When it comes to heating a garage, two of the most common options are gas and electric heaters. Both have their advantages and disadvantages in terms of upfront costs, operating costs, efficiency, and more. Deciding which is more cost effective for your garage depends on several factors like garage size, climate, usage, and so on.
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Upfront Costs
In general, gas heaters tend to have higher upfront costs compared to electric heaters. Here are some estimates for upfront costs of common garage heating options:
| Heater Type | Upfront Cost Range |
|---|---|
| Gas Unit Heater | $500 – $1,500 |
| Electric Unit Heater | $100 – $500 |
| Gas Infrared Heater | $300 – $1,000 |
| Electric Infrared Heater | $100 – $300 |
As you can see, gas heaters tend to cost 2-3x as much upfront compared to comparable electric heaters. This is because gas heaters require additional components like gas lines, exhaust venting, and safety features to meet codes.
Operating Costs
While electric heaters are cheaper upfront, gas heaters are generally less expensive to operate over time. Here’s a comparison of estimated energy costs for common garage heater types:
| Heater Type | Energy Source | Estimated Monthly Cost |
|---|---|---|
| 30,000 BTU Gas Unit Heater | Natural Gas | $40 – $60 |
| 30,000 BTU Electric Unit Heater | Electricity | $75 – $100 |
| 10,000 BTU Gas Infrared Heater | Propane | $60 – $80 |
| 10,000 BTU Electric Infrared Heater | Electricity | $100 – $150 |
The figures above assume average garage use of 1-2 hours per day. As you can see, gas heaters can save $20+ per month over comparable electric heaters. These savings add up over the lifetime of the heater.
Efficiency
Gas heaters tend to be more energy efficient than electric heaters. Here are some key efficiency differences:
- Gas unit heaters have thermal efficiencies of 80-95%, compared to 100% for electric.
- Gas infrared heaters can be nearly 100% efficient, while electric models max out around 95% efficiency.
- Gas does not have line loss from the power source like electricity does.
The higher efficiency means gas heaters provide more heat using less fuel. They make the most of every bit of gas purchased.
Garage Size
For small to mid-sized garages (1-2 car garages up to 400-500 sq ft), gas and electric heaters can both be suitable options. In this size range:
- Electric heaters may be preferred if upfront cost is the main concern.
- Gas heaters become more cost effective over the long run thanks to lower operating costs.
For larger garages (500+ sq ft), gas heaters tend to be a better heating option. Their higher heating capacity and efficiency make them better suited for heating large spaces.
Climate and Location
Climate and location also play a role in gas vs electric garage heat. Key factors to consider are:
- Cold climates – Gas heat provides greater heating output for extreme cold. Good option for garages in northern climates.
- Mild climates – Electric heat may suffice for intermittent heating needs. Good option for southern garages.
- Urban vs Rural – Gas may be more readily available in rural areas. Electricity more ubiquitous in cities.
Your local climate and energy infrastructure should help guide your fuel type decision.
Usage Patterns
How often the garage is used and whether it’s heated all winter also impacts the gas vs electric decision:
- Frequent use – Gas heaters may offer lower operating costs for regularly heated garages.
- Infrequent use – Electric heaters provide heat on-demand without needing to run gas lines.
- 24/7 heating – Gas heaters better suited for keeping garage warm at all times.
- Intermittent heating – Electric heaters allow zoned or spot heating as needed.
Think about your specific garage usage patterns when choosing between gas vs electric.
Ventilation and Maintenance
There are some ventilation and maintenance considerations as well:
- Gas heaters require ventilation for exhaust. Electric units do not.
- Electric heaters have virtually no maintenance. Gas heaters need occasional inspection.
Proper ventilation for gas appliances is a must. And gas systems do require periodic maintenance for optimal performance and safety.
Installation and Setup
Installing electric heaters is generally simpler than gas:
- Electric heaters just need to be plugged in or wired to an outlet.
- Gas lines must be run and the heater properly vented outside.
Much of the cost savings of gas heaters can be offset if extensive gas line work or venting needs to be added.
Safety
Both gas and electric garage heaters can be safe options with proper use and precautions. Key safety tips include:
- Carefully follow all manufacturer instructions.
- Maintain ample clearance from combustibles.
- Don’t leave portable heaters unattended.
- Install CO detectors with gas appliances.
- Use GFCI circuits with electric heaters.
When operated safely, both gas and electric heaters can effectively warm a garage space.
Environmental Impact
In terms of environmental impact:
- Gas emits greenhouse gases like CO2 when burned.
- Electricity may cause emissions at the power plant source.
- Electricity usage is easy to offset with renewable energy.
For most homeowners, the greenhouse gas impact will be lower with an efficient electric heater. But energy source and efficiency should both be factored in.
Conclusion
So which is better – gas or electric garage heat? Here are some key takeaways:
- Electric heaters are cheaper upfront, easier to install, and need little maintenance.
- Gas heaters have lower operating costs over time and can better heat larger areas.
- Electric heat suits mild climates and occasional garage use.
- Gas heat works well for cold climates and regular winter use.
- There are good options with both fuel types if selected properly.
For many homeowners, an efficient gas heater offers the best long-term value. But electric heat can also be a viable option depending on your specific needs and situation. Consider all the factors – costs, efficiency, climate, usage – when deciding between gas vs electric for your garage.