Your request for a space heater that could be used for
special situations is outlined below. Space
heaters should be used as a last resort, and only after Heating Ventilating and
Air Conditioning (HVAC) personnel have tried to correct heating requirements by
the central heating system. Facility heating system modifications should be
made where possible to avoid the use of space heaters.
The following steps should be taken before installing a
- Contact facility HVAC Department to correct
heating requirements by the central HVAC system.
- Install weather stripping or control other
sources of cold and drafts.
- An HVAC supervisor or other qualified person
must determine whether space heat is required to maintain a suitable working
- A certified electrician must verify that the
electrical service and circuit to be used at the work site is suitable to safely
supply the current required for a space heating unit.
- The space heating unit must contain fully
enclosed heating surfaces, must have a thermostat and a tip-over safety shutoff
and be listed by an approved listing agency such as Underwriter Laboratories or
Factory Mutual. (A Ceramic Forced Air
Heater with thermostat and tip over safety switch is one type that contains
enclosed heating elements and cool housing side surfaces). The Personal Warmer
is an acceptable UL Listed Appliance that uses less than 100 watts.
- The heating unit must plug directly in to a 120
volt AC receptacle.
- No extension cord or temporary wiring may be
- It is suggested the department purchase and
install the listed heating unit to maintain quality control and appropriate
placement of the appliance.
- A plan should be established to turn heating
appliances off when unattended and to maintain an area surrounding the
appliance of not less than three feet that is clear of combustibles.
- Heating appliances should be inspected annually
and need to be reevaluated.
- Portable liquid, gas or solid-fuel heaters are