PURCHASE DECISION ANALYSIS | ILLUSTRATION 02
How Households Choose a Replacement Heating System
Following a live household decision across Emilia-Romagna, Italy.
THE SITUATION A residential heating and energy-services provider needed to understand what happens between the first failure or replacement concern and the final system choice. Retrospective interviews alone risked losing the sequence of installer advice, household discussion, property constraints and changing quotes.
The business decision
The provider needed to decide when to intervene, which evidence households require, how installers shape the shortlist and where its offer should adapt to property and installation conditions.
18
active household decisions
6
installer debriefs
21 DAYS
live diary window
7 WEEKS
indicative delivery
Why location matters
Emilia-Romagna is part of the research design because property type, existing heating configuration, installer availability and access to current incentives can change the practical choice. The findings would describe the recruited decisions in this setting, not all Italian households.
STUDY NOTE All participant counts, findings and recommendations in this illustration are hypothetical. They show how the service could be applied and are not presented as client outcomes.
02 | LIVE REPLACEMENT WINDOW
Recruit decisions while they are still moving
Households are selected because a replacement is active, not because they can remember a purchase from several years ago.
Participant and outreach design
GROUP | TARGET | ENTRY CONDITION | OUTREACH ROUTE |
|---|---|---|---|
Households | 18 live decisions | Failure, ageing system or planned replacement; first quote not yet finally accepted | Local recruitment partners, homeowner communities and neutral invitations through approved installer contacts |
Installers | 6 debriefs | Recently advised or quoted for a participating decision or closely matched property | Direct professional outreach with verification of role and recent installation experience |
What participants capture
TRIGGER
Failure, concern or replacement deadline
PROPERTY
Photos and constraints relevant to installation
QUOTES
Options, exclusions, timing and changing costs
CONVERSATIONS
Installer advice and household discussion
COMMITMENT
Final choice, delay or next unresolved step
Fieldwork controls
NEUTRAL RECRUITMENT Installer referrals can identify a live decision, but participation and interviewing remain separate from the sales conversation.
HOUSEHOLD VOICES Joint and individual inputs are captured when more than one person influences cost, disruption or comfort preferences.
EVENT TIMESTAMPS Diary entries are anchored to actual quotes, visits, breakdowns and discussions. Missing evidence remains visible.
INSTALLER SEPARATION Installer accounts are analysed separately before they are compared with the household trace.
03 | DECISION DIARY METHOD
Observe the decision before explaining it
A prospective diary preserves changes that a single retrospective interview may compress into one tidy answer.
A qualitative fieldwork sequence
01 ENTRY INTERVIEW
Map the trigger, property, household roles and initial options.
02 MOMENT CAPTURE
Collect short entries after quotes, visits and household discussions.
03 EVIDENCE UPLOAD
Review permissioned quotes, photographs and installer messages.
04 CHANGE TRACE
Mark what entered, strengthened, weakened or delayed the choice.
05 JOINT RECONSTRUCTION
Resolve different household accounts after the decision window.
06 INSTALLER CONTRAST
Compare household interpretation with installer reasoning.
Sample research questions
AFTER THE FIRST BREAKDOWN OR CONCERN What made replacement feel necessary now, and which options did the household initially believe were realistic?
IMMEDIATELY AFTER THE FIRST INSTALLER VISIT What did the installer rule in or out, what evidence supported that view and how did the shortlist change?
WHEN THE HOUSEHOLD COMPARED QUOTES Which difference created the most discussion: installed cost, disruption, operating expectations, incentive access, service support or something else?
AT THE POINT OF COMMITMENT What condition finally made one option acceptable, and what nearly prevented the decision?
IF THE DECISION WAS DELAYED Which unresolved fact, permission, installer constraint or financial condition must change before the household can proceed?
No survey is added to this scope. Eighteen live decisions support detailed pathway comparison but not population estimates.
04 | ILLUSTRATIVE DECISION PATTERN
Translate the live trace into intervention points
The conclusion shows where information, installer support and offer design can change a decision without treating every barrier as a message problem.
Illustrative outcome pathways
SELECTED HEAT PUMP | 7
SELECTED ANOTHER SYSTEM | 6
DECISION DELAYED | 5
PRIMARY PATH
The property route was workable, installer confidence was high and the household could connect upfront disruption with an acceptable long-term case.
PRIMARY PATH
A familiar replacement path, lower immediate disruption or clearer installer responsibility outweighed the appeal of a larger system change.
PRIMARY PATH
Quote uncertainty, unclear incentive timing, property work or disagreement inside the household left the final commitment unresolved.
How the provider could respond
SCREEN PROPERTY CONDITIONS EARLY Help households identify installation constraints before an unsuitable option becomes the reference point.
EQUIP INSTALLERS WITH COMPARABLE EVIDENCE Give installers a consistent way to explain disruption, responsibilities, available support and unresolved assumptions.
SUPPORT THE HOUSEHOLD DECISION Provide material for the people who control comfort, budget and disruption, not only the person who requested the quote.
CREATE A DELAY RECOVERY PATH Separate decisions waiting for evidence from those that are not currently viable.
Decision-ready outputs
Live decision pathways, household and installer influence map, property and offer constraint register, intervention moments, evidence requirements and a seven-week decision workshop.
Contact Us
UNDERSTAND THE REPLACEMENT DECISION
Tell us which heating choice, territory and household conditions matter. We will design the live recruit, diary window and installer evidence around that decision.