Free Gas vs Electric Dryer Calculator

Gas vs Electric Dryer: Operating Cost Comparison

When deciding on a new clothes dryer, one of the most consequential choices is between a gas‑powered and an electric‑powered unit. This decision directly influences your clothes dryer energy cost and long‑term utility expenses. The Gas vs Electric Dryer Calculator helps you estimate and contrast both electric dryer operating cost and gas dryer operating cost by factoring in local energy prices, dryer specifications, and usage patterns. Whether you are performing a dryer cost comparison or want to quantify gas vs electric dryer savings, this tool delivers practical, data‑driven insights.

How Gas and Electric Dryers Work

Both dryer types operate by circulating heated air through a rotating drum to evaporate moisture from fabrics. The process involves two main energy‑consuming functions:

1. Heat generation – raising the temperature of incoming air.
2. Air circulation and drum tumbling – moving the hot air and rotating the load.

Electric dryers use electricity for both heating and mechanical tasks. Gas dryers, in contrast, burn natural gas (or liquefied petroleum gas) to produce heat, while a small electric motor powers the blower and drum rotation. This hybrid energy consumption creates distinct dryer energy efficiency profiles, making a side‑by‑side cost analysis essential.

Key Variables That Affect Operating Costs

To perform a meaningful gas vs electric dryer savings evaluation, you need to account for:

• Wattage (electric dryer): Typically 2,000–6,000 W, translating to 2–6 kWh per hour of use.
• BTU rating (gas dryer): Usually 16,000–22,000 BTU/h, which can be expressed in therms or cubic feet of gas.
• Drying cycle time: The duration needed to dry one load, commonly 30–60 minutes.
• Energy prices: Electricity cost in $/kWh and natural gas cost in$/therm (1 therm ≈ 100,000 BTU).
• Load frequency: Number of loads dried per week (e.g., 3 loads/week).

Cost Calculation Formulas

The electric dryer operating cost per load is derived from wattage and cycle time:

$$\text{Cost}_{\text{electric}} = \frac{P_e \, (\text{W}) \times t \, (\text{h})}{1000} \times r_e$$

where $P_e$ is the dryer’s wattage, $t$ is the cycle time in hours, and $r_e$ is the electricity price in $/kWh.

For a gas dryer, the total per‑load cost comprises two parts:

• Electric portion (for motor, controls, and sometimes the blower):

$$\text{Cost}_{\text{gas, elec}} = \frac{P_g \, (\text{W}) \times t \, (\text{h})}{1000} \times r_e$$

• Gas portion (for heating):

$$\text{Cost}_{\text{gas, heat}} = \frac{B \, (\text{BTU/h}) \times t \, (\text{h})}{100{,}000} \times r_g$$

with $P_g$ being the gas dryer’s electric wattage, $B$ the burner rating in BTU/h, and $r_g$ the natural gas price in $/therm.

The total operating cost for a gas dryer per load is therefore:

$$\text{Cost}_{\text{gas, total}} = \left( \frac{P_g \times t}{1000} \times r_e \right) + \left( \frac{B \times t}{100{,}000} \times r_g \right)$$

Practical Example

Let’s apply these formulas to a common household scenario and compare gas vs electric dryer savings.

• Cycle time: 30 minutes (0.5 h)
• Loads per week: 3 loads

Electric Dryer

• Wattage: 3,000 W (3 kW)
• Electricity rate: $0.12/kWh
• Energy per load: $3\,{\rm kW} \times 0.5\,{\rm h} = 1.5\,{\rm kWh}$
• Cost per load: 1.5 \times 0.12 = \0.18$
• Weekly cost: 3 \times 0.18 = \0.54$
• Annual cost (52 weeks): 0.54 \times 52 = \28.08$

Gas Dryer

• Electric wattage: 1,500 W (1.5 kW)

• Gas rating: 22,000 BTU/h

• Electricity rate: $0.12/kWh

• Gas rate: $1.00/therm

• Electric portion per load: $1.5\,{\rm kW} \times 0.5\,{\rm h} = 0.75\,{\rm kWh}$; cost = 0.75 \times 0.12 = \0.09$

• Gas portion per load: $22{,}000\,{\rm BTU/h} \times 0.5\,{\rm h} = 11{,}000\,{\rm BTU} = 0.11\,{\rm therm}$; cost = 0.11 \times 1.00 = \0.11$

• Total per load: \0.09 + $0.11 = $0.20$

• Weekly cost: 3 \times 0.20 = \0.60$

• Annual cost: 0.60 \times 52 = \31.20$

In this example the electric dryer has a slightly lower annual operating cost. However, results can shift dramatically depending on your local utility rates and the specific models you compare.

Making an Informed Choice

While the dryer cost comparison above provides a solid starting point, other considerations also matter:

• Upfront price: Gas dryers typically cost more to purchase than comparable electric units.
• Installation: Gas appliances require a gas line and proper venting, which may add installation expense.
• Regional energy market: Where natural gas is significantly cheaper per BTU than electricity, a gas dryer can quickly recoup its higher initial cost through gas vs electric dryer savings.
• Environmental factors: The carbon footprint depends on how electricity is generated in your area; gas dryers can be more or less eco‑friendly than grid‑powered electric models.

Use this Gas vs Electric Dryer Calculator to experiment with your own numbers – adjust wattage, BTU rating, cycle time, energy prices, and load frequency – and find the most cost‑effective dryer type for your household.