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Envi High-Efficiency Whole Room 120v Plug-In Electric Panel Wall Heater - 2nd Generation (HH3012T)

15.00 LBS
In Stock

Product Description


The HH3012T is a direct replacement to the HH1012T model. The Envi™ Wall-mounted Electric Panel Heater is one of the most efficient, stylish, and innovative space heaters ever developed. After 7 years we have finally refreshed the Envi Heater with a more stylish look. The HH3012T Envi Heater is a 120volt plug-in whole room heater and has a built in thermostat.


  • True Temperature-Controlling Thermostat. (Only models HH3012THW3012T and HW3022T)
  • Wall-Sens(TM) Technology, safely cuts power to heater if it is removed from the wall. (All models)
  • 475/500 watts - low wattage convection heating that doesn't dry out the air, won't trip the breaker but is still powerful enough to heat a 130sf to 150sf rooms.
  • Convenient Cordset storage inside heater to tuck away untidy power cord. (only Plug-in models)
  • Hardwired models also available, approved for commercial installation.  (HW3012T/HW3022T - with built in thermostat and HW3012N/HW3022N - without thermostat)
  • Conforms to UL & CSA (Canadian) safety standards (All models).
  • Available in Canada also. If you live in are in Canada, please click on www.eheat.com/canada to receive FREE SHIPPING to any location in Canada!

The Technology

The dual-stack convection technology featured in the Envi was born out of years of research and development to find a solution to effectively and safely heat a room using the smallest possible, amount of electrical heating energy.

Dozens of heating methods were evaluated to fine tune the Envi heater, but eventually the answer was found in a naturally occurring phenomena called the "stack effect". This provided the basis for and eventually we won a patent for the final Envi heater design.  Natural convection, fanless heating is enhanced by simulating multiple pathways, or “stacks,” inside the Envi heater.  This technology boosts the flow of cool air from the floor of a room, into the unit, and maximizes heat transfer out the top of the heater.  The resulting process creates a slow moving transfer of warm air around the room, effectively warming the occupants.

The result is a 100% pure convection, fanless heater that uses minimal energy but also effectively warms each room in a house or office - or any room or space for that matter!

What are the Benefits?

  • Economical - low wattage technology (only 475/500 watts). Costs as little as 4-5 cents an hour to run.
  • Efficient - 100% Pure Convection Heating
  • Innovative - New Patented Stack Convection Technology
  • Safe for children, seniors, and pets - Cool-to-the-touch (90°F), Wall-Sens(TM) technology and automatic thermal cutoff
  • Simple to install  - Installs in minutes, no drilling required
  • Slim - Just 2 inches thin
  • Stylish – Beautiful flowing curves compliment any room interior
  • Healthy - Fanless, non-forced air design that doesn't blow dust or allergens into the air and around the room.
  • Sleep friendly - Silent and auto dimming on/off power light in dark rooms, is helpful for light sleepers.
  • American Owned & Built – High Build Quality – ISO 9001 Quality Control Factory Certification
  • Heats Room Size – 130 to 150 square feet
  • Built in Thermostat - Better temperature control
  • Sturdy & Crack Resistant – high tech 21st Century durable materials will not crack or separate at the seams.
  • Industry Leading Warranty – 3 years
  • Easy to clean – smooth wipe clean surface
  • Cord Storage - Cordset can be stored inside the heater for a more attractive look.
  • Hardwired Approved - Hardwired models are certified and approved for permanent electrical installation under UL Safety Listing 2021. The Envi heater finally answers the need for a legal and safe, hardwired electric panel heater. (Models HW3012T, HW3012N, HW3022T and HW3012N)

Please review our Return Policy before placing an order.


Model Number: HH3012T
Voltage Rating: 120V, 4.17 Amps
Power Consumption: 475/500 Watts
Unit Size: 19.3 in. (W) x 2 in. (D) x 22.2 in. (H)
Unit Weight: 10 lbs (shipped weight 15lbs)
Color: Luxury White







Standard free shipping on all orders is NO SIGNATURE REQUIRED for delivery.


*Due to popular demand, stock levels may vary and will ship within 1-3 business days.

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Product Reviews

Showing reviews 1-20 of 346 | Next

  1. (Nearly) Exactly what we needed!

    Posted by Christine Caffrey Johnson on 3rd Jun 2020

    We finished our lower level last year but the heat in the bathroom was not quite enough to feel cozy when using the facilities. I found this product online and ordered it, installed it myself (following the excellent instructions), and have enjoyed the benefits since. It’s very handsome and unobtrusive.

