- $99.99Energy efficiency in HVACUdemy
- $4.99Energy Efficiency using Passive Solar DesignAmazon
- SAVE $42.00$98.00$140.00Energy Efficiency in Air TransportationAmazon
- $12.04Energy Efficiency Policies by Victor AndersonBetter World Books
- $6.49Energy Efficiency: Building a Clean, Secure EconomyAmazon
- $8.43Energy Efficiency : Building a Clean, Secure Economy by James L. SweeneyBetter World Books
- SAVE $28.74$21.25$49.99Energy Efficiency and Historic Buildings: Insulating Timber-framed Walls (Historic England Guidance)Amazon
- SALEJoy Pebble Portable Air Conditioner, 10000 BTU for Room up to 450 sq. ft, Portable AC with Dehumidifier & Fan, 2 Fan Speeds, 24H Timer, Remote Control, Energy EfficiencyAmazon・Sale
- $16.70Energy-Efficiency Upgrades : Principles, Details, Examples by Friedemann, Schulz, Christina, Richarz, Clemens ZeitlerBetter World Books
- $2.99Energy Efficiency: How to Use Less Energy in your Home and Save Money on ElectricityAmazon
- $36.95KGORGE Energy Efficiency Blackout Curtain Liners for 95 inch Long Curtains, White, 2 Panels, 50 inch Wide x 92 inch LongAmazon
- $111.00Electrical Energy Efficiency: Technologies and ApplicationsAmazon
- $2.99Home Automation Meets Energy Efficiency: How to Use Home Automation to Save Money and Improve Your Home’s Energy Efficiency & Air QualityAmazon
- $150.00NEON SIGN MAKING PARTY (Energy Efficiency Chat)Viator
- SAVE $41.01$118.99$160.00Megatrends for Energy Efficiency and Renewable EnergyAmazon
- $9.99Smart Grids: AI-Enabled Solutions for Energy EfficiencyAmazon
- $10.09Dictionary of Energy Efficiency Technologies by Michael Frank HordeskiBetter World Books
- $9.42New Technologies for Energy Efficiency by Michael Frank HordeskiBetter World Books
- $41.99WODFAMY Rod Pocket Energy Efficiency Thermal Insulated Room Darkening Curtains Lush Decor Prima Velvet Curtains Room Darkening Window Panel Set 52Wx108L Inch 2 Pcs Old Golden YellowAmazon
- $122.06The Smart Grid: Enabling Energy Efficiency and Demand ResponseAmazon
- SAVE $62.95$117.04$179.99Modernization of Electric Power Systems: Energy Efficiency and Power QualityAmazon
- $14.80One Idea for Physical Therapy: Motion smoothness and energy efficiencyAmazon
- SAVE $33.08$136.91$169.99Green Internet of Things (IoT): Energy Efficiency Perspective (Wireless Networks)Amazon
- SAVE $45.00$105.00$150.00Introduction to Industrial Energy Efficiency: Energy Auditing, Energy Management, and Policy IssuesAmazon
- $34.79Building with Structural Insulated Panels: Strength & Energy Efficiency Through Structural Panel ConstructionAmazon
- SAVE $19.62$80.37$99.99Advances in Air Conditioning Technologies: Improving Energy Efficiency (Green Energy and Technology)Amazon
- SAVE $12.00$67.99$79.99PELONIS 16" Oscillating Pedestal Stand Up Fan | Adjustable Height | Ultra Quiet DC Motor | Remote Control | 12 Speed | 12-Hour Timer | High Energy Efficiency | for Bedroom Home Office Use | WhiteAmazon
- SAVE $36.62$153.38$190.00Energy-Smart Buildings: Design, Construction and Monitoring of Buildings for Improved Energy EfficiencyAmazon
- $22.22The Smart Grid : Enabling Energy Efficiency and Demand Response by Clark W. GellingsBetter World Books
- $3.98Renewable Energy and Energy Efficiency in China : Current Status and Prospects for 2020 by Lisa MastnyBetter World Books
- $94.84Single 12-LED Underwater Spot Light 4 Fountain Fish Pond 1.6W Energy EfficiencyAmazon
- $19.99GIGALUMI Solar Pathway Lights, Warm White, Weather Resistant, Effortless Energy Efficiency, Easy Assembly, 20-InchAmazon
- $12.99Nvidia's Blackwell Super Chip: Revolutionizing AI: Advancing Trillion-Parameter AI Models with Energy EfficiencyAmazon
- $5.99Nvidia's Blackwell Super Chip: Revolutionizing AI: Advancing Trillion-Parameter AI Models with Energy EfficiencyAmazon
- $27.1720 in. 3 Speeds Box Fan in White with Save-Smart Technology for Energy Efficiency, Carry HandleThe Home Depot
- $4.99DIY: Simple Passive Solar House: Design for 90% Energy Efficiency to Save Money on Heating and CoolingAmazon
- $93.95RYB HOME Noise Absorbing Blackout Energy Efficiency 3-in-1 Curtain Set with Detachable Felf Liner Full Privacy Wall Divider Drapes for Living Room Patio Door, Burgundy Red, W 52 x L 108, 2 PcsAmazon
- SAVE $17.07$42.88$59.95Super House: Design Your Dream Home for Super Energy Efficiency, Total Comfort, Dazzling Beauty, Awesome Strength, and EconomyAmazon
