{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T23:31:25Z","timestamp":1783467085711,"version":"3.55.0"},"reference-count":28,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,5,26]],"date-time":"2021-05-26T00:00:00Z","timestamp":1621987200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010663","name":"H2020 European Research Council","doi-asserted-by":"publisher","award":["680474"],"award-info":[{"award-number":["680474"]}],"id":[{"id":"10.13039\/100010663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Most existing residential buildings adopt one single-zone thermostat to control the heating of rooms with different thermal conditions. This solution often provides poor thermal comfort and inefficient use of energy. The current market proposes smart thermostats and thermostatic radiator valves (TRVs) as cheap and relatively easy-to-install retrofit solutions. These systems provide increased freedom of installation, due to the use of wireless communication; however, the uncertainty of the measured air temperature, considering the thermostat placement, could impact the final heating performance. This paper presents a sensing optimization approach for a home thermostat, in order to determine the optimal retrofit configuration to reduce the sensing uncertainty, thus achieving the required comfort level and minimizing the retrofit\u2019s payback period. The methodology was applied to a real case study\u2014a dwelling located in Italy. The measured data and a simulation model were used to create different retrofit scenarios. Among these, the optimal scenario was achieved through thermostat repositioning and a setpoint of 21 \u00b0C, without the use of TRVs. Such optimization provided an improvement of control performance due to sensor location, with consequent energy savings of 7% (compared to the baseline). The resulting payback period ranged from two and a half years to less than a year, depending on impact of the embedded smart thermostat algorithms.<\/jats:p>","DOI":"10.3390\/s21113685","type":"journal-article","created":{"date-parts":[[2021,5,26]],"date-time":"2021-05-26T21:56:44Z","timestamp":1622066204000},"page":"3685","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Temperature Sensing Optimization for Home Thermostat Retrofit"],"prefix":"10.3390","volume":"21","author":[{"given":"Federico","family":"Seri","sequence":"first","affiliation":[{"name":"College of Science and Engineering, National University of Ireland, Galway, Ireland"},{"name":"Informatics Research Unit for Sustainable Engineering (IRUSE), Galway, Ireland"},{"name":"Ryan Institute, National University of Ireland, Galway, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1700-3075","authenticated-orcid":false,"given":"Marco","family":"Arnesano","sequence":"additional","affiliation":[{"name":"Universit\u00e0 Telematica eCampus, 22060 Novedrate, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcus Martin","family":"Keane","sequence":"additional","affiliation":[{"name":"College of Science and Engineering, National University of Ireland, Galway, Ireland"},{"name":"Informatics Research Unit for Sustainable Engineering (IRUSE), Galway, Ireland"},{"name":"Ryan Institute, National University of Ireland, Galway, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gian Marco","family":"Revel","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering and Mathematical Sciences, Universit\u00e0 Politecnica delle Marche, 60131 Ancona, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,26]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Boosting Building Renovation: What potential and value for Europe? Study for the ITRE Committee","volume":"PE 587.326","author":"Artola","year":"2016","journal-title":"Dir. Gen. Intern. Policies Policy Dep. A Econ. Sci. Policy"},{"key":"ref_2","unstructured":"Esser, A., Dunne, A., Meeusen, T., Quaschning, S., and Denis, W. (2019). Comprehensive Study of Building Energy Renovation Activities and the Uptake of Nearly Zero-Energy Buildings in the EU Final Report."},{"key":"ref_3","unstructured":"IEA (2010). Energy Technology Perspectives."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"737","DOI":"10.1016\/j.enbuild.2007.02.001","article-title":"Comfort and energy use in buildings-Getting them right","volume":"39","author":"Nicol","year":"2007","journal-title":"Energy Build."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"014016","DOI":"10.1088\/1748-9326\/8\/1\/014016","article-title":"Global climate targets and future consumption level: An evaluation of the required GHG intensity (Environmental Research Letters)","volume":"8","author":"Girod","year":"2013","journal-title":"Environ. Res. Lett."},{"key":"ref_6","unstructured":"Taylor, P. (2021, May 25). Worldwide Trends in Energy Use and Efficiency, Available online: https:\/\/eneken.ieej.or.jp\/data\/pdf\/1707.pdf."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"507","DOI":"10.1016\/j.enpol.2008.09.051","article-title":"Modeling global residential sector energy demand for heating and air conditioning in the context of climate change","volume":"37","author":"Isaac","year":"2009","journal-title":"Energy Policy"},{"key":"ref_8","unstructured":"(2021, April 07). NEST. Available online: https:\/\/home.nest.com."