DRU Fires

What DRU Fires does

DRU Fires is a Dutch-founded manufacturer of gas, electric, wood and bioethanol heating appliances, with roots in a 1754 Ulft ironworks and a UK distribution subsidiary (Drugasar Ltd, Manchester) operating since 1975 and wholly owned since 2003. The company is currently a subsidiary of the German Spartherm Group and positions itself as one of Europe's largest producers of contemporary fires and gas wall heaters, holding the Hofleverancier designation as Supplier to the Royal Dutch Court. Its core technology is gas heating differentiated by three flue architectures: balanced flue (Art, Horizon, Style and Diamond series, 2-11 kW, up to 78-85% efficiency, no electrical supply required), powered flue (Kamara series, 7-16 kW, over 90% efficiency with 15-minute warm-up), and conventional flue (S-Line and Pigalle series, now discontinued but parts-supported). DRU claims to have invented the balanced flue system in the 1930s and supplies Ceramet-coated heat exchangers with extended warranties.

The business model is a hardware sales motion executed exclusively through a national network of GAS SAFE registered heating installers across UK mainland, who handle surveys, installation, warranty and servicing; pricing is not publicly disclosed and is set at the dealer level. Primary customer segments are vertical-driven and include historic and modern churches (its most established use case), independent and state schools, offices and industrial premises, military installations (including via Landmarc on MOD estates), and residential extensions and conservatories. Marketing is primarily content-led through drugasar.com and drufire.com plus organic social channels, supported by case studies and a separate technical downloads portal (druservice.co.uk) that underpins an aftermarket parts and service ecosystem. The firmographic record lists 1-10 employees, consistent with a lean UK distribution entity within the larger Spartherm group.

Name

DRU Fires

Legal name

Drugasar Ltd

Website

https://drugasar.com

Company type

Private

Founded year

1754

Operating status

Operating

Headcount range

101–250 employees

Short description

DRU Fires (Drugasar Ltd) is a UK-based subsidiary of the Dutch-German Spartherm Group, manufacturing and distributing gas wall heaters and contemporary fires for churches, schools, offices, military and residential customers via a national network of GAS SAFE registered installers.

Ownership category

akta.pro rank

Product category

Gas heating appliances

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC)

akta.pro secondary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Gas wall heaters
• Balanced flue systems
• Powered flue heaters
• Commercial heating installations
• Contemporary gas fires

Headquarters

HQ city

Twickenham

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Gas Heating Appliances Sales: DRU manufactures and supplies gas heating appliances including balanced flue heaters, powered flue heaters, and conventional flue heaters. Products are sold through a network of approved installers and dealers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

DRU manufactures and supplies gas heating appliances — gas wall heaters using balanced flue, powered flue, and conventional flue technologies — for churches, schools, offices, industrial premises and homes, alongside contemporary gas, electric, wood-burning and bioethanol fires for residential and commercial interiors. UK products are sold exclusively through a national network of GAS SAFE registered approved installers who provide surveys, installations, warranty and servicing. Heat outputs span approximately 2.4 kW to 16 kW with efficiency up to 90%+.

Product overview

DRU Fires is a manufacturer of gas heating appliances founded in the Netherlands in 1754, with UK operations through subsidiary Drugasar since 1975. The product portfolio centers on three types of gas wall heaters differentiated by flue technology: (1) Balanced flue heaters (Art, Horizon, Style, and Diamond series) using natural convection for quiet, efficient heating without electrical supply; (2) Powered flue heaters (Kamara series) with forced air convection for rapid warm-up in large spaces like churches and schools; and (3) Conventional flue heaters (S-Line and Pigalle) for buildings with existing chimneys. Heat outputs range from 2 kW to 16 kW with efficiency ratings from 73% to over 90%. All heaters run on natural gas or LPG. DRU also manufactures contemporary gas, electric, and wood fires for residential and commercial applications. The company serves diverse sectors including churches, schools, offices, industrial premises, military installations, and social housing through a national network of GAS SAFE registered installers.

Differentiator

Problem solved

Functional benefit

Brands

• Art Series: Balanced flue gas wall heaters, the most popular form of church heating in the UK since the 1950s
• Horizon Series
• Style Series
• Kamara Series
• S-Line
• Pigalle
• Diamond Series
• DRU Flue Systems

