DAESUNG CELTIC ENERSYS

What DAESUNG CELTIC ENERSYS does

Daesung Celtic Enersys Co., Ltd. is a Korean manufacturer of residential heating, hot water, ventilation, and home-comfort products founded in July 1982 in Eumseong, Chungcheongbuk-do, on the basis of gas-boiler technology licensed from France's Chaffoteaux et Maury. Its portfolio centers on condensing, standard, and low-NOx gas boilers, gas and electric water heaters, clean ventilation systems, and integrated home-network products (video intercoms, door locks, lobby phones, wall pads), supplemented by lifestyle appliances including portable air conditioners, dehumidifiers, convector heaters, carbon radiant mats, and food waste disposers under the S-Line and Daesung Celtic sub-brands. Underlying technology emphasizes high thermal efficiency (92%+ on eco-friendly models) and low-NOx burner design validated by Korean (KOLAS, environmental label), Chinese (Grade 1 energy efficiency), North American (ETL, CSA, UL, ASME, NSF 372), European (CE), and Russian (GOST-R) certifications.

The company monetizes primarily through one-time hardware sales via a domestic network of approximately 300 dealers and 13 regional offices, supplemented by a Naver Smart Store e-commerce storefront, an integrated call center, and overseas distribution through wholly-owned subsidiaries in the US (VESTA.DS), China (Tianjin Daesung Renewable Energy Technology, established 2018), and Russia (DAESUNG brand, launched 2019). Pricing is dealer-driven and quote-based for installed categories (condensing boilers from approximately 2.0M KRW; ventilation from 1.1M KRW), with after-sales service monetized via service fees (20,000–24,000 KRW) and a 300+ service-network footprint. Primary customers are Korean residential homeowners, with secondary exposure to construction/real-estate developers, city-gas utilities (Seoul City Gas, Daegu City Gas), and B2B OEM export partners including Bosch Thermo Technology, A.O. Smith, and Russia's Baltic Gas. Revenue in 2023 was 1,477억 KRW (~$108M) per DART electronic disclosure, with total assets of 868억 KRW; the company is a privately held subsidiary of the Daesung Industrial (대성산업) conglomerate and reports through Korea's DART system as a non-listed entity.

Name

DAESUNG CELTIC ENERSYS

Legal name

대성쎌틱에너시스 주식회사 / Daesung Celtic Enersys Co., Ltd.

Website

https://celtic.co.kr

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

Daesung Celtic Enersys is a Korean manufacturer founded in 1982 that designs, produces, and sells gas boilers, water heaters, ventilation systems, and home-network products for residential and commercial customers, distributed through ~300 domestic dealers and subsidiaries in the US, China, and Russia.

Ownership category

akta.pro rank

Product category

Residential Heating and Hot Water Equipment

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG), Chillers & Cooling Plant Equipment (IMAHAKAE)

Keywords

• Condensing gas boilers
• Residential heating systems
• Water heaters
• Home ventilation systems
• Home network products

Headquarters

HQ city

Seoul (Guro-gu,신도림동)

HQ country

South Korea

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Boiler and HVAC Equipment Sales: Daesung Celtic generates revenue primarily through the one-time sale of hardware products including condensing gas boilers, gas water heaters, electric water heaters, air ventilation systems, home networking products (videophones, door locks, lobby phones), and lifestyle appliances. Products are sold through a nationwide network of ~300 dealers, Naver Smart Store e-commerce, and direct sales through the customer service center. Pricing is per-unit, with typical condensing gas boiler units priced from ~2,000,000 KRW and ventilation systems from ~1,100,000 KRW.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels8 records

Core offering

Daesung Celtic Enersys manufactures and sells condensing gas boilers, standard gas and oil boilers, gas and electric water heaters, clean ventilation systems, and home network products (video intercoms, door locks, lobby phones, wall pads). The company also produces lifestyle/living appliances including portable air conditioners, dehumidifiers, convector heaters, carbon mats, and food waste disposers. Products are sold under the Daesung Celtic and S-Line brands, with a primary focus on residential heating, hot water, indoor air quality, and home security solutions in Korea, with export markets in the US, China, and Russia.

