https://www.pistack.xyz/tags/energy-efficiency/ Recent content in Energy-Efficiency on Pi Stack Hugo en-us Fri, 05 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-05-self-hosted-smart-thermostat-controllers-opentherm-esphome-tasmota/ Fri, 05 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-05-self-hosted-smart-thermostat-controllers-opentherm-esphome-tasmota/ <h2 id="introduction">Introduction</h2> <p>Heating and cooling account for roughly 40-50% of household energy consumption in most climates. A well-configured smart thermostat can reduce HVAC energy use by 10-15% annually through better scheduling, occupancy detection, and weather-responsive adjustments. Commercial smart thermostats from Nest, Ecobee, and Honeywell cost $150-250 and lock your temperature data behind proprietary cloud services that can change their API policies at any time.</p>