Why Is My Gas Bill So High? 5 Common Reasons Why

Don't go through the roof when your gas bill is high

A woman cooking on the stove
Klaus Vedfelt / DigitalVision / Getty Images
A woman cooking on the stove
Klaus Vedfelt / DigitalVision / Getty Images
Highlights
  • Supplier price increases can make your bill higher than normal.

  • Your gas bill may be high because of a problem with your HVAC.

  • Poor insulation can also make your HVAC work harder, increasing your bill.

  • You have a few options if you want to reduce your gas bill.

Get quotes from up to 3 pros!
Enter a zip below and get matched to top-rated pros near you.
Geo Icon

Did you have to do a double-take when you looked at your most recent gas bill? If you're wondering "Why is my gas bill so high?" the answer can be a few things, including price hikes, faulty appliances, and more. While some are out of your control, others are fixable, leading to a more budget-friendly bill in the months to come.

1. Price Increases

Natural gas is a commodity, and it's affected by the laws of supply and demand. When there's a lot of natural gas to go around, the price drops, which is usually reflected on your bill. 

On the flip side, a limited supply of natural gas, due to reduced imports, lack of adequate gas reserves, and reduced production, usually drives the price up. This is particularly the case when a limited supply meets an increased demand, such as during the winter months. 

Your natural gas supplier will usually keep you up-to-date on price fluctuations, but in some years, those fluctuations can be considerably higher than usual, leading to an eye-popping gas bill.

The Solution

While you can't do much about supply and demand, you may be able to shop around and try to find a gas supplier that offers a lower price or that has fixed rates for an extended period. If you're in an Energy Choice state, you're able to shop around.

2. Weather Changes

A sudden drop in the temperature outdoors can lead to a spike in your gas bill, as your furnace needs to work harder to keep your home warm. Colder weather can also mean your household starts to use more hot water, which can drive up your gas bill if you have a gas water heater.

The Solution

You can't control the weather, but you can control your home's thermostat. Instead of cranking up the heat as the temperatures drop, encourage your family to put on an extra layer or two. Cozy up under blankets to keep warm while watching TV and limit the length of hot showers to under 10 minutes.

3. Your Appliances Need Some TLC

A person inspecting a gas heater
aquaArts studio / E+ / Getty Images

Gas heaters, stoves, and water heaters all need ongoing maintenance to keep working efficiently. As your appliances get older, though, they may not work as well as they did previously, leading to an increase in your gas bills. 

Even if your appliances are on the newer side, if there's a problem with them, they may use more fuel than intended, bumping up your bill. If prices haven't gone up and the weather isn't unusually cold, a faulty appliance could be to blame.

The Solution

Depending on its age and condition, the best option here may be to replace your heating system or other gas appliances. A local HVAC contractor can inspect your system and let you know the best way to proceed. The same is true of a gas water heater or stove.

4. Poor Insulation

Insulation keeps hot air from escaping your home while keeping cold air out. A high gas bill can be a sign of a poorly insulated home, as your heater needs to work extra hard to keep the temperature at a comfortable level. Even then, you may notice that parts of your home feel much colder than they should be. 

The Solution

Adding insulation to areas that have none can help you get your gas bills under control.  Hiring an insulation contractor can help you understand the type of insulation that will work best for your home and climate. 

5. Thermostat Wars

A child adjusting the temperature via a thermostat
PixelCatchers / E+ / Getty Images

Your gas bill may be high because someone in your home is cranking up the thermostat. The U.S. Department of Energy recommends keeping your thermostat at 68 degrees Fahrenheit in the winter and turning it down at night and when you're not at home to reduce your energy use. 

But a member of your household may have other ideas and could be turning up the thermostat higher to get toasty.

The Solution

Sit down with members of your household and have a chat about thermostat use. It could be that you create rules about who can touch the thermostat and how high is too high. Another option is to install a smart thermostat, which can learn your household's habits and help reduce your gas bill. 

When to Call a Pro

If you suspect that an outdated or malfunctioning gas appliance is contributing to your high bills, it's time to call in a professional to take a look at it. An HVAC repair contractor can examine your furnace or heating system, make adjustments to it to improve its function, or recommend replacement if it's on its last legs. 

If a poorly insulated home is contributing to your increased energy costs, hiring an insulation contractor is the way to go. They can evaluate your home and install the correct type and level of insulation to bring your energy bills down.

How to Prevent Sky-High Gas Bills

Along with replacing old appliances and adding insulation, there are a few other things you can do to prevent high gas bills:

  • Wear extra layers in the winter and use plenty of blankets.

  • Limit hot showers.

  • Turn down the thermostat at night and when you're not at home.

  • Have your heating system inspected and serviced annually to keep it functioning at its best.

Frequently Asked Questions

In homes that have a gas furnace, it's typically the heating system that uses the most gas. That explains why your gas bill is almost always higher in the winter and other colder months than it is in the summer. Other appliances that may use gas include your water heater, clothes dryer, and stove.

If your home uses more than one gas appliance, you'll continue to use gas, even outside of the heating season. Your water heater, gas stove and oven, and gas dryer will all use some gas, although typically much less than a furnace. Additionally, those appliances may also have a pilot light that is lit continually, using a small amount even when no one is at home.

Need professional help with your project?
Get quotes from top-rated pros.
The homeowners guide to heating and air conditioning services
From average costs to expert advice, get all the answers you need to get your job done.
Father and son playing at home
Apr 24, 2025
Apr 24, 2025
Heating and cooling system on the fritz? Discover the factors that go into HVAC repair costs and how you can save money on this crucial home update.
Heat pump exterior backyard
Apr 22, 2025
Apr 22, 2025
A heat pump is an eco-friendly heating and cooling system that can save you money on utilities each month. Find out the cost of a heat pump with this guide.
A woman turning on AC unit
Apr 16, 2025
Apr 16, 2025
The cost of a new AC unit depends on the size and type. Our guide breaks down AC replacement cost factors so you can decide which option matches your budget.
A woman covered in a blanket reading a book
Apr 23, 2025
Apr 23, 2025
Whether you’ve lost heat or your furnace is making strange sounds, stay calm. Use this guide to determine the source of the problem and your next steps.
A woman covered in a blanket drinking some coffee
Apr 22, 2025
Apr 22, 2025
Why are some rooms colder than others? If your living room is toasty but the bedroom is freezing, here are a few reasons why and how to fix it.
Woman and cat sitting with a blanket
Apr 22, 2025
Apr 22, 2025
If your furnace is making loud noises, it could be the first sign something is failing. This guide will go over some of your furnace’s most noisy issues.