},{"key":"ref_9","unstructured":"(2021, April 07). NETATMO. Available online: https:\/\/www.netatmo.com."},{"key":"ref_10","unstructured":"(2021, April 07). TADO. Available online: https:\/\/www.tado.com."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"889","DOI":"10.1016\/j.enbuild.2012.08.018","article-title":"Existing building retrofits: Methodology and state-of-the-art","volume":"55","author":"Ma","year":"2012","journal-title":"Energy Build."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1016\/j.enbuild.2015.01.001","article-title":"Impact of low investment strategies for space heating control: Application of thermostatic radiators valves to an old residential building","volume":"95","author":"Monetti","year":"2015","journal-title":"Energy Build."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"487","DOI":"10.1016\/j.enbuild.2017.06.070","article-title":"Actual energy savings from the use of thermostatic radiator valves in residential buildings\u2014Long term field evaluation","volume":"151","author":"Cholewa","year":"2017","journal-title":"Energy Build."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"338","DOI":"10.1016\/j.enbuild.2010.09.024","article-title":"Thermostat strategies impact on energy consumption in residential buildings","volume":"43","author":"Moon","year":"2011","journal-title":"Energy Build."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1254","DOI":"10.1016\/j.rser.2016.11.112","article-title":"Turning up the heat on obsolete thermostats: A simulation-based comparison of intelligent control approaches for residential heating systems","volume":"75","author":"Kasper","year":"2017","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Sachs, O., Tiefenbeck, V., Duvier, C., Qin, A., Cheney, K., Akers, C., and Roth, K. (2012). Field Evaluation of Programmable Thermostats.","DOI":"10.2172\/1059166"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"114526","DOI":"10.1016\/j.apenergy.2020.114526","article-title":"Conditions for a cost-effective application of smart thermostat systems in residential buildings","volume":"262","author":"Marian","year":"2020","journal-title":"Appl. Energy"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"110834","DOI":"10.1016\/j.enbuild.2021.110834","article-title":"Residential smart thermostat use: An exploration of thermostat programming, environmental attitudes, and the influence of smart controls on energy savings","volume":"238","author":"Stopps","year":"2021","journal-title":"Energy Build."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"342","DOI":"10.1016\/j.enbuild.2019.07.002","article-title":"An optimization platform based on coupled indoor environment and HVAC simulation and its application in optimal thermostat placement","volume":"199","author":"Tian","year":"2019","journal-title":"Energy Build."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/j.autcon.2016.05.012","article-title":"A tool for the optimal sensor placement to optimize temperature monitoring in large sports spaces","volume":"68","author":"Arnesano","year":"2016","journal-title":"Autom. Constr."},{"key":"ref_21","unstructured":"Lin, C., Federspiel, C.C., and Auslander, D.M. (2021, May 25). Multi-Sensor Single-Actuator Control of HVAC Systems. Available online: https:\/\/citeseerx.ist.psu.edu\/viewdoc\/download?doi=10.1.1.1037.3117&rep=rep1&type=pdf."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1016\/j.rser.2014.05.007","article-title":"A review of methods to match building energy simulation models to measured data","volume":"37","author":"Coakley","year":"2014","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_23","unstructured":"(2020, August 10). EnergyPlus. Available online: https:\/\/energyplus.net\/."},{"key":"ref_24","unstructured":"(2021, May 11). TRNSYS. Available online: http:\/\/www.trnsys.com."},{"key":"ref_25","unstructured":"(2021, April 07). IESVE. Available online: https:\/\/www.iesve.com\/."},{"key":"ref_26","unstructured":"CEN (2019). EN 16798-1:2019: Energy Performance of Buildings\u2014Ventilation for Buildings, CEN."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"109861","DOI":"10.1016\/j.rser.2020.109861","article-title":"On the assessment and control optimisation of demand response programs in residential buildings","volume":"127","author":"Pallonetto","year":"2020","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Rehm, T.W., Schneiders, T., Strohm, C., and Deimel, M. (2018, January 17\u201318). Smart Home Field Test\u2014Investigation of Heating Energy Savings in Residential Buildings. Proceedings of the 2018 7th International Energy and Sustainability Conference, Cologne, Germany.","DOI":"10.1109\/IESC.2018.8439985"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/11\/3685\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T06:07:52Z","timestamp":1760162872000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/11\/3685"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,26]]},"references-count":28,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2021,6]]}},"alternative-id":["s21113685"],"URL":"https:\/\/doi.org\/10.3390\/s21113685","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,5,26]]}}}