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Guide B1 Heating (2016)
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Guide B1 Heating (2016)

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Guide B provides guidance on the practical design of heating, ventilation and air conditioning systems and is divided into six sections which are published separately:

The full set is available at a discounted price here: Guide B (full set)

Guide B1: Heating deals with the selection, design, commissioning, operation and management of most types of heating systems in buildings. It deals specifically with non-domestic buildings, though much of the contents will apply to domestic communal heating. Such systems provide space (including ventilation) heating and/or hot water services and installations such as swimming pools. Virtually every building (outside the tropics), contains a heating system. In most cases its primary purpose is to produce acceptable levels of thermal comfort – paramount for the health and wellbeing of building occupants and provide domestic hot water – or to protect the building fabric or its contents.

Topics covered include:

  • Strategic design decisions
    • Purposes of heating systems
    • External design conditions
    • Site related issues
    • Interaction with building design, fabric, services and facilities
    • Occupancy
    • UK regulatory requirements
    • Energy performance of building regulations outside the UK
    • Environmental performance targets
    • Economic considerations
    • Future requirements
  • Design criteria
    • Internal design conditions
    • Design criteria for human comfort and well being
    • Design criteria for other than human comfort
    • Environmental performance target
    • Part L Building Regulations 2013 (England)
    • Energy and CO2 emissions benchmarks for existing buildings
    • NOx, SOx, particulates and greenhouse gases other than CO2
    • Environmental assessment schemes
  • Choice of system
    • General
    • System classification
    • Choice of centralised or decentralised systems
    • Particular applications
    • Choice of fuel or energy source
    • Choice of heat generator
    • Choice of heat emitters
    • Choice of distribution medium
    • Choice of domestic hot water system
  • Heating load calculations and sizing methodology
    • General
    • Calculation principles
    • Room design heating load
    • Mechanical ventilation heat loss
    • Domestic hot water
    • Distribution losses
    • Heat generator peak heating load
    • Design margins
    • Choice of number and duties of heat generators
  • Energy sources
    • General
    • Factors affecting choice of energy source
    • Gaseous fuels
    • Liquid fuels
    • Solid fuels
    • Electricity
    • Solar source
    • Handling and storage of fuels and regulations
  • Heat generators
    • Choice of heat source
    • Boilers
    • Gas-fired boilers
    • Oil-fired boilers
    • Solid fuel boilers (general)
    • Solid fuel boilers (biomass)
    • Steam boilers
    • Combustion of fuels
    • Heat pumps
    • Combined heat and power
    • Solar water heating collectors
    • Chimneys and flues
    • Corrosion in boilers, flues and chimneys
  • Hydronic systems
    • General
    • Choice of flow and return water temperatures
    • General arrangement of LTHW systems
    • Secondary circuit(s)
    • Primary circuit
    • Interface between primary and secondary circuits
    • General arrangement of MTHW and HTHW systems
    • Integration of renewable/low carbon heat generators
    • Heat output rate of heat emitters
  • Steam systems
    • General
    • System design
    • Distribution
    • Condensate
    • Guidance and standards
  • Air systems
    • General
    • Heat sources
    • Distribution
    • Heating combined with air conditioning
    • Controls
    • Other standards and guidance
  • Unitary systems
    • General
    • Indirect gas and oilfired heaters
    • Direct electric heaters
    • Electric underfloor heating
    • Standalone heat pumps
    • Radiant systems characteristics
    • Convective heating characteristics
    • Controls
  • Domestic hot water systems
    • General
    • Classification of DHW systems
    • Regulations relevant to DHW systems
    • Generic dhw systems
    • Choice of dhw system
    • DHW demand and energy consumption
    • Solar hot water heating
    • Sizing of dhw systems
  • Connecting to heat networks
    • Existing UK heat network performance
    • Key design points for heat networks
    • Networkconsumer interface
    • Implications for design of building heating system
  • Operation, maintenance and energy management
    • ‘Commissionability’ and ‘maintainability’Life cycle issues
    • Construction (Design and Management) Regulations (UK)
    • Operation and maintenance manuals
    • Log books
    • Energy management, monitoring and targeting
  • Hydronic system design

Corrigenda and reprints

  • November 2016: makes corrections to pages: 1-27, 1-30, 1-71, 1-89, 1-90, 1-99, 1-100, 1-106, 1-119 and 1-129
  • May 2018: makes corrections to pages: 1-26, 1-37, 1-48, 1-49, 1-51, 1-74, 1-76, 1-153 and 1-163
  • June 2019: makes amendments to page 1-147


Guide B1 Steering Committee: Mike Campbell (Chair), Paul Barnard, Robin Curtis, Richard Davies, Tony Day, David Hughes, Simon Mitchell, David Palmer, Chris Parsloe, Martin Ratcliffe, Martin Wilkinson, Paul Woods

Referees: Richard Brailsford, Peter Clackett, Will Pitt

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