· 3 min read
Converting an oil furnace to a gas furnace involves removing the existing oil system and installing a new natural gas unit. It can be a beneficial move due to cost efficiency and environmental factors. However, it’s important to understand the necessary steps and potential costs involved.
Why Convert from Oil to Gas?
Switching from oil to gas can result in significant cost savings over time. Natural gas is often cheaper than oil, which can lower your heating bills. Additionally, gas furnaces generally require less maintenance and are more environmentally friendly, producing fewer emissions.

Steps Involved in Conversion
Converting from an oil to a gas furnace involves several key steps:
- Assessment: A professional will evaluate your current system and home to ensure compatibility with a gas furnace.
- Permit and Inspection: You’ll likely need permits and inspections, especially if new gas lines are required.
- Removal of Oil System: The existing oil furnace and tank must be safely removed.
- Installation of Gas Lines: If not already in place, new gas lines need to be installed.
- Installing the Gas Furnace: The new furnace is installed and connected to the gas line.
Each step should be handled by qualified professionals to ensure safety and compliance with local regulations.
Potential Costs
The cost of converting from oil to a gas furnace can vary widely based on factors like location, current setup, and gas line requirements. It can include:
- Removal Costs: Disposing of the old oil system safely.
- Installation Costs: Purchasing and installing the new gas furnace.
- Line Installation: If gas lines are not present, additional costs for their installation.
These costs can differ significantly, so it’s wise to get multiple quotes from local contractors. You can find HVAC contractors in your area to get started.
Benefits of Natural Gas Furnaces
Natural gas furnaces offer several advantages:
- Efficiency: Modern gas furnaces are highly efficient, often with efficiency ratings over 90%.
- Cost-Effective: Lower fuel costs can lead to long-term savings.
- Reduced Maintenance: Fewer moving parts mean less frequent repairs.
- Environmentally Friendly: Produces fewer greenhouse gases compared to oil.
Switching to a gas furnace can provide both economic and environmental benefits, making it a sound investment for many homeowners.
Considerations Before Converting
Before starting the conversion process, consider the following:
- Check if natural gas is available in your area.
- Evaluate the age and condition of your current heating system.
- Assess the potential savings to justify the initial investment.
Consulting with a professional can help you weigh these factors based on your specific situation.
Finding the Right Contractor
Hiring a qualified contractor is crucial. Look for professionals with experience in furnace conversions. You can find options in major cities like Toronto or Calgary. Ensure they are licensed and have a good track record.
By understanding the steps, costs, and benefits, you can make an informed decision about whether converting from oil to gas is right for your home. Always consult with professionals to ensure a safe and cost-effective conversion.
Frequently asked questions
How long does it take to convert from oil to gas furnace?
The conversion process can take a few days to a week, depending on the complexity of the installation and the availability of gas lines.
Is it worth converting from oil to gas?
Converting from oil to gas can be worth it if natural gas is cheaper in your area and you're looking for a more environmentally friendly option.
Do I need a permit to convert my furnace from oil to gas?
Yes, you will likely need permits to convert from oil to gas. This ensures the installation meets local safety and building codes.