Then you don't have heat strips. We have them but never use them. Because you need to have the unit's fan running it's just too much noise for us. We been in the high teens overnight and the fireplace and two of those little ceramic cube heaters work just fine. And it's quite!
P.S. We run an extension cord out the bedroom window to power the cube heater in the bathroom!
2011 Georgetown 378TS in FireMist
2013 Jeep Wrangler Toad
Kirby the Old Dog, passed but still in our hearts
Max E. Dog, the new pup
Eureka the Old Cat, still hangin' on