Heatloss Calculation Online

Rough Estimate: Whole House Methode


This is a widely used and relatively quick method, but the result is not very accurate. The printer friendly spreadsheet is here:
Whole House calc v1.1.xlsx

MCS compilant method


If you want to apply for BUS Grant to install a biomass heating system, you will need a heatloss calculation to determine the capacity of the required heat source (boiler/stove).
If you fill in this form, I will complete it for you. The calculation will not be just informative, but it will be MCS compilant.
Alternatively please fill in the printer friendly spreadsheet version, the Heatloss data 4.1 blank.xlsx file.
Please note this is a free service. But filling in the form may be time consuming.

    Name:

    Address:

    City:

    Postcode:

    Phone:

    Email:(required)

    Altitude above sea level:

    Exposed location:

    Select property age:

    Room No.1

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 1 (ground floor only)

    Floor type and insulation standard?

    Ceiling 1 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 1

    Nominal adjacent temperature °C

    Room No.2

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 2 (ground floor only)

    Floor type and insulation standard?

    Ceiling 2 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 2

    Nominal adjacent temperature °C

    Room No.3

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 3 (ground floor only)

    Floor type and insulation standard?

    Ceiling 3 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 3

    Nominal adjacent temperature °C

    Room No.4

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 4 (ground floor only)

    Floor type and insulation standard?

    Ceiling 4 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 4

    Nominal adjacent temperature °C

    Room No.5

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 5 (ground floor only)

    Floor type and insulation standard?

    Ceiling 5 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 5

    Nominal adjacent temperature °C

    Room No.6

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 6 (ground floor only)

    Floor type and insulation standard?

    Ceiling 6 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 6

    Nominal adjacent temperature °C

    Room No.7

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 7 (ground floor only)

    Floor type and insulation standard?

    Ceiling 7 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 7

    Nominal adjacent temperature °C

    Room No.8

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 8 (ground floor only)

    Floor type and insulation standard?

    Ceiling 8 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 8

    Nominal adjacent temperature °C

    Room No.9

    Description of room:

    Length m(avg):

    Width m(avg):

    Heigth m(avg):

    Is open flue present?:

    Is throat restrictor fitted in flue?:

    Total ext wall length m:

    External wall type if it is solid:

    External wall type if it is cavity wall:

    Window/door 1

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 2

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Window/door 3

    Number of winows/doors of this kind:

    Length m (each):

    Height m (each):

    Widow/door type:

    Floor 9 (ground floor only)

    Floor type and insulation standard?

    Ceiling 9 (top floor only)

    Is the ceiling vaulted?

    Insulation standard?

    Internal walls 9

    Nominal adjacent temperature °C

    Your comment, message

    Please type the characters
    captcha

    HETAS
    MCS certificated
    NAPIT
    RECC
    Home Improvement Protection
    Skip to toolbar