THERMIGAZ

What THERMIGAZ does

THERMIGAZ is a family-owned HVAC, plumbing, and thermal-comfort services company headquartered in Sainte-Adresse, in the Normandy region of France. Founded in 1975, the firm has operated for 47 years and currently employs approximately 10 staff, operating at an artisanal scale. It serves three customer segments: residential homeowners (particuliers), commercial clients (professionnels), and landlords (bailleurs), drawing customers primarily through direct contact — its website (thermigaz.fr), phone (02 35 46 22 63), email ([email protected]), and word-of-mouth.

The company's service portfolio spans six lines: heating (Chauffage), plumbing (Plomberie), ventilation, water softening (Adoucisseurs), renewable energy solutions, and bathroom installation (Salles de bain). It holds a comprehensive certification stack — Qualibat RGE, QualiGaz, QualiPac, FEEBAT, and PG (Professionnel du Gaz) — and is an authorized after-sales service center for two heating brands, Saunier-Duval and Chaffoteaux. Underlying technology is industry-standard HVAC equipment sourced from these brand partners; there is no proprietary technology, software platform, or AI capability disclosed.

THERMIGAZ operates on a hybrid revenue model. Project-based installation work (new boilers, heat pumps, bathrooms) generates one-off revenue. Three tiers of recurring annual maintenance contracts — Basic, Serenity, and Comfort — produce predictable subscription-like revenue tied to the French annual boiler-inspection obligation under decree n° 2009-649. A 24/7 emergency repair service adds a transactional revenue stream outside contract windows. Customer acquisition is local and relationship-driven, with certifications and longevity acting as the primary trust signals in a regionally concentrated Normandy market.

Name

THERMIGAZ

Legal name

THERMIGAZ

Website

https://thermigaz.fr

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

1–10 employees

Short description

THERMIGAZ is a family-owned HVAC, plumbing, and thermal-comfort service company founded in 1975 and based in Sainte-Adresse, France, serving residential homeowners, commercial clients, and landlords across Normandy through installations, tiered maintenance contracts, and 24/7 emergency services.

Ownership category

akta.pro rank

Product category

HVAC and Plumbing Services

NAICS

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

SIC

Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

Hard Services (MEP/HVAC, Electrical, Plumbing) (BPABAAAA), Heat Pump Repair & Maintenance (HSAOAHAD)

Keywords

• HVAC services
• Plumbing installation
• Boiler maintenance
• Water treatment
• Building ventilation

Headquarters

HQ city

Sainte Adresse

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. HVAC Installation Services: One-time installation services for heating systems, plumbing, ventilation, bathrooms, and water softeners. Revenue generated from project-based installation work for residential and commercial clients.
2. Maintenance Contracts: Annual maintenance contracts with three tiers: 'Un entretien', 'L'entretien sérénité', and 'L'entretien confort'. These provide recurring revenue through scheduled annual visits and priority emergency service for boilers and heating systems.
3. Emergency Repair Services: 24/7 emergency repair and troubleshooting services for heating, plumbing, and related systems. Revenue generated on a per-service basis.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

THERMIGAZ provides heating (chauffage), plumbing (plomberie), ventilation, water softening (adoucisseurs), renewable energy, and bathroom installation services for residential and commercial properties. The company complements installations with tiered annual maintenance contracts and operates as an authorized after-sales service center for Saunier-Duval and Chaffoteaux brands, with 24/7 emergency intervention across the Normandy region of France.

Product overview

THERMIGAZ is a family-run heating and building equipment service company established in 1975, offering an integrated portfolio of core services including Heating (Chauffage), Plumbing (Plomberie), Ventilation, Water Softeners (Adoucisseurs), Renewable Energy (Energies renouvelables), and Bathroom Installation (Salles de bain). The company complements its installation services with three tiers of annual maintenance contracts (Basic, Serenity, and Comfort) that fulfill French legal requirements for boiler inspection, and operates an authorized after-sales service for Saunier-Duval and Chaffoteaux brands. Services are provided to residential customers (particuliers), professionals, and landlords (bailleurs) 24/7.

Differentiator

Problem solved

Functional benefit

Products and services

• Chauffage (Heating)

Quantifiable outcome

• Legal compliance with annual boiler maintenance requirements per French law (decret n° 2009-649)

Named customers3 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

Six partnerships are on record, tiered core and minor.

• Saunier-DuvalcoreOthersAuthorized Service Center for Saunier-Duval brand. THERMIGAZ provides installation, maintenance, and repair services for Saunier-Duval heating equipment. This partnership provides service certification and brand endorsement for the company's heating services.
• ChaffoteauxcoreOthersAuthorized Service Center for Chaffoteaux brand. THERMIGAZ provides installation, maintenance, and repair services for Chaffoteaux heating and hot water equipment.
• AristonminorOthersBrand partner offering heating and hot water solutions. Equipment sales and service support relationship.
• De DietrichminorOthersBrand partner for heating systems. Equipment sales and service relationship.
• AtlanticminorOthersBrand partner for heating and hot water solutions. Equipment and service support relationship.
• BWTminorOthersBrand partner for water treatment and softening solutions, including water softeners and filtration systems.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• IZI by EDF: EDF's home-services subsidiary offering heating, plumbing, electrical, and renovation work to French households. Competes for the same maintenance-contract and emergency-repair demand as THERMIGAZ, leveraging EDF's brand and customer base nationally.
• Proxiserve: Veolia-owned specialist in residential heating services, boiler maintenance contracts, and energy services in France. Closely comparable business model to THERMIGAZ's maintenance contracts, but operating nationally with substantially larger scale.
• Dalkia: EDF subsidiary focused on district heating networks, HVAC, and energy services for public and commercial clients. Competes for the commercial heating service segment that THERMIGAZ addresses through its 'professionnels' customer base.
• IDEX: French energy-services company delivering HVAC, heating networks, and building-services work to residential and commercial customers. Overlaps with THERMIGAZ's commercial service work and renewable energy offering, with broader geographic reach.
• ENGIE Home Services: National HVAC and home-services brand of the ENGIE Group, providing heating, plumbing, and electrical maintenance contracts across France. Directly competes with THERMIGAZ for residential and landlord customers, but at vastly greater scale and with a national marketing footprint.
• SPIE France: Large multi-technical services group providing HVAC, electrical, and MEP building services across France. Adjacent competitor for commercial HVAC and facilities-service contracts that THERMIGAZ also serves through its 'professionnels' segment.

Direct peers

• HomeServe France: Subscription-based home repair and emergency service for HVAC, plumbing, and electrical systems in France. The most direct comparable to THERMIGAZ's contract model, targeting the same residential customer pain points with a similar recurring-billing approach.

Emerging players

• MesDépanneurs.fr: Digital platform matching French households with local tradespeople for HVAC, plumbing, and electrical emergencies. Represents an emerging disintermediation threat to traditional local contractors like THERMIGAZ by aggregating customer demand online.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/thermigaz

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

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 THERMIGAZ