Yes, if you have a gas water heater, hot water is one of the biggest drivers of your gas bill, typically accounting for about 18% of your home's total energy use.
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.
Main causes for high gas bills
In general, yes. Because natural gas typically costs less per unit of energy than electricity, standard gas water heaters are cheaper to run than standard electric models. However, electric heat pump water heaters are the cheapest of all to operate.
The heating of the water, however, depends on your home's hot water heater, which is powered by electricity or gas. As a result, the cost of hot water will be included in your electricity bill or gas bill.
On average, instantaneous gas hot water systems use between 0.5 to 1.5 gigajoules (GJ) of gas per day, depending on factors such as household size, water usage, and system efficiency. Over a month, this could translate into an average gas cost of $50 to $120.
A 10-minute shower typically uses 12 to 25 gallons (45 to 95 liters) of hot water. The exact amount depends on your showerhead's flow rate and the temperature you prefer (as hot water is mixed with cold):
If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it. You might need to turn on your heating earlier if your home takes longer to reach a comfortable temperature.
Gas heaters commonly employ electric fans to distribute warm air evenly throughout a space. While these fans are essential for efficient heat distribution, they can significantly impact your monthly electricity costs.
The cheapest ways to heat water for a home are using a heat pump water heater or solar thermal panels, which offer the lowest operating costs, especially when paired with rooftop solar. For immediate, small-scale needs, electric kettles are more efficient than stovetops.
Pilot light in your boiler might be on? It burns a small amount of gas all the time in many gas boilers.
Heating and cooling (HVAC) systems are the biggest energy consumers in a typical house, accounting for roughly 45−50% of your total electricity usage. Water heaters, refrigerators, and lighting round out the rest of the major draws.
The fix: Lower your home temperature to 68 degrees when you're home. Maintain comfort by adding extra layers of clothing – try fabrics like fleece, flannel and wool – and don't forget comfy slippers and blankets. If you can comfortably go a degree or two cooler than 68, your wallet will benefit even more!
If electricity costs £0.29 per kWh: 3kW × 1 hour × £0.29 = £0.87 per hour. So, if you use hot water for 3 hours daily with a 3kW immersion heater, that is £2.61 a day.
A morning cold shower is typically caused by a faulty water heater thermostat, an overnight drop in groundwater temperature, a broken dip tube in the water heater, or an anti-scald valve set too restrictively in the shower itself.
Average monthly water bill
The average water bill in the U.S. is $49 per month, with most bills falling between $40 and $60 per month. However, monthly water bills range from $15 to $100+, depending on the household size, water usage, and location. A typical family of 4 uses over 300 gallons of water per day.
It is almost always cheaper to lower your thermostat when you are away or sleeping than to maintain a constant temperature, according to the Department of Energy.
A typical furnace runs for approximately 10 to 15 minutes per cycle, cycling three to eight times per hour. A short cycling system runs for less than five minutes, then quickly restarts, often cycling much more frequently. This pattern prevents efficient heating and creates massive strain on your equipment.
To calculate the cost of running a 1500-watt heater for 24 hours in the US, you need to know the electricity cost per kilowatt-hour (kWh). If the average cost is about 16 cents per kWh (as of early 2023), the heater uses 1.5 kW x 24 hours = 36 kWh. Therefore, the cost would be 36 kWh x 16 cents = 5,76.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
For most customers, we recommend turning on your furnace when the weather is consistently below 18° Celsius, which usually happens to be around the end of September, or early October. Some homeowners try to put off turning on their furnace as long as they can to save money, which is okay if you're healthy adults.
Your tank size is the most significant determinant of how long you can have a hot shower: 30-gallon tank: ~5–7 minutes of hot water. 40-gallon tank: ~8–10 minutes. 50-gallon tank: ~10–12 minutes.
Older toilets (pre-2000) can use up to 13 litres per flush. Modern single-flush toilets typically use 6 litres. Dual-flush toilets offer a choice: typically around 4 litres for a half flush and 6 litres for a full flush.
Toilet and faucet leaks
The most common cause for a high water bill is running water from your toilet. A continuously running toilet can waste up to 200 gallons a day or more depending on the volume flow down the drain.