80% vs 90% Furnace — What’s the REAL Difference (and What Repairs can Cost You)

Описание: What’s the difference between an 80% and a 90% furnace? And why can replacing all the parts inside one cost nearly $9,000?

In this video, Yarbrough & Sons Heating, Cooling & Plumbing breaks down two furnaces that look similar—but perform very differently. We’ll show you:
✅ How efficiency ratings actually work (80% vs 90%)
✅ The key parts that make high-efficiency furnaces more expensive
✅ Common repair costs for motors, gas valves, igniters, and more
✅ When it’s better to replace your system instead of repairing it

If you’re wondering whether a high-efficiency furnace is worth it—or which one makes sense for your home—this is your complete guide.

🔥 Get an instant estimate for a new system in under 45 seconds: https://estimate.yarbroughandsons.com

00:00 - Introduction to 80% vs. 90% Furnaces
00:21 - Understanding Furnace Efficiency Ratings
00:51 - Upflow vs. Downflow Furnace Explained
01:13 - Disassembling Both Furnaces
01:48 - Part Comparison: Condensate Trap
02:43 - Part Comparison: Control Board & Door Switch
04:52 - Part Comparison: Transformer
06:05 - Part Comparison: Blower Assembly & Motor
08:44 - Part Comparison: Gas Valve
09:48 - Part Comparison: Igniter
11:17 - Part Comparison: Limit & Rollout Switches
12:46 - Service & Estimate Information
13:22 - Part Comparison: Pressure Switches
14:06 - Part Comparison: Flame Sensors
15:46 - Part Comparison: Inducer Motors
17:58 - Part Comparison: Burner Assembly
18:54 - Part Comparison: Heat Exchangers
21:11 - The Importance of Maintenance & Air Filters
23:30 - Why an 80% Furnace Might Be Better for Attics
24:44 - Cost to Replace a Heat Exchanger
26:36 - Final Thoughts & Summary