Your HVAC system plays a vital role in keeping your home comfortable year-round—but like any major appliance, it won’t last forever. At Thompson Electrical Company, we’ve helped homeowners in Bristol, Johnson City, and Kingsport recognize when it’s time to stop repairing an aging system and start planning for a replacement.
Not sure if your system is nearing the end of its life? Here are the top signs that it’s time to consider a new HVAC installation.
1. Frequent Breakdowns and Repairs
If you’re calling for repairs more often than not, your HVAC system may be trying to tell you something. Repeated breakdowns—especially if they happen even with regular maintenance—are a strong indicator that internal components are wearing out.
Over time, clogged filters and deteriorating parts can create a domino effect, leading to failure in other sections of the system. If your HVAC is becoming a money pit, replacing it can save you time, stress, and future repair costs.
2. Odd Smells from Vents or Units
Unpleasant odors coming from your vents can range from mildly annoying to downright alarming. Musty smells could point to mold growth in your ductwork, while burnt or chemical-like odors may be signs of overheating components or failing electrical wiring.
If strange smells persist—even after a professional cleaning—it may be time to consider replacing the unit altogether. Don’t ignore serious smells. Turn the system off and schedule an inspection right away.
3. HVAC Age: 15 Years and Up
Even with top-tier care, HVAC systems aren’t built to last forever. Once your unit hits the 15–20 year mark, it’s on borrowed time. Older systems tend to operate less efficiently, experience more wear and tear, and may not be compatible with today’s advanced thermostats or eco-friendly refrigerants.
If your system is reaching this age range, start budgeting for a replacement and ask our technicians about the newest high-efficiency models available.
4. Rising Utility Bills Without a Change in Usage
Have your energy bills spiked even though your household habits haven’t changed? That’s a red flag. As systems age, they often lose efficiency and require more energy to produce the same results.
If your electric bills are climbing and you’re still feeling too warm in summer or too cold in winter, your HVAC could be running harder than it should—or failing altogether.
5. Strange Noises That Won’t Go Away
It’s normal for your HVAC to make a gentle hum when it’s running, but if you start to hear clanking, rattling, buzzing, or screeching, something’s not right. These sounds often mean loose parts, failing motors, or internal damage.
Ignoring these warning signs can lead to major system failure. If the noises are persistent or getting worse, it may be more cost-effective to replace the entire unit.
Don’t Wait Until It Fails — Plan Ahead
If your HVAC system is showing one or more of these signs, don’t wait for a complete breakdown during a heat wave or cold snap. At Thompson Electrical Company, our licensed technicians provide honest assessments and expert recommendations for homeowners throughout Bristol, Johnson City, and Kingsport.
We can help you explore energy-efficient options that improve your comfort and reduce monthly costs—and handle installation from start to finish.
Call us at (423) 840-7457 to schedule a system evaluation or get a quote for a new HVAC installation today.
