Switching from an oil furnace to a gas furnace can lead to significant savings and improved efficiency. Here's a breakdown of what to expect when converting:
Average Costs
| Expense | Cost Range |
|------------------------------------------|-------------------------------------|
| Gas Furnace Installation | $3,800–$10,000 |
| High-Efficiency Gas Furnace | $3,500–$5,500 |
| Underground Gas Line Installation | $250–$800 |
| Propane Tank Installation | $500–$3,000 (or $50–$200/year to rent) |
| Old Furnace Removal | $60–$500 |
| Building Permits | $400–$1,500 |
Key Cost Considerations
- Type of Gas Furnace:
- Natural Gas: Requires a connection to a nearby gas main.
-
Propane: Requires a storage tank (purchase or rental).
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Energy Efficiency:
-
High-efficiency models are more expensive but can save on fuel costs and may qualify for a $150 tax credit with ENERGY STAR certification.
-
Home Modifications:
- Chimney or ventilation updates might be required.
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Connecting gas lines to the furnace and other appliances adds cost.
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Climate and Home Size:
- Colder climates and larger homes often need higher-capacity systems, increasing costs.
Gas Furnace vs. Oil Furnace
Advantages of Gas Furnaces
- Cost Savings:
- Average heating costs:
- Gas: $750/year
- Oil: $1,700/year
- Electric: $1,250/year
- Energy Efficiency: Some gas furnaces use up to 98% of energy effectively.
- Lower Emissions: Natural gas and propane produce fewer greenhouse gases than oil.
- Versatility: Gas connections can also power stoves, dryers, and other appliances.
Disadvantages of Gas Furnaces
- Upfront Costs: High installation expenses ranging from $3,800 to $10,000.
- Carbon Monoxide Risks: Requires annual inspections and CO detectors.
- Shorter Lifespan: Gas furnaces last 15–20 years compared to electric systems' 20–30 years.
- Permit Requirements: Installation may require permits, adding $400–$1,500 to the cost.
Cost Comparison: Gas vs. Oil Furnaces
- Switching Benefits: Gas furnaces are cheaper to operate, saving around $950/year compared to oil.
- Break-Even Point: Initial costs can be offset in 3–5 years due to lower annual fuel expenses.
Tips to Save on Conversion Costs
- Bundle Services: Work with contractors who can handle gas line installation, furnace setup, and old furnace removal.
- Check Rebates: Look for energy efficiency tax credits or utility rebates for gas furnace installations.
- Negotiate Installation Costs: Get quotes from multiple HVAC contractors.
- Plan Ahead: Consider switching when your oil furnace is nearing the end of its lifespan to maximize the value of the upgrade.
Replacing your oil furnace with a gas system can be a significant investment, but the long-term savings, environmental benefits, and added convenience make it worth considering.
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