Electricity versus mixed-gas cost over a season

Electricity is usually cheaper than mixed gas for operating a leaf blower over a season, especially when the blower runs for many hours. To compare fairly, calculate the energy used during actual trigger time—not the total time spent gathering leaves—and include fuel, two-cycle oil, charging losses, and any battery replacement cost that applies.

The basic seasonal cost comparison

Use these formulas:

Corded electric blower

Seasonal cost = (watts ÷ 1,000) × operating hours × electricity rate

Cordless electric blower

Seasonal cost = total energy drawn from the wall in kilowatt-hours × electricity rate

If you only know the battery voltage and amp-hour rating, estimate stored energy with:

Watt-hours = volts × amp-hours

Actual wall energy will be higher because charging is not perfectly efficient. The most accurate approach is to measure the charger with a plug-in electricity meter, or use the charger and battery maker's published energy information when available.

Mixed-gas, usually two-cycle, blower

Seasonal cost = gallons of fuel used × fuel price + two-cycle oil used × oil price

Use the fuel-to-oil ratio specified by the blower manufacturer. Do not substitute straight gasoline if the engine requires premixed fuel, and do not assume every gas blower uses the same ratio or fuel recommendation.

What to record before calculating

For one or two representative jobs, record:

• Actual minutes the blower is running
• Number of jobs per week or month
• Weeks in the season
• Electricity price per kilowatt-hour
• Gasoline price per gallon
• Fuel consumed by the gas blower
• Two-cycle oil consumed, if mixed separately

A gas blower's fuel use is easiest to measure by filling the tank to the same level before and after a known amount of work. Avoid estimating from tank size alone. Tank capacity tells you how much fuel the machine can hold, not how quickly it uses it.

For a corded model, check the wattage on the rating label or in the manual. A blower rated at 1,000 watts does not necessarily draw exactly 1,000 watts in every operating condition, but the rating provides a reasonable planning estimate. Variable-speed operation can lower energy use when you spend much of the job at a partial setting.

For a cordless model, count the energy used to recharge every battery during the season. If a battery is recharged twice during a job, count both charges. Charging a battery that still has substantial energy remaining also consumes some electricity, although the exact amount depends on the charger and battery system.

A clearly labeled example

Suppose a homeowner runs a corded blower for 30 minutes per cleanup, 20 times during the season. The operating time is:

0.5 hours × 20 = 10 hours

If the blower's rated input is 1,200 watts, estimated use is:

1.2 kilowatts × 10 hours = 12 kWh

The electricity cost is then 12 multiplied by the household electricity rate.

For a gas blower, suppose the same work consumes a measured amount of mixed fuel. Multiply those gallons by the local fuel price, then add the cost of the two-cycle oil used to prepare that fuel. Because fuel consumption varies substantially by engine size, throttle setting, tube design, and workload, use your own measured gallons whenever possible. The example illustrates the method; it is not a typical cost claim for every blower.

Electricity versus mixed gas: the practical tradeoff

Corded electric

A corded blower has the simplest operating-cost calculation and generally the lowest energy cost. It does not require gasoline storage or two-cycle oil. Its main limitation is the extension cord: large yards, wet conditions, steep terrain, and repeated cord repositioning can make the lower running cost less convenient.

Use an outdoor-rated extension cord of the size recommended by the blower manufacturer. An undersized or damaged cord can heat up and create a safety hazard. Keep connections away from water, and use ground-fault protection where required by local code or the equipment instructions.

Cordless electric

Cordless models avoid fuel mixing and provide more freedom of movement. Their operating cost is still usually based on electricity, but the purchase cost of batteries and chargers can change the long-term calculation. A battery may also lose capacity over time, causing more frequent charging or requiring a replacement.

When comparing a cordless blower with a gas model, include the cost of replacement batteries only if you expect to buy one during your ownership period. Divide that cost by the number of seasons you expect it to last for a rough annual ownership estimate. Battery life depends on storage, temperature, charging habits, workload, and the battery system, so avoid treating a published cycle figure as a guaranteed service life.

Mixed-gas

Gas blowers can provide long working sessions with quick refueling, which may matter on large properties or during heavy wet-leaf cleanup. Their seasonal energy cost includes gasoline and oil, and the engine may also require maintenance such as spark-plug, air-filter, and fuel-system service.

Old or improperly mixed fuel can cause starting and running problems. Follow the manual for fuel freshness, storage, oil ratio, and any fuel stabilizer requirements. Never mix fuel or refuel near flames, sparks, or a hot engine, and operate gas equipment outdoors.

Finding the break-even point

To estimate how much use makes one option cheaper, first calculate each machine's cost per operating hour.

• Electric cost per hour = watts ÷ 1,000 × electricity rate
• Gas cost per hour = gallons per hour × fuel price, plus oil cost per hour

Then divide any additional purchase or battery cost by the difference in hourly operating cost. This gives an approximate break-even number of operating hours. If the difference is very small, convenience, noise, maintenance, cord management, and emissions may matter more than energy price.

For a complete ownership comparison, use:

Purchase cost + seasonal energy cost + maintenance and consumables + likely replacement parts

Do not compare only the price of electricity with the price of gasoline. A corded blower may need a suitable extension cord, a cordless blower may need a battery and charger, and a gas blower may need oil and periodic maintenance.

Which cost matters most for your yard?

For a small yard with occasional cleanup, the seasonal energy difference may be modest. Choose based on storage, noise, startup convenience, and whether a cord is practical. For frequent cleanup or a larger property, measure actual fuel or electricity use for several jobs; the resulting cost per hour will be more useful than a generic estimate.

If a cordless blower's runtime is too short, first check whether the battery is fully charged, the filter and air inlets are clear, and the blower is being run continuously at maximum power. If a gas blower suddenly uses much more fuel, inspect the air filter, fuel condition, and operating technique according to the manual. Persistent poor running, fuel leaks, damaged cords, overheating, or electrical faults should be handled by a qualified repair professional or addressed with a replacement unit.