1 Table of contents 26

Hotel Climate Control Solutions

Binder1.pdf		1
Guide Front Pages.pdf		1
HOTELS		1
Hotel Climate Solutions DPS.pdf		2-3
CLIMATE SOLUTIONS FOR HOTELS		2-3
In the hotel sector, comfort is the product. The temperature of the bedroom, the welcome at the entrance, the ambience in the dining room – every element of a guest's stay is shaped by the building's climate. And every uncomfortable moment risks a poor review, a lost booking and an unavailable room.		2-3
Biddle has many years of experience delivering quiet, energy-efficient and highly reliable climate solutions for hotels of every kind – from heritage landmarks to contemporary boutique properties. Our project-focused approach and flexible product range means we can create a tailor-made solution for any hotel, whatever its age, size or stylistic ambition.		2-3
CUSTOM CLIMATE CONTROL – DESIGNED AROUND GUESTS		2-3
No two hotels are alike. From the entrance to the guest room, the meeting suite to the restaurant, every space has its own climate demands. Drawing on our industry-leading range of air curtains, fan coil units, ceiling cassettes and heat recovery systems, we design a custom climate system to suit each hotel's unique architecture, operational rhythm and brand standards.		2-3
QUIET COMFORT		2-3
Nothing disturbs a guest's stay quite like noisy heating. Biddle's products are engineered to deliver maximum thermal performance at minimum noise, with units like the DecoQT achieving as little as NR23 (28.9dBA) at the bedside, ensuring a genuinely undisturbed sleep expected by hotel patrons.		2-3
HOSPITALITY FOCUS		2-3
Hotel climate systems must do more than perform, they must also disappear. Biddle's products are designed to integrate seamlessly into hotel interiors, with custom paint finishes, discreet grille designs and aesthetic configurations that complement contemporary and heritage settings alike. From the sleek STYLE2 air curtain to the unobtrusive DecoQT fan coil unit, every element is engineered to be felt, not seen.		2-3
CASE STUDY		4-5
THE REMBRANDT HOTEL, KNIGHTSBRIDGE		4-5
The Rembrandt Hotel, located in the prestigious Knightsbridge area, stands out for its historical allure and architectural ingenuity. Constructed in 1911 and originally envisioned as opulent apartments for Harrods, the landmark building now thrives under the Sarova Hotel Group, preserving its Edwardian sophistication. When the time came to rejuvenate the hotel's bedrooms, the brief was demanding: deliver precise temperature control in each room using the existing HVAC infrastructure, achieve a noise level of NR26 – and do it all without disturbing the experience of paying guests. Following collaboration with the hotel's design team, Biddle's DecoQT fan coil unit was specified for the project.		4-5
SOLUTION		4-5
The DecoQT 70 was selected for its rare combination of acoustic and aesthetic performance. Its five-row dual purpose coil delivers the required chilled water cooling and low-pressure hot water heating, while its single, elegantly designed grille blends seamlessly into the rooms' Edwardian interiors – preventing direct visibility into the unit and preserving the visual quality of every bedroom.		4-5
Rigorous on-site assessment confirmed the unit achieving as low as NR23 (28.9dBA) at the bedside during the evening. Touchscreen wall controllers, styled to complement the hotel's décor, give guests intuitive temperature control at their fingertips.		4-5
CONCLUSION		4-5
The DecoQT delivered acoustic performance below specification, seamless aesthetic integration and rapid room turnover: proof that heritage and modern comfort can coexist beautifully.		4-5
AIR CURTAIN SOLUTIONS		4-5
A hotel entrance is the first impression. Guests arrive and depart at all hours, often with luggage, often with the door held open. Every opening allows for conditioned air to escape and for draughts to spoil the welcome. Biddle's air curtains create an invisible barrier that maintains lobby comfort and lets the door stay open without the cost.		4-5
BENEFITS		4-5
VARIANTS		4-5
Suitable for door heights up to 4m		4-5
Designed to maintain occupancy comfort without impacting on energy use, Biddle’s range of comfort air curtains are the perfect solution to create welcoming entrances.		4-5
The STYLE2 and SR air curtains deliver exceptional performance and prevent thermal exchange across a threshold through all seasons.		4-5
The DoorFlow2 offers a minimalist, filter-free solution with models specific to revolving doors.		4-5
Reduces energy consumption and heating costs		4-5
Control flexibility – manual, automatic, BMS integration		4-5
Choice of RAL colours to match interior aesthetics		4-5
AIR CURTAIN TECHNOLOGY		6-7
i-SENSE		6-7
The patented i-sense infrared technology carefully scans the environment around the doorway collecting information on indoor and outdoor temperatures by measuring the exact temperature at floor level. In addition, the i-sense detects when the door is closed.		6-7