Products and services

• Art Series Balanced Flue Gas Wall Heaters Balanced flue gas wall heaters using natural convection technology developed by DRU in the 1930s. Available in 9 models with heat outputs from 2.4 to 11.1 kW, 78% efficiency, compatible with natural gas or LPG, requiring no electrical supply via battery-powered ignition. Designed for churches, schools, homes, offices and commercial premises.
• Horizon Series Balanced Flue Gas Wall Heaters Low-profile balanced flue gas wall heaters using the same natural convection technology as the Art Series but designed for installation under tall windows or in low wall spaces. Models include NL31 (3.1 kW) and NL51 (5.1 kW), both 78% efficient, with no electrical supply required.
• Style Series Balanced Flue Gas Wall Heaters Balanced flue gas wall heaters with a contemporary alu-metallic front cover design. Natural convection heating suitable for offices, studios, apartments, home extensions and conservatories. Heat outputs from 2.4 to 4.0 kW, 78% efficiency, compatible with natural gas and LPG, no electrical supply required.
• Diamond Series Balanced Flue Gas Wall Heaters Premium balanced flue heaters with additional fan assistance for faster warm-up times. Reaches maximum output in approximately 30 minutes, 85% convection/15% radiant heat distribution, with Ceramet-coated heat exchangers for extended warranty.
• Kamara Series Powered Flue Gas Wall Heaters Room-sealed powered flue gas wall heaters with fan-assisted forced air convection for rapid warm-up. Three models (K7, K12, K16) with heat outputs from 7 to 16 kW, over 90% efficiency, cool-touch casings, electronic sequence control and spark ignition, integral thermostat, suitable for churches, schools and large public buildings.
• S-Line Conventional Flue Gas Wall Heaters Conventional flue gas wall heaters connecting to existing chimney or flue pipe. Four models (S-Line 4, 6, 8, 10) with heat outputs from 4.8 to 9.4 kW, 73% efficiency, no electrical supply required, compatible with mains gas or LPG. Discontinued but spares still available.
• Pigalle Conventional Flue Gas Wall Heater Conventional flue gas wall heater with a visible flame picture, connecting to an existing chimney. Heat output 7.3 kW, 73% efficiency, available in 8 colours. Discontinued but spares still available.
• DRU Contemporary Gas Fires Contemporary gas fires for residential and commercial settings including homes, hotels, pubs, restaurants and office receptions. Part of DRU's broader gas/electric/wood-burning fire range distributed across Europe.
• DRU Electric Fires Electric fires as part of DRU's contemporary fire range for residential and commercial interiors where gas supply is unavailable or electric-only heating is preferred.
• DRU Wood Stoves / Wood-Burning Fires Wood-burning stoves/fires in DRU's contemporary fire range for residential and commercial interiors.
• DRU Bioethanol Fires Bioethanol fires as part of DRU's contemporary fire portfolio for residential and commercial interiors.
• DRU Flue Systems Complete range of flue systems for DRU gas heaters including balanced flue (two concentric tubes drawing fresh air and expelling waste gases), powered flue (fan-assisted concentric tubes), and conventional flue connections for existing chimneys. Accommodates wall thicknesses from 70 to 980 mm.

Quantifiable outcome

• Up to 90% energy efficiency
• +3 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core, major, minor and flagship.

• Calor Gas / Calor ForcecoreChannel Partner/ Reseller/ DistributorPartnership with Calor Gas for installation of DRU Art series heaters in remote locations without mains gas. Calor Force carries out installations as part of general restoration programmes, providing LPG fuel supply and installation services.
• Christopher Dunphy EcclesiasticalcoreImplementation/ SI/ Consulting PartnerSpecialist church heating contractor that specifies and installs DRU Kamara powered flue gas heaters. Provides Churchwarden Supreme control system for temperature monitoring and optimum heater start time.
• Landmarc Support ServicesmajorChannel Partner/ Reseller/ DistributorFacilities management company retained to operate civilian functions for MOD Defence Training Estate. Specified DRU heaters for MOD training establishments in Salisbury Plain, Wiltshire, to achieve 89% energy efficiency targets.
• MPH Building SystemsminorStrategic or Co-development PartnerPortable classroom manufacturer that works closely with DRU, installing gas heaters to precise specifications of building designers for temporary or portable classrooms.
• LGL HeatingminorChannel Partner/ Reseller/ DistributorApproved DRU contractor that installs DRU heating products in schools and other commercial premises.
• Martyn Bentley HeatingminorChannel Partner/ Reseller/ DistributorApproved DRU heating engineer and specialist church heating contractor based in Burntwood, Staffordshire, who installs DRU heaters.
• Spartherm GroupflagshipOthersGerman-owned parent company of DRU. DRU is now part of the Spartherm group, which is one of the largest producers of gas fires, wood stoves, gas wall heaters and electric fires in Europe.
• Martyn Bentley HeatingminorChannel Partner/ Reseller/ DistributorApproved DRU contractor that installed DRU Kamara 16 heater at RF Training facility in Birmingham.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Focal Point Fires: UK manufacturer of gas fires, electric fires and fireplace suites distributed through independent retailers and installers — directly comparable to DRU's contemporary gas fire range and go-to-market model.
• Burley Fires: UK manufacturer of gas fires and stoves sold through fireplace specialists. Comparable product offering (gas fires and heaters) and channel overlap with DRU's UK installer network.
• Be Modern Group: UK-based manufacturer of gas and electric fires, fireplaces and surrounds. Overlapping contemporary gas fire product range and UK merchant/installer distribution with DRU Fires.
• Stovax Group (Stovax / Gazco): UK-based manufacturer of gas fires, wood-burning stoves, and electric fires under the Stovax and Gazco brands. Direct competitor to DRU Fires in the UK contemporary gas fire and wall heater market with overlapping installer/dealer channels.
• Verine Fires: UK gas fire brand offering high-efficiency gas fires and balanced flue products sold via fireplace retailers. Comparable in product type (gas fires, balanced flue) and channel to DRU.
• Valor Fires: Long-established UK gas fire brand offering gas fires and heaters through a similar merchant/installer channel. Closely comparable product range and end-customer base to DRU's UK residential and commercial gas fire business.
• Crystal Fires: UK manufacturer specialising in glass-fronted gas fires and contemporary fireplace suites. Comparable to DRU's contemporary residential gas fire range and competes for the same designer/specifier customers.
• Barbas (Bellfires): Dutch manufacturer of high-end gas fires, wood stoves and fireplaces. Directly comparable European peer with similar heritage positioning and product technology to DRU's parent group operations.
• M-Design: Belgian manufacturer of contemporary gas and wood-burning fires with strong European distribution. Comparable to DRU's gas fire product range and competes in the Benelux premium fireplace market.

Emerging players

• Contura (NIBE Stoves): Swedish wood stove and gas fire brand owned by NIBE, expanding across European markets including UK. Comparable contemporary fire product range and energy-efficiency positioning to DRU, with broader group backing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/Drugasar_UK
• YouTubeyoutube.com/c/DRUFirevideos
• Facebookfacebook.com/drugasarUK
• Instagraminstagram.com/dru_fires
• LinkedInlinkedin.com/company/rugby-football-union

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 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 DRU Fires