About QFD / House of Quality

Quality Function Deployment (QFD) and the „House of Quality“ provide a mapping of customer needs to specifications and vice versa. They provide a summary of how specifications are derived based on market needs and competitive environment.


Summarize target product profile


A table resembling the shape of a house is returned. The table summarizes all the information collected during requirements analysis and benchmarking.

How to insert the QFD / House of Quality component

The QFD / House of Quality template can be used to start new projects or to extend existing projects. Please read chapter "The Templates" to learn more about how to start new projects.

In order to extend your project:

  1. 1
    Activate the Home Ribbon Home Ribbon
  2. 2
    Click the Add Tool button on the Home ribbon
  3. 3
    Click the QFD / House of Quality icon in the template catalog

In order to find the QFD / House of Quality component within the template catalog, you have to choose a cycle name on the first line of the screen and a phase name at the left of the screen. The QFD / House of Quality component is located in this cycle/phase combinations:


QFD 1 House of Quality of VOC to CTQ. Includes Kano Analysis, VOC and CTQ Benchmarking, and Difficulty Analysis.


The House of Quality Worksheet

The House of Quality worksheet is the main worksheet of the QFD1 component. It shows the QFD1 matrix together with benchmarking tables and the inter relationship matrix of the CTQs / Functions.

  1. 1
    VOC - Voice of the Customer: hierarchical structure of system and customer requirements. Collect all requirements based on customer benefit. Build a structure of groups and sub-items.
  2. 2
    CTQ / Functional Requirements
    CTQ - critical to quality. This is the hierarchical structure of product functions and critical technical requirements. Collect all technical requirements defining the quality of the product functions. If possible, place technical requirements inside a product function. Use and to change functions into CTQ or vice versa. Use ConstraintConstraint on technical specifications that cannot be optimized, e.g. technical standards.
  3. 3
    QFD Matrix
    Does improving the Functional Requirement help to better satisfy the VOC need?
  4. 4
    Importance rating for VOC. Created by one of the available prioritization methods, e.g. AHP.
  5. 5
    CTQ Importance
    Importance ratings for CTQs and Functions calculated from VOC Importance and QFD 1 Matrix.
  6. 6
    VOC Benchmarking
    How good does the listed product (column) meet the customer requirement (row)?
  7. 7
    VOC Benchmarking Chart
    Line graphs of the VOC Benchmarking performances over a bar graph showing VOC importance. Requirements with a long bar and line graphs at the right edge should be considered first.
  8. 8
    VOC Quality Plan
    This table is an add-on to the benchmarking table. It computes a suggested target value for your new product depending on current performance, competitor performance, and importance of each requirement.
  9. 9
    This table contains specifications for functions and CTQs, e.g. unit and targeted value.
  10. 10
    CTQ Benchmarking
    Enter all measurements taken from the real products.
  11. 11
    CTQ Benchmarking Chart
    Chart showing CTQ Benchmarking as lines and CTQ Importance as bars.
  12. 12
    The roof of the House of Quality documents conflicts and synergies when improving CTQs.


More Worksheets

This editor shows the VOC in a single view. It provides an easy way for editing customer requirements.

CTQ Causal Loop Diagram
VOC Pareto
CTQ Pareto
Benchmarking (Customer)
Benchmarking (Technical)

Need more information? Open questions? Please let us know.