A brand-new furnace shouldn't be excessively noisy. If it sounds like a wind tunnel, rattles, or buzzes, it is likely due to airflow restrictions, incorrect blower motor speeds, unbalanced fan wheels, or loose installation panels.
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.
The "$5,000 rule" is a quick, rough guideline to help homeowners decide whether to repair an aging furnace or replace it entirely. It helps you determine if pouring money into an old system is a waste of cash, or if it still has plenty of life left.
To make your furnace quieter, start by replacing a dirty air filter and ensuring vents are open. For lasting relief, clean the blower motor, insulate the furnace closet, decouple the unit from the floor using rubber pads, or replace metal duct connectors with flexible acoustic ducting.
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.
Yes, it is perfectly normal to hear your furnace kick on. You should generally hear soft operational sounds, but the volume and type of noise depend on your specific system.
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.
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.
For example, the Lennox SLP98V Variable-Capacity Gas Furnace is at least 50 percent quieter than competitor's furnaces, making the SLP98V gas furnace the quietest furnace you can buy1. SilentComfort™ is achieved by utilizing variable-speed technology.
To stop hearing voices through your vents, block the direct path of the sound waves. You can easily achieve this by installing a Magnetic Vent Cover or inserting an acoustic baffle inside the duct, which absorbs sound while still allowing limited airflow.
The best months to buy a furnace are May (late spring) or September (early fall). During these off-season months, heating demand is low, making it easier to negotiate discounted prices, avoid emergency premiums, and secure flexible installation schedules.
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.
A standard furnace lasts between 15 and 20 years on average, though electric furnaces can stretch up to 20 to 30 years. Regular maintenance, such as annual tune-ups and changing your filters every 1 to 3 months, is the most important factor in reaching or exceeding this lifespan.
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.
Unlike the normal low hum, a loud humming can indicate a problem with your furnace fan or capacitor. These components are checked during an annual service tune up, but if you skipped that this year, loud humming warrants a call to us. While a click is normal when your furnace kicks on, a continual clicking is not.
Try do-it-yourself steps
Change air filter if you hear whistling or whooshing. Look for holes in the ductwork and plug them to stop a whistling sound. Screw a metal plate over a weak area in the ductwork to stop a banging sound. Use a screwdriver, duct tape, or padding to secure rattling ducts.
To make your furnace quieter, start by replacing a dirty air filter and ensuring vents are open. For lasting relief, clean the blower motor, insulate the furnace closet, decouple the unit from the floor using rubber pads, or replace metal duct connectors with flexible acoustic ducting.
The top five residential furnace brands, based on industry consensus, reliability, and user satisfaction, are Trane, Carrier, Lennox, Goodman, and American Standard.
The quietest central HVAC brands are Carrier and Trane, both of which feature ultra-quiet inverter compressors and specialized sound-dampening insulation. If you are open to ductless mini-splits, Mitsubishi operates virtually silently.
If your furnace suddenly produces loud, sudden banging or booms, you should call an experienced technician as soon as possible. These sounds could indicate stuck ignition, a potentially dangerous situation involving carbon monoxide which is deadly.
Stoves and cooktops are the number one appliances that cause house fires, accounting for the vast majority of all residential cooking fires. Unattended cooking and splattering grease are the primary causes.
Once the heat exchanger reaches a specific temperature, you'll hear the blower come on. You may hear a fairly loud noise just as the burners light. However, the furnace shouldn't make an overly loud booming sound.
When turned on, normal furnace noises include the humming of the blower motor as it pushes warm air into your ductwork, the soft whoosh of burners igniting on and off, and other subtle noises as various components work together to create heat. These things should sound familiar, comforting even.
In general, you can expect your furnace to cycle (on-off) about 3 to 8 times per hour in cold weather. Several factors determine how often the furnace cycles on in winter. The key factor is the outdoor temperature and the heat loss rate of your home.
The most expensive thing to fix on a furnace is the heat exchanger. Replacing it typically costs between $𝟏,𝟎𝟎𝟎 and $𝟑,𝟓𝟎𝟎, primarily because it is a highly labor-intensive job that involves virtually dismantling the entire unit.