Wiring a Wall Furnace

Wire a Wall Furnace

In order to have a wired wall furnace, which is much different from a traditional furnace, you need two basic connections to form it. It will also need a thermostat to wire the furnace, and both the thermostat and the wall furnace will only take up little space but it would also be able to heat up a small room or your corridor.

About Wall Furnaces

Furnaces are used for heating. In countries where the weather is very cold, it is not unusual to find furnaces in the homes of its people. These appliances help people deal with the cold by providing heat throughout their homes. To have a furnace into your home there are few things that you need to keep in mind before getting into the installation process. First of all, get to know the heating requirements. Next, make sure that you are fully aware of the dimension of your home. In case, you are confused or don\’t know much on this then it\’s best that you should consult an expert in this to avoid any errors in the process. Wall Furnaces are one of the ways to have an indoor furnace. It is efficient to be used in many ways. They are easy to maintain as opposed to the other furnaces. While getting through this installation, remember that if ever there\’s any electrical task that you need to accomplish in order to get your wall furnace, the task should be handed over to an electrician in case you are not familiar when it comes to working on electric outlets. This is better to avoid any danger to you or to your home.

What you need:

  1. Wire strippers
  2. Twp 15-amp cables
  3. Wire nuts
  4. Screwdriver
  5. Flashlight


  1. Firstly, you must ensure that the main power switch is turned off when you are doing this project.
  2. Then, pull the 15-amp cable through the opening of your furnace that needs to be mounted and the next step is to open up the end of the cable to expose the three wires within. Label them accordingly for example; the green wire for grounding the furnace, the white wire is for neutral connection, and the black wire the positive energy charge.
  3. Next step is to strip off at least ½-inch of the protective plastic that encases each wire without damaging the metal wire inside.
  4. After that, you need to pair the black wire onto the positive wire that leads out from the back of your furnace. Then, place a wire nut over the tips, push down on the nut and start to turn it in order to secure both of the wires as one. Repeat this step with the white and also the green wires.
  5. Always refer to your wall furnace wiring diagram if you are not sure which wires belong on which screws.
  6. Once done, you can mount back the wall furnace back to its original position with its screws and brackets before you start to turn on the power supply to perform a test on its operation.

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Additional Reading:

Audel HVAC Fundamentals, Heating Systems, Furnaces and Boilers,

How to Fix Everything For Dummies