Furnace Red Tag Venting Repair in Newmarket

Furnace Project, Newmarket

Correcting a Furnace Red Tag in Newmarket

A furnace in a Newmarket home had been red tagged, which means it was flagged as unsafe to run until the problem was corrected. We came in to do the required repairs. The work centred on the venting: the exhaust venting was replaced and repaired, a new dedicated fresh-