Home Energy

How to Keep Your Electric Bill Down

Most homes waste far more energy than their owners realize. Here’s a practical look at where that energy goes and what actually makes a difference on your bill.

Earth Right | Energy Efficiency Guide | 10 min read

$144

Avg. monthly electric bill (US)

52%

Of home energy used by HVAC

75%

Of US homes have leaky ductwork

If your electric bill has been climbing, you’re in good company. The average US household now spends around $144 per month on electricity, and utility rates in many areas have seen sharp increases over the last few years. A lot of homeowners assume their home is reasonably efficient, but in our experience, most homes have several fixable problems quietly driving that number up month after month.

This guide covers the full picture, from free adjustments you can make this week to the greater improvements that deliver lasting results.

The root Cause

Where Your Energy Is Actually Going

Heating and cooling account for roughly 52% of a home’s total energy use. That one number explains a lot. Your HVAC system isn’t just the biggest appliance you own, it’s also the one most affected by the condition of your home’s walls, attic, windows, and ductwork.

When a home leaks conditioned air, the HVAC system runs longer and harder to compensate. Homeowners often assume their system is aging or undersized, but frequently the system is fine — the home just can’t hold onto the air it’s producing. Understanding that distinction changes which solutions actually make sense.

$1,700+

The average annual electric bill for US households. Most of that cost traces back to heating and cooling an inefficient home — a problem that’s fixable.

Start Here

Low-Cost Wins You Can Do This Week

These adjustments cost little to nothing and can show up on next month’s bill. They won’t transform your home’s efficiency, but they’re worth doing while you plan the bigger work.

Thermostat Setback

Dial back 7–10°F for 8 hours a day while sleeping or at work. Consistent setback adds up.

~10% annual savings

Water Heater Temperature

Lowering from 140°F to 120°F is a simple setting change with a measurable impact on a commonly overlooked load.

4–22% on water heating

Appliance Habits

Full loads in cold water, skip the heated dry cycle on the dishwasher, and air dry laundry when you can.

Modest but consistent

Standby Power (Vampire Loads)

Electronics draw power even when off. Smart power strips or unplugging devices at the wall cuts this hidden drain.

Varies by home

Good Investments

Upgrades That Pay for Themselves Quickly

Smart Thermostats

A programmable thermostat is helpful. A smart thermostat learns your schedule and automates the savings without you thinking about it. ENERGY STAR-certified models save around 8% on heating and cooling annually, which typically puts the payback period well within a few years at current utility rates.

LED Lighting

LED bulbs use 75% less energy than traditional incandescent bulbs and last 25 times longer. For most homes, switching fully to LED is a one-time change that reduces lighting costs for years with no further effort.

A note on priorities: These upgrades are worth making, but they address a small portion of your overall energy load. The bigger opportunity is in how well your home holds conditioned air, which the next section covers.

Where Most Home Lose

Stopping Energy Loss at the Source

This is the category most generic energy-saving articles gloss over with a single bullet point. In our work across hundreds of homes, it’s also where the most significant and lasting savings come from.

Attic Insulation and Air Sealing

Around 25% of a home’s energy waste occurs through the attic. Heat rises into the attic in winter and radiates down in summer, forcing your HVAC to work against that thermal pressure constantly. Addressing air sealing and insulation in the attic is one of the highest-return improvements most homes can make. Advanced options like radiant barriers and reflective foam can push performance further by reducing heat transfer directly.

Ductwork Leaks

Roughly 75% of US homes have leaky ductwork, which can reduce an HVAC system’s efficiency by up to 20%. You could have a brand-new system and lose a fifth of its output before the air reaches your living space. Duct sealing is often overlooked but can produce meaningful improvements without touching the HVAC unit itself.

Aging HVAC and Roofing Systems

Older HVAC equipment works harder and runs longer to achieve the same result as modern systems. ENERGY STAR-rated equipment can significantly reduce the energy load for heating and cooling. Similarly, roofing condition affects how much heat enters or escapes a home, and a failing roof can undermine insulation performance throughout the structure.

20%

Efficiency reduction caused by leaky ductwork. In most homes, sealing ducts costs far less than replacing equipment and often delivers a bigger improvement.

the Long Game

Efficiency First, Then Solar

If solar panels are on your radar, there’s a sequencing issue worth understanding. Many homeowners add solar to a home that still has significant efficiency problems, which means they’re generating power to offset waste that could have been eliminated first.

Doing efficiency upgrades before going solar reduces your total energy consumption. A more efficient home needs fewer panels to cover its load, which typically means a smaller, less expensive solar array. The math tends to favor this order, and the combined effect is a home that produces what it needs and holds onto what it produces.

We’ve seen homes reduce their panel requirements by up to 20% after completing efficiency work first. That’s real money off the system cost, not just savings on future bills.

1. Audit First

A professional energy assessment identifies exactly where your home is losing energy and prioritizes the improvements by return on investment.

2. Seal and insulate

Address the attic, crawl space, ductwork, and air leaks. These reduce the baseline energy demand of the home.

3. Upgrade systems if needed

Right-size HVAC and roofing to the actual load of the improved home, not the original inefficient one.

4. Add solar

Size the system to the reduced consumption. Smaller array, lower cost, better performance over time.

Financial incentives

Rebates Available Now

Many local utilities also offer rebate programs for smart thermostats, weatherization work, and HVAC replacements. These vary by provider and change over time, so checking with your utility company directly is worth the few minutes it takes. A professional assessment can also help identify which improvements you’d qualify for before committing to the work.

Common Questions

Frequently Asked Questions

What uses the most electricity in my home?

Heating and cooling systems are the largest single consumer in most homes, making up around 52% of total energy use. Water heaters are typically second. Appliances and lighting make up the remainder, though their share is smaller than most people expect.

Should I get solar panels or upgrade my insulation first?

Efficiency work first. Sealing air leaks and improving insulation reduces the total energy your home needs, which lets you install a smaller and less expensive solar system. Skipping this step means sizing your solar array to a home that’s still wasting energy.

Are smart thermostats really worth the money?

For most homes, yes. ENERGY STAR-certified models save around 8% on heating and cooling costs annually, and they automate setback schedules so you don’t have to think about it. Payback period on most models is well within a few years.

How much can I save by sealing air leaks and adding insulation?

On average, combining air sealing and insulation reduces heating and cooling costs by around 15%. In older or drafty homes, the reduction can reach 30%. The result depends heavily on the starting condition of the home, which is why an assessment is a useful first step.

Find Out Where Your Home is Losing Energy

A professional energy assessment takes the guesswork out of the process. We’ll identify your home’s specific inefficiencies and show you exactly what’s worth addressing first.

Call us at 434-661-5656 or email info@erepower.com