- $89.95RYB HOME Noise Reduce Blackout Energy Efficiency 3-in-1 Set Solid Window Curtains for Bedroom Living Room Wall Panels Patio Door, 52 inch Wide x 108 inch Long, Stone Blue, 2 PcsAmazon
- $11.50Pc Pencil Pleat Curtain Thermal Insulated Window Treatment Energy Efficiency Curtain Rod Pocket Blackout Curtain For Living RoomSHEIN
- $41.01Inground Pool Light, Wall Mounted Bright Lighting LED Pool Light Modern Energy Efficiency for Hotel (Warm White 12W)Amazon
- $117.09Hayward VVX3000CKITWH Pool Vac or Navigator V-Flex Variable Vane Turbine Upgrade Kit Improves Large Debris Cleaning and Energy EfficiencyAmazon
- $8.90m USB Extension Cable With High Speed And Energy Efficiency For Long Distance Extension Suitable For Wireless Network Adapters Network Adapters PrinteSHEIN
- SAVE $30.50$59.49$89.99RELXTIME Insulated Inflatable Hot Tub Thermal Cover - for 57 inch Square Inflatable Hot Tub, Weather-Resistant, Waterproof, Energy Efficiency Saving, Square (57 Inch)Amazon
- SAVE $1.69$15.26$16.95RYB HOME Small Curtains Blackout - Privacy Energy Efficiency Mini Curtains for Kids Bedroom RV Camper Windows Trailer Bathroom Kitchen Cabinet Window Tiers, W 29 x L 24, Peach Blush, 2 PanelsAmazon
- $62.99Phating Inherent Flame Retardant Blackout Curtains Drapes Meet NFPA701 Test, Elderly Home,Set of Two,Energy Efficiency Window Curtains for Classroom(2 Panels,Grey, 52X63inch)Amazon
- SAVE $1.69$15.26$16.95RYB HOME Blackout Curtains Small Window Decor Energy Efficiency Drapes for Kitchen Bedroom Basement Bath Tub Cafe, 29 inch Width x 36 inch Length, Marine Blue, 2 PanelsAmazon
- $2.10G W Halogen Bulb V Kitchen Hood Bulb Warm White K For Bedroom Bathroom Cabinet Living And Dining Room Pack Energy Efficiency Class GSHEIN
- SAVE $5.10$27.89$32.99Intermatic FF5M 5-Minute Spring Loaded Wall Timer SPST No Hold - Enhance Energy Efficiency with Universal Compatibility - Automatic Timer for Effortless Control, Brushed Metal FinishAmazon
- $45.95RYB HOME Camel Beige Velvet Curtains & Drapes - Energy Efficiency Soft Window Curtains Half Blackout Curtains for Bedroom Living Room Backdrop Patio Door, 52 Width x 84 inch Length, 1 PairAmazon
- $23.95RYB HOME Blackout Curtains Grey - Thermal Insulated Energy Efficiency Window Curtains for Living Room Bedroom Home Office Dining Room Divider Partition, W 70 x L 84, Gray, 1 PanelAmazon
- $17.95H.VERSAILTEX 100% Blackout Curtains Thermal Insulated Full Blackout Curtains for Living Room Energy Efficiency Window Draperies for Bedroom with Black Liners 1 Panel, 52x63 Inch, Pumice StoneAmazon
- $9.99KarlKers Solar Angle Guide Solar Tracker Tool Solar Angle Adjust Meter Solar Panel Accessories Improve Solar Energy Efficiency for Portable Solar Panel Foldable Solar Panels Sun Angle Finder GuideAmazon
- $39.99Rutterllow 100% Blackout Curtains for Bedroom 52Wx72L Inch, Energy Efficiency Full Shading Window Curtain Panels, Heat and Light Blocking Soundproof Draperies for Living Room/Cafe (1 Pair, Yellow)Amazon
- $37.95NICETOWN Complete 100% Blackout Curtains, Thermal Insulated & Energy Efficiency Window Draperies with Black Liner, Noise Reducing Short Curtains for Kids Room (Brown, 52-inch W by 63-inch L, 2 Panels)Amazon
- SAVE $2.39$31.56$33.95NICETOWN 100% Blackout Short Curtains with Black Liners, Solid Thermal Insulated Full Blackout 2-Layer Lined Drapes, Energy Efficiency Window Draperies for Bedroom (2 Panels, 37" W by 63" L, Grey)Amazon
- SAVE $2.29$20.66$22.95RYB HOME Bedroom Curtains Blackout - Light Block Energy Efficiency Small Window Treatment Drapes for Kitchen Dining Baby Nursery Morden Decor, W 42 x L 54 inch, Greyish Purple, 2 PanelsAmazon
- SAVE $1.59$14.36$15.95RYB HOME Grey Blackout Curtains - Thermal Insulated Noise Reducing Energy Efficiency Small Window Decor for Kitchen Bedroom Bathroom, 42 inches Wide x 45 inches Long, Gray, 1 PairAmazon
- $4.99Your Guide to Home Insulation Improvements for Energy Efficiency and Savings: DIY Instructions for Installing Attic, Wall and Floor Insulation to Lower Bills, Increase Comfort and Get the MostAmazon
- $39.99XWZO Total Blackout Curtains 54 Inches Long - Double Layer Full Room Darkening & Energy Efficiency Grommet Window Panels with Tiebacks, Light Grey, W42 x L54, Set of 2Amazon