size of room it will be able to heat in the cold Wisconsin area NWest?
772917
A room about 10 ft long by 13 to 15 ft wide (130 -150 square feet) with average insulation. The 475 watt envi heater has been specifically designed to heat an average room measuring 130 - 150 square feet in floor area, to between 68 and 72 degrees, even in the coldest parts of the country. In rooms that have one or more of the following conditions: inferior insulation, many windows, staircases leading upwards, adjoining rooms that cannot be closed off (open plan) or outside entrances - this ratio may have to be lowered slightly. For rooms with above average insulation or warmer climates this ratio might be able to be increased. You can add as many heaters as you like to heat any size room, home or office. For rooms with no insulation or for rooms such as sunrooms with entire walls made of glass we recommend a ratio of one 475 watt heater per 60-80 square feet of floor area.
650699
I would have to guess a room 600 to 900 square feet would be fine and you'll probably get a 3 to 5 degree rise in temperature if left on
561803
I use it in a 320 square foot guest house with cold tile floors. Keeps it toasty overnight down to 40 degrees outside.
1227439
Assuming that is 25' x 25' x 10', I believe 1 unit would be challenged if you're in Northern Alberta - checking some weather info for Fort McMurray (a guess), I see 'average' lows of -10 F and minimum lows of -30 F over the last 20 years (and -58 F for the long-term). I set mine at 45 F for a 24' x 30' x10' (12' roof peak) metal building (not that well insulated) in Texas and with +8 F ambients, it was on 45 minutes/off 15. I did buy 2 but only put 1 in service, as that was acceptable to me. Also, there are recommended minimum clearances of 34" top and 68" below for these units; a 10' ceiling and a 12" unit height means you're almost at minimums (34" + 12" + 68" = 114" = 9'-6") to start. With the radiant heat flux off these units, the area directly below (or directly facing if you mount the unit at an angle, as I did) will get hot, so depending on what you're using the space for, there may be issues with localized 'hot spots'. Having a method to keep the air in the building/room well-distributed is also important (I used 2 ceiling fans) for several reason. The unit will consume O2 out of the air - about 1 cubic foot of O2 per minute. There is a recommended fresh air flow in of 160 CFM for this heater (high, IMO as a Chemical Engineer, but I'd want at least 50 CFM), so proper ventilation is also a concern if your room/building is 'tight'. You can better evaluate your specific application, but I believe one 40,000 BTU/Hr unit would be marginal in that size building (unless very well insulated) in the climate I think you're looking at.
82534
Place it in a central location that would be convenient to heat the whole house but away from thermostat. Order the blower attachment and keep the doors on rooms not in use open only a little ways. My stove heats an area that is 1456 sq. ft. and I very rarely run my furnace even in the winter time. The winter in West Pa was terribly cold last year.
491010
We use it in a basement guest room that is 11x24 (265 sq. feet), and with the door closed, our regular guests say it makes the room toasty for them and baby. Otherwise, in winter that room is about 60 degrees.
1919650
We live in the San Francisco Bay area, gret here, don't know about where it snows, but probably OK. How far north? I would think a heater would be fine as long as it doesn't touch the plastic. Be sure oxygen gets in, it does have lots of windows.
291226
We have this heater installed in a 1450 square foot cabin at 8500 feet that gets winter snow. It works great! Its installed in the living room. No problem heating and the frost cycle works great when you leave for a couple of days or more. Buy it .it is terrific and very reliable! We have a second one in the add on room that is over 400 square feet. Together they keep the cabin warm all winter long
100221
I have one in the bedroom and it can heat more than that. The room is probably 12'x12'.
688025
I only know I have a 20 by 20 room in NJ, with 8 ft ceiling height. two standard windows, one insulated door. the room is very insulated with cross-hatched full fiber and foam and floor and ceiling; the rinnai heats it very well, very quickly, very quietly; I used it all last winter and it is an great unit, easy to use. No complaints only praise; I paid a HVAC professional to install, cost about 400.00 for that took him a full day. Hope this helps your project. J
811922
I am heating my bathroom with it (90 sqft). Our place is well insulated and it usually doesn't get below 40 degrees here so that would be the qualifier. Doug Doyle
756294
59* is the lowest and 88* is the highest. If the room you want to heat is bigger than a 10' X 10' the heater will have to run all the time to keep it warm. It is to small for regular rooms. I would look for one that is bigger.
1804472
Yes, with some hesitation. I am in N. MI and I heat a room in an otherwise unheated building that is 12x24 with 10.5' ceilings. I only need to keep the room just above 65 to maintain the temperature of the equipment so it actually works quite well and we've already had nights down to 14 degrees this year. I assist the heater with a ceiling fan and the space is as well insulated as most homes but with a concrete floor. The thermostat feature is quite good at maintaining a consistent temperature. If you live in a place that is colder it might not work as well for you but if you're south then it should work well enough but might struggle to keep it at 75 or be on all the time as this size space really does require more BTUs. Download the manual, there is a chart in it to help you figure out your space to know how many BTUs you really need.
561804
This heater works well in 100 sq ft above 53 degrees. Below 50 degrees low temperature an additional Lasko heater may be necessary depending on what your insulation and window type that you have. I still love mine.
947464
It all depends on how cold the space is before you start heating. At 30 degrees outside, it takes this heater about 30 mins to warm a space 18 x 30 x 8' high, to 65 degrees.
1336672
It is a good heater and works well in our 150 sq ft room that is insulated. If its real cold where you are it may not work so well in an uninsulated area.
1341267
I have not needed to heat anything yet (I live in FL) but a 14 x 14 space should easily be heated by this unit.