By installation method
Built-in chambers form a section of an air handling unit and are installed at the factory or on site as part of the central unit. Separate (duct-mounted) chambers are installed in the duct network as standalone components.
Planas ventilation equipment
Mixing chambers for supply and supply-and-exhaust air handling units
A mixing chamber is a section of a ventilation system where fresh outdoor air mixes with recirculated air from the premises. It allows the proportion of fresh air to be adjusted and the heat or cooling of already conditioned air to be reused, helping the system operate more efficiently and maintain a comfortable indoor climate.
- Recirculationreuse of heat from conditioned air
- Adjustmentcontrol of the proportion of fresh air
- Integrationoperation as part of a central ventilation system
- Configurationsbuilt-in and separate duct-mounted options
What is a mixing chamber and how does it work?
A mixing chamber is a housing with two or more inlet connections and one outlet connection. Fresh outdoor air and air drawn from the premises enter through separate connections. Air dampers regulate the ratio of the air streams; inside the housing, the streams mix to achieve the required temperature and composition. The resulting mixture is then sent further through the ventilation system for filtration, heating and cooling, or directly into the premises. Reusing heat from already conditioned air reduces the load on heaters and coolers, and therefore lowers operating costs. The main components are the housing, usually made of galvanized steel; outdoor-air and recirculated-air dampers; electric actuators or manual controls; seals and thermal insulation; and inspection hatches for maintenance. The controls can adjust damper positions in real time, balancing the supply of fresh air with energy savings. Mixing chambers can be installed as a section of a supply or supply-and-exhaust air handling unit, or as a separate component in the duct network. When selecting a chamber, consider the project-specific ratio of outdoor to recirculated air, whether damper adjustment is required, housing airtightness and insulation requirements, access for maintenance and cleaning, and compatibility with the existing unit or ductwork.
Design
What a mixing chamber consists of
A housing with two inlet connections for outdoor and recirculated air and one outlet connection for the prepared air mixture.
Outdoor-air and recirculated-air dampers (valves), along with electric actuators or manual controls.
Housing seals and thermal insulation, plus inspection hatches for maintenance and cleaning the internal surfaces.
Where mixing chambers are used
Mixing chambers are used where central ventilation is in operation and it is important to reduce energy consumption for heating and cooling air. The type and configuration are selected to suit the specific facility and operating conditions.
- 01Office and administrative buildingsMaintaining a comfortable indoor climate as occupancy varies and the system operates throughout the day.
- 02Shopping centers and storesLarge volumes of air to be conditioned and the need to save energy during air treatment.
- 03Hotels and residential complexesStable air conditions in rooms and apartments with centralized ventilation.
- 04Industrial and warehouse premisesFacilities with constant or variable air exchange requirements and a need for an energy-efficient system.
- 05Facilities with central ventilationVentilation units where precise control of the fresh-air proportion is required.
- 06Buildings where energy efficiency is a prioritySolutions that need to save energy on heating and cooling air through recirculation.
Request a mixing chamber recommendation
A Planas specialist will help identify the right chamber configuration for your facility, including the unit type, damper control method, and airtightness and insulation requirements. Fill out the form and we’ll confirm the initial details and prepare a proposal.
Working across all of Kazakhstan
Configuration options
Types of mixing chambers
The configuration is selected for the project based on the installation method, damper control type, and operating requirements.
By damper design
Manual control — damper positions are set by hand, a simple solution for systems operating in a constant mode. Electric actuator — dampers are adjusted automatically in response to a control system signal, changing the proportion of fresh air according to the facility’s operating mode.
By configuration
Standard — for normal operating conditions. Insulated and airtight — with additional thermal insulation and seals for handling cold outdoor air and meeting higher energy-efficiency requirements. With filtration — includes a pre-filtration section.
How a mixing chamber works
The operating principle is based on mixing two air streams and adjusting their ratio directly inside the chamber housing.
- 01Air streams enter
Fresh outdoor air and air from the premises enter the chamber through separate inlet connections.
- 02Damper adjustment
Air dampers set the ratio of outdoor and recirculated air streams according to the project design and system operating mode.
- 03Mixing inside the housing
The air streams mix inside the housing to achieve the required temperature and composition.
- 04Air is supplied to the system
The prepared mixture is sent for further treatment — filtration, heating, or cooling — or directly into the premises.
Equipment selection
We’ll select a mixing chamber for your project
To recommend the right solution, a specialist needs the initial details about the facility and ventilation system. Selection is based on airflow, duct type, control requirements, and operating conditions — calculations are best entrusted to engineers.
