Welcome to the Appliances Lesson
This lesson is one of the most impactful you'll complete in this course. Why? Because appliances are a major source of residential energy use, and unlike home insulation or heating systems, you have direct control over them every day. Your choices in purchasing and using appliances can significantly lower your energy bills and reduce your environmental footprint.
What We Will Cover
In this module, we will explore the basic operating principles and energy drivers of the major "big-ticket" appliances in your home:
- Refrigerators
- Clothes Washers and Dryers
- Dishwashers and Cooking Appliances
(Note: Water heaters are also a major energy user, but we will cover those in depth in Lesson 7.)
We won't just look at how to use these appliances; we'll examine how they work and what governs their energy consumption. Understanding the mechanics behind the machine is the first step to using it efficiently.
Key Skills: Making Smart Purchasing Decisions
When you are ready to buy your own appliances, how will you choose the best model? We will teach you how to:
- Read EnergyGuide Labels: Learn to interpret the yellow labels on appliances that estimate annual energy use and operating costs.
- Compare Models: Evaluate multiple options to determine which offers the best value.
- Calculate Life Cycle Cost (LCC): Learn to look beyond the purchase price. We will show you how to calculate the total cost of ownership—including energy use over the appliance's lifetime.
- Determine Simple Payback: Is it worth paying $500 more upfront for a model that saves $50 a month? We'll teach you the math to find out how long it takes to recover that extra cost.
What to Expect
Throughout this lesson, you will encounter specific energy efficiency terms and acronyms. Pay close attention to these, as they are essential for reading labels and performing cost-benefit analyses. The calculations for Life Cycle Cost and Payback Period are the core concepts of this module—and skills you will use for years to come.
By the end of this lesson, you will be equipped to choose appliances that are not only cheaper to operate but also friendlier to the environment. Let's get started.
Learning Objectives
By the end of this lesson, you will be able to:
- Explain the basic operating principles and primary energy drivers of major residential appliances, including refrigerators, clothes washers, dryers, dishwashers, and cooking appliances.
- Interpret EnergyGuide labels to extract and compare key information about annual energy consumption, estimated operating costs, and efficiency ratings across different appliance models.
- Calculate Life Cycle Cost (LCC) and Simple Payback period using purchase price, annual energy use, utility rates, and expected lifespan to determine the total cost of ownership for competing appliance models.
- Evaluate and compare multiple appliance models using efficiency metrics, energy consumption data, and cost-benefit analysis to make informed, economically sound purchasing decisions that balance upfront costs with long-term savings and environmental impact.