Heating elements and filters are different depending on your model. You will want to identify the model of your SUNHEAT and Thermal Wave heater. The model number is located on the label at the back of your unit. 

Please note if your model has a black or silver back. This applies to SUNHEAT models: SH1500 & SH1500RC. Your heater will be identified as BB for black back or SB for silver back

If you have any questions, please contact customer service at 1-800-652-1916.

Thank you!