Product overview

Daesung Celtic Enersys (대성쎌틱에너시스) is a Korean manufacturer of heating, hot water, ventilation, and home comfort products founded in 1982. The product portfolio centers on gas and oil boilers (condensing, standard, and low-NOx types), water heaters (gas and electric storage), home ventilation, and integrated home network systems. The S-Line brand serves as the premium sub-brand across multiple product categories. The core boiler and water heater offerings are complemented by zone control systems (각방온도시стем), temperature controllers (온도조절기, including IoT-enabled models for remote smartphone control), cascade systems for multi-unit installations, and unified piping solutions. The home network lineup covers video intercoms, door locks, lobby phones, and wall pads. Living/lifestyle appliances include air conditioners, dehumidifiers, fans, carbon radiant heating mats, food waste disposers, convector heaters, and radiators.

Differentiator

Problem solved

Functional benefit

Brands

• S-Line: 대성 S-Line product line including condensing gas boilers, water heaters, ventilation systems, and heating products
• 대성 쎌틱 (Daesung Celtic)

Products and services

• Condensing Gas Boilers High-efficiency gas condensing boilers that recover latent heat from exhaust gases for superior thermal efficiency. Includes the S-Line series (DNC+, DNC3, DNC S-Class, DNC1, DNC2, DNC_FC), European-style cylindrical DPC models, low-NOx variants, and cascade-compatible units. Achieves 92%+ thermal efficiency and Grade 1 energy efficiency ratings.
• Standard Gas Boilers Conventional gas-fired boilers for residential space heating and hot water supply. Includes low-NOx models (DiB, DNB) and spa-series variants (SSP N, SSP+).
• Oil Boilers Oil-fired boilers for residential and commercial heating. Available in stainless steel (DSO) and cast iron (DFO) constructions.
• Gas Water Heaters Gas-fired hot water generation units including condensing types (DXP-48, HW) and conventional models (DSW).
• Electric Water Heaters Electric storage water heaters including stainless steel models (DSF-JRBS, RZS, RZF, RZL/RZB), enamel storage (DSF-JF/JKF), heat-storage (DSF-JK), and Rheem (EV) and Ferroli (SG/SEV) variants.
• Clean Ventilation Systems Home ventilation systems that supply fresh outdoor air while filtering pollutants. Includes ductless models (DVC-P100/120/150, DSVS-50C/100C) and ducted models (DVD-P100M/150M/100H/150H, DVD-P150/P200/P250, YWHRV series). Priced from approximately 1,100,000 KRW.
• Home Network Systems Integrated home automation and security products including analog video intercoms (EVOD-752, DVL-733, DVL-433, EVPA-432), home-auto video intercoms (DVL-736, DVL-436, EVPD-707, EWPD-715), lobby phones (DSHL-07L1, ELP-201), door locks (DSD-P6200, DSD-H1300, DSD-M600, DSD-S200), home network wall pads (DSHW-10S1), and guard station phones (DSHG-07G1).
• Portable Air Conditioners Portable and mobile air conditioning units for residential and industrial applications including mobile units (DSA-6170G Ice I, DSA-6253G Snow I, DSA-5522G, DSA-5626G), compact industrial (DSA-5455G), and value industrial lines (DSA-5112G, DSA-5218G, DSA-5323G).
• Dehumidifiers Dehumidification appliances for residential and commercial use including CareOn II (DSD-6110B), CareOn I (DSD-6210W), year-round models (DSD-4109B, DSD-4209W), condensing 365 (DSD-5608W), commercial (DSD-5330W), and industrial units (DSD-5110B, DSD-5213B).
• Integrated Piping Systems Unified piping and distribution solutions for boiler and water heater installations. Models: DSH-30HR, 43HR, 30HD, 43HD.
• Cascade Systems Multi-boiler cascade systems enabling scalable heating capacity by connecting multiple units. Includes cascade-compatible boilers (DRB-45) and cascade water heaters (DRS-36, DRS-48, DRP-48).
• Heaters and Radiators Electric heating appliances including bathroom warm-air heaters (DSH-5215WT), mini radiators (DSH-4250K), and electric radiators (DSRA).
• Convector Heaters Electric convective heating devices for supplemental space heating. Includes safe convection heaters (DSH-5310WVM, DSH-5315WVM, DSH-5320WVM, DSH-5310WVR, DSH-5315WVR, DSH-5320WVR), standard models (DSH-4120W), and electric convectors (DSCV, DSCH).
• Carbon Mats Radiant floor heating mats using carbon fiber technology. Includes premium wool carbon mat (DSM-5116SMG, DSM-5123QMG), graphene carbon mat (DSM-5916SGR, DSM-5923QGR), and carbon topper mat (DSM-4101S, DSM-4201Q).
• Fans Portable cooling fans including folding wireless fan model (DSPF-5135W).
• Food Waste Disposers In-sink food waste disposal units. Model DSK-5150W under the Easy Clean brand.
• Air Purifier DSAP 220A Air purifier model DSAP 220A launched in 2020 as part of the living/lifestyle product line.

