Summary
- Gas furnaces are more suitable for cold climates, providing faster heating and lower long-term operating costs, while electric furnaces are better for mild climates and have a lower upfront installation cost.
- Gas furnaces have a higher efficiency rating (up to 99% AFUE) compared to electric furnaces which have 100% efficiency with no combustion loss.
- Installation costs for gas furnaces range from $7,000–$10,000, while electric furnaces cost between $3,000–$6,000.
- Electric furnaces are quieter and require minimal maintenance, whereas gas furnaces need more upkeep and have a shorter lifespan (15–20 years) compared to electric models (20–30 years).
- Homeowners should consider existing gas lines, climate conditions, potential solar installations, and noise preferences when deciding between gas and electric furnaces.
Trying to Decide Between Gas or Electric? Here’s What You Need to Know
If you’re shopping for a new furnace, one question always comes up: Should I go with gas or electric? Lennox makes high-performance models for both, but the right choice really depends on your climate, utility rates, and how long you plan to stay in your home.
Let’s walk through the pros, cons, and real-life savings of each type—so you can make a decision with confidence.
Gas vs Electric: What’s the Real Difference?
Gas Furnaces burn natural gas or propane to generate heat. They’re fast, powerful, and designed for serious winter climates.
Electric Furnaces use heated coils—kind of like a giant hairdryer. They’re simpler, cleaner, and quieter.
Lennox Models: Gas vs Electric at a Glance
| Feature | Lennox Gas Furnace | Lennox Electric Furnace |
|---|---|---|
| Heating Power | Strong for cold winters | Weaker in sub-zero temps |
| Efficiency | Up to 99% AFUE (SLP99V) | 100%—no combustion loss |
| Monthly Cost to Run | Lower (cheaper fuel) | Higher (electric rates) |
| Noise Level | Quiet to ultra-quiet | Whisper silent |
| Installation Cost | $7K–$10K installed | $3K–$6K installed |
| Maintenance | Needs more upkeep | Minimal maintenance |
| Lifespan | 15–20 years | 20–30 years |
| Best For | Cold regions, big homes | Mild climates, small homes |
Climate: The Deciding Factor
Live in the North or Midwest?
Go gas. You’ll get faster heating and save money in the long run.
Live in the South or West Coast?
Electric could be a better fit—especially in mild winters or newer all-electric homes.
Cost Breakdown: Upfront vs Long-Term
Initial Installation:
-
Gas furnace: $7,000–$10,000
-
Electric furnace: $3,000–$6,000
Monthly Bills (2,200 sq ft home):
-
Gas: ~$700–$1,000/year
-
Electric: ~$1,200–$1,800/year
Bottom Line:
Electric is cheaper upfront. Gas wins on long-term operating costs—especially if you use your furnace heavily.
Which One Is Right for You?
Ask yourself:
-
Do I already have a gas line?
If not, electric is more practical. -
How cold does it get here?
Colder climates = gas is more efficient. -
Do I plan to install solar soon?
Electric pairs better with home solar setups. -
Do I want the quietest possible unit?
Electric models are nearly silent.
FAQs: What Homeowners Are Asking
Q: Is one type safer than the other?
Both are safe when professionally installed, but electric has no combustion or carbon monoxide risks.
Q: Can I switch from electric to gas (or vice versa)?
Yes, but it may require upgrades to your electric panel or gas piping.
Q: What about dual-fuel systems?
Lennox offers hybrid setups—gas + heat pump—so you get the best of both worlds.
Q: Are there rebates for either type?
Yes. ENERGY STAR models (gas or electric) often qualify for local or federal incentives.
Final Thoughts
If you’re after long-term energy savings, live in a cold climate, and already have gas—go with a Lennox gas furnace like the SLP99V or EL296V.
If you’re in a mild region or want a lower upfront cost, an electric model could be your best bet.
Both have their place. It just depends on what your home—and budget—need most.
More on Lennox – Here
- The 5 Quietest Ductless Heating Systems of 2026 (Tested in Real Homes) - November 18, 2025
- How Ductless Heating Works (And Why It’s Taking Over Homes in 2025) - November 18, 2025
- The 7 Best Ductless Heating Systems of 2025 (Ranked by Performance, Cost & Efficiency) - November 18, 2025