The i-sense (1) collects temperatures from several points both from inside and outside the doorway (2&3), whilst a sensor in the return air measures room temperature (4).		6-7
EXAMPLE OF I-SENSE IMPACT		6-7
The graph illustrates how the outdoor and indoor temperatures are measured using i-sense. As demonstrated, the sensor located on the outside of the doorway estimates an outdoor temperature of 9 °C (green line) whilst, i-sense sensor in the doorway provides a reading of 4 to 5 °C (purple line). This provides the evidence of accuracy readings of climate conditions in the doorway measured by Biddle technology.		6-7
CHIPS		6-7
CHIPS (Corrective Heating and Impulse Prediction System) technology automatically adjusts discharge velocity, air volume, discharge temperature and heat output. Outside, return air and discharge temperature sensors (i-Sense) are used to determine how much heat is required and Biddle’s control algorithm ‘translates’ the data into the strength required, removing the need for users to continually adjust settings. An air curtain with traditional control has heat and fan speed linked to one another: when the fan speed increases heat output increases.		6-7
HOTELS | AIR CURTAINS		6-7
RECTIFIER		6-7
Rectifier technology creates excellent downward penetration of the air stream, making it perfect for applications where the door height is greater than the air curtain width, preventing thermal conduction. The laminar air stream reaches the floor at a much lower air speed, preventing the air from colliding with the floor and resulting in efficient use of heat energy. The rectifier transforms the air turbulence caused by the fans into a laminar air stream, ensuring that the air curtain's warmth benefits the indoor climate. This prevents large air displacement, achieving optimal climate separation efficiency while using less energy.		6-7
CONTROLLED AIR STRENGTH		6-7
The Controlled Air strength technology is paired with the rectifier to create adaptable discharge width, which can be tailored to meet the specific climatic conditions of any given doorway. With six different settings to choose from, the air valve automatically adjusts the discharge width to optimise climate separation efficiency. As a result, the air volume and discharge velocity increase only as much as is necessary to maintain a comfortable indoor temperature while reducing energy consumption.		6-7
REVOLVING DOOR SOLUTION		6-7
The DoorFlow₂ Tourniquet model provides a bespoke curved discharge grille, manufactured to match the exact radius of the door – delivering uncompromised climate separation around the full circumference of the doorway.		6-7
The unit is recessed neatly above the revolving door enclosure, maintaining the architectural lines of the entrance and ensuring no visual disruption to the arrival experience, while keeping cold draughts and warm air losses firmly under control.		6-7
HOTELS | AIR CURTAINS		6-7
SR AIR CURTAIN		8-9
For high-traffic hotel entrances where maximum performance is required, the SR Comfort Air Curtain delivers industry-leading climate separation. Its patented i-sense and CHIPS technologies work in tandem continuously to measure door opening temperatures, calculating optimal settings and automatically adjusting air output to achieve separation efficiency of up to 94%. Six selectable settings allow integration with building management systems for fully automated operation.		8-9
REMOTE MONITORING & ANALYTICS		8-9
The b-touch control panel includes a USB data export function allowing usage data, energy consumption and comfort performance to be logged and analysed. For facilities managers of public buildings or large offices, this supports ongoing energy monitoring, maintenance planning and compliance reporting — core parameters within a regulatory environment that requires CO₂ monitoring and energy performance certificates.		8-9
BENEFITS		8-9
BMS integration via Modbus and BACnet		8-9
Door closed detection prevents unecessary energy use		8-9
Remote monitoring supports energy modelling		8-9
Door height up to 4.0m depending on the model		8-9
DOORFLOW2 AIR CURTAIN		10-11
The DoorFlow₂ is an ideal solution for hotel entrances, creating effective climate separation across a threshold without compromising the architectural integrity of the arrival experience. Able to warm cold incoming air in Winter and deploy filtered, ambient air to maintain comfortable temperatures in the Summer. The DoorFlow₂ uses Biddle's patented Rectifier technology to supply airstreams with minimum turbulence.		10-11
REVOLVING DOORS		10-11
For hotels with revolving doors at the main entrance, the DoorFlow₂ Tourniquet model provides a bespoke curved discharge grille, manufactured to match the exact radius of the door – delivering uncompromised climate separation around the full circumference of the doorway. The unit is recessed neatly above the revolving door enclosure, maintaining the architectural lines of the entrance and ensuring no visual disruption to the arrival experience.		10-11
