Worx vs Greenworks Patio Heater
Choosing between a Worx and a Greenworks patio heater comes down to understanding battery ecosystems, heat output, and design. This comparison breaks down the key differences to help you decide which cordless heater fits your outdoor space.
Quick answer
The Greenworks 40V Patio Heater wins for higher heat output and longer runtime on a single charge, making it better for larger patios. The Worx 20V Heater is lighter and more portable, ideal for small balconies or camping, but requires a larger battery for decent performance.
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Research updated June 2026.
| Specification | Worx 20V Patio Heater (WG529) | Greenworks 40V Patio Heater |
|---|---|---|
| Voltage | 20V (max) | 40V |
| Heat Output (BTU) | 5,000 - 7,000 | 10,000 - 12,000 |
| Runtime (4.0Ah battery) | 1 - 2 hours | 2 - 3 hours |
| Weight (heater only) | 5.5 lbs | 7.8 lbs |
| Coverage Area | Up to 50 sq ft | Up to 100 sq ft |
| Heat Settings | 2 (Low/High) | 3 (Low/Med/High) |
| Ignition | Push-button | Push-button |
| Battery Included | No (tool only) | No (tool only) |
| Warranty | 3 years | 4 years |
| Best For | Portability, small spaces | Higher heat, larger patios |
Worx vs Greenworks Patio Heater: Which One is Right for You?
Both Worx and Greenworks offer cordless patio heaters that free you from gas tanks and extension cords. However, they target different needs. The Worx WG529 is a compact, lightweight heater that runs on the popular 20V Power Share platform. It is easy to move around and store, making it a good fit for balconies, camping trips, or small decks. Owner reviews on Amazon often praise its portability but note that runtime is limited, especially on the high setting.
The Greenworks 40V heater is a more powerful machine. It uses the larger 40V battery platform, which provides more voltage for higher heat output and longer runtimes. This heater can warm a larger area, making it suitable for medium-sized patios or backyard gatherings. Reviews highlight its ability to produce noticeable heat even in cooler weather, but the unit is heavier and the batteries are more expensive to replace.
Heat Output and Coverage
The most significant difference is heat output. The Worx heater produces between 5,000 and 7,000 BTUs. This is enough to take the chill off for one or two people sitting close by, but it will not heat a large area. The Greenworks heater delivers 10,000 to 12,000 BTUs, which is roughly double the heat. This allows it to warm a larger area, up to 100 square feet, and feel effective even when the temperature drops lower.
For a small balcony or a single chair, the Worx is adequate. For a family patio or entertaining guests, the Greenworks is the better choice. The Greenworks also offers three heat settings (low, medium, high) versus the Worx's two, giving you more control over the temperature.
Battery and Runtime
Both heaters are sold as tool-only, meaning you need to own a compatible battery and charger from the same brand. The Worx uses the 20V Power Share battery, which is shared with a huge range of Worx tools. A standard 4.0Ah battery will run the Worx heater for about 1 to 1.5 hours on high. On low, you might get up to 2 hours. Many owners recommend using a 5.0Ah or larger battery for better runtime.
The Greenworks 40V heater uses a higher voltage battery. A 4.0Ah 40V battery provides significantly more watt-hours than a 4.0Ah 20V battery. This translates to longer runtime. Expect around 2 to 2.5 hours on high and up to 3.5 hours on low. The Greenworks platform is also shared with many outdoor tools like string trimmers and blowers. If you already own tools from either brand, the choice becomes much easier.
Portability and Build Quality
The Worx heater is lighter at 5.5 lbs and has a more compact design. It is easier to carry and can be placed on a table or the ground. Its build quality is decent for the price, but some owner reviews mention the plastic housing feels less robust. The Greenworks heater is heavier at 7.8 lbs, partly due to the larger battery and more substantial heating element. It feels more solidly built and is designed to stand on the floor. Both heaters have a tip-over safety switch and a cool-touch exterior.
What to Check Before Buying a Cordless Patio Heater
Before you choose between these two, consider these factors:
- Battery Ecosystem: If you already own Worx 20V or Greenworks 40V tools, stick with that brand to save on battery costs.
- Patio Size: Measure your space. The Worx is for small, personal use. The Greenworks can handle a standard 8x10 foot patio.
- Runtime Needs: How long do you need the heater to run? The Greenworks offers longer runtime per charge.
- Portability: If you need to move the heater frequently or take it camping, the lighter Worx is better.
- Heat Sensitivity: If you need serious warmth on a cold night, the Greenworks is the only real option.
Mistakes to Avoid
Do not assume a smaller battery will work well. Using a 2.0Ah battery on either heater will result in very short runtime, possibly under 30 minutes. Always use a 4.0Ah or larger battery. Also, do not expect either heater to replace a propane patio heater for extreme cold. These are for taking the edge off, not for heating an uninsulated space in winter. Finally, check the return policy. Some users find the heat output insufficient and return the unit.
Price and Value
Both heaters are similarly priced when purchased as tool-only. The real cost is in the batteries and chargers. A Worx 20V 4.0Ah battery and charger kit is generally less expensive than a Greenworks 40V 4.0Ah kit. However, the Greenworks offers better performance per dollar spent on the battery. If you need to buy into a battery system from scratch, the Worx platform is cheaper to enter, but the Greenworks gives you a more capable heater.
FAQs
Can I use a Worx 20V battery in a Greenworks heater?
No. Worx and Greenworks batteries are not compatible. They use different voltage systems and physical connectors.
Which patio heater has longer runtime?
The Greenworks 40V heater offers longer runtime, typically 2-3 hours on high with a 4.0Ah battery, compared to 1-2 hours for the Worx.
Is the Greenworks patio heater worth the extra cost?
If you have a larger patio or need more heat, yes. The higher BTU output and longer runtime justify the higher battery investment.
Can I use these heaters indoors?
No. Both are designed for outdoor use only. Using them indoors poses a fire risk and is not recommended by the manufacturers.
Do these heaters come with a battery?
Both are typically sold as tool-only. You need to purchase a battery and charger separately, or buy a kit if available.
Which brand has a better warranty?
Greenworks offers a 4-year warranty on the heater, while Worx offers a 3-year warranty. Both are standard for cordless outdoor tools.
How do I clean a cordless patio heater?
Wipe the exterior with a damp cloth. Do not use harsh chemicals. Ensure the heater is off and the battery is removed before cleaning.
Can I leave the heater outside in the rain?
No. Both are not waterproof. Store them in a dry place or use a cover when not in use to protect from moisture.
Which heater is better for camping?
The Worx heater is lighter and more portable, making it the better choice for camping or tailgating where weight matters.
Does the Greenworks heater have a tip-over switch?
Yes. Both the Worx and Greenworks heaters include a tip-over safety switch that automatically shuts off the heater if it is knocked over.
Our verdict
For most people, the Greenworks 40V Patio Heater is the better choice due to its higher heat output and longer runtime. It is the best overall for warming a standard patio. The Worx 20V heater is the best budget and portable option for small spaces or occasional use, especially if you already own Worx 20V tools.