I purchased this brand of heater to replace another heater ...
343261
I purchased this brand of heater to replace another heater of the same brand that I had for years. I purchased the previous heater locally and when it went out, I purchased this one from Amazon. It's awful. DO NOT PURCHASE. After having the heater professionally installed, it had problems from the beginning. The heater continuously goes out. The pilot light malfunctions. I recently read another review for the same heater and another buyer had the same problem.
2939656
This is the only brand space heater/room heater I will ever buy. These work amazingly well and fast. They are not hot to the touch and I don't have to worry about my toddlers with this heater. I had an older previous heater of the same brand with issues and the manufacturer warranty service was A+. They sent a brand new replacement right away.
2949581
Two years ago we purchased one of these to replace antother one that had lasted 30 years. The replacement only lasted two. This is the same brand (just about the only brand I found). I'm just hoping this one lasts longer than 2 years. It did heat up the bed when installed.
1004026
Not a one of these heater cores say what they will fit in the description
1805491
Poor heater does not warm the room much - disappointed with this purchase.
1875371
UPDATE:  I have  been using Cobalt Aquatics Neo Therm heaters for the past few years and for the most part they
are very accurate.  They are well made, however, the silkscreen that is used for the LED digital readout could be better.

Interestingly enough, when I used some Mr. Clean Magic Erasers to clean the LED readouts on my 75 watt Neo Therm heaters
they cleaned up nicely.  However, the Magic Erasers ended up removing most of the silkscreen numbers on the Neo Therm
100 watt heaters, which indicates that Cobalt Aquatics may have used a cheaper material on the 100 watters.
UPDATE:  I now have eight functioning Cobalt Aquatics Neo Therm heaters.

Six of which are operating in planted aquaria at the present time.

A ninth Cobalt Aquatics Neo Therm 50 watt heater stop functioning at about year, and the company was no help at all in getting this unit repaired.  The heating element simply stopped working, yet,  the digital display on the heater remains fine.

I am presently using  four 75 watt Neo Therm heaters and a pair of this company's 100 watt heaters. Thus far they are working well, however, I do notice quality control issues.

Specifically, some of the units are perfectly assembled, while a few have more shoddy construction.

In other words, the buttons to adjust the heating temperature are very difficult to press, and don't always work.  This means that you have to press them more than once, which may also mean that they  may  eventually  fail to work altogether.

Earlier...

This is my second Cobalt Aquatics' heater. I purchased a 50 watt version  over the past six months.  This one's a 75 watter.  I have also noticed that Cobalt has recently expanded this line of heaters to include  150 and 200 watt versions.

Thus far my experiences with the  50 watt version have been positive. It's in a Mr. Aqua 12 gallon long which is at about the maximum size for this heater. As a result, the heater can be working harder than it should during the winter months.

This is especially true since I like the cooler temperatures during the fall and winter months, and as such,  keep my den windows partially open most of the time.

However, even during the coldest months of the year, water always remains above 70 degrees.

The Cobalt is  aesthetically pleasing, well constructed, and very easy to use.  It's a bit on the expensive side though.

However, the prices have come down about 15% or so since these heaters were first introduced.

If they turn out be durable heaters that stand the test of time, the Cobalt Neo Therm series will be well worth the investment. Especially when one considers how difficult it is to find a company without the quality control issues that most aquarium heater manufacturers experience.

Of all of the equipment one must purchase in this great hobby, heaters are the most problematic. For instance, you can purchase two identical heaters and one may prove to be reliable for years, while the other fails right out of the box.

Thus far, I recommend the Cobalt Neo Therm line. However, try to find them at a discount. Amazon.com usually has them discounted. Although I'm not sure if you can find the Neo Therm 150 and 200 on Amazon yet.
3180274
2 nd winter after installed 2 nd time having issues with unit heating .
Unit starts cycle but shuts down prior to igniting unit . When to mrheater website for troubleshooting ( 3 blinking led error) no help called 800 number still awaiting call back.
I spoke to local heating air said would not come out due to previous issues getting parts to repair mr heater . Im feeling like i should have purchased modine or other brands . Ps purchased lowes and selfstalled unit to builder flue and thermistat
895909
I ordered this microwave to replace a GE Spacemaker II model # JEM31GV001. I had hoped it could be hung on same brackets as the Spacemaker II but it could not so we had to use a new installation kit. In addition this model's door is not hinged the same as the JEM31GV001 so that required additional work on the cabinetry. After doing all of this we plugged it in and it did not heat! In searching the internet it appears this is not an uncommon problem. Under the warranty GE is sending a repairmen to take a look at it.