Quantifiable outcome

• Gas cost savings up to 28.4% compared to standard boilers through condensing technology
• +4 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability2 records

Feature4 records

Partnerships

Four partnerships are on record, tiered minor and core.

• Bosi Thermo Technology (보쉬 써모테크놀로지)minorGTM or Marketing Partner · 1 April 2024Bosch Thermo Technology and Daesung Celtic entered into a boiler export contract in 2021, with Daesung supplying condensing boilers to Bosch's international distribution channels.
• Zista Hub (주식회사 지스타 허브)minorStrategic or Co-development Partner · 1 January 2024Business agreement signed in 2022 for integrated A/S (after-sales service) for Zista Hub and room-by-room control systems. Combined service support for compatible products.
• A.O. SmithminorChannel Partner/ Reseller/ Distributor · 1 January 2015Water heater export contract signed in 2015 — A.O. Smith agreed to export 100,000 Daesung water heater units under A.O. Smith's distribution network.
• Baltic Gas (러시아)coreChannel Partner/ Reseller/ Distributor · 1 January 2014Long-term export contract with Russia's Baltic Gas for 500,000 boiler units, signed in 2014. One of Daesung Celtic's largest international distribution partnerships.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Ferroli: Italian heating manufacturer of gas boilers and water heaters — Daesung even distributes Ferroli-branded water heaters (SG/SEV models), making it both a supplier and a comparable European-style condensing-boiler competitor.
• Kiturami Boiler: Korean residential boiler and water heater manufacturer directly competing with Daesung in the Korean home heating market with comparable condensing technology and dealer-distribution models.
• Kyungdong Navien (Navien): Korean condensing boiler and water heater manufacturer — the closest direct competitor to Daesung Celtic in Korea's residential gas boiler market, with overlapping product categories, dealer networks, and energy-efficiency positioning.

Broad incumbents

• Viessmann: German family-owned heating manufacturer with global condensing boiler and heat-pump portfolio — directly comparable premium-positioning manufacturer whose CE-certified products compete with Daesung's European export ambitions.
• Ariston Group: Italian multinational producing condensing boilers, water heaters, and heat pumps — directly comparable European premium-positioned heating brand competing with Daesung in international markets with similar CE-marked product offerings.
• Baxi Group: UK/European boiler and heating manufacturer (part of BDR Thermea Group) — directly comparable European condensing-boiler competitor with similar product positioning and energy-efficiency certifications competing for premium residential installs.
• A.O. Smith Corporation: US-based global water heater and boiler manufacturer — both a commercial partner (100K-unit Daesung export contract 2015) and a comparable water heating technology competitor with broader global scale.
• Vaillant Group: European heating manufacturer (Germany/UK) producing gas condensing boilers and increasingly heat pumps — competes with Daesung in the European premium condensing segment and pursues similar energy-efficiency certifications.
• Bosch Thermotechnology: Global HVAC and heating division of Bosch, also a commercial partner of Daesung — directly comparable in condensing boiler and water heating products, with a much larger R&D, marketing, and global distribution footprint.
• Rinnai Corporation: Japanese global leader in gas appliances including condensing water heaters and boilers — competes with Daesung on premium gas-fired water heating technology and holds Korean market presence through Rinnai Korea.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCpQZZ56XgE0jEnx0uTuTSow
• Facebookfacebook.com/daesung.enersys
• Instagraminstagram.com/daesung_celtic
• LinkedInlinkedin.com/company/daesung-celtic-enersys

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 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 DAESUNG CELTIC ENERSYS