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Design of hvac systems

Design, supply, installation of heating, ventilation and air conditioning systems!

Engineer is a group of companies with many years of experience in the construction, design, installation and supply of equipment of leading brands, uniting to create projects thought out to the smallest detail, corresponding to the wishes of the customer, energy-saving technologies and payback period. We constantly update our range of services and equipment, focusing on the best and proven technologies that appear in the climate world, consistently maintaining high quality standards in our work.



  • operational requirements
  • equipment reliability
  • economic efficiency
  • sanitary requirements
  • building and architectural requirements
  • fire and safety requirements

We can order project documentation for the following objects:

  • cottages, private houses, country houses, townhouses from 250 m2;
  • hotels and hotels of international operators;
  • restaurants and cafes with increased climate requirements;
  • class A office and administrative buildings;
  • sports centers;
  • premium shopping centers;
  • vip cultural and entertainment establishments;
  • industrial buildings with an administrative part with increased climate requirements;
  • apartments from 150 m2;
  • private pools.

Heating - artificial heating of premises in order to maintain the temperature at a given level by compensating for heat losses in them through heating devices.

The home heating system is a complex communication system, the rationality of which determines the amount of future heating costs. If you do not want to overpay for heat, the system design must be developed in detail, professionally and in advance. That is, even before laying the foundation. Designing a house saves up to 15% of funds and up to 20-30% of construction time. If the building is thought out to the smallest detail, you can be sure of its durability, reliability and safety. The latter is especially true when it comes to the heating system.

The heating system, like any other engineering communication, begins with the design. Designing a heating system is a complex and time-consuming task. However, our certified specialists have sufficient knowledge of the latest developments and technologies in this area to solve it most effectively. At this stage, specialists study in detail the building to be heated, carry out calculations, select equipment and additional components. And all this in order to keep your home warm in any weather, and the budget spent with maximum effect. As a result of their work, you will receive a set of documents with a detailed action plan, instructions, equipment specifications.

We also carry out installation and commissioning of heating systems by partners working on gas, liquid and solid fuels, electricity. All work is carried out taking into account the budget and wishes of the Customer. It can be either a full-fledged project or a part of it (engineering, assembly, sketch). All specialists have rich practical experience (over 15 years) in the design and installation of heating systems.

Our projects are developed individually for you, taking into account the requirements for the design assignment, project documentation, the purchase of equipment and materials, construction supervision to avoid negative consequences, as well as improve performance.

    As a result of design work, you get:
  • An explanatory note that describes in detail the heating system, its components and characteristics. Also included are calculations from a specialized program.
  • Drawings that include a heating scheme, drawings of the equipment used and its location, as well as service areas and routes, along with piping of nodes in detail
  • The as-built documentation includes a heating project adjusted taking into account the actually installed system, the final location of its elements


  • Maintaining a comfortable temperature
  • No condensation on outdoor structures
  • Get a high-quality heating system developed by a specialist with many years of experience, so that all design features, physical phenomena and operation features are taken into account;
  • Eliminate alterations that inevitably occur during installation without a project;
  • Eliminate downtime during commissioning and the search for a responsible specialist for the operation of the system;
  • Get a high-quality technical solution without marketing that will last a long time;
  • Reduce capital costs - the owner buys equipment and consumables that correspond to his housing in terms of productivity, power, and therefore does not overpay;
  • It is easier to choose a contractor. You have an estimate, equipment specification, procedure with deadlines;
  • It's easier to buy materials. Designers accurately calculate the volume of building materials, allowing you to save up to 20%;
  • Buy equipment faster. You receive a list of equipment suitable specifically for your home;
  • It is safer to start installation. You know exactly what work and in what time frame should be performed, as well as how much money will be spent on everything;
  • reduces operating costs - the less and more economical fuel is spent, the less often it will be necessary to maintain lines and equipment;
  • helps to implement a safe and durable system - most often the cause of accidents and failures is due to the fact that the system is poorly designed or not designed at all;
  • provides the customer with a comfortable home - designers select the latest equipment and solutions, supplying the system with automation and adjustment levers;
  • guarantees safety in cooperation with a third-party contractor - you know exactly how much the installation and commissioning of the system will cost, how much materials and time will be required. It is more difficult to deceive the customer in such a situation.


