3 Signs It’s Time to Replace Your Old Furnace with a Mini Split
If your home still relies on an aging furnace, you may be wondering if it’s time to upgrade—and what the best alternative is. Many Missouri homeowners are switching from traditional furnaces to mini split systems. Here are three key signs that it might be your turn too.
9/6/20251 min read
1. Your Furnace Is Over 15 Years Old
Most furnaces last between 15 and 20 years, but efficiency often drops well before that. If your system is nearing that age—or already past it—you could be spending more money than you need to just to stay warm.
Warning signs of age:
System runs constantly to maintain temperature
Rising heating bills year after year
Trouble heating certain rooms evenly
Frequent repairs or loud noises
Mini splits, on the other hand, offer 15 to 20+ years of efficient heating, and they don’t rely on ductwork that loses energy.
2. You’re Facing an Expensive Repair
Blower motors, heat exchangers, and control boards are all costly components. If your furnace repair quote is over $1,000, it may be smarter to invest in a long-term solution.
Mini split systems not only eliminate the need for a central furnace—they also provide cooling in summer with the same system.
Dual function = better return on investment
And with energy efficiency up to 300%, your long-term utility savings can pay back the cost difference over just a few winters.
3. Your Ductwork Is Failing or Missing
Leaky, poorly insulated ducts waste up to 30% of heated air (source: U.S. Department of Energy). And in older homes, duct systems often weren’t designed for modern HVAC.
Mini splits don’t use ducts, so you skip all that hassle. They’re ideal for:
Older homes
Remodels and additions
Homes with allergy concerns (no dusty ducts)
Many Missouri homes—especially those built before 1970—are perfect candidates for a ductless upgrade.
Bonus: Winter Performance
Today’s cold-climate mini splits heat effectively down to -13°F, making them fully capable of handling Missouri’s toughest winters.
They also offer zone control, allowing you to heat only the rooms you use. That can slash your heating costs and increase comfort.
Final Thought
Replacing your furnace is a big decision—but mini splits offer year-round comfort, long-term savings, and room-by-room control that traditional heating can’t match.
Ready for a free assessment? Global Kingdom Contracting will help you decide whether a mini split system is the right next step for your home. Call 636-222-3509 today.