“Create a House of Quality for an electric kettle. Customer needs are boils quickly with weight 5, quiet operation with weight 4, and easy to clean with weight 4. Engineering characteristics are heating element wattage, lid opening width and wall insulation. Show strong relationships between quick boiling and wattage, quiet operation and insulation, and easy cleaning and lid width; show a moderate relationship between quiet operation and wattage and a weak relationship between quick boiling and insulation. Mark wattage and insulation as negatively correlated.”
看懂背後的決策。
Give more influence to needs customers value most.
Review the negative relationship between speed and insulation.
Turn the highest-priority technical characteristics into measurable goals.
Use when a product team needs to connect customer language to a manageable set of engineering choices.
常見問題
Why are customer needs weighted?
Weights make the matrix reflect relative customer importance instead of treating every request as equal.
What is a QFD roof?
The roof shows positive or negative correlations between engineering characteristics, making design trade-offs visible.
Can QFD be used for a small product?
Yes. A concise matrix is useful when it focuses on the few needs and technical choices driving the decision.