  • the area of ​​premises for heating;
  • floor plan of the building with sections;
  • climatological features of the area;
  • the location of the building on the cardinal points;
  • materials for floors, ceilings, walls;
  • type of construction, coefficient of thermal conductivity, specific gravity, wall thickness, outer door, roof;
  • geometric features of the roof, glazing;
  • window sill height;
  • the presence of heating radiators.

Coatings have different thermal resistance values, and depending on the structures and materials used, the design of the system will vary.


The project consists of text documents and drawings, which include:

  • layout of equipment, highways;
  • a detailed diagram of the heating system with all the main and auxiliary elements;
  • service areas and track sizes;
  • binding of boilers, boilers, units with detailing, etc.
  • terms of reference (compiled by the contractor) and technical conditions for implementation;
  • a set of working diagrams for installation: type of wiring, configuration, characteristics of pipelines, size and placement of devices, arrangement of a boiler room, detailing of individual nodes, equipment specification, and so on;
  • terms of reference for other engineering systems (all communications must coexist harmoniously);
  • calculation of the cost of installation and materials;
  • information about the design company (permits, licenses);
  • permits provided by regulatory authorities.

An explanatory note is attached to the project, which describes the characteristics of the heating system, a description of the specifics of convectors, fittings and other components.

Design: components and stages

The heating system consists of three components: a boiler room, heating appliances and a decoupling system that connects them. In order to achieve coordinated and energy efficient operation of all components, the designer:

  • collects all the initial data for your specific building;
  • calculates the heat loss of a particular building, which depends on the location of the house, materials and other factors;
  • selects a source of heat supply, technical solutions of systems, taking into account safety, experience in construction and operation;
  • sums up hydraulic calculations;
  • determines a profitable heating scheme.

There is no one-size-fits-all solution for a heating circuit. Therefore, designing a system for each specific house is a search for a unique solution.

1. Calculation of heat losses

To organize efficient heating, you need to determine where and how much heat the house loses. It depends on the following factors:

  • construction site;
  • walls - material, design, thickness, thermal conductivity, specific gravity;
  • roof - material, design, shape, height, thickness, thermal conductivity, specific gravity;
  • indoor humidity;
  • vapor permeability;
  • heat absorption;
  • heat capacity;
  • the cost of insulation and energy resources;
  • foundation and floor - execution materials;
  • glazing - ordinary, double-glazed windows, etc.;
  • ceiling screed and its thickness.

Of particular importance for calculations is the geometry of the premises, which also contributes to the formation of cold zones and heat loss.

2. Hydraulic calculations

The task of hydraulic calculation is to determine the optimal number of heating devices, pipe diameters and balancing fittings settings for a particular house. Without calculation, you can install too much or too little equipment and, as a result, you will either overpay or freeze.

When calculating, the designer takes into account:

  • materials for the manufacture of pipelines and underfloor heating;
  • length and number of turns of the heating route;
  • elevation marks;
  • location of heating appliances and risers;
  • types of heating devices and their features;
  • heat loss along the length of the pipes;
  • thermal expansion of pipelines;
  • required coolant flow rate and its type for each device;
  • regulation requirements and valve type;
  • the need for third-party automation;
  • inertia of the room;
  • heat capacity of the building;
  • relative humidity of the heated room;
  • the presence of natural ventilation;
  • safety requirements;
  • the location of people's places of residence relative to heating elements;
  • window height;
  • temperature frames for rooms.

This takes into account the diameter of the pipeline, the power of the pumps, the resistance coefficient of the heating system.

3. Heating scheme:

  • scheme with top or bottom eyeliner;
  • vertical or horizontal heating scheme;
  • one- or two-pipe heating scheme;
  • scheme with beam wiring;
  • scheme of dead-end or associated heating.

The choice is determined by the totality of the characteristics of your home.

