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Mainstays

Mainstays Personal Electric Space Heater 400W for Indoor, Portable Electric Heater for Home, PTC Ceramic for Fast Safe Energy Efficiency, Black

4.3 stars out of 2425 reviews
(4.3)|
2,425 ratings
Mainstays Personal Electric Space Heater 400W for Indoor, Portable Electric Heater for Home, PTC Ceramic for Fast Safe Energy Efficiency, BlackMS MINI HEATER BKMS MINI HEATER RDMS MINI HEATER BUMS MINI HEATER WH
Actual Color:Black-Out of stock

Key item features

  • Safety Features: Equipped with tip-over and overheat protection, this personal electric space heater automatically cuts power if it gets too hot or tips over, ensuring safe operation.
  • Quiet Operation: The indoor space heater operates at a low decibel level, fostering a quiet environment suitable for studying or working without distraction.
  • Efficient Heating: Advanced PTC ceramic heating elements efficiently convert cold room air into comfortably warm air, providing fast and effective heating.
  • Stylish Design: Featuring a refreshing appearance, this portable heater can complement home or office decor while simultaneously providing warmth.
  • Compact Power: This Mainstays personal electric space heater delivers 400W of power, offering a blend of fast heating, safety, and portability for indoor use.
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Current price is $11.74
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Customer ratings & reviews

4.3 out of 5 stars
stars2,425 ratings467 reviews
How item rating is calculated
  1. 5 stars69% (1,669)
  2. 4 stars11% (278)
  3. 3 stars7% (163)
  4. 2 stars4% (89)
  5. 1 star9% (226)

Reviews summary

Pros
  • : Occupies minimal space on a desk.
  • : Offers great value at this cost.
  • : Features a straightforward on/off toggle switch and lightweight design.
  • : Ideal for small spaces and desks.
Cons
  • : Heater lacks adjustable temperature and mode options.
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Showing 1-3 of 467 reviews

Sep 28, 2025
Tara
Item details
Color: Black
5 out of 5 stars review

Verified Purchase

Small but powerful

I live in an 18-ft RV and I needed something small but powerful enough to get the job done. I bought two one for my RV and one for my outside space. it's efficient, quiet, and I love the tip over feature. makes it more safe with my animals. definitely would recommend for a small space for someone on the budget

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Oct 19, 2025
Regina
Top Reviewer
Item details
Color: White
5 out of 5 stars review

Verified Purchase

This is so cute and it's so powerful for its size. Totally worth the prize and it{s easy to carry around. I use it for my shower and its able to warm it in around 15 minutes, which I appreciate.

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Nov 3, 2025
Darren
Item details
Color: Red
5 out of 5 stars review

Verified Purchase

I really like these 400 watt heaters,,, I live in a 30 ft RV with one slide out,,, I purchased three heaters put one in the bathroom one in the living room and one in the bedroom,,, heats up incredibly well,,, I can put a 1500 watt space heater in the middle of my RV and it does not heat up near as good as the three 400 watt heaters because it evenly displaces the heat through the house better and I save 300 w by doing that cuz only three of them run 1200 watts,,, heats up better than a single 1500 watt heater and saves money 💰

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