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Programmable Thermostats
User Experience Assessment




 Dhawal Mujumdar | Daniel Perry | Becky Hurwitz
Project Background
Problem
People cannot program their thermostats

Reason
People’s inability to properly program is due to
poor usability of thermostats

Our team conducted usability research to assess
user attitudes and behaviors when setting
programmable thermostats
Usability Research Methods

    Qualitative Interviews

    An Online National Survey

    Usability Tests
Qualitative Interviews




Performed 6 semi-structured qualitative interviews to establish a
context for how social and environmental conditions affected usage
behavior
Qualitative Interviews




               I don’t touch it
               because I don’t
               understand it
Qualitative Interviews




               I don’t touch it
               because I don’t
               understand it
Qualitative Interviews




Interviews were recorded and pertinent quotes and observations
were organized into an affinity diagram
Survey




We prepared a fifteen-question survey, which covered a range of
questions to determine behavior ranging from “who purchased the
thermostat” to temperature settings for heating and cooling
Survey




81 respondents from 10 states and 57 cities participated in a
national survey
Usability Tests




Usability tests were conducted on two different interfaces
with six different users. The two thermostats were selected to
take into account both button based and touchscreen
interfaces
Usability Tests

           The thermostats were
           placed on a wooden plank
           on nails at approximately
           4.5 feet from the floor. The
           thermostats were taken to
           users’ homes and set up
           next to their existing
           thermostat to accurately
           replicate the use conditions
           of their actual thermostat,
           including lighting and
           accessibility
Usability Tests



Asked each participant to
perform a set of four tasks
on each of the thermostats
Usability Findings
Users cannot set thermostats efficiently

Distinctions between heating and cooling are
confusing

Thermostat labels are confusing

Users are confused by product ergonomics
Recommendations
Too many buttons and modes are unnecessary

Provide relevant feedback for any action
performed by users on thermostats

Create standards for labeling

If a thermostat has a cover, make it easy to remove

Provide clearly legible instructions/ tips on the
thermostat
Thank You!

Dhawal Mujumdar | dhawal@ischool.berkeley.edu
Daniel Perry    | dperry@ischool.berkeley.edu
Becky Hurwitz    | becky@ischool.berkeley.edu

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Programmable Thermostats User Experience Assessment

  • 1. Programmable Thermostats User Experience Assessment Dhawal Mujumdar | Daniel Perry | Becky Hurwitz
  • 2. Project Background Problem People cannot program their thermostats Reason People’s inability to properly program is due to poor usability of thermostats Our team conducted usability research to assess user attitudes and behaviors when setting programmable thermostats
  • 3. Usability Research Methods  Qualitative Interviews  An Online National Survey  Usability Tests
  • 4. Qualitative Interviews Performed 6 semi-structured qualitative interviews to establish a context for how social and environmental conditions affected usage behavior
  • 5. Qualitative Interviews I don’t touch it because I don’t understand it
  • 6. Qualitative Interviews I don’t touch it because I don’t understand it
  • 7. Qualitative Interviews Interviews were recorded and pertinent quotes and observations were organized into an affinity diagram
  • 8. Survey We prepared a fifteen-question survey, which covered a range of questions to determine behavior ranging from “who purchased the thermostat” to temperature settings for heating and cooling
  • 9. Survey 81 respondents from 10 states and 57 cities participated in a national survey
  • 10. Usability Tests Usability tests were conducted on two different interfaces with six different users. The two thermostats were selected to take into account both button based and touchscreen interfaces
  • 11. Usability Tests The thermostats were placed on a wooden plank on nails at approximately 4.5 feet from the floor. The thermostats were taken to users’ homes and set up next to their existing thermostat to accurately replicate the use conditions of their actual thermostat, including lighting and accessibility
  • 12. Usability Tests Asked each participant to perform a set of four tasks on each of the thermostats
  • 13. Usability Findings Users cannot set thermostats efficiently Distinctions between heating and cooling are confusing Thermostat labels are confusing Users are confused by product ergonomics
  • 14. Recommendations Too many buttons and modes are unnecessary Provide relevant feedback for any action performed by users on thermostats Create standards for labeling If a thermostat has a cover, make it easy to remove Provide clearly legible instructions/ tips on the thermostat
  • 15. Thank You! Dhawal Mujumdar | dhawal@ischool.berkeley.edu Daniel Perry | dperry@ischool.berkeley.edu Becky Hurwitz | becky@ischool.berkeley.edu