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Save Energy, Improve Kitchen Comfort, Reduce Carbon & HVAC Load

Demand Controlled Kitchen Ventilation Energy Saving System

Merlin 3000S Energy Saving System

The Merlin 3000S energy saving control system has been specifically designed for NEW and RETROFIT store applications, providing automated control over the ventilation system by adjusting exhaust and kitchen HVAC inlet air in response to the presence and level of cooking activity. Based on the temperature inside the exhaust hoods, the Merlin 3000S maximizes kitchen ventilation energy efficiency and reduces energy waste while improving kitchen comfort.


Merlin CO2 iS Detector
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Merlin CO iS Detector
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Temperature Probe
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10 Meter Temp Probe Wire
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Optical Cable

7m or 15m emitter & recieiver

View Datasheet - 15m ReceiverView Datasheet - 15m Emitter

Inputs & Outputs


(2) Temperature Probes
(2) Optical Sensors
(1) Fire Panel
(1) CO Detector
(1) CO2 Detector
(1) Emergency Stop Button


(1) Exhaust Fan
(1) Intake Fan
(2) 0-10V
(1) SPDT Relay
(1) 12VDC

Merlin 3000S Case Study

Cambridge Case Study 2023

The 2023 commercial kitchen case study restaurant, carried out in Cambridge, sought to optimize energy usage and operational efficiency within their commercial kitchen environment. In pursuit of this goal, they collaborated with us to implement the Merlin 3000S energy-saving system. The below data has been recorded over a 12 month period and at the Cambridge site, only exhaust fan demand based control was implemented.

Predicted vs. Measured Results:

Predicted Energy Saving (Annualized): 6,795 kWh
Predicted Average Load Reduction: 39.8%

Measured Energy Saving (Annualized): 6,675 kWh
Measured Average Load Reduction: 39.1%
Measured Result as Percentage of Expected: 98.2%

Financial Benefits (Exhaust Fan Only):

The implementation of the Merlin 3000S yielded significant financial benefits:
Annualized Financial Benefit: £1,909.05
Unit Rate Used for Modeling: 28.6p/kWh

For further details on this case study, please contact S&S Northern Ltd.

Product Literature

Designed & Manufactured In The UK

40+ Years Industry Experience

3 Year Product Warranty

Family Business

Express Delivery Available

Easy To Install Solutions

The UK's leading designer, manufacturer and supplier of the latest range of gas safety & control products