SMART CONTROL		10-11
In Auto Mode, the control panel automatically adjusts heat output to optimise performance and minimise energy use. Built-in Wi-Fi connectivity means the DoorFlow₂ can be monitored, adjusted or locked remotely — ideal for multi-site facilities management across large public or commercial building portfolios.		10-11
BENEFITS		10-11
Mounting heights of up to 3.5m		10-11
BMS integration via Modbus and BACnet		10-11
WiFi control via Biddle App		10-11
Compatible with LTHW systems		10-11
TOURNIQUET MODEL		10-11
STYLE2 AIR CURTAIN		12-13
The STYLE2's distinctive cylindrical profile and perforated grille make it a design feature in its own right — available in a range of finishes and custom RAL colours to complement any interior scheme. Modular in design, units can be combined to cover any door width, and the range supports both horizontal and vertical installation configurations, making it suitable for the widest variety of entrance types.		12-13
ECONTROL		12-13
The ECONTROL system optimises air curtain performance while minimising energy use. In Auto mode it automatically maintains the set room temperature; Manual mode offers zero, 50% or 100% heat output. Timer clocks, door contact switch and BMS integration are all available.		12-13
BRAND INTEGRATION		12-13
For hotels where the entrance is part of the brand identity, the STYLE₂ goes beyond performance to become part of the architectural narrative. Custom RAL finishes allow the unit to compliment the hotel's interior palette, transforming a functional product into a designed feature that reinforces the property's character at the moment of arrival.		12-13
BENEFITS		12-13
Patented Rectifier technology		12-13
Ambient, water-, and electric-heated models		12-13
Installation to BMS via Modbus and BACnet		12-13
Customisable aesthetics with full range of RAL colours		12-13
DECO QT		14-15
FAN COIL UNIT		14-15
The DecoQT combines innovative engineering with quiet operation to create a climate solution made for hotel rooms. Its single, elegantly designed grille blends seamlessly into room décor and prevents direct visibility into the unit — maintaining the visual quality of the bedroom in a way that conventional fan coils cannot. The unique air inlet and discharge configuration directs conditioned air upwards toward the ceiling for even mixing, eliminating draughts at bed level.		14-15
PLUG AND PLAY		14-15
NEW BUILD AND RETROFIT		14-15
The DecoQT has been engineered with commercial reality in mind. Whether the project is ground-up or retrofit, the longer rooms remain out of service, the greater the impact on revenue. Factory-fitted valve packs accelerate installation, with units arriving ready to commission Single-piece tool-free access then ensures ongoing maintenance takes minutes rather than hours, achievable between guest stays. The DecoQT's compact form factor also unlocks installation opportunities conventional fan coil units cannot accommodate — including close to wet areas, in space-constrained ceiling voids, and within heritage buildings where structural intervention must be minimised. The result is a faster fit-out, reduced maintenance downtime, and longer equipment life, protecting both the guest experience and the hotel's commercial performance.		14-15
GUEST-FIRST DESIGN AND COMFORT		14-15
The guest rooms are the most important space in any hotel — and the most demanding from a climate perspective. Guests expect precise temperature control, individual adjustment, complete acoustic comfort and a system that disappears into the décor. Biddle's DecoQT fan coil unit was designed specifically for this challenge.		14-15
DO NOT DISTURB		14-15
TOTAL CONTROL		14-15
Independent on-site testing at The Rembrandt Hotel, London, confirmed the DecoQT achieving as little as NR23 (28.9dBA) at the bedside – quieter than a whisper, and well within the strictest acoustic standards demanded by luxury hotel brands.		14-15
EC/DC motors, double-inlet centrifugal fans and an acoustically lined casing combine to deliver this performance.		14-15
Modern guests expect to control their own environment. The DecoQT's touchscreen wall controllers give each guest intuitive temperature adjustment at their fingertips.		14-15
Styled to complement the hotel's interior with finish options to match the room's design language, the controllers support the perception of a premium, considered experience.		14-15
COMMUNAL AREA HEATING & COOLING		16-17
Communal spaces including lobbies, meeting rooms, restaurants present a different climate challenge again. Occupancy fluctuates dramatically. One moment empty, the next packed for an or conference. The climate system must respond instantly and efficiently while remaining invisible to the guest experience.		16-17
SMART CONTROL AND BMS INTEGRATION		16-17
OUT AND PROUD THE AESTHETIC CHOICE		16-17
Biddle’s Fan Coil Unit range supports full integration with hotel building management systems through a comprehensive range of digital and direct digital control options, compatible with all major BMS protocols.		16-17