When designing, the following scientific articles are taken into account

  • "Efficient systems of heating, ventilation, air conditioning and heat supply"
  • Modern technologies in heating, ventilation and air conditioning, requirements for training specialists
  • Ventilation, heating and cooling of the restaurant hall
  • Influence of automatic regulators on the hydraulic regime of water heating systems
  • Influence of building glazing characteristics on energy consumption in heating and cooling systems
  • The influence of the characteristics of the piping unit on the leakage coefficient for a single-pipe heating system
  • Water treatment for heating, ventilation, air conditioning and refrigeration systems
  • Water floor heating
  • Diagnostics of thermal-hydraulic modes and performance characteristics of heating systems
  • Design radiators - a non-standard approach to the choice of heating devices
  • How to automate a heating point and reduce heating costs?
  • Criteria for thermal comfort in the design of heating systems
  • Multi-apartment buildings with close to zero heat consumption for heating and ventilation
  • Features of designing heating and ventilation systems for fitness clubs
  • Features of the design of heating and air conditioning systems in medical institutions
  • Heating and ventilation of modern warehouse complexes
  • Temple heating
  • Assessment of heat consumption for heating and ventilation in residential buildings
  • Panel radiant heating and cooling systems for buildings
  • Apartment heating systems
  • The use of antifreeze in heating, ventilation, air conditioning systems
  • Calculation of the variable hydraulic mode of operation of the water heating system

Ventilation is the replacement of indoor air in order to ensure the required quality, maximum permissible concentrations of harmful substances (MAC), heating, cooling, humidification, dehumidification.

The ventilation system ensures the supply of fresh air and the removal of “exhausted” air, thanks to which a healthy microclimate is established in the room. And if natural ventilation is enough for a small room, then a complex branched system will be required for a large complex or a private house. In the latter case, one cannot do without qualified design, which will avoid such problems as:

  • low oxygen content in the room, provoked by weak draft;
  • high heating costs, which arise due to excessive traction and cooling of the room;
  • high humidity, which contributes to the appearance of fungi due to weak traction;
  • increased dryness, which adversely affects the health and condition of people, animals, plants.


The ventilation system of a house (from a private cottage to an industrial facility) consists of the following components:

  • Fans. Provide air circulation. The type and size of the object determines the type of fan (low, medium and high pressure).
  • Air filters. Ventilation not only brings outdoor air into the room, but also additionally cleans it from pollution.
  • Heaters. To prevent the premises from cooling out during the ventilation process, air heaters heat up the incoming air masses. They are water and electric.
  • Silencers. The supply and exhaust ventilation is quite noisy, so silencers are built into it to increase the level of comfort.

The designer determines what equipment to use, where to install it.


Ventilation and its design without fail take into account the climatic and meteorological conditions of the construction area, the design parameters of the outside air (temperature, humidity, concentration of harmful substances). In the ventilation and air conditioning project, based on the data on the calculated amounts of harmful emissions in the room, the volume of air removed by local exhausts, if any, the volume of supply air necessary to dilute the harmful substances in the room is calculated. If necessary, cleaning of the supply air or circulating in the room is applied.

For premises requiring air conditioning, an id-diagram of the air treatment process is built in order to create a comfortable or technologically necessary climate. All this would not have been possible without automation and dispatching systems for the process of regulating ventilation systems.

However, do not forget about fire protection measures (standardized materials for air ducts, installation of fire dampers, organization of fire resistance of air ducts) and noise protection measures.

The explanatory note of the project for ventilation contains all the features of the arrangement of the ventilation system, describes in detail the technical solutions, heat consumption and installed capacity of the equipment, ventilation characteristics and calculation of air exchange.

The drawings give an idea of ​​how the ventilation equipment, air distributors, air ducts, lines and other elements are located.

Project composition

To reduce the cost of purchasing equipment, as well as increase the flexibility and efficiency of the ventilation system, the selection of equipment is carried out using specialized computer programs. As a rule, such programs are presented by the manufacturing companies themselves. The project itself consists of two parts:

  • Estimated. Based on the calculation of heat and moisture entering the premises, the amount of harmful emissions, the air flow is calculated - both supply and exhaust, aerodynamic and acoustic calculations are performed, the type of ventilation is prescribed, the necessary equipment and technical solutions are indicated.
  • Graphic. This includes floor plans, center sections, and room detailing with individual elements (such as fans and air ducts).
  • IP Gantman is responsible for each project with his own reputation. Thanks to progressive technical solutions, automated calculations and the use of advanced software technologies, cooperation with our company leaves only positive emotions. You will receive high-quality project documentation at an affordable price.

