AD Commercial Water Heater
The Adveco AD commercial water heater range sets a new benchmark for commercial modulating condensing gas water heaters. Sleekly designed with a patented compact floor-standing arrangement, the AD is equally applicable to both new projects or renovation work where a lack of space would traditionally stall or quickly drive up costs of a project.
The Adveco AD range is also compatible with proposed 20% hydrogen blends in natural gas networks offering a transitional route to a more decarbonised energy without requiring physical alteration to the appliance or building.
Floor-Standing Water Heater Design: Features & Key Technologies
- High efficiency pre-mix burner
- Low CO emissions 19 ppm (Class 6)
- Low NOₓ emissions at 27mg/kWh
- 20% hydrogen blend compatible
- Built-in redundancy (AD 140T, 210T, and 280T)
- Ideal for high capacity instantaneous DHW systems
Options
With each water heater composed of one to four 70kW heat exchangers, the AD range offers appliances from 70kW up to 280kW which can be configured to operate in a cascade of up to eight water heaters.
The titanium-stabilised stainless-steel construction of the AD range’s heat exchangers is the perfect response to counter corrosion typically seen in high-pressure circuits in soft, or softened water applications.
This makes the Adveco AD a powerful choice for the most demanding semi-instantaneous hot water applications such as those found in sports and leisure centres, hotels, spas, schools, stadia, and large commercial buildings.
The AD regulates the correct water flow in accordance with inlet water hardness. Controlling the speed of the inlet water inside the heat exchanger allows the AD to automatically optimise the supplied output (up to 160 litres/minute) from the heat exchangers ensuring maximum efficiency when providing hot water.
Models with multiple integrated heat exchangers offer load balancing for optimal long-life operation and inbuilt redundancy guaranteeing continuity of service. Their titanium-stabilised stainless-steel construction makes the heat exchangers highly resilient; this enables direct contact with chlorinated mains water and use in naturally soft water areas where the corrosive nature of mains water can rapidly damage other water heaters.
Tough and efficient, the AD commercial water heater is equipped with a premix burner made of Fecralloy metal fibre for a high modulation ratio for excellent functionality at extremely high temperatures whilst also offering maximum efficiency even during periods of low demand. Using a pre-mix burner ensures the AD requires less gas, making it more cost-effective, plus reducing harmful NOₓ and CO emissions making the AD range a more eco-friendly choice.
The Adveco AD commercial water heater range features an inbuilt controller with LCD display that ensures full temperature control, plus cascade control for up to 8 units and a maintenance self-check of primary components and functions, 0-10 input, MODBUS communication and alarm output for seamless system integration.
Product brochure
What is a commercial instantaneous water heater?
An instantaneous water heater heats water on demand as it flows through the unit, rather than storing a volume of hot water ready to use. AD is Adveco’s pure instantaneous range: no integrated storage tank, built for continuous, high-volume demand where fast, sustained recovery matters more than a buffer of stored hot water.
The problem AD solves
Large commercial buildings with continuous, high-volume hot water demand, leisure centres, hotels, stadia, run into a specific problem with stored-volume systems: once the stored hot water runs out during a genuine peak, recovery time becomes the bottleneck. AD sidesteps that entirely by heating water as it’s drawn, in cascade if needed, so output scales with demand rather than being capped by tank size.
AD vs Astute vs ADplus: positioning the AD range
AD, Astute and ADplus are all commercial gas water heaters, but each fits a different brief. AD is the pure instantaneous option: no storage, floor-standing, 70-280 kW in cascade, built for the highest continuous demand with no buffer capacity needed. Astute is built specifically for retrofit, with universal connections and flueing options plus smart monitoring, a strong fit when replacing an existing unit with minimal disruption. ADplus sits between the two, the same instantaneous platform as AD but with a 120-litre integrated storage tank, useful where a small buffer smooths out short demand spikes. If your building needs the highest sustained output with no storage overhead, AD is the straightforward choice.
Technical Specifications & Downloads
Literature
Adveco AD Water Heaters Product Brochure
Specifications
Model | AD 70T | AD 140T | AD 210T | AD 280T |
Gross Heat Input (min/max) kW | 16.3 / 77.6 | 16.3 / 155.4 | 16.3 / 233.1 | 16.3 / 310.8 |
Heat Output (min/max) kW | 15.6 / 74.0 | 15.6 / 148.0 | 15.6 /222.0 | 15.6 / 296.0 |
DHW Recovery (ΔT 50°C) l/h | 1202 | 2506 | 3755 | 5088 |
Dimensions H x W x D | 1180 x 600 x 945 | 1180 x 600 x 945 | 1880 x 600 x 896 | 1880 x 600 x 896 |
NOX mg/kWh GCV | 27 | 27 | 27 | 27 |
CO ppm | 19 | 19 | 19 | 19 |
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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.