ARDENT Commercial Electric Boiler
The ARDENT commercial electric boiler range, encompassing wall-hung and floor-standing variants with heat outputs from 9 to 100 kW, provides an easy-to-integrate, high capacity, reliable, and compact response for electric hot water and central heating demands in commercial buildings.
ARDENT is designed to serve as an indirect water heater or heating system. Multiple electric heating elements immersed into ARDENT’s integrated water storage tank provide a rapid and reliable source of thermal energy for those seeking to avoid a reliance on gas energy supplies.
Features & Key Technologies
- 9-36 kW heat output wall-hung
- 60-100 kW heat output floor-standing
- Simple integration into existing system
- Built-in redundancy
- Avoid reliance on gas energy supplies
- Ideal for all electric-only and hybrid hot water systems
Options
ARDENT S36 | P9 | P12 |P24
The compact wall-hung ARDENT commercial electric boiler is available in two ranges:
ARDENT Standard
The ARDENT Standard 24 kW and 36 kW models features three heating elements with thermostat input and output control to an external pump.
ARDENT Premium
The ARDENT Plus 9 kW, 12 kW and 24 kW models feature two or three heating elements with six or nine circuits controlled by the front-mounted controller with LCD display.
ARDENT S60 | S80 | S100
For larger-scale applications, the ARDENT commercial electric boiler is also available as a floor-standing appliance with 60 kW, 80 kW and 100 kW heat outputs.
Stepped element control is included, as well as an automatic air relief valve, safety valve, and temperature and pressure sensors. The integral controller boasts an LCD display and fault output.
Floor-standing ARDENT appliances offer rear flanged pipework connections and boast a protective IP20-rated outer shell.
Additional Information
ARDENT perfectly integrates with a heat pump to provide an additional high-temperature energy source for water heating during the coldest months.
Or, as part of an indirect hot water system, can help eliminate scale build-up common on direct electrical immersion heaters.
Download the ARDENT Range brochure
The Adveco ARDENT brochure provides you with a quick and easy reference guide to this range of compact and highly efficient, wall-mounted and floor-standing electric boilers.
What is a commercial electric boiler?
A commercial electric boiler heats water using electric elements rather than burning gas, either directly for space heating or, in ARDENT’s case, as an indirect water heater with elements immersed in an integrated storage tank. It’s specified where a building wants to reduce or remove its reliance on a gas supply, whether for a fully electric system or as a secondary source alongside a heat pump.
What is a commercial electric boiler?
Buildings moving away from gas often assume the choice is binary: keep gas, or commit to a full heat pump replacement with all the disruption that implies. ARDENT offers a third path, a genuinely simple, high-capacity electric alternative that integrates into an existing system without the complexity of a heat pump installation, or sits alongside a heat pump as the high-temperature top-up it needs during the coldest months when heat pump efficiency drops.
Commercial electric boiler vs gas: what actually changes?
Moving from gas to electric changes more than the fuel source. Electric boilers like ARDENT have no flue requirement, which simplifies installation and removes a common site constraint. There’s no combustion, so no CO or NOx emissions on site, and no gas safety inspection regime to maintain. Running costs depend heavily on your electricity tariff versus gas price, which is why ARDENT is commonly specified either as part of a fully electric strategy where the economics already favour it, or as a hybrid top-up alongside a heat pump, where it only runs during the coldest periods rather than carrying the full heating load year-round.