    Design stages

    Each ventilation project is individual and requires attention to all details. Let's single out the main stages of design:

    • Preparation of pre-project proposals. All initial permit documentation is prepared and coordinated in the relevant authorities.
    • Writing a technical task. The customer takes the most active part in this.
    • Designing a ventilation concept. The specificity and purpose of the equipped premises serves as the initial information.
    • Calculation of heat inflows and air exchange parameters. This stage is accompanied by the planning of internal and external thermal loads.
    • Justification of the project from a technical and economic point of view.
    • Drawing up a working draft, according to which construction and installation work will be carried out. The final working draft of ventilation is coordinated in the relevant organizations (SES, fire inspection and a number of others if necessary).

    After the installation work is completed, working documentation is prepared, consisting of as-built drawings and specifications.

    Calculation of thermal loads

    When calculating the heat balance of the ventilation system, all factors that affect the condition of the indoor air are taken into account. The calculation is made by known methods. The heat balance is calculated by analyzing the losses and inflows of warm air into the room. According to the purpose of the room, the heat load is external and internal.

    The external load is either positive or negative. It depends on the season, as well as the time of day. This load consists of ventilated and filtered air. Such air almost always does not coincide in its parameters with the meteorological requirements that apply to the room. In summer it is too hot and humid; in winter, on the contrary, it is unnecessarily cold and dry. Only in autumn and spring is the outside air partially suitable for cooling or heating a building or structure.

    Internal thermal loads are created by people operating appliances and equipment inside the building. In industrial-type premises, products of various reactions and hot materials act as additional sources of heat release. Internal loads are always positive, therefore they are eliminated in summer, and in winter they reduce the load on heating equipment.


    To determine the power, type, number and location of equipment, a specialist conducts a technical calculation. In doing so, it takes into account a number of factors:

    • the number, size and relative position of the premises;
    • the purpose of the premises;
    • the number of people in the room;
    • the number and power of heating devices;
    • design features of the house;
    • climatic features of the area.

    Based on the information collected, the designer determines the layout of air ducts, ventilation units and other equipment, its type, capacity and dimensions.

    Principles for selecting a ventilation system

    The main principle of choosing a ventilation system is the comparison of several options, taking into account technical and economic parameters. To make the best choice, it is necessary to objectively evaluate the project for compliance with the following requirements:

    • Sanitary. This includes the need to maintain a certain temperature and humidity, supply fresh air, remove air.
    • Architectural and construction. Here we are talking about the laying of air ducts and pipelines.
    • Fire-fighting. To make the right design decisions, you need to know which category certain rooms belong to. So, A and B indicate fire and explosion hazardous premises, C - fire hazardous, and D - normal. Depending on the category, different schemes for laying engineering networks are selected, check and fire dampers are installed, equipment blocks are placed separately.
    • Operational. In order for the project to be rational, it is worth considering ventilation control in advance. It can be autonomous, remote (from the central console), separate for different groups of rooms.
    • reliability requirements.
    • Economic. For a project to be competitive and economically viable, its price must be optimized. This is done by purchasing equipment after comparing its cost from different manufacturers. For a large facility, it is mandatory to develop several basic ventilation schemes using various types of equipment. The most suitable scheme is selected after a comparative evaluation of the available options.