Project-specific controls can be factory-fitted to match the hotel's existing infrastructure, reducing on-site commissioning time and ensuring seamless operation from day one.		16-17
Where hotel design calls for exposed services – a popular choice in industrial-luxe, boutique and converted properties – Biddle Fan Coil Units are customisable in their styling.		16-17
Painted finishes are available on request to complement any interior scheme, and UK manufacturing means quick delivery and the option to factory-fit controls and PIC valves, reducing installation time on site.		16-17
CASE STUDY		16-17
LUXURY HOTEL, MANCHESTER		16-17
Located in one of Manchester's busiest districts, this luxury hotel experiences constant footfall through its entrance, with guests checking in and out throughout the day and evening. The reception and dining area required a quiet, energy-efficient heating and cooling solution to ensure guests enjoyed an ideal dining experience while maintaining a pleasant and welcoming ambience. Aesthetics were equally important. The HVAC solution would be installed without a false ceiling – meaning all components, pipework and ductwork would be clearly visible. Biddle's dedicated specification team worked closely with the client to find the perfect solution to meet both performance and visual requirements.		16-17
SOLUTION		16-17
Biddle specified the ProAir Series 270 range of fan coils, ideal for exposed installations due to their exceptionally low noise levels. Even at full capacity, the units produce just 38dB — quieter than the average library. Internally lined casings and the most energy-efficient EC/DC motors available combine to deliver this performance.		16-17
Although supplied as standard in galvanised steel, the units were painted to comply with the hotel's strict aesthetic requirements, integrating seamlessly with the surroundings. The fan coils were also supplied with direct digital controls, allowing full integration into the building's BMS via BACnet. Removable G2 wire frame filters ensure clean air output and enable fast, trouble-free cleaning.		16-17
CONCLUSION		16-17
The ProAir Series 270 units were expertly installed on the exposed hotel ceilings, delivering ideal heating and cooling levels while maintaining the lowest noise levels.		16-17
PROAIR FAN COIL UNITS		18-19
The ProAir Series is Biddle's high-performance fan coil unit, designed for the demands of modern UK projects. Available in two depths and a wide range of sizes, the ProAir delivers precise, quiet heating and cooling tailored to each space, from intimate restaurants to large conference suites. Internally lined casings ensure exceptionally low noise, and an optional acoustic inlet extension is available for the most demanding acoustic environments.		18-19
FAST DELIVERY		18-19
Designed and built in the heart of the UK, with a typical lead of 3 weeks, the ProAir Series is available with one of the fastest delivery times on the market. Every unit is assembled in Biddle's purpose-built manufacturing facility, where controls and valve sets can be factory-fitted and tested before leaving site		18-19
FLEXIBLE CONTROLS		18-19
The ProAir can be supplied as a packaged unit with all controls and valves factory-fitted, or configured to work with any major brand of third-party controller — reducing installation and commissioning time on site. Full BMS integration is supported across all common protocols.		18-19
BENEFITS		18-19
Available in 235mm and 270mm depths		18-19
UK-manufactured, rapid delivery		18-19
Low noise output – ideal for office spaces		18-19
Factory-fitted controls and PIC valves available		18-19
AIR2AIR HEAT RECOVERY HEATING & VENTILATION		20-21
In hotels, high occupancy levels generate significant heat and moisture, while modern airtight construction can trap stale air and CO₂. Biddle's Air2Air Heat Recovery System tackles both challenges at once — continuously delivering fresh, filtered air while recovering up to 80% of the heat from outgoing stale air, dramatically reducing the energy cost of ventilation across the property.		20-21
INTELLIGENT VENTILATION		20-21
CO₂ demand-controlled ventilation adjusts performance based on actual occupancy, ramping up during busy periods such as breakfast service, wedding receptions and conference events, then easing back when spaces are quieter. The result is consistently fresh air where guests need it, without the energy waste of running ventilation at full capacity around the clock.		20-21
FREE COOLING IN SUMMER		20-21
A built-in summer bypass mode brings cooler outside air directly into the building during warmer periods, bypassing the heat exchanger – providing free cooling and helping to manage humidity in lobbies, restaurants and event spaces during peak trading. This protects both guest comfort and operating margins through the warmer months.		20-21
BENEFITS		20-21
Recovers up to 80% of heat from outgoing air		20-21
CO₂ demand-controlled ventilation		20-21
