Photo credits

Photos come from Wikimedia Commons under free licenses. We resized and cropped them for the site.

Homepage: Modern living room with stylish furniture and a view of the outdoors in a cozy apartment setting by Shixart1985, CC BY 2.0
Drafts & Sealing: Cozy living room with a gray sofa by Shixart1985, CC BY 2.0
Heating & Cooling: Setting the temperature on a digital thermostat while standing by a wall in the home during an indoor activity by Shixart1985, CC BY 2.0
Insulation: Insulating attic (49525467656) by USFWS Mountain Prairie, Public domain
Water Heating: Shower head for bath tube by EzekielFokam, CC BY-SA 4.0
Appliances & Electricity: LED bulbs by Geoffrey.landis at English Wikipedia, CC BY 3.0
Kitchen: Kettle boiling on gas stove (385314458) by troykelly from Brisbane, Australia, CC BY 2.0
Laundry: White laundry on a drying rack by W.carter, CC BY-SA 4.0
Heating & Cooling: Electric Ceramic Space Heater (32569563908) by Tony Webster from Minneapolis, Minnesota, United States, CC BY 2.0
Heating & Cooling: Cozy cabin living room with wooden interior by Shixart1985, CC BY 2.0
Drafts & Sealing: Cozy living room setup with a warm sofa, coffee cup, and an open book in a softly lit environment by Shixart1985, CC BY 2.0
Appliances & Electricity: LED-E27-Light-Bulb-1134 by Loadmaster (David R. Tribble), CC BY-SA 4.0
Heating & Cooling: Person holds smart thermostat displaying room temperature inside a home by Shixart1985, CC BY 2.0
Heating & Cooling: Woman adjusts smart home thermostat while holding smartphone in home setting by Shixart1985, CC BY 2.0
Heating & Cooling: Radiator-250558 1280 by ri, CC0
Heating & Cooling: Heat radiator in Switzerland by Tiia Monto, CC BY-SA 3.0
Heating & Cooling: Electric Baseboard Heater by Tony Webster, CC BY 2.0
Heating & Cooling: HVAC air filter.webp by Wikideas1, CC0
Heating & Cooling: Cannon Renewal Project - August 2017 (37702509982) by USCapitol from Washington, D.C., United States of America, Public domain
Heating & Cooling: New ceiling fan, sitting room, home, Hoxton, Shoreditch, London, UK - Flickr - gruntzooki by Cory Doctorow from Beautiful Downtown Burbank, USA, CC BY-SA 4.0
Heating & Cooling: Frigidaire Window Air Conditioner - interior by FanFan61618, CC BY-SA 2.0
Heating & Cooling: Woman sits at desk working on laptop in home office by Shixart1985, CC BY 2.0
Heating & Cooling: Woman arranging colorful blanket on sofa in cozy living room during daytime by Shixart1985, CC BY 2.0
Heating & Cooling: Bed in Seattle hotel by Liz Lawley, CC BY-SA 2.0
Heating & Cooling: Basement (7029986093) by Martin Cathrae from Charlottetown, PE, Canada, CC BY-SA 2.0
Heating & Cooling: Thermostatic Radiator Valve by T.Voekler, CC BY-SA 3.0
Heating & Cooling: Fan-heater-2006 by Borislav Bonev (bg.wikipedia), CC BY 2.5
Water Heating: Blisswood-Room-WritersCabin-HotTub by BlisswoodB&B, CC BY-SA 4.0
Heating & Cooling: 2021-09-10 13 48 38 The interior side of a newly installed metal garage door for a single car garage on a house along Tranquility Court in the Franklin Farm section of Oak Hill, Fairfax County, Virginia by Famartin, CC BY-SA 4.0
Insulation: Heat Cables on Roof - Ice Dam Prevention (50450735118) by Tony Webster, CC BY 2.0
Appliances & Electricity: This dog is "comfy"- 2013-12-27 10-51 by Austurges, CC BY-SA 3.0
Appliances & Electricity: Suzuki Grand Vitara with block heater by Ilya Plekhanov, CC BY-SA 3.0