    • "Calculation and design of controlled natural and hybrid ventilation in multi-storey residential buildings"
    • "Efficient systems of heating, ventilation, air conditioning and heat supply"
    • Modern technologies in heating, ventilation and air conditioning, requirements for training specialists
    • Automation of engineering systems. Complete supply ventilation systems
    • Acoustic requirements and design rules for low-noise ventilation systems
    • Acoustic comfort: how to make mechanical ventilation quiet
    • Acoustic calculation as a basis for designing a low-noise ventilation (air conditioning) system
    • Analysis of European and Russian rules for the design of traditional duct smoke ventilation systems for closed-type car parks
    • Analysis of modern ventilation technologies
    • Aerodynamic characteristics of fire dampers of ventilation systems
    • Ventilation - problems and solutions
    • Ventilation - where you need it
    • Ventilation of woodworking shops
    • Ventilation for multi-storey residential buildings
    • Ventilation of residential buildings with a warm attic
    • Ventilation and smoke removal at airports around the world
    • Ventilation and air conditioning of medical institutions
    • Ventilation and air conditioning: industry problems
    • Ventilation and smoking Air quality control
    • Ventilation and certification - the basis of environmental safety of the home
    • Ventilation of covered car parks
    • Catering Kitchen Ventilation: Problems and Solutions
    • Ventilation of premises of multi-storey residential buildings 
    • Ventilation of catering establishments
    • Ventilation of service industries
    • Ventilation with variable air flow for office buildings
    • Ventilation of attics to eliminate icicles on the roof eaves
    • Ventilation, heating and cooling of the restaurant hall
    • Explosion-proof design of ventilation equipment
    • Influence of the smoke ventilation system on the operation of automatic fire extinguishing installations
    • Water treatment for heating, ventilation, air conditioning and refrigeration systems
    • Energy Saving Opportunities in Controlled Natural Ventilation Systems
    • Possibility of natural ventilation for high-rise buildings
    • Selection of air velocity in the ducts of ventilation, air conditioning, aspiration and smoke protection systems
    • Displacement ventilation in non-industrial buildings
    • Displacement ventilation in schools
    • Displacement ventilation of office premises: a refined calculation model
    • Generation of aerodynamic noise in the elements of ventilation systems
    • Hybrid ventilation in multi-storey residential buildings
    • Silencers of ventilation systems and their acoustic characteristics
    • Natural ventilation of residential buildings
    • Natural ventilation with inducement
    • Smoking areas. Design of ventilation systems. Italy experience
    • Impulse smoke ventilation of underground car parks
    • How to choose a ventilation system for your home
    • How to install ventilation in the garage
    • Air quality and ventilation
    • Air quality and energy efficiency of ventilation systems in public buildings
    • Combined air conditioning system for an office building with displacement ventilation and VRF cooling
    • Roof ventilation and heating units
    • Multi-apartment buildings with close to zero heat consumption for heating and ventilation
    • New equipment for cleaning ventilation emissions from industrial kitchens
    • On the high efficiency of fans and the efficiency of ventilation systems
    • On improving the energy efficiency of ventilation systems with variable air flow for the hot shop of a public catering enterprise
    • Determining the minimum outdoor air flow when designing ventilation systems
    • Experience in designing ventilation and air conditioning systems for high-rise buildings
    • Experience in developing energy-efficient ventilation systems for residential buildings
    • Features of designing ventilation of production shops
    • Features of designing heating and ventilation systems for fitness clubs
    • Design features of smoke ventilation systems
    • Heating and ventilation systems of hotel-type buildings
    • Heating and ventilation of modern warehouse complexes
    • Evaluation of the aerodynamic efficiency of ventilation systems
    • Assessment of heat consumption for heating and ventilation in residential buildings
    • Personal ventilation
    • Improving ventilation efficiency through flow and temperature control: VAV and VVT systems
    • Apartment ventilation system with heat recovery units
    • Practical recommendations for combating coronavirus for ventilation systems
    • The use of antifreeze in heating, ventilation, air conditioning systems
    • Application of natural ventilation for urban buildings
    • Problems of ventilation and energy saving in underground car parks
    • Calculation of annual energy costs of ventilation and air conditioning systems
    • Design parameters of the outdoor climate for the design of refrigeration, ventilation and air conditioning systems
    • Demand-controlled ventilation systems
    • Efficient ventilation and air conditioning control

    The most important design stage

    The principle scheme of ventilation at a particular facility is approximately the same, but there are always various nuances. They are reflected in several solutions provided to the customer to choose from. The experience and knowledge of a qualified designer lies in finding the best solutions and their presentation. The main indicators of the received design solutions are displayed in the text of the technical and commercial proposal, which prescribes an approximate list of equipment and provides a preliminary calculation of all work. The customer chooses one of the options, after which a feasibility study is done on it. It does not contain exact data, but there are all the key decisions.

