Furnace issue causes carbon monoxide concern Heard on: Marshfield Police and Fire 00:29 00:00 Fourth Street Command to dispatch. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Fourth Street Command to dispatch. 00:05 Go ahead. 00:09 We did find an issue with the furnace. 00:11 We have shut it down. 00:12 We did ventilate the structure to zero parts per million CO. 00:16 They were advised to not use the furnace. 00:17 Contact a technician. 00:19 We're all semi-complete. 00:21 We're out back to quarters. Terminating command. 00:24 And for a resolution found, command to. 00:27 Related, returning at 13 fifty-seven. 2026-11-07 19:57 UTC Fire 4th St, Marshfield, WI 54449 View on map