Noise is one of the most underrated factors in choosing a leaf blower. It affects your hearing, your neighbours' patience, and in many Canadian municipalities, whether you can legally use the tool at certain hours. If you've ever been on the receiving end of a gas blower at 7:30am on a Sunday, you understand why noise matters.
Here's how battery leaf blowers compare to gas on noise, what the decibel numbers actually mean, and why it matters more than most people think.
Understanding Decibels: A Quick Primer
Decibels (dB) measure sound intensity on a logarithmic scale. That means every increase of 10 dB represents a tenfold increase in sound intensity — not a small bump. Here are some reference points to put blower noise in context:
50 dB — quiet conversation at home. 60 dB — normal conversation. 70 dB — running dishwasher or shower. 80 dB — busy street traffic. 85 dB — sustained exposure at this level can cause hearing damage. 90 dB — lawn mower (gas). 100+ dB — gas leaf blower at full throttle. 110 dB — rock concert, approaching pain threshold.
The critical number is 85 dB. Above that threshold, prolonged exposure causes permanent hearing damage. Most gas leaf blowers operate well above it.
Gas Blower Noise Levels
A typical residential gas leaf blower produces between 90 and 100 dB at the operator's ear. Commercial backpack gas blowers often exceed 100 dB. At these levels, hearing protection isn't optional — it's medically necessary. Even with earplugs or muffs, you're exposing yourself and everyone nearby to significant noise pollution.
The noise isn't just an operator problem. Gas blowers are audible from hundreds of metres away. Neighbours, pets, sleeping children, and anyone working from home can hear a gas blower from several houses down. This is why noise bylaws exist.
Battery Blower Noise Levels
Battery leaf blowers are dramatically quieter. Most operate between 60 and 75 dB depending on the model and power setting. Even at full power, premium battery blowers rarely exceed 75 dB — roughly the volume of a running vacuum cleaner inside your home.
The Greenworks 24V Brushless Blower operates at the quieter end of the spectrum, making it ideal for early morning cleanups, condo and townhome communities, and anyone who lives close to their neighbours.
Even the most powerful battery blower in the Greenworks lineup — the 80V 700 CFM Brushless Blower delivering 700 CFM at 170 MPH — operates at noise levels well below a comparable gas blower. You get gas-beating performance without gas-level noise.
Variable Speed: Quieter When You Don't Need Full Power
One of the underappreciated advantages of battery blowers is variable speed control. At lower speeds, noise drops substantially — often into the low 60 dB range. Since most yard cleanup doesn't require full power, you can run the blower at a comfortable, conversational-level volume for the majority of the job and only punch turbo mode for heavy or wet debris.
Gas blowers have throttle controls too, but even at idle they're louder than most battery blowers at full power. The baseline noise floor of a combustion engine is simply much higher than an electric motor.
Canadian Noise Bylaws
Many Canadian municipalities have noise restrictions that affect when and how you can use yard equipment. Toronto, for example, restricts noise from power equipment before 9am on weekdays and before 10am on weekends and holidays. Ottawa, Vancouver, Calgary, and Montreal have similar bylaws with varying time windows.
Battery blowers generally fall well below municipal noise thresholds, meaning you can often use them earlier in the morning and later in the evening without violating bylaws. Some municipalities that have banned or restricted gas blowers specifically exempt battery-powered equipment. This is a practical advantage that gives you more flexibility in when you can do yard work.
Hearing Health Over Time
This is the part most people overlook. A single mowing or blowing session at 95 dB probably won't cause permanent damage if you're wearing hearing protection. But cumulative exposure over years of weekly yard work absolutely can. Noise-induced hearing loss is gradual, painless, and irreversible.
Switching to a battery blower that operates at 65 to 75 dB removes this risk entirely. You don't need hearing protection at those levels. You can hear traffic, doorbells, children, and conversations while you work. It's a quality-of-life improvement that compounds every single time you use the tool.
The Bottom Line
Battery blowers are 15 to 30+ decibels quieter than gas blowers. On a logarithmic scale, that represents a difference in sound intensity of 30 to 1,000 times. They're easier on your ears, easier on your neighbours, and compliant with virtually every Canadian noise bylaw. And thanks to tools like the Greenworks 80V 700 CFM, you no longer have to sacrifice power to get that quiet operation.