Building services from Cologne: heating construction, plumbing and renewable energies for private, commercial and public clients.

Hefter & Zahn Haustechnik Service GmbH

Gartenstraße 16, 51149 KölnNew on Amplifa

over 30 yearsIn the market in Cologne and the surrounding area

2nd generationFamily business, owner-managed

HRB 57264Cologne Local Court

About Hefter & Zahn

Hefter & Zahn Haustechnik Service GmbH is an owner-managed trades business from Cologne that has been active in the field of bathrooms, heating and renewable energies for over 30 years. The second-generation family business plans and installs heating systems for new and existing buildings – from heat pumps to gas and oil heating systems to solar thermal and pellet heating systems as well as log wood boilers. Further services include heating modernisation, maintenance and servicing, hydraulic balancing, gas line renovation and complete bathroom renovation including 3D planning. Customers are private individuals, commercial and public clients in the Cologne, Bonn and Rhein-Sieg region. Reference projects include air-to-water heat pumps outdoors, hybrid systems in multi-party buildings and fresh water stations. An emergency service is available in emergencies; in the event of heating failures, mobile electric heating units are provided.

Site: Köln
Processes: Heating planning and installation, Heating modernisation, Heating maintenance and servicing, Hydraulic balancing, Gas line renovation, Heat pumps, Solar thermal, Pellet heating systems
Materials: Heat pumps (air-to-water, domestic hot water), Solar thermal, Pellet heating systems, Gas and oil heating systems, Log wood and split log heating systems
Industries: Private customers, Commercial, Public clients, Building services, Plumbing, Heating construction

01
Consultation and needs analysis
02
Planning (including 3D planning for bathrooms)
03
Installation and execution
04
Maintenance and servicing
05
Emergency service

Services & Technologies

Heat pumps (air-to-water, domestic hot water)

Efficient heating solutions at low flow temperatures, also in combination with underfloor heating.

Solar thermal

Solar heat to reduce energy costs and emissions.

Pellet heating systems

Biomass heating systems as an alternative to fossil systems.

GAS

Gas and oil heating systems

Replacement of existing systems or transitional solution as part of planned modernisations.

HOLZ

Log wood and split log heating systems

For special requirements with higher operating effort.

Location

Cologne

Headquarters and workshop

Projects & Systems

**Air-to-water heat pump outdoors**Installation · Residential building

**Heat pump system between two buildings**Installation · Apartment building

**Domestic hot water heat pump with hot water tank**Indoor technology · Residential building

**Boiler room with gas boiler and pipework**Indoor technology · Existing building

**Single-family house with solar system**Project · Private customer

Inside the production

Outdoor air conditioning unit on a slope in winter

Pipe with pressure gauge in building services

Industries

Private customersCommercialPublic clientsBuilding servicesPlumbingHeating constructionRenewable energies

Additional services

Heating planning and installationHeating modernisationHeating maintenance and servicingHydraulic balancingGas line renovationHeat pumpsSolar thermalPellet heating systemsGas and oil heating systemsLog wood and split log heating systemsBathroom renovation and bathroom design3D planningEmergency serviceMaintenance contractsmobile electric heating units in case of heating failure

Company History

Takeover and continuation of the family business by the second generation; active in Cologne and the surrounding area for over 30 years.