Space Saving Heaters If you are going to install a heater, you obviously need to obtain the best one for the job. Generally, a heater’s effectiveness tends to be reduced in an open plan home or where a room is open with access to a stairway. Other reasons for a heater not working to its optimum efficiency would be large window recesses and other sources of drafts or insulation that is not adequate in terms of thickness and area it is intended for. However, if all these things are accounted for and the heater is working efficiently, you can expect …