Sustainable Living

Sustainable Living Ideas: The Ultimate Guide to an Energy-Efficient Home

Q: How much money can an energy-efficient home save?

According to the U.S. Department of Energy , homeowners can often cut energy bills by about 5% to 30% with a combination of audits and efficiency upgrades. The exact figure depends on the home's condition and which upgrades you make.

By David Cosseboom•Updated Sep. 27, 2026

Sustainable living doesn’t start with a lifestyle overhaul. It starts with the electricity, natural gas, and water your home already uses every day. Set those up to run efficiently and you lower your bills and your footprint at the same time.

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5-30%

Energy bill savings from audits and upgrades

3,000+

Gallons a year lost to one dripping faucet

120°F

Water heater setting most homes need

21.4%

U.S. power from renewables

Start Here

What Sustainable Living Means for Your Utilities

Sustainable living is often associated with recycling bins and composting, but for a homeowner it really starts with how you manage your home’s core resources. Instead of treating them as limitless, you run them to minimize waste: appliances that do more with less power, and habits that stop usage nobody needed.

Those choices lower your carbon footprint and keep more money in your account every month. Each of the three utilities has one lever that matters most.

Electricity

Powers everything plugged in, and often your heating and cooling too.

Biggest lever

Where it comes from, and what’s drawing it on standby

Electricity guide →

Natural Gas

Usually heats the house and the water, the two biggest energy jobs in a home.

Biggest lever

Keeping heated air in, and the water heater at 120°F

Natural gas guide →

Water

Every gallon you save is also a gallon you didn’t pay to heat.

Biggest lever

Low-flow fixtures, and fixing leaks the week you find them

Water guide →

Your Roadmap

Six Steps, in the Order That Pays Off

You don’t have to do everything at once. This order puts the free and low-cost fixes first, so each step makes the next one worth more. Jump to any of them.

01 Start here

Run an energy audit

Find where your home loses energy before you spend on fixes.

COST: FREE (DIY)

Seal and insulate

Keep conditioned air inside so your HVAC stops working overtime.

COST: LOW

Automate your climate

A smart thermostat stops you paying to cool an empty house.

COST: LOW

Cut water waste

Low-flow fixtures, a 120°F heater, and leaks fixed fast.

COST: FREE TO LOW

Tame your devices

Smart strips and plugs end the standby draw you never see.

COST: LOW

Choose a cleaner source

In deregulated states, pick a renewable electricity plan.

COST: VARIES

Step 01 · Energy Audit

Why an Energy Audit Is Your First Sustainable Living Step

Before you invest in renovations, find out exactly where your home is losing energy. A professional energy audit identifies air leaks, thin insulation, and inefficient equipment, then hands you a roadmap for cutting your footprint where it counts.

Many utilities offer free or discounted audits to new customers, so ask yours first. If a professional audit isn’t in the budget, the walk-through on the right covers the basics and gives you a baseline for which upgrades to prioritize.

Estimate your home’s carbon footprint →

DIY Walk-Through

0 of 6 checked

Feel for drafts around exterior doors Check windows for gaps and worn weatherstripping Look for gaps around outlets and switch plates Check the age of your HVAC filter Read your water heater’s temperature setting Count the devices left in standby overnight

Steps 02–03 · Heating & Cooling

Smart Climate Control: Heating and Cooling Efficiently

Heating and cooling account for the largest share of your home’s energy use, which makes them the place efficiency pays most. Two moves do the work, and the order matters.

First · Step 02

Keep the Air You Paid For

Drafts around windows and doors force your system to run overtime. According to the Department of Energy, proper air sealing and insulation can significantly cut heating and cooling costs while making the house more comfortable.

→

Weatherstripping around doors and operable windows.

→

Insulation in the attic and walls to hold indoor temperature steady.

Then · Step 03

Stop Conditioning an Empty House

A smart thermostat is one of the most effective upgrades you can make. It learns your schedule and adjusts automatically when you leave for work or go to sleep.

→

Schedules set back the temperature while you’re out.

→

Learning adapts to your routine without reprogramming.

Why seal first: a smart thermostat can only schedule the air you have. If it’s leaking out around the doors, automation just manages the waste more precisely.

Step 04 · Water

Water Conservation Strategies That Lower Bills

Water savings count twice: once on the water bill, and again on the energy it takes to heat what you use. Start with the setting most homes get wrong.

