What does CFM actually mean, in practical terms?

CFM stands for cubic feet per minute, the volume of air the blower moves. A blower rated at 650 CFM, like the EGO LB6504 or Ryobi Whisper Series, is moving significantly more air per minute than one rated at 340 CFM, like the Greenworks. Higher CFM matters most for heavy, wet, or large-volume debris.

Is a higher voltage battery always better?

Not automatically. Voltage (40V, 56V, and so on) affects potential power output, but actual performance also depends on motor design, battery amp-hour capacity, and how the manufacturer tunes the system. The EGO's 56V platform and Ryobi's 40V platform both reach 650 CFM despite the voltage difference, so compare CFM and runtime directly rather than voltage alone.

How much does battery amp-hours (Ah) affect runtime?

Directly and significantly. A 4.0Ah battery holds roughly double the capacity of a 2.0Ah battery on the same platform, translating to roughly double the runtime at the same power draw. The EGO LB6504's included 5.0Ah battery is a meaningful factor in its 75-minute runtime rating.

What decibel range should I look for if noise is a concern?

Standard cordless blowers typically run somewhere in the 65 to 75 dB range at operator's ear during normal use, higher at turbo settings. Models specifically marketed around reduced noise, like the Ryobi 40V Whisper Series, are designed to run toward the lower end of that range or below it. Gas blowers commonly run 75 to 90-plus dB.

Leaf Blowers Buying Guide: CFM, MPH, Batteries, and What Actually Matters

A deeper look at leaf blower specs, CFM versus MPH, battery voltage and runtime, corded versus cordless economics, and noise ratings, so you can compare listings accurately before buying.

Leaf blower listings throw a lot of numbers at buyers, CFM, MPH, voltage, amp-hours, decibels, without much explanation of which ones actually predict real-world performance.

This guide breaks down each spec individually, what it measures, why it matters, and how to weigh it against price, so you can compare listings accurately rather than defaulting to whichever number looks biggest.

CFM vs. MPH: What Each One Actually Tells You

CFM (cubic feet per minute) measures the volume of air moved. This is the number that predicts how well a blower handles heavy, wet, or large piles of debris. The Toro PowerJet F700's 725 CFM is the highest in this category, and it shows most clearly on wet leaf piles that lighter blowers struggle to move.

MPH (miles per hour) measures how fast the air stream travels. Higher MPH helps push light, dry debris further in a single pass but doesn't predict performance on heavy or matted debris the way CFM does.

When comparing two blowers, CFM is generally the more useful number for predicting real-world capability, especially for anything beyond light, dry leaves.

Battery Voltage and Amp-Hours

Voltage (40V on Ryobi and Greenworks, 56V on EGO) reflects the battery system's design, not a direct performance guarantee on its own. What matters more in practice is the combination of voltage, motor design, and battery amp-hour (Ah) rating.

Amp-hours directly determine runtime. A 5.0Ah battery, like the one included with the EGO LB6504, holds meaningfully more charge than a 2.0Ah or 4.0Ah battery on the same platform, translating to longer runtime at the same power draw.

When comparing cordless blowers, look at the actual CFM rating and the actual runtime figure (usually listed in minutes), rather than assuming a higher voltage number alone means a better blower.

Corded vs. Cordless: The Real Cost Comparison

A corded blower like the Toro PowerJet F700 has no battery to buy, charge, or eventually replace. Over several years, that avoids a real recurring cost, cordless tool batteries typically lose meaningful capacity after 3 to 5 years of regular use and need replacement.

A cordless blower trades that long-term cost for convenience: no cord to manage, no outlet dependency, and often a shared battery platform across other yard tools you may already own.

For a household already invested in a battery platform, cordless is usually the more convenient long-term choice. For a first leaf blower purchase on a tight budget, corded delivers more raw performance per dollar upfront.

Noise Ratings

Decibel (dB) ratings aren't always prominently listed, but they matter for anyone with close neighbors or who does yard work early or late in the day. Standard cordless blowers typically run in the 65 to 75 dB range during normal use. Models built specifically around noise reduction, like the Ryobi 40V Whisper Series, run quieter at matched CFM output.

Gas blowers commonly exceed 75 to 90 dB, part of why many municipalities and HOAs now restrict gas blower hours specifically, while cordless electric models rarely face the same restrictions.

Weight and Ergonomics

Handheld blower weight in this category ranges from roughly 5 to over 6 lbs with a battery installed. That range feels small on paper but adds up over a 30 to 60 minute session, especially for elevated or one-handed work like gutter cleaning.

A cruise control or trigger lock feature, like the one on the Ryobi Whisper Series, reduces the physical demand of a long session independent of the blower's actual weight.

Warranty Coverage

Warranty length varies more than most buyers expect in this category, from 1 year on typical budget cordless tools to 5 years on the EGO LB6504's tool warranty. For a seasonal tool that may sit unused for months at a time, a longer warranty is a meaningful hedge against defects that don't surface immediately.

Spec Comparison Quick Reference

Spec	Low end in this category	High end in this category
CFM	340 (Greenworks)	725 (Toro F700)
Runtime	Varies by battery	Up to 75 min (EGO)
Weight	Lighter, corded (Toro)	~6.2 lbs (EGO)
Tool warranty	1 year (Ryobi)	5 years (EGO)
Typical price	Under $100 (Toro)	$150 to $180 (EGO)

Check price on Amazon, Toro PowerJet F700