Garage heating becomes an issue when you want to enjoy that space but it's simple too cold to feel comfortable. In the world of garage heater, there are sub $100 models of heaters and some that cost well over $1000 which can make it confusing because all you want is some heat. One option is to just go with portable garage heaters and not worry about the more expensive kind.
No installation
A portable garage heater does not have to be installed. Many of the larger units will have to be held up while you attach it to the wall or ceiling. If they happen to run off of natural gas or propane, there will have to be some ventilation as well. A portable heater is generally electric and can just be plugged in while it sits on the ground.
Infrared or Radiant Heat
Most portable garage and shop heaters are going to be infrared or radiant heat. Some will be convectional and warm the air in the garage, but most will be pointed to a certain area to warm those surfaces. They are like this for two reasons. First, a portable heater gives quick, instant heat. Second, a portable heater is generally too small to effectively raise the air temperature in a large room like a garage.
When to avoid portable garage heaters.
If you are wanting to spend hours in your garage or shop, a portable unit might not make the most sense. They will be good for shorter time spent in the garage, but a larger garage heater will warm the room significantly to give you a comfortable temperature to be able to spend many hours in.
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