusive national partnership. Although Intergas is Warmgarant's key strategic partner and supplier rather than a customer-facing rival, its brand and product roadmap are foundational to Warmgarant's competitive identity.

Broad incumbents

• Daikin Nederland: Daikin is a global HVAC manufacturer with a strong presence in Dutch residential heat pumps. While Daikin is primarily an equipment maker and Warmgarant a specialist installer, both increasingly compete for Dutch homeowners upgrading to heat pumps, often through overlapping installer ecosystems.
• ATAG Verwarming: ATAG is a Dutch heating brand offering CV-ketels and, increasingly, hybrid heat pumps through its dealer network. It is an Intergas competitor whose products homeowners may choose instead of Warmgarant's Intergas-only portfolio, making it a relevant incumbent peer.
• Vaillant Nederland: Vaillant is a European manufacturer of boilers and heat pumps active in the Netherlands through installer partners. It overlaps with Warmgarant in product category (boilers + hybrid heat pumps) and via shared installer relationships, making it an adjacent incumbent in the same residential heating category.
• Remaha CV-ketels: Remeha is a major Dutch heating-equipment brand and a direct Intergas competitor, with its own range of condensing boilers and hybrid heat pumps sold through a dealer/installer network. Remeha competes with Warmgarant indirectly via partner installers and directly on product positioning in the Dutch residential heating market.
• Nefit Bosch Thermotechnology: Nefit (a Bosch Thermotechnology brand) supplies residential boilers and heat pumps across the Netherlands via its own installer network. It competes with Warmgarant at the product, dealer-network, and end-consumer level and represents the broader incumbent heating-equipment landscape.

Direct peers

• Energiewacht: Energiewacht is another nationwide Dutch installer that sells, installs, and services CV-ketels and hybrid heat pumps for residential customers. Its subscription-based maintenance model and national service network make it a direct competitor to Warmgarant's all-in service and rental offerings.
• Feenstra Verwarming: Feenstra is one of the largest Dutch residential HVAC service and installation companies, offering boiler installation, maintenance contracts, and heat pumps to Dutch homeowners. Both companies compete head-to-head for the same Dutch homeowner segment with bundled install + service offerings, making Feenstra Warmgarant's closest national-level direct peer.

Regional players

• Technea Group (Klimaatgroep Holland): Technea / Klimaatgroep Holland is a Dutch regional installer of sustainable heating solutions, including heat pumps, for residential customers. It overlaps with Warmgarant in residential HVAC installation but typically operates with a regional rather than national footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/Warmgarant
• Facebookfacebook.com/Warmgarant
• LinkedInlinkedin.com/company/warmgarant
• Instagraminstagram.com/warmgarant.nl
• Xx.com/warmgarant

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Warmgarant