In summary I cannot fault GE for the problem I had installing the new microwave but to go through all of that and have it not heat is very unsatisfactory.
2094066
I keep my house fairly cold in the winter (66 degrees), but like my bedroom/bathroom to be quite warm when I get out of the shower.  Therefore, I keep a space heater in my bedroom and I turn it on high when I get in the shower so it is toasty warm when I get out.  After having my previous space heater for two years, it died, so I replaced it with this ceramic surround heater.  I've had this heater since March, and it has gotten approximately two or two-and-a-half total months of use.  And it is now malfunctioning to the point that it cannot be used.

When I turn the heater on, it tries to kick-start itself for about five minutes and then gives up.  Unplugging the heater or moving it to a new plug doesn't help; it still struggles to turn on for a few minutes before it gives up.

During the two or so months that the heater was functional, I still had a lot of problems with it.

~~ I would set it to 75*, but it would turn off completely when my bedroom was still only approximately 68-70*.
~~ The timer also never worked correctly.  Setting the heater for one hour would result in either about 15 minutes of heating or about two hours of heating.
~~ The "anti-tip" technology that is supposed to turn off the heater if it gets tipped over was TOO functional.  Even the smallest variation in angle due to sitting on a rug could cause the heater to turn off.

I've now had to replace this heater AGAIN after very little use.  I cannot trust this heater to heat or to turn off when I want it off.  Therefore, it is going in the trash.
613163
I can write a comment because I using this CZ35 for about a year. I noticed could not locate another of this model at store and got the next model CZ40. I wanted 2nd heater because I don't trust cheaper ones and thought it may go out and I like the heater very much.  Well, it did, due to mechanical problem, the dial became stuck in the OFF position and could not switch it on.  I did nothing unusual for this to happen and no longer under warranty. The CZ40 (next model) for some reason provided a little less heat than CZ35 and have to keep it on HIGH.  The  later model CZ40 vent is differently shaped and sends the fanned heat in three different directions.  The CZ35 has good vent that fans out warm air well and works acceptable in LOW or HIGH settings depending what is needed. I was very glad to locate this difficult to find model CZ35 on Amazon listings and purchased one today.
1098281
This product stopped putting out heat about a month after I started using it. I have used this brand of heater before without a problem. Guess I got a defective unit.
4443602
This is a great heater but...It will not work on high heat without shutting off after 3 minutes.  Sadly, the company - Optimus Enterprises does not answer their phones.  So, I would not recommend purchasing this heater if you want service from the company that makes it and promises a 3 year warranty.  However, it is a good heater when it worked and so, if you do buy this get the extended warrant from SquareTrade - they are the best and the warranty is cheap
4324705
I purchased another EdenPure heater because I loved my first one...it's so econmical,no smell at all like some electric heaters.....just pure heat. I have one in the kitchen area now. Heats the whole apartment.
2830435
I had to return the heater for a replacement because it did not work at all. Sadly I had to return the second one because it too did not work.
1381961
Well I purchased this heater to replace an older, electric, Honeywell round heater that needed replaced.  I was tent camping, opened the new box and pulled out this heater.  Well to my surprise several small pieces of plastic fell out the front heater section of this unit.  My fault for not checking it out earlier.  My only concern was will it work (I had another heater if not)?  I Gorilla tapped the bottom of this unit away from the heater heat and this unit worked fine. However, for what I had paid for this heater I was displeased!  I don't know if this unit was dropped somewhere along the process of it being packaged or what (MY BOX HAD NO OBVIOUS DAMAGE)?  Are the plastic welds inside too brittle-I don't know.  I have to contact this company now that I am back home from my trip and see if this is a problem or not. I will let everyone know how this company handles my problem ASAP.
261409
I am really confused.  I bought this heater years ago for my office and it worked wonderfully.  It was recently stolen so I had to replace it.  According to my order history I ordered the exact same model but it seems very different than the one I bought two years ago.  The fan looks cheap, is VERY noisy and the unit just does not generate heat the way my original one did.  The original one used to actually heat up my entire office with no sound at all.  I have to keep this new unit next to me in order to have some luke warm air blown in my direction that does little to heat up the room.  This is like those cartoon air conditioners that use a fan to blow air over a giant cube of ice to cool a room.

I really miss my old heater!!!
1641751
This looked like a good solution to a chilly bathroom. When we used it however, it cut off after about 5 minutes without warming bathroom. This unit was probably defective, but I wasn't tempted to try a replacement.
 Bought a Delonghi tower heater ($60 as opposed to $22 for the Impress) and it does the job beautifully. They are both supposedly 1500 watts, but the Delonghi is more than adequate, has a remote, a read out in actual degrees and other features. Couldn't find it at Amazon, but bought it at Lowes.