Gastech Energi

What Gastech Energi does

Gastech-Energi A/S is a Danish privately-held heating solutions company operating under the Aktieselskab legal form, headquartered in Risskov, Denmark, and operating as part of the international Ariston Group. The company sells and services climate-friendly residential heating equipment, distributing air-to-water and ground-source heat pumps under the CTC (Nibe group) and ELCO brands, and condensing natural gas boilers under the ELCO and Geminox brands. Products include the CTC EcoAir C100 (R290 refrigerant, A+++ energy class, 35 dB noise output) and the CTC EcoPart i600 M (SCOP up to 5.50), with app-based monitoring through myUplink and ELCO Remocon-Net.

Gastech Energi distributes exclusively through a nationwide channel of specially selected and trained VVS-installatører (plumbing and heating installers) across Denmark; customers request quotes via the company website and are matched to a local installer partner based on geography and product fit. The company employs approximately 90 service technicians providing same-day or within-hours field service nationwide. Complementary revenue comes from a multi-year service agreement portfolio, with the Total Tryghed agreement covering inspections, free calls, the Grøn Indstilling optimization service, and free spare parts for up to 15 years on CTC heat pumps and 10 years on ELCO heat pumps.

The company serves primarily Danish private homeowners replacing aging oil or gas furnaces, with a secondary commercial (erhverv) segment. Pricing starts at 70,000 DKK for air-to-water heat pumps and 90,000 DKK for ground-source heat pumps. Gastech Energi claims approximately 70,000 service customers and 90,000+ total customers, with Trustpilot and Google ratings of 4.6 and 4.8 respectively. CSR activity includes tree-planting partnerships with Plant et Træ and Growing Trees, totaling 16,051 trees as of April 7, 2026.

Name

Gastech Energi

Legal name

Gastech-Energi A/S

Website

https://gastech.dk

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

101–250 employees

Short description

Gastech-Energi A/S is a Danish private heating solutions company that distributes and services CTC and ELCO brand heat pumps and gas boilers nationwide through a trained installer network and 90 service technicians, serving primarily residential homeowners.

Ownership category

akta.pro rank

Product category

Residential Heating Solutions

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers (423720)

SIC

Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070), Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

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

akta.pro secondary industries

Heat Pump Repair & Maintenance (HSAOAHAD), Heat Pump & Smart HVAC Controller Integration (HSAOANAD)

Keywords

• Residential heating solutions
• Heat pump installation
• Gas boiler service
• Climate-friendly heating
• Heat pump maintenance

Headquarters

HQ city

Risskov

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Heat pump and gas furnace product sales: Gastech Energi sells new heat pumps (air-to-water and ground-source) and condensing gas furnaces through a network of VVS installer partners across Denmark. Products are priced from 70,000 DKK for air-to-water heat pumps and from 90,000 DKK for ground-source heat pumps.
2. Service agreements (serviceaftaler): Annual and multi-year service agreements for heat pumps and gas furnaces covering inspections, maintenance, free service calls, and in the case of Total Tryghed, spare parts. These provide recurring revenue from the existing customer base of ~70,000 service customers.
3. Spare parts and consumables: Replacement parts, coolant refills, and accessories sold during service visits. Total Tryghed agreement includes free spare parts; other customers pay per incident.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Gastech-Energi distributes, installs and services climate-friendly residential heating solutions for Danish homeowners, including air-to-water heat pumps, ground-source heat pumps and condensing natural gas boilers from ELCO and CTC brands. Products are sold exclusively through a nationwide network of specially trained VVS installer partners, with multi-year service agreements (up to 15 years) providing recurring maintenance, inspections and spare parts coverage on the installed base of approximately 70,000 service customers.

