If you are looking to buy a heater, then there are a lot of options out there. To hep you make a more informed decision, here are some things that you should keep in mind while shopping:
Type of Heater
One of the biggest decisions that you will need to make is whether you want a heater for your entire house or a single room.
If you need to heat an entire building, then a central heater is your best bet. Central heaters tend to be more efficient than other options, but they also rely on the ventilation system to work properly. Troubleshooting a central heater can also be a bit tougher, since the actual unit tends to be a bit larger and more complicated than most space heaters.
If you want to heat a single room, then a space heater is a good investment. Radiant space heaters are good at keeping you warm while you stay in a room, but they aren't quite so effective at actually warming a room up. If you turn a radiant heater off, then the room will rapidly begin to feel cold again.
Convection Space Heater
On the other hand, you can get a convection space heater, which is good for heating up a room fairly quickly. Still, they aren't quite as quick at making you actually feel warm. Convection heaters warm up the air in the room, which is much more effective at increasing the long term temperature of the room than radiation.
Finally, you might want to get a heat pump if you live in an area that has moderate temperatures. Heat pumps work by exchanging heat between the inside and the outside of the home, which is easy when the two temperatures are similar and difficult when they are not. This means that a heat pump will be cheap and effective at heating up the building on a day that is relatively warm, but much worse at heating the house when it is quite cold outside. Heat pumps can be used as both a heater and an air conditioner, which can drastically reduce the amount that you spend on these appliances.
You'll also want to make sure to keep an eye out for heaters that are energy efficient. In the United States, the Energy Star program gives certain appliances a seal of approval if they meet minimum energy efficiency standards. Buying an appliance that has the Energy Star stamp of approval is a great way to save money in the long run and to reduce environmental impact. For more information, talk to a place like Economy Air Systems Inc.