Gas vs Electric Water Heater Cost Calculator

Cost Formulas:

\[ Cost_{gas} = Energy_{gas} \times Price_{gas} \] \[ Cost_{electric} = Energy_{electric} \times Price_{electric} \]

Gas Water Heater

Energy Usage:

therms

Price per Unit:

$/therm

Electric Water Heater

Energy Usage:

kWh

Price per Unit:

$/kWh

Gas Water Heater Cost ($):

Electric Water Heater Cost ($):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a Gas vs Electric Water Heater Cost Calculator?

Definition: This calculator compares the operating costs between gas and electric water heaters based on energy consumption and local utility rates.

Purpose: It helps homeowners and contractors determine which type of water heater would be more cost-effective for their specific situation.

2. How Does the Calculator Work?

The calculator uses two simple formulas:

\[ Cost_{gas} = Energy_{gas} \times Price_{gas} \] \[ Cost_{electric} = Energy_{electric} \times Price_{electric} \]

Where:

$ Cost_{gas} $ — Total cost for gas water heater ($)
$ Energy_{gas} $ — Energy consumption in therms
$ Price_{gas} $ — Cost per therm of gas ($)
$ Cost_{electric} $ — Total cost for electric water heater ($)
$ Energy_{electric} $ — Energy consumption in kWh
$ Price_{electric} $ — Cost per kWh of electricity ($)

Explanation: The calculator multiplies the energy consumption by the unit price for each fuel type to determine total operating costs.

3. Importance of Cost Comparison

Details: Comparing operating costs helps make informed decisions about water heater selection, considering both upfront and long-term costs.

4. Using the Calculator

Tips: Enter the energy consumption for both systems (typically found on EnergyGuide labels) and your local utility rates. Default values are provided for common averages.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my energy consumption values?
A: Check the EnergyGuide label on your water heater or manufacturer specifications. Typical values range 250-400 therms/year for gas and 3,500-5,000 kWh/year for electric.

Q2: Where can I find my local utility rates?
A: Check your utility bills or contact your gas and electric providers for current rates.

Q3: Which is usually cheaper to operate?
A: Gas heaters typically have lower operating costs in most regions, but this depends heavily on local utility rates.

Q4: Should I consider other factors besides cost?
A: Yes, also consider installation costs, equipment lifespan, maintenance requirements, and environmental impact.

Q5: How accurate is this comparison?
A: This provides basic operating cost comparison. For complete analysis, consult a professional who can assess your specific situation.