Product overview

Gastech-Energi is a Danish heating solutions company offering a comprehensive portfolio of heating products and services for residential properties in Denmark. The core product portfolio consists of three main categories: (1) Luft til vand-varmepumper (air-to-water heat pumps) under ELCO and CTC brands, (2) Jordvarmepumper (ground-source heat pumps) under the CTC brand, and (3) Gasfyr (gas boilers) under ELCO and Geminox brands. These products are complemented by indoor units and control systems including CTC EcoZenith i255, CTC EcoZenith i360, and CTC EcoLogic M/L. The company also provides service agreements including Total Tryghed packages, energy savings calculators, and operates a nationwide network of VVS-installatør (plumbing-heating contractors) partners. The CTC EcoAir C100 represents their newest air-to-water heat pump series, while the CTC EcoPart series covers ground-source solutions ranging from compact basement units (EcoPart 400) to premium modulating models (EcoPart i600 M). ELCO products provide additional air-to-water options for different budget and performance requirements.

Differentiator

Problem solved

Functional benefit

Products and services

• Air-to-Water Heat Pumps (Luft til vand-varmepumper) Heat pumps that extract energy from outdoor air and transfer it to heating water for radiators, underfloor heating, or domestic hot water. Available from ELCO and CTC brands and distributed through Gastech-Energi's VVS installer network for Danish residential customers. Starting price from 70,000 DKK.
• Ground-Source Heat Pumps (Jordvarmepumper) Heat pumps that extract energy from the ground through brine-filled pipes buried in the earth, offering higher efficiency than air-source pumps. Available from CTC brand (including EcoPart 400, EcoPart 600 M, EcoPart i600 M, EcoHeat 400, GS 600 and GSi 600 series). Starting price from 90,000 DKK.
• Gas Boilers (Gasfyr) Condensing natural gas boilers for residential heating and domestic hot water, available from ELCO and Geminox brands. Distributed through the VVS installer network and accompanied by Total Tryghed service agreements for warranty preservation.
• Service Agreements (Serviceaftaler) Multi-year service and maintenance agreements for gas boilers and heat pumps, including the Total Tryghed package with spare parts included and the lighter Tryghed package without spare parts. Initial 2-year commitment with automatic annual renewal; extendable up to 15 years for CTC heat pumps and 10 years for ELCO heat pumps.
• Hybrid Solution (Hybridløsning) Combined system of a heat pump and a gas boiler installed together for residential customers, providing optimal efficiency and flexibility by automatically switching between the two technologies based on conditions and demand.

Quantifiable outcome

• Up to 65% savings on heating bills when switching from oil or gas furnace to heat pump
• +4 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

Feature6 records

Partnerships

Five partnerships are on record, tiered minor and core.

• Plant et TræminorOthersGastech-Energi partners with Plant et Træ (plant-et-trae.dk) as part of its CSR and environmental strategy. For every service agreement, new heat pump, or new gas furnace purchased, Gastech-Energi supports the planting of trees. As of April 7, 2026, this partnership has resulted in 3,701 trees planted.
• Growing TreesminorOthersGastech-Energi partners with Growing Trees (growingtrees.dk) as part of its CSR and environmental strategy. For every service agreement, new heat pump, or new gas furnace purchased, Gastech-Energi supports the planting of trees. As of April 7, 2026, this partnership has resulted in 12,350 trees planted.
• ELCOcoreTechnology or IntegrationGastech-Energi sells ELCO-brand gas furnaces and heat pumps. ELCO is described as offering high technology, efficiency, and quality products always offered with guarantee and 10-15 year service agreements.
• CTC (part of the Nibe group)coreTechnology or IntegrationGastech-Energi sells CTC-brand heat pumps. CTC is a Swedish quality brand known for Swedish design and engineering since 1923, offering products including the EcoAir C100, EcoAir 700M, EcoZenith indoor units, EcoLogic controls, EcoHeat, GS, GSi, and EcoPart ground-source heat pump series.
• Ariston GroupcoreTechnology or IntegrationGastech-Energi is part of the Ariston Group (Aristongruppen), an international group operating in the heating and hot water sector.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Market position

Strengths1 record

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/GastechEnergi
• Facebookfacebook.com/Gastech.Energi
• LinkedInlinkedin.com/company/gastech-energi-as

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Gastech Energi