What Calefactio OÜ does

Calefactio OÜ is an Estonian private limited company (osaühing) that provides installation, maintenance, and cleaning services for residential water and heating systems. Its service portfolio covers underfloor heating cleaning, radiator flushing, heat exchanger cleaning, potable water disinfection, underfloor heating installation, boiler room maintenance, and general plumbing work, addressing both water-quality hygiene and thermal-system upkeep in domestic properties.

The company carries out its work using professional-grade equipment from established manufacturers, specifically REMS (CleanH, NoCor, Peroxi Color product lines) and ROTHENBERGER (ROCAL Acid Multi). These are commercially available trade tools rather than proprietary technology, indicating a standardized service delivery model. No software platform, proprietary process, or differentiated technical asset is described in the source material.

The business operates a direct-to-consumer go-to-market with quote-based pricing, generating revenue per service engagement rather than through subscriptions or maintenance contracts. Customer contact is handled through a single Estonian phone number (+372 5569 7807), a generic email ([email protected]), and a website at calefactio.ee. No headcount, revenue, funding history, geographic footprint beyond Estonia, or ownership structure is disclosed in the available data.

Name

Calefactio OÜ

Legal name

Calefactio OÜ

Website

https://calefactio.ee

Company type

Private

Operating status

Operating

Short description

Calefactio OÜ is an Estonian private limited company that provides installation, maintenance, cleaning, and disinfection services for residential water and heating systems, serving homeowners on a quote-based, direct-to-consumer basis.

Ownership category

akta.pro rank

Product category

HVAC Maintenance and Plumbing Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (23822), Water, Sewage and Other Systems (2213)

SIC

Sanitary Services (4950), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

System Cleaning, Flushing & Commissioning (Pre-commission/Refurb) (BPABAJAG)

akta.pro secondary industries

Water Heater & Boiler Descaling/Flushing & Water Quality Treatment (HSAOACAH), Chillers, Boilers & Central Plant Operations (BPABACAG), Sewer Line Cleaning & Root Removal (HSAOABAC)

Keywords

• Heating system maintenance
• Plumbing installation services
• Underfloor heating cleaning
• Boiler room maintenance
• Water pipe disinfection

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Installation Services: One-time installation of underfloor heating systems (wet and dry installation methods) and boiler room reconstruction services for residential and commercial properties.
2. Maintenance and Repair Services: Regular maintenance services for heating systems, boiler rooms, and plumbing. Includes cleaning, filter maintenance, inspection of blowers, expansion tanks, pumps, and valves. Also includes repair work and proposals for system improvements.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Calefactio OÜ provides installation, maintenance, and cleaning services for water, heating, and plumbing systems in Estonia. Its core services include chemical cleaning of underfloor heating systems using REMS CleanH and REMS NoCor water softener, hydrodynamic flushing of radiators, chemical cleaning of ground and district heating heat exchangers using ROTHENBERGER ROCAL Acid Multi, disinfection of potable water pipelines compliant with EN 806-4, underfloor heating installation (wet and dry methods), and boiler room reconstruction and maintenance.