    A few things: this is a much larger heater than you might think from the photos online that do not show you perspective. Secondly, at the very lowest setting it heats up our bathroom just fine - and I love that it can so easily be turned off. But this is a large unit that could probably heat up our three car garage in the winter - just saying. Finally, while it’s working out ok, I think it would be best to not have anything (as we have chair rail) above the unit so that heat can flow freely and not get anything except the air warm.

  2. Very efficient

    Posted by Elliott R on 27th May 2020

    Bought one of these for the bathroom at home and it worked so well I bought 2 for a small seasonal cabin we have at the lake.
    Found it very efficient and it performs better than expected.

  3. Best Value

    Posted by Annette Sullivan on 22nd May 2020

    This heater is a game changer. The low profile is amazing. The thermostat is easy to access and works well. Installation is simple and safe. The convection system keeps the warm air moving where it needs to be. The cord is long enough to provide correct placement when outlets are few. How satisfied am I? I bought four more!

  4. Just as great as the first one.

    Posted by Tommy Thompson on 21st May 2020

    This is our second unit and we would happily buy a third if the need arises. The easy installation can not be over stated. We put the first one in a half bath that had no heat vent. It fit the need perfectly. This one is going in our grandsons bedroom. The heater does not get too hot to touch. So again, it fits the need just right.

  5. 2 More

    Posted by bob f on 21st May 2020

    I like my two Envi heaters so much, that I bought two more. Love 'em!

  6. Save money on bills & support American manufacturing

    Posted by S. Ahrens on 20th May 2020

    This product is a win-win. I just bought my second unit after being very satisfied with a full winter using one. Every home should use these - particularly in moderate climates and well insulated structures. I live in a poorly insulated tenement where the "heaters" that came with the place are worthless at heating yet incredibly expensive to run. It was more economical to buy an Envi heater in this rental - in one season I made back the cost in savings. Envi heaters are perfect for any rental, ADU, AirB&B, tiny house etc. If you have a residential income property, consider using envi heaters. From an economic, SAFETY and space saving perspective, it's simply ideal. There's no reason to spend more on heating or to have risky, fire-hazard, heating units when Envi heaters demonstrate you don't have to! I know children who turn on their own Envi heaters because it's safe for them to do so.
    Here are my only hesitations regarding this product:
    -I don't know how long a unit can be expected to last, so I can't speak to the long-term investment aspect.
    -In extremely cold temperatures it doesn't heat quite as high as one might like: I supplemented with an area heater when temps were incredibly low (poorly insulated tenement) but in this moderate climate, it only approaches 0°F a few times per winter. I'm hoping with 2 Envi heaters I won't need the occasional area heater.
    -There is a hot-plastic smell when you first turn it on, which goes away after 72hrs or less.
    Overall a fantastic product!

  7. Very happy - second purchase

    Posted by Walt on 20th May 2020

    This is the second heater I bought. The first one was 220v hard wired. They both perform beyond my expectations relative to efficiency & aesthetics.

  8. Still The Best

    Posted by Jeff on 20th May 2020

    I've amassed about 5 heaters now, all for varying sized rooms, and these heaters work extremely well, emit no noise, and save on the bills. My home office just got configured to a new, smaller room and this new heater does the trick. The only sticking point is after a few years the heat can leave almost soot-like streaks on the wall above where the convicted air rises, but these wash off with vinegar/water spray, a rag, and some elbow grease. Still very much worth it.


    Posted by Ken G Amherst, Oh. on 17th May 2020

    Just installed the fourth unit in the lower level for consistent zone comfort.I have shut off whole house to this 900 sf area. My wife likes icicles 24/7. I like beaches. NEVER had any reliability issues over all the years of use. ENVI has given consideration toward the easiest installation for even the most inept. These heaters will not significantly spike your wattmeter. Even if left on 365 as mine are.

  10. Safe and efficient

    Posted by Chris on 16th May 2020

    This is the second one that I have purchased. They both work very well.

  11. We have three.

    Posted by BettyJo on 16th May 2020

    We have two in bsmt mancave/office and one in living room. Work great! Highly recommend but plan where you will place on wall prior to purchase. Must have wall space width and outlet access in reach.

  12. Third time

    Posted by Craig P. on 14th May 2020

    I have now bought my third unit and enjoy the benefit of all three without any concerns. I recommend these units for economic reasons and ease of use.

