ASNUG Space Heater vs Comfort Zone CZ45E 750/1,500-Watt Fan-Forced
Updated August 2026 — ASNUG Space Heater wins on portability and noise level, Comfort Zone CZ45E 750/1,500-Watt Fan-Forced wins on safety features and energy efficienc.
The ASNUG Space Heater is a more economical choice, while the Comfort Zone CZ45E offers versatile heating options. Choose based on your specific needs.
Why ASNUG Space Heater is better
Lower Price
ASNUG is priced at $19.99 compared to CZ45E's $26.19.
Compact Size
ASNUG is smaller at 6.1 x 5.75 x 2.87 inches.
Quiet Operation
ASNUG is designed for minimal noise, ideal for bedrooms.
Why Comfort Zone CZ45E 750/1,500-Watt Fan-Forced is better
Higher BTUs
CZ45E delivers 5,120 BTUs for powerful heating.
Energy Efficiency
CZ45E features Energy Save technology for 30% less energy use.
Adjustable Thermostat
CZ45E allows for customizable heating settings.
Overall score
Specifications
| Spec | ASNUG Space Heater | Comfort Zone CZ45E 750/1,500-Watt Fan-Forced |
|---|---|---|
| Heating Type | PTC Ceramic | Fan-Forced |
| Safety Features | Tip-Over, Overheat | Tip-Over, Overheat |
| Noise Level | Quiet | Whisper-Quiet |
| Portability | Compact | Ultra-Portable |
| Energy Saving | No | Yes |
Dimension comparison
Price Comparison
The ASNUG Space Heater is priced at $19.99, making it about 17% cheaper than the Comfort Zone CZ45E, which retails for $26.19. If budget is a primary concern, the ASNUG offers a more economical choice for those looking to warm up their indoor spaces. While the price difference might seem modest, it can add up over time, especially if you're purchasing multiple heaters for different rooms or areas.
Heating Efficiency
The ASNUG Space Heater is designed with PTC ceramic heating elements that allow it to warm up in just 2 seconds, providing efficient heating for small spaces. In contrast, the Comfort Zone CZ45E offers customizable heating options with three distinct temperature settings (600W/1500W) plus a fan-only mode, allowing for tailored heating solutions. The CZ45E delivers a powerful output of 5,120 BTUs, emphasizing its capability to cater to varying heating needs across different seasons.
Size and Portability
When it comes to size, the ASNUG Space Heater measures 6.1 inches x 5.75 inches x 2.87 inches, making it a compact option that is easy to transport. The Comfort Zone CZ45E, while slightly larger at 7.5 inches x 5.1 inches x 8.7 inches, is still designed for portability with a molded carry handle. Both heaters are classified as compact and portable, but the ASNUG might be more convenient for users with limited space.
Safety Features
Safety is paramount in space heaters, and both models come equipped with essential protective features. The ASNUG Space Heater includes automatic overheat protection and a tip-over switch that shuts off the unit if it falls. Similarly, the Comfort Zone CZ45E boasts advanced safety features, including a safety tip-over switch and an overheat protection system. The added safety features in both models ensure peace of mind, making them suitable for homes with children or pets.
Noise Levels
In terms of operation noise, the ASNUG Space Heater prides itself on its quiet functionality, making it ideal for bedrooms and offices where a peaceful environment is essential. The Comfort Zone CZ45E also promotes whisper-quiet operation, which is beneficial for use in libraries or nurseries. Both heaters emphasize low-noise performance, ensuring that users can enjoy warmth without disruptive sounds.
Energy Efficiency
The Comfort Zone CZ45E highlights its Energy Save technology, which claims to reduce energy costs by up to 30% compared to traditional models. While the ASNUG Space Heater does not specify energy savings, its efficient PTC ceramic heating design contributes to quick heating, which may help reduce overall energy consumption. For users who prioritize long-term energy savings, the CZ45E may present a more sustainable option.
User-Friendliness
The ASNUG Space Heater features a straightforward one-touch operation, allowing users to easily start or stop the heater with a single press. It also has a clear LED indicator light to show when it is operational. The Comfort Zone CZ45E, on the other hand, includes an adjustable thermostat control, giving users more control over their heating preferences. While both models are user-friendly, the CZ45E may appeal to those who prefer customizable heating settings.
Which should you buy?
Deciding between the ASNUG Space Heater and the Comfort Zone CZ45E ultimately depends on your specific needs. If you prioritize cost-effectiveness and compact size, the ASNUG at $19.99 is a compelling choice. However, if you seek versatile heating options with energy-saving features, the Comfort Zone CZ45E at $26.19 provides superior functionality. Both heaters excel in safety and quiet operation, making them reliable options for warming up your indoor spaces.

