ASSESSMENT OF THE EFFECTIVENESS OF ENERGY-SAVING CONSTRUCTIVE SOLUTIONS IN LOW-RISE RESIDENTIAL BUILDINGS: EVIDENCE FROM FERGANA REGION, UZBEKISTAN

Abstract

This article evaluates the effectiveness of energy-saving constructive solutions for low-rise residential buildings under the climatic and construction-market conditions of Fergana Region, Uzbekistan. The study combines statistical climate data, national construction statistics and a heat-loss calculation model for a representative 120 m² single-family low-rise house. Fergana is characterized by a dry steppe climate, an average annual temperature of approximately 15.3°C and annual precipitation of about 308 mm. Monthly climate data were used to calculate heating degree-days (HDD18 = 2,109 °C·day) and cooling degree-days (CDD24 = 342 °C·day). The evaluated constructive package includes external-wall insulation, roof/ceiling insulation, ground-floor thermal improvement, low-emissivity double glazing and reduction of uncontrolled air leakage. Results show that the integrated package can reduce delivered heating energy from 32,316 kWh/year to 12,826 kWh/year, corresponding to a 60.3% reduction. The analysis confirms that building-envelope measures are particularly relevant for Fergana, where low-rise housing is commonly developed by households and non-state actors. The paper concludes that energy-saving constructive solutions should be considered not only as engineering improvements but also as a practical regional strategy for reducing fuel demand, improving indoor thermal comfort and supporting Uzbekistan’s transition toward more energyefficient building standards