...you need to invest a little time in thinking about 1) what it is you want it to do and, 2) coming to grips with what it is actually capable of.
A lot of people buy this heater (24%) after looking at the EdenPure portable electric space heater. I am guessing that those who do are looking to save about fifty bucks over the cost of the EdenPure and believe (correctly) that it is a virtual replica of the EdenPure. And that would be just wonderful if the EdenPure portable electric space heater (and this one) lived up to the hype that surrounds it. The problem is neither one does...they are both being promoted with false premises.
In fact, some claims are pure lies. Take this one: "Testing shows, the Dr. HeaterTM has 60% more heat output compared to most other heaters on the market." Ask yourself, what testing and compared to what heaters? You should be highly suspicious anytime a claim such as this is made without reference to the actual testing. Who did the testing? When was the testing done? What heaters were tested in comparison to this one? Odds are that there was never any testing done because the claim they are making is ridiculous. Here's why: Electric heat is electric heat no matter how you slice it or dice it. The only way that a 1500 watt electric heater can have 60% more heat output than "most other heaters on the market" is if "most other heaters" are rated at 938 watts. Period. End of story. It doesn't matter how the electric heat is produced or delivered, if the wattage rating is the same then the heat output is the same.
The makers of this heater also throw around mysterious science sounding stuff like "PTC." So just what is PTC? It stands for positive temperature coefficient and that sounds pretty high tech, too, doesn't it? So what is it? It is a ceramic heating element that is designed to heat to a specific temperature and varies the wattage consumed in order to maintain that temperature. In other words, it's self regulating. That's actually a nice feature and a big improvement over the stupid light bulb in copper pipe design that is employed by the EdenPure. (EDIT: Oops, just noticed that Dr. Heater uses quartz light bulbs with a PTC element so they are nearly as dumb as EdenPure) But does it justify spending two hundred bucks (or more) on the Dr. Heater? Well that depends on what your heating goals are. Let's explore that a little more...
First of all the only way that this heater (or the EdenPure) is going to save you any money at all on your utility bill is if you change your lifestyle. If you, like most of us, live in a house with multiple rooms then you need to realize that this heater is designed to heat ONE room. And, depending on the climate in your location, that might turn out to be a pretty small room. And while this is going on the rest of the house is going to be colder, maybe a lot colder. If you can make it through the winter living in one room in your house then this might be the heater for you. Most of us, however, move about the house from room to room and we enjoy doing so in relative comfort. A portable electric space heater (regardless of brand name) is not going to heat your entire house. And if you did put an electric space heater in enough rooms to make the house comfortable you would absolutely freak out when the electric bill comes due.
Here is a little math to explain that:
Let's say that you have a 10 cent per kilowatt utility rate. Let's also say that the heater is on 50% of the time. There are 720 hours in a thirty day month so that would be 360 hours for 50% operation. 1500 watts x 360 hours is 540 kilowatt hours. Multiply that against a ten cent rate and you get 54 bucks. Think about that for a second or two: 54 bucks to heat ONE room in your house for a month. And remember, that is assuming that it's only on for half the time. What if it's on for 2/3's of the time? Or 3/4's of the time? Yikes! Not good, campers, not good at all. And holy cow, what if you live in New England where it's cold AND the electric rate is over 15 cents a KWH? Double yikes! This is why (with the exception of heat pumps) electricity based heating is your worst heating value. Always has been and always will be.
And if you do live in a place that gets really cold then this "heat one room" strategy could blow up in your face if it results in a frozen and broken water pipe in an area that you aren't heating properly. This could happen quite easily if the electric heater is in or near the same room that the whole house furnace thermostat is in.
So what's the bottom line? First of all remember that electricity is (usually but not always...see below) a terrible value in terms of heating. Then also remember that the only thing that counts with electric heaters is the wattage. The biggest electric heater that you can plug into a standard wall receptacle will be rated at 1500 watts and they all produce the same heat regardless of bogus claims made to the contrary. That is basic science. Third, ask yourself if you really want to live this way: A prisoner to the warmth in ONE room of your house. If these things are okay with you (and if you insist on spending two hundred bucks or more for the same heat that can be had for fifty bucks or less) then go for it. Just don't expect this portable electric space heater to keep your whole house comfortable (it won't) while simultaneously saving you bucket loads of money. It just isn't going to happen.
A better idea would be to invest some money in beefing up the insulation values in your home. Especially look at your floor. You would be surprised how many people live in a home (built over a ventilated crawl space) with an un-insulated floor. Take a look at sealing up cracks and crevices in exterior walls and around doors and windows where warm air leaks out and cold air can infiltrate. These fixes aren't particularly hard and after they are done they last forever. They aren't as sexy as magic electric heaters but they do work.
EDIT/UPDATE: See my comment (dated 3-7-2013 on page 15 of the comments for this review) where I discuss yet another alternative to the overpriced "magical" electric space heater, the PTHP. If you want to spend big bucks on an electrically powered heater then this is THE way to go. It's more than 100% efficient. Seriously, it really is. Best value out there for this sort of thing.