How To Reduce Your Energy Bill with Proper Maintenance

Keeping your home comfortable shouldn’t come at the cost of skyrocketing energy bills. But for many Western Washington homeowners, the reality is that air conditioning systems are quietly draining more energy—and money—than they need to. The good news? Regular AC maintenance can dramatically reduce your energy bill, without sacrificing cool air in the summer or comfort year-round.

Why AC Units Drive Up Your Energy Bill

Air conditioning systems are among the highest energy consumers in the average American home, especially in warmer months. Even in temperate climates like Western Washington, poor AC performance can quickly lead to higher electric bills.

Common Causes of High AC Energy Use

  • Clogged filters force your unit to work harder to push cool air.
  • Dirty coils limit heat exchange, making cooling less effective.
  • Refrigerant leaks or incorrect levels reduce system efficiency.
  • Leaky ductwork lets conditioned air escape before it reaches your rooms.

How AC Performance Degrades Over Time

Like any machine, your HVAC system loses efficiency without regular care. Dirt, moisture, and general wear and tear all contribute to higher power consumption. You may not notice the performance drop right away, but your electric bill will.

The Hidden Cost of Ignoring Small Issues

That faint buzzing or occasional short-cycling? Minor AC problems tend to snowball. What seems like a small inconvenience today can lead to compressor failure or other costly repairs tomorrow—not to mention wasted energy in the meantime.

The Link Between AC Maintenance and Energy Efficiency

Routine maintenance is one of the most effective ways to reduce your energy bill. A well-maintained system uses less power, cools more effectively, and lasts longer.

How Tune-Ups Improve Efficiency

Annual or seasonal maintenance addresses the core components of your unit. They ensure refrigerant levels are correct, clear blockages and buildup, and calibrate the thermostat and sensors. Plus, they inspect electrical connections and moving parts to make sure that nothing might start dragging your system through the mud in the future.

Follow ENERGY STAR and Manufacturer Guidelines

ENERGY STAR recommends annual HVAC checkups. Many manufacturers even require regular maintenance to keep your warranty valid. Skipping out might void protections and lead to unnecessary energy use.

Often-Overlooked Saving Opportunities

Most homeowners never think to check their thermostat placement. If it’s near a window, oven, or heat source, it could be reading inaccurately and overworking the system. Air leaks in attics or crawl spaces are another common issue that lets cool air escape, forcing your AC to run longer. And don’t underestimate the value of properly insulating ducts and service bends, especially in older homes. These small, easily overlooked fixes can make a big impact, especially when combined with regular AC maintenance.

Smart Thermostat Settings to Reduce Your Bill

Yes, the temperature you set matters—more than you think.

What Temperature Should You Set Your AC At?

The U.S. Department of Energy recommends 78 degrees when you’re home and active. This balances comfort and energy savings.

Adjusting for Day vs. Night

At night or when you’re away, raise the temperature 7–10 degrees. If you have a programmable thermostat, you can set it and forget it. Better yet, smart thermostats adapt to your habits and fine-tune usage over time.

Tips to Set Your Thermostat for Maximum Savings

  • Use ceiling fans to make 78° feel cooler
  • Avoid setting it to colder temps thinking it will cool faster (it won’t)
  • Install a programmable thermostat if you haven’t already

AC Maintenance Checklist That Lowers Your Bill

Keep your system running lean with this maintenance checklist:

  • Change air filters every 1–3 months
  • Clean condenser and evaporator coils
  • Check and seal ductwork
  • Inspect and top off refrigerant
  • Clean the condensate drain
  • Test thermostat and calibrate as needed
  • Lubricate moving parts
  • Tighten electrical connections

This isn’t just busywork. This is the foundation of energy-efficient AC performance.

Seasonal Maintenance Tips

Spring Prep for Summer

Before summer hits, clean the outdoor condenser unit and test your AC early to catch any issues. It’s also smart to schedule your tune-up ahead of peak season, since technicians get booked fast.

Fall Inspections Before Winter

As cooler weather approaches, preparing your HVAC system can help prevent breakdowns and keep energy costs in check. Switch your system to heating mode and confirm it’s working properly. Check for drafts or gaps around windows and doors, and consider flushing your water heater if it hasn’t been serviced recently.

Consider Local Weather in Western Washington

High humidity and mild summers can lead to air quality issues and mold growth if your system isn’t ventilating properly. Maintenance can address both cooling and ventilation.

DIY vs. Professional AC Maintenance

Some tasks you can handle. Others? Best left to the pros.

What Is DIY Friendly

  • Replace air filters
  • Keep vents and registers unblocked
  • Trim vegetation around your outdoor unit
  • Gently clean accessible coils with a soft brush

When To Call in a Pro

If you’re dealing with:

  • Refrigerant levels
  • Electrical components
  • Unusual noises or short cycling
  • Performance issues despite basic upkeep

A licensed technician should take the lead. They have tools and training that go beyond a homeowner’s toolbox.

Signs Your AC System Is Costing You Too Much

Not sure if your unit’s inefficient? Watch for these red flags:

  • Sudden or unexplained increases in your electric bill
  • Hot or cold spots in different rooms
  • AC runs constantly or turns on/off too quickly
  • Strange smells or noises from vents or the unit

If you find yourself experiencing any of these red flags, it’s definitely time to call a professional, and it might be time to start considering preventative maintenance. 

Is Preventative Maintenance Worth the Cost?

Absolutely. Maintenance is cheaper than repairs, and way cheaper than a full system replacement. According to ENERGY STAR, a well-maintained AC unit can reduce cooling costs by up to 15%. Over a few summers, that adds up fast. Many local companies (like ours) offer annual service plans, too. You get priority booking, discounted repairs, and peace of mind knowing your system is in good hands.

When It’s Time to Upgrade Your AC

Efficiency Standards Have Changed

Today’s energy-efficient units use up to 50% less energy than systems from the early 2000s. If yours predates smartphone apps, it’s probably time. For a real frame of reference: if your unit is over 12–15 years old, needs frequent repairs, or still uses R-22 refrigerant (phased out) it’s time to consider that new system.

Local Rebates in Western Washington

Incentives are available for ENERGY STAR units, smart thermostats, and even bundled upgrades like insulation and hot water heaters. Ask us what’s available in your area; we’re happy to help you navigate it.

Finishing Up 

Reducing your energy bill doesn’t have to mean sacrificing comfort. With the right AC maintenance, smart thermostat habits, and attention to detail, you can stay cool, save energy, and avoid surprise repair bills.

Think of it like this: you maintain your car to avoid breakdowns and get better gas mileage. Your AC deserves the same treatment.

Why Western Washington Trusts Chehalis Sheet Metal

At Chehalis Sheet Metal, we know that comfort isn’t just about cool air—it’s about confidence that your system won’t quit on the hottest day of the year. We’re a local, family-run team dedicated to making homes in Western Washington more energy-efficient, comfortable, and affordable to run. Whether you’re dealing with an aging AC, considering a system upgrade, or just want to prep for summer—we’re here to help.

Call Chehalis Sheet Metal today or request a service online—we’re here when you need us. Your comfort is our priority.