    The feasibility study contains a schematic diagram, an approximate list of equipment and its location, the cost of the system and the main characteristics of its performance. After the approval of such a document by the customer, all that remains is to perform the calculations, after which the working draft will be ready - the result of the design of the ventilation system.

    Air conditioning is the treatment of supply or recirculation air in order to maintain the required temperature and relative humidity in the premises for people to stay, technological processes, and ensure storage conditions.

    The air conditioning system is a system with many possibilities that allows you to install and maintain a comfortable and healthy microclimate in the premises. Air conditioners regulate parameters such as temperature, humidity, cleanliness and air circulation rate. Therefore, it is very important that the system is thought out to the smallest detail and works properly.

    Design and its benefits

    Designing air conditioning (from an apartment to a trading floor) is a task that requires the relevant knowledge and experience from the performer. But as a result, you get a number of advantages:

    • effective organization of air exchange, regardless of the complexity of architectural objects;
    • optimal expenditure of funds for the organization of the system, as the designers will select the equipment taking into account the customer's budget and the task;
    • saving time, as the design allows you to clearly define the stages of work, their complexity and deadlines.

    A professional designer determines what equipment to purchase, where to install and how to use.

    System design steps

    Drawing up a detailed and thoughtful project involves several stages of work:

    • collection and analysis of drawings of all serviced premises, taking into account the arrangement of furniture and equipment;
    • determination of the speed of air flows and their distribution;
    • choice of the type of air conditioning, as well as blocks for air conditioners (internal, external);
    • taking into account the noise level of the system for equipping with silencers;
    • drawing up a project, making changes and designing a working design scheme.

    As a result, the customer receives a number of documents reflecting all the work performed, calculations and features of the system functioning:

    • general information about the project, accompanied by an explanatory note with detailed information about the system, equipment;
    • hydraulic calculation of cold supply;
    • automation scheme;
    • isometric schemes;
    • heat transfer calculations, etc.

    High-quality design ensures not only long and reliable operation of the entire system, but also a high level of safety for people in the premises.


    • "Efficient systems of heating, ventilation, air conditioning and heat supply"
    • Modern technologies in heating, ventilation and air conditioning, requirements for training specialists
    • R-32: new generation refrigerant for air conditioners and heat pumps
    • The relevance of the use of air conditioning systems with variable air flow
    • Acoustic calculation as a basis for designing a low-noise ventilation (air conditioning) system
    • Alternative air conditioning systems
    • Ventilation and air conditioning of medical institutions
    • Ventilation and air conditioning: industry problems
    • Water treatment for heating, ventilation, air conditioning and refrigeration systems
    • Selection of air velocity in the ducts of ventilation, air conditioning, aspiration and smoke protection systems
    • Choosing energy efficient air conditioning systems for office buildings
    • Natural air conditioning. Essay
    • The use of directing nozzles for air distribution in air conditioning systems
    • How to write a competent technical task for an air conditioning system for a server room and data center. Questions and answers
    • Classification of air conditioning systems
    • Hotel Ring Air Conditioning System
    • Comfortable climate in theaters as a result of the evolution of air conditioning technology
    • Air conditioning without drafts
    • Air conditioning in industrial buildings
    • Local air conditioning systems in office buildings
    • Reliability of clean room air conditioning systems
    • Experience in designing ventilation and air conditioning systems for high-rise buildings
    • Features of the design of heating and air conditioning systems in medical institutions
    • The use of antifreeze in heating, ventilation, air conditioning systems
    • Calculation of annual energy costs of ventilation and air conditioning systems
    • Calculation of air conditioning systems with central air conditioners and fan coil units
    • Design parameters of the outdoor climate for the design of refrigeration, ventilation and air conditioning systems
    • Efficient ventilation and air conditioning control

    Services of the company "Engineer"

    Our company designs air conditioning systems for all types of buildings: cottages, multi-storey buildings, industrial and commercial premises. We also audit ready-made developments, identify errors and help optimize projects.
    Design is carried out by a certified specialist. You will know exactly what equipment is best suited for your building, how much money and time it will take to create a system. This will allow you to rationally spend the allocated budget and navigate the stages of work.