A new Trane furnace may be loud due to incorrect blower motor speeds, undersized or vibrating ductwork, or missing shipping bolts. Because modern high-efficiency systems move more air, proper installation and airflow adjustments are critical to keeping noise levels in check.
Trane, alongside six other major HVAC manufacturers, is currently facing a sweeping federal antitrust class action lawsuit filed in Michigan. The lawsuit (Berg v. Bosch et al.) alleges that the companies conspired to artificially inflate the prices of residential and commercial HVAC equipment beginning in January 2020, utilizing supply chain disruptions to obscure anti-competitive practices.
The most likely reason why your new furnace is noisier than your old furnace is because your new furnace is more efficient than your old furnace. The sound that you are hearing could simply be more airflow.
Loud furnace noises usually point to wear, dirt buildup, or airflow issues. Certain sounds — like banging or whistling — can signal serious risks. Regular maintenance keeps your furnace quiet and extends its lifespan. Shut the system off immediately if you suspect gas or electrical issues.
Trane furnaces are widely considered quiet and are designed with sound-dampening technology, such as insulated cabinets and variable-speed blowers to minimize operational noise. High-end models, such as the Trane S9V2-VS, are engineered for nearly silent, high-efficiency operation.
Your New HVAC Unit is Moving More Air Than Your Old System
High-efficiency systems are often more powerful – meaning yours may be moving more air through your vents than your old one did. That increased airflow can create more noise, especially if your ductwork wasn't designed for that higher output.
With insulated compressors and innovative fan systems, Trane units are some of the quietest on the market, operating at noise levels as low as 55 decibels, depending on the model. While Carrier systems are also designed to minimize noise, Trane units tend to be quieter overall, especially with their higher-end models.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
In short — yes, it can be. A buzzing furnace often points to electrical issues, loose parts, or airflow problems inside your home's heating system. While some noises are harmless, others could mean your furnace is at risk of system failure, a fire hazard, or even a gas leak.
To quickly make your furnace quieter, start by replacing a clogged air filter and ensuring no more than 20% of your home's air vents are closed. For deeper fixes, check the blower motor for debris, secure any loose metal panels, and lubricate the motor bearings if needed.
Your furnace may be blowing cold air due to a dirty air filter, thermostat issue, pilot light failure, or a problem with the flame sensor or gas supply.
Newer units come with insulated cabinets, quieter motors, and burners that ignite more softly. These features weren't common in older models, so homeowners upgrading their furnace often feel surprised by how quiet the new system is.
Gas furnaces, while reliable, can develop common issues over time, such as wear from rust, clogged air filters, and stress on ignition and burner components. Regular furnace maintenance can help prevent these problems from escalating.
If you want to pin us down to a generalized answer it would be 15-20 years. That lifespan can be significantly shortened if the furnace doesn't receive regular maintenance, was improperly installed, or is a furnace that doesn't use top-of-the line materials. Kotz is proud to be a Trane Comfort Specialist dealer.
Trane is owned by Trane Technologies, a global climate innovation and manufacturing company.
The best time to buy a furnace is during the off-season, specifically late spring (April-May) or early autumn (September-October), when HVAC companies are less busy and offer lower prices, rebates, or promotions. Purchasing in these shoulder seasons ensures faster installation times and better negotiating power compared to winter peak season.
However, with the passage of the new budget, homeowners now have until the end of 2025 to take advantage of the HVAC tax credits, which include: $2,000 for a qualified heat pump. $600 for a qualified air conditioner. $600 for a qualified gas furnace.
The "two-foot rule" in HVAC is a duct design and installation guideline that requires a minimum of 24 inches of straight, uninterrupted space between branch take-offs (where air taps off the main trunk). It is also applied to spacing branches away from end caps, transitions, and the main plenum.
Your furnace is likely loud because of a clogged filter, worn-out motor bearings, or loose metal panels. The specific sound it makes can help you pinpoint the exact issue.
A properly functioning furnace should operate quietly, measuring between 40 and 60 decibels—about the volume of a quiet conversation or a refrigerator humming. You should only hear a gentle "whoosh" of air or a soft blower hum.
If you'd like to calculate your ideal HVAC fan runtime, here's a simple formula: Measure the square footage of your home. Divide the square footage by 2. This number represents the number of minutes your HVAC fan should run per hour.
Trane S9V2-VS – Considered the quietest furnace of the bunch, this gas-powered unit features Trane's patented Vortica II blower nestled inside a steel insulated cabinet to ensure minimal noise.
Trane achieved the highest Net Trust Quotient score (113.7) among top HVAC brands and also was ranked the #2 5-star Thermostat Brand in America's Most Trusted Study for the sixth consecutive year.
Trane’s primary competitors are major HVAC and building automation manufacturers, led by Carrier Global, Daikin, Lennox International, and Johnson Controls (York). These companies dominate both residential heating and cooling and large-scale commercial climate control systems.