Why Is My Heating Bill So High? Common Causes and Fixes

As you open your utility bills, you don’t want to be surprised by a higher figure. While heating bills can increase during the winter, sudden spikes may be a sign that something is wrong with your heating system. To learn more about what may be wrong and how to fix it, read on.

Why a Heating Bill Can Spike Unexpectedly

A larger-than-expected winter bill may be due to colder weather, but it could also be connected to an aging system or longer system run times. While some of the underlying causes can be fixed, others are related to how you are using your heating system. 

Before Blaming the System, Check the Obvious

Faulty components and poor maintenance can cause your energy bills to spike, but the real reason is often far more obvious. A combination of colder weather and more time at home often results in more expensive energy costs during the winter.

Colder Weather, Longer Billing Cycle, or Higher Rates

Colder weather, longer billing periods, and changes to your utility rates are common reasons why your bill might be higher. Before you become worried about whether your heating, ventilation, and air conditioning (HVAC) system is working, you should first read through your billing statement and check the weather to see if any of these factors are potentially to blame.

More Time at Home and More Heating Use

Another major reason why heating bills go up during the winter is that people are spending more time at home. The sun sets earlier, so people come home earlier and spend more time indoors. Over the holidays, you may also have more guests and events at home. Additionally, schedule changes at work or time off from school can lead to more energy usage. 

Common Reasons Why You Might Have a High Heating Bill

After eliminating the more obvious reasons, you can also check out some of the other problems that might result in higher heating bills. Although some of these causes may require mechanical repairs, others may be fixed by performing routine maintenance.

Dirty Filter or Blocked Airflow

When an air filter is clogged, it limits the amount of air that can go into your furnace or heat pump. As a result, your system has to work harder in order to maintain the same temperature. 

Fortunately, this is an easy problem to fix. All you have to do is check your filter and replace it if it is dirty. It should generally be replaced every 30 to 90 days, but more frequent replacements may be needed during periods of intense usage.

Leaky Ducts

In the average American home, 20% to 30% of the air that passes through the ducts is lost due to leaks, gaps, and holes. When air is lost in your attic or crawlspace, your heating system has to work harder to maintain the desired temperature. Over time, this can lead to significantly higher costs.

Thermostat or Schedule Mistakes

It’s also worth checking your thermostat to see if it is the source of your higher bills. For example, people sometimes set higher setpoints, which makes their furnace work harder.

Besides the setpoint, you should check your fan mode and schedule. Sometimes, people turn up the heat because they don’t feel the air reaching them. Running the fan for a set amount of time every hour can ensure heated air reaches every corner of your room. You should also make sure each vent’s louvers are facing downward so that heat has a chance to spread across the floor before it rises.

  Your schedule also needs to be updated so that you aren’t heating your home when you’re away. When you are home, it’s important to avoid manually overriding the settings because this can lead to more energy use.

Air Leaks and Weak Insulation

If your home has air leaks or weak insulation, there will be more heat loss. You should watch out for drafts around your doors and windows. Attics are also a common source of energy loss because heat rises to the attic, where it can easily escape if there is poor insulation. 

Aging Equipment or Skipped Maintenance

Aging equipment and poor maintenance can harm your unit’s energy efficiency. The best way to avoid this type of problem is by scheduling a heat pump or furnace tune-up service.

Hidden System Problems

Finally, short cycling, failing components, and relying on backup heat can drive up your energy costs. These problems may be less obvious, but they directly impact how hard your HVAC system has to work to keep your home warm.

Fixes That Can Lower Heating Costs

If you are struggling with higher energy costs, there are a few simple steps you can take to improve your energy efficiency.

Quick Actions You Can Take

To troubleshoot your higher energy costs, try using the following steps.

• Change the Filter: If the unit’s filter is clogged, a new filter will improve your unit’s airflow.
• Adjust the Thermostat: Troubleshoot thermostat issues by checking the mode, temperature settings, and schedule.
• Open Vents: To avoid airflow problems, open all of the vents in your home and make sure they aren’t obstructed. 
• Seal Drafts: Check for drafts around your doors and windows. Then, use caulk to seal them up.
• Use Blinds at Night: Blinds can help keep heat in during the winter by forming an extra layer of insulation.

Maintenance and Airflow Improvements

Poor maintenance can lead to dirty and damaged components. Fortunately, a simple tune-up may be able to fix the problem. During the tune-up, we can also evaluate your ducts for potential leaks and test the airflow in your home. If there are any issues, we can seal your ducts and make adjustments to improve your home’s airflow.

Signs You Need a Professional Inspection

Even with the best maintenance and DIY care, some tasks can only be dealt with by a professional. If you notice the following symptoms, it’s time to call for an expert diagnosis.

Comfort Problems That Match the High Bill

Once your HVAC problems start to affect your family’s comfort, you need to schedule a repair appointment. Unusually cold rooms, constant cycling, extra noise, and uneven heat are signs that repairs are needed. Additionally, you should immediately get help if your heat pump or furnace remains on for extended periods of time.

Bill Spikes That Do Not Match the Weather

It’s normal to have energy bills that spike when the weather gets colder. If your energy bills keep increasing when the weather warms up, this indicates a mechanical problem instead of normal seasonal use.

When Repair Versus Replacement Becomes the Bigger Question

Once you’ve diagnosed the underlying issue, the next step is determining whether your heat pump or furnace should be repaired or replaced.

When Repairs Are a Good Choice

A repair is often a better choice when you’re dealing with an isolated problem or something that is easy to fix. Similarly, fixing a gap between tune-ups or performing a low-cost repair is generally a worthwhile investment.

When Replacements Make More Sense

Once HVAC systems reach the end of their lifespans, they are more likely to need repairs and become less efficient. At this point, it’s better to simply replace the unit. Similarly, it’s better to get a replacement if your furnace or heat pump has a repeated repair history or continues to experience declines in energy efficiency.

FAQs

Why did my heating bill go up if I did not change the thermostat?

Even if you didn’t change your thermostat, your heating system may be working harder because the temperature is colder. Issues with your system’s condition, a longer billing cycle, or poor maintenance can also impact how efficient your heating system is.

Can a dirty air filter really raise my heating bill?

Absolutely. When the filter is dirty, it limits airflow in your unit. This makes your heater work harder to warm up your home, leading to longer runtimes. In turn, this factor results in higher energy bills.

How much do duct leaks affect heating costs?

Duct leaks can play a major role in heating costs. When air leaks out, it is lost to your crawlspace or attic. Then, your heating system has to work harder to replace the lost air and keep your home warm. By sealing the ducts, you can reduce energy loss.

When does a high heating bill mean I need service?

Sudden spikes in your energy bill, comfort problems, and repeated issues with your HVAC system are signs that you should get your unit serviced. If you have already tried replacing the filter and performing basic maintenance, the next step is scheduling a professional repair appointment.

Improve Your Home’s Energy Efficiency

Whether you are struggling with a faulty furnace component or need a heat pump tune-up, we can help. Fox Family Heating & Air can evaluate your HVAC system to figure out why your energy bills are increasing. Then, we can help you determine the best repair or replacement for fixing the problem. 

Are you tired of inexplicably higher energy bills? Reach out to Fox Family today for expert diagnostics.