- Project airflow rate and ratio of outdoor to recirculated air
- Unit type: built-in section or separate duct-mounted component
- Requirements for damper control and automation
- Housing airtightness and thermal insulation requirements
- Access to the chamber for maintenance and cleaning on site
- Compatibility with the existing air handling unit or ductwork
Key benefits of mixing chambers
A mixing chamber makes ventilation system operation more predictable and efficient while maintaining comfortable air conditions in the premises.
Energy savings
Recirculation allows heat or cooling from already conditioned air to be reused.
Precise adjustment
The damper-set proportion of fresh air can be changed according to the facility’s operating mode.
Stable indoor climate
The air mixture is supplied to the premises at the required temperature and with the required composition.
Reduced equipment load
Less load on heaters and coolers when conditioning supply air.
Easy integration
The chamber can be built into a unit or installed in an existing duct network.
Automatic control
Damper actuators operate in response to signals from the control system.
Reliable design
The housing, dampers, seals, and thermal insulation are designed for long-term operation.
Lower operating costs
Savings on air heating and cooling reduce overall ventilation costs.
Why Klimatrade
Supply and support for Planas equipment
Klimatrade supplies climate control equipment for commercial and industrial facilities through professional partners, design organizations, and installation companies. We help select equipment to meet project requirements, provide technical advice, support designers and engineers, prepare technical and commercial proposals, and arrange delivery from our warehouses in Almaty and Shymkent. Technical support is available at every stage of project implementation, and warranty service is provided through service partners.
- Equipment selection to meet project requirements
- Technical consultations and support for designers
- Preparation of technical and commercial proposals
- Supply from warehouses in Almaty and Shymkent
- Technical support throughout project implementation
- Warranty service through service partners
Buy a mixing chamber in Kazakhstan
If you need a mixing chamber for an air handling unit, an engineering facility, or an upgrade to an existing system, Klimatrade specialists will help select equipment to meet your requirements. We supply Planas mixing chambers for a range of applications, from office and retail buildings to hotels, industrial facilities, and warehouses with central ventilation. Each mixing chamber is selected individually, taking into account airflow, the ratio of outdoor to recirculated air, damper control requirements, housing airtightness and thermal insulation, operating conditions, and access for maintenance. For this reason, the cost is calculated after the facility’s technical details have been confirmed. Klimatrade specialists will help select a mixing chamber to suit your facility’s requirements: airflow, the ratio of outdoor to recirculated air, damper control requirements, housing airtightness and thermal insulation, operating conditions, and access for maintenance. Equipment is selected individually for every project. If you’re planning to buy a mixing chamber for an air handling unit, an upgrade to an existing system, or a new engineering project, submit an inquiry. We’ll calculate the specifications, select the configuration, and prepare a commercial proposal. The price of a mixing chamber depends on capacity, dimensions, housing configuration, automation, materials, and the facility’s technical requirements. We supply Planas mixing chambers throughout Kazakhstan. Delivery is available to Almaty, Astana, Shymkent, and other cities. Submit an inquiry and Klimatrade specialists will help find the right solution for your ventilation system and calculate the equipment cost.
Frequently asked questions about mixing chambers
What is a mixing chamber?
It is a section or standalone component of a ventilation system where fresh outdoor air mixes with recirculated air from the premises. This mixing helps save energy and maintain a comfortable indoor climate.
What is a mixing chamber used for?
It allows heat from already heated air to be reused and the amount of fresh air to be adjusted precisely. This reduces heating and cooling costs.
Where is a mixing chamber installed?
It can be installed as a section of an air handling unit or as a separate component in the duct network, upstream or downstream of fans and heat exchangers.
Can the proportion of fresh air be adjusted?
Yes. In models with electric actuators, the proportion of fresh air changes automatically in response to a control system signal. In simpler versions, damper positions are set manually.
Is automation required?
Automatic control is recommended for efficient operation. It allows the system to adapt to the facility’s actual conditions and save additional energy.
Which facilities benefit most from mixing chambers?
They are particularly useful in buildings with central ventilation where reducing energy consumption is important, including offices, shopping centers, hotels, industrial facilities, and warehouses.
How do I select a mixing chamber?
Selection is based on airflow, duct type, control requirements, and operating conditions. It is best to leave the calculations to specialists.
Does a mixing chamber require maintenance?
Yes. Damper, actuator, and seal operation should be checked periodically, and dust should be removed from the inside surfaces of the housing.
Consultation
Let’s discuss your facility’s requirements
Tell us about your ventilation system parameters and air control requirements. A Planas specialist will help determine the right mixing chamber configuration and prepare a supply proposal.