Product overview

Calefactio OÜ is a service-based company providing water and heating system installation, maintenance, and repair. The portfolio consists of a single service offering with multiple specialized sub-services: underfloor heating chemical cleaning and maintenance (using REMS CleanH and REMS NoCor water softener), radiator flushing, ground and district heating heat exchanger chemical cleaning (using ROTHENBERGER ROCAL Acid Multi), potable water pipe disinfection with flushing (using Rems Peroxi Color compliant with EN 806-4), underfloor heating installation, boiler room reconstruction and maintenance, and general plumbing work. These services are offered as standalone service packages rather than a unified software platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Underfloor Heating Chemical Cleaning and Maintenance (Põrandakütte keemiline pesu ja hooldus) Professional chemical cleaning of sediments in underfloor heating systems using REMS CleanH, combined with REMS NoCor water softener to create a protective layer on pipe inner surfaces and prevent future limescale buildup. Targets residential and commercial property owners experiencing uneven heating, clogged underfloor circuits, or rising energy costs.
• Radiator Flushing (Radiaatorite läbipesu) Hydrodynamic flushing of individual heating circuits in central heating systems to remove deposits that impair water flow, optimizing system performance and longevity. For property owners facing reduced radiator performance due to sediment accumulation.
• Ground and District Heating Heat Exchanger Chemical Cleaning (Maa- ja kaugküttesoojusvahetite keemiline pesu) Chemical cleaning of ground and district heating heat exchangers using ROTHENBERGER ROCAL Acid Multi to remove limescale buildup and ensure maximum heat transfer efficiency. For properties served by district heating systems experiencing pressure drops or declining heat transfer.
• Potable Water Pipe Disinfection with Pipe Flushing (Tarbeveetorustiku desinfitseerimine koos torustiku läbipesuga) Disinfection of potable water piping systems combined with flushing using Rems Peroxi Color (compliant with European standard EN 806-4) to eliminate water bacteria, viruses, and microorganisms and create protective layers. For property owners concerned about water quality and health risks.
• Underfloor Heating Installation (Põrandakütte paigaldus) Installation of underfloor heating systems using classic wet installation or dry installation with polystyrene plates, employing plastic clip fasteners instead of binding wire. For new construction or renovation projects requiring underfloor heating.
• Boiler Room Reconstruction and Maintenance (Katlamajade rekonstrueerimine ja hooldus) Regular maintenance and reconstruction of boiler rooms including cleaning of mud filters, inspection of blowers, expansion tanks, pumps, and valves, and recommendations for system improvements. For property owners seeking to extend equipment lifespan and prevent unexpected heating interruptions.
• Other Plumbing Work (Muud santehnilised tööd) Additional plumbing services beyond heating systems, available on request.

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• REMScoreTechnology or IntegrationREMS is a manufacturer of professional tools for pipe work and system maintenance. Calefactio uses REMS CleanH for chemical cleaning and conservation of underfloor heating systems, and REMS NoCor water softener to create protective layers on pipe inner surfaces and prevent future limescale formation.
• ROTHENBERGERcoreTechnology or IntegrationROTHENBERGER is a manufacturer of professional tools for plumbing and heating work. Calefactio uses ROTHENBERGER ROCAL Acid Multi for chemical cleaning of ground and district heating heat exchangers to remove limescale buildup and maintain optimal heat transfer efficiency.

Broad incumbents

• Wilo: German global manufacturer of pumps and pumping systems for heating, cooling, and water supply. Adjacent to Calefactio's boiler room and water-system maintenance work through the pumps and circulation equipment it services.
• Viessmann: German global manufacturer of heating, industrial and refrigeration systems, including boiler-room solutions. Comparable to Calefactio's boiler room reconstruction and maintenance service, though operating at vastly larger scale.
• Uponor: Nordic-origin global manufacturer of plumbing and heating solutions, including underfloor heating systems. Overlaps with Calefactio's underfloor heating installation and water-system service work, though operating as a much larger equipment-and-systems incumbent.
• Caleffi: Italian global manufacturer of components and solutions for heating, plumbing, and air-conditioning systems. Comparable to Calefactio in serving the hydronic heating and water-system maintenance ecosystem, though as a much larger component supplier.

Direct peers

• Adey: UK-based specialist in water treatment and magnetic filtration for heating systems. Closely comparable to Calefactio's chemical cleaning, water-softening, and system-protection offerings for residential heating circuits.
• Fernox: UK-based manufacturer of chemical water treatments for central heating systems, including cleaners, inhibitors, and filters. Comparable to Calefactio's chemical cleaning and limescale-prevention service value proposition.
• Hometree: UK subscription-based home heating and plumbing service provider, offering boiler/heating maintenance and repair plans. Comparable to Calefactio as a heating-system maintenance service business targeting residential property owners.
• BOXT: UK-based boiler installation and heating services company with a digital-direct model. Comparable to Calefactio in delivering heating-system installation and maintenance services directly to end customers.
• Warmup: UK-based global provider of underfloor heating solutions, including system installation and associated maintenance accessories. Comparable to Calefactio in offering underfloor heating installation services as a core revenue stream.

Others

• ROTHENBERGER: Global manufacturer of professional tools for plumbing and HVAC work, and a stated Calefactio partner. Related as a key supplier of the chemicals and equipment Calefactio relies on, rather than a direct service competitor.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat2 records

Key risks5 records

Key highlights6 records

Customer concentration

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 Calefactio OÜ