  13. Terrific Whole-Room Heater Makes Spouse Comfortable and Happy

    Posted by Chip Swanson on 13th May 2020

    This heater is Wonderful!
    My spouse has an in-home office, and works most of the time here. Our home is an older on, and while it was insulated with blown-in cellulose in the 90’s, a single thermostat controlling a steam radiator boiler means that the bedrooms and office upstairs are usually much cooler than downstairs.
    After getting rid of the cube heater and installing the Envi, she says to me, “OMG, it’s so much more comfortable now; it’s perfect! And completely silent!”
    And our electric bills are lower; bonus twice! Thanks!

  14. Space saving and efficent

    Posted by Tim O on 13th May 2020

    It is an attractive unit, that is very space efficient. It took a little bit to get it broke in per the instruction but once it was it worked great. I have not had it but 3 weeks but I have no complaints. Great product!

  15. Best construction decision

    Posted by Sam D on 10th May 2020

    Having a warm bathroom was tops on our list for our new addition. I saw this product advertised in Family Handyman magazine. After reviewing the product and the reviews I took a chance. It is wonderful to walk into the bathroom which is kept between 76-78. And without a noisy fan, one hardly knows it is there.

  16. Best heat for old homes and safest for kids

    Posted by Jocelyn Crawford on 9th May 2020

    We absolute love our heater!!! Totally worth it. Easy to install. Safe for kids, doesn’t get hot. Absolutely no noise, I mean literally NONE.

  17. The easiest way to get heat into your rooms!

    Posted by Michael S. on 5th May 2020

    My condo came with ugly looking floorboard heaters. With minor lay out skills needed (packaging comes with a mounting pattern) I had the heater up and running in 30 minutes. The second one took 20 minutes. I installed these heaters in two bedrooms and one large living room. This is the best money I have spent this year.

  18. Excellent Product

    Posted by Denise on 22nd Apr 2020

    Easy to install. So far we have purchased two of these and they have barely increased our electric bill. AND they are on all the time. They are efficient and deliver results. We are planning to purchase more in the future. Good quality and we are VERY PLEASED with our purchases. This is hands down one of the very best purchases I have made in my life.


    Posted by Lisa on 2nd Apr 2020

    I have purchased 3 of these for different rooms of my home over the past 6 years, and the new model definitely addressed the 1 issue I had with the original model. Either way, this gives off a perfect constant heat without noise, it's cool to the touch, which is important with grandchildren and pets in the home, mounts incredibly easy to the wall, you hardly notice it's there (except that your room is now nice and cozy). My home is in the middle of a Redwood forest, there is no whole house heater, just a wood burning stove in the living room, and although it doesn't snow, we have nights where it dips down into the 30's. Before I bought these, we had regular space heaters that were labeled as "economical", maybe in someone else's location, but not here, and my electric bill was through the roof. My bill has plummeted with 3 of these in each bedroom, and we never turn them off in the winter, as to where the space heaters were only turned on when we were in the room itself. These things are worth every penny you save on your electric bill, and then some!

  20. Electric Bill Saver!!

    Posted by CHRISTOPHER EMMONS on 2nd Apr 2020

    I have electric base board heaters with propane backup at my deer camp. The electric baseboard heaters were causing my electric bill to skyrocket in my 1000 sq ft camp; even more than my 2100 sq ft residence. I installed 4 envi heaters two down stairs and two upstairs (2 per 500 sq ft). My electric bill has been cut at least 50% and the heaters are super efficient and make it very comfortable. I paired them with the plug in thermostat and programmed them. So impressed!! What makes it even more impressive is my camp is in Northern Michigan where it stays cold! Thank you Eheat!

Showing reviews 1-20 of 346 | Next

Product Videos

Envi Heater: The Best DIY Heater with Jason Cameron (02:54)
Jason Cameron explains why the Envi Heater is the easiest heater to set up! Take advantage of our patented energy-efficient, money-saving technology and save up to 50% on your heating bill! Buy one today and we'll send it to you with FREE SHIPPING (in the continental US only). Get the Envi Heater today at: http://www.eheat.com/categories/Wall-Mounted-Electric-Panel-Heaters/ Like us on Facebook: http://www.facebook.com/envipanelheater Follow us on Twitter: http://twitter.com/enviheater
  • Envi Heater: T...
    Jason Cameron explains why the Envi Heater is the easiest heat...

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