Your Water Heater Setting

Turn It Down 20 Degrees

120°F

Recommended

Common setting

140°F

100°

150°

Many water heaters are set around 140°F, hotter than most households need and hot enough to scald. Dropping to 120°F saves energy on every shower, load, and rinse, and makes the tap safer.

Swap in Low-Flow Fixtures

Modern low-flow showerheads and faucet aerators keep strong pressure while using a fraction of the water standard fixtures do. It’s a ten-minute swap that trims both your water bill and the energy spent heating it.

One drip per second

3,000+

gallons wasted per year, from a single leaky faucet

That’s the EPA WaterSense estimate. Check faucets, showerheads, and toilets regularly and fix what you find.

Going further: a complete guide to rain barrels →

Step 05 · Electronics & Appliances

Sustainable Habits for Electronics and Appliances

Televisions, computers, and game consoles keep drawing power in standby, a steady trickle known as vampire power or phantom load. These six habits shut it off and get more out of the appliances you already own.

Standby

Use smart power strips

They cut supply completely to the TV and console cluster when nothing is in use.

Scheduling

Put lamps on smart plugs

Lights off at bedtime, coffee maker off after you leave, without remembering to do either.

Lighting

Switch to LEDs

The fastest low-effort cut in the house. Smart bulbs add scheduling on top.

Laundry

Wash in cold water

Cleans most loads just as well as hot, with far less energy spent heating water.

Kitchen

Run full dishwasher loads

A full cycle uses the same water and energy as a half-empty one. Wait until it’s loaded.

Replacing

Buy ENERGY STAR®

When a major appliance needs replacing, certified models do the same work on less power.

More ways to save on your electric bill →

Step 06 · Energy Source

Optimizing Your Energy Source and Setup

How much control you have over your power’s source depends on where you live. In deregulated markets such as Texas, Pennsylvania, and Ohio, you choose your electricity provider, including 100% renewable plans sourced from wind and solar farms. Considering panels of your own? Start with our guide to solar utilities and setup.

Green Energy Plans

Many providers buy renewable energy certificates to match your usage with clean generation.

Time-of-Use Rates

Setting up new service? Ask about time-of-use plans, which reward shifting heavy usage off peak.

Service-Level Upgrades

An up-to-date breaker box and meter improve safety, support EV chargers and heat pumps, and keep readings accurate.

Money-Saver

Don’t assume renewable means expensive. In many competitive markets, green plans are priced in line with, or even below, traditional fossil fuel plans thanks to the falling cost of wind and solar.

        Can You Choose a Green Plan?      

Go Deeper

More on Sustainable Living

Guides on waste, water, alternative power, and keeping your home efficient through every season.

FAQ

Frequently Asked Questions About Sustainable Living

What is the most effective way to start sustainable living at home?

Focus on energy efficiency first. Swapping incandescent bulbs for LEDs and installing a smart thermostat offer immediate cost and carbon reductions with relatively little effort, and they go straight at your home’s biggest energy users.

Do sustainable homes cost more to maintain?

Some upgrades, like high-efficiency appliances or solar panels, cost money up front, but the long-term savings on utility bills usually outweigh the investment. Over time a sustainable home generally costs less to run, especially if you follow an energy audit and tackle the biggest gaps first.

Can renters practice sustainable living?

Yes. In a deregulated area you can often choose your own green energy provider. You can also use smart power strips, switch to LED bulbs, and wash laundry in cold water, none of which need a landlord’s sign-off.

How much money can an energy-efficient home save?

According to the U.S. Department of Energy, homeowners can often cut energy bills by about 5% to 30% with a combination of audits and efficiency upgrades. The exact figure depends on the home’s condition and which upgrades you make.

Is smart home technology considered sustainable?

Yes, it’s one of the most useful tools for it. Smart thermostats, automated lighting, and leak detectors prevent waste by automating efficiency, so you only use resources when you actually need them.

About the Authors

David Cosseboom

Editor in Chief · Author

David has been an integral part of some of the biggest utility sites on the internet, including InMyArea.com, HighSpeedInternet.com, BroadbandNow.com, and U.S. News, with more than 15 years writing about, compiling, and analyzing utility data.

Read Bio | LinkedIn

Jared Evans

Utilities Expert · Reviewer

Jared reviews our electricity coverage for accuracy, checking provider territories, plan structures, and deregulation rules against current state commission filings before publication.

Read Bio