Technical Specifications & Downloads
Literature
Adveco ARDENT 9-36 kW Data Sheet
Adveco ARDENT 60-100 kW Data Sheet
Adveco ARDENT Electric Boiler Range brochure
Adveco Technology Supplement – Electric Boiler Versus Immersion Water Heating
Limescale Protection In Electric Domestic Hot Water- Adveco Handbook
Adveco ARDENT S24-S36 Installation, Operation, and Maintenance Manual
Adveco ARDENT P9-P12-P24 Installation, Operation, and Maintenance Manual
Adveco ARDENT S60-S100 Installation, Operation, and Maintenance Manual
Adveco ARDENT P9-P24 Electric Boiler Engineering Specification
Adveco ARDENT S24-S36 Electric Boiler Engineering Specification
Adveco ARDENT S60-S100 Electric Boiler Engineering Specification
Specifications
Model | S24 | S36 | P9 | P12 | P24 | S60 | S80 | S100 |
Power output range at nominal resistance | 400V: 24.0 kW | 400V: 36.0 kW | At 240V 1ph / 400V 3ph: 9.0 kW | 400V:12.0 kW | 400V: 24. kW 440v: 29.4 kW | 400V: 10.0–60.0 kW | 400V: 10.0–80.0 kW | 400V: 10.0–100.0 kW |
Element Configuration | 3 x 8.0 | 3 x 12.0 | 6 x 1.5 | 6 x 2.0 | 9 x 2.7 | 10 x 6.0 | 10 x 8.0 | 10 x 10.0 |
Element nominal resistance | 19.8Ω ±10% | 22.0Ω ±10% | 35.3Ω ±10% | 26.5Ω ±10% | 19.6Ω ±10% | 15.9Ω ±10% | 15.9Ω ±10% | 15.9Ω ±10% |
Heating Element Efficiency | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
Power Supply (Vac / Phases / Hz) | 400 / 3 phase / 50 | 400 / 3 phase / 50 | 240 / 1 phase / 50 | 400 / 3 phase / 50 | 400 / 3 phase / 50 | 400 / 3 phase / 50 | 400 / 3 phase / 50 | 400 / 3 phase / 50 |
| Full load current per phase (A) at nominal resistance | 400V: 34.8 A 440V: 38.3 A | 400V: 52.2 A 440V: 57.4 A | 240V 1ph: 39.1 A 440V 3ph: 14.3 A | 400V: 17.4 A 440V: 19.1 A | 400V: 35.2 A 440V: 38.7 A | 400V: 87.0 A 440V: 95.7 A | 400V: 115.9 A 440V: 127.5 A | 400V: 144.9 A 440V: 159.4 A |
Inlet & Outlet Connections | 1″ (DN 25mm) | 1″ (DN 25mm) | G 3/4″ | G 3/4″ | G 3/4″ | PN16 (DN50mm) | DN50mm PN16 | DN50mm PN16 |
Boiler Water Volume (L) | 14.2 | 21 | 12.5 | 12.5 | 12.5 | 95 | 95 | 95 |
Maximum Operating Temperature (°C) | 80 | 80 | 80 | 80 | 80 | 90 | 90 | 90 |
Operating Pressure Range (Bar) | 0.5-3.0 | 0.5-3.0 | 0.8 – 2.2 | 0.8-2.2 | 0.8-2.2 | 0.4-3.6 | 0.4-3.6 | 0.4-3.6 |
Energy Efficiency Class | D | D | D | D | D | D | D | D |
Dimensions H x W x D (mm) | 600x450x162 | 600x450x215 | 700x430x230 | 700x430x230 | 700x430x230 | 1240x500x900 | 1240x500x900 | 1240x500x900 |
Dry mass (kg) | 13.5 | 17.2 | 25 | 25 | 25 | 92 | 106 | 120 |
Certification and Ecodesign
Case Studies
University of Bath – Scala student accommodation
Fast Food Restaurant – Click to watch.
Limescale Protection In Electric DHW Systems
Read our handbook on how ARDENT can be employed to reduce damaging limescale formation in hard water areas when moving to commercial-grade all-electric water heating.
Contact Us
Frequently Asked Questions
Why Choose Adveco
50 Years
Adveco Ltd. is the independent hot water specialist for the commercial built environment and has historically traded as A.O. Smith Water Heaters in the UK.
Highest quality products and services
We prioritise our clients’ needs to deliver bespoke, practical systems.
Full aftersales support
Maintenance and service packages, commissioning, spares, warranty and technical support for your application.