Summer bypass for free cooling		20-21
Compatible with AHUs and complete climate systems		20-21
HEATING & VENTILATION SOLUTIONS		20-21
Biddle's heating and ventilation solutions maintain a consistent, comfortable temperature throughout public buildings and office environments. Compatible with modern low-temperature systems including heat pumps, they deliver efficient, quiet performance across spaces of every size and configuration.		20-21
BENEFITS		20-21
VARIANTS		20-21
Precise zoned temperature control across diverse space types		20-21
The Comfort Circle Cassette delivers heating, cooling and ventilation from a single, discreet ceiling-mounted unit — fitting perfectly within a standard 600×600mm ceiling grid.		20-21
The Air2Air Heat Recovery System captures up to 80% of the heat from outgoing stale air and uses it to warm incoming fresh air, dramatically reducing the energy cost of ventilation while maintaining superior indoor air quality.		20-21
High-efficiency EC motors minimise energy consumption		20-21
Full BMS integration for centralised energy monitoring and control		20-21
Low noise levels — unobtrusive in high-occupancy environments		20-21
COMFORT CIRCLE HEATING & VENTILATION		22-23
In public buildings and offices, keeping walls free for glazing, cladding and architectural features is essential. Biddle's Comfort Circle ceiling cassette fits perfectly within a standard 600×600mm ceiling grid, leaving the entire wall envelope uncompromised. The Comfort Circle's circular air discharge grille draws air in through the perforated centre and, once conditioned, discharges it at a fixed 45° angle towards the floor — delivering even, draught-free distribution across the occupied space.		22-23
SMART SUSPENSION SYSTEM		22-23
Units can be installed either before or after fitting a suspended ceiling, and the adjustable mounting system allows precise positioning in any direction with minimum effort. This makes the Comfort Circle particularly well-suited to office fit-outs and refurbishments where installation time and disruption to building occupants need to be minimised.		22-23
HEATING AND COOLING IN ONE		22-23
The Comfort Circle is available as both a heater and as a unit capable of both heating and cooling, giving building operators complete year-round climate control from a single, discreet ceiling-mounted unit. It is also suitable for use with low water temperature systems, including heat pumps — supporting Net Zero Carbon building strategies.		22-23
BENEFITS		22-23
Uniform air distribution across the building		22-23
Low energy EC fan motors		22-23
Discreet installation option – 600mm x 600mm		22-23
Compatible with LTHW systems		22-23
BIDDLE CLIMATE CONTROL SOLUTIONS		24-25
Every Biddle product is designed to work together as part of a complete, integrated climate system. No two retail environments are the same, and no Biddle solution is the same either. We approach every project fresh, combining the right products in the right configuration to solve each client's specific challenges.		24-25
SR COMFORT AIR CURTAIN		24-25
Market-leading climate separation for high-traffic public entrances. Patented i-sense, CHIPS, Controlled Air Strength and Rectifier technologies. Separation efficiency up to 94%. Six selectable settings. Full BMS integration.		24-25
DOORFLOW2 AIR CURTAIN		24-25
Minimalist, filter-free air curtain for office and public building entrances. Available in recessed, cassette, free-hanging and tourniquet styles. Compatible with low water temperature systems. Wi-Fi app control. Mounting heights to 3.5m.		24-25
STYLE2 AIR CURTAIN		24-25
Designer air curtain for prestige entrances. Distinctive cylindrical profile available in a range of finishes and custom RAL colours. Climate separation efficiency up to 80%. Horizontal or vertical installation. Modular — covers any door width.		24-25
DECO QT FAN COIL UNIT		24-25
Engineered specifically for hotel rooms, the DecoQT delivers heating and cooling at as low as NR23 combined with a discreet, elegant single grille that integrates seamlessly into any room design.		24-25
PROAIR FAN COIL UNIT		24-25
High-performance fan coil unit for the UK specification market. Available in 270mm and 235mm depths. Very low noise. High-efficiency EC motors. Factory-fitted controls and PIC valves. Full BMS integration. TM65 data available.		24-25
AIR2AIR HEAT RECOVERY		24-25
Heat Recovery System captures up to 80% of heat from outgoing stale air and warms incoming fresh air. CO₂ demand-controlled ventilation adjusts performance based on actual occupancy, and a summer bypass mode brings in cooler outside air directly during warmer periods.		24-25
COMFORT CIRCLE CASSETTE		24-25
Heating, cooling and ventilation in a single 600×600mm ceiling unit. Patented circular discharge for even, draught-free comfort. Suitable for heat pump systems. Recessed or exposed installation. Low noise. BMS compatible.		24-25
Biddle Schools Climate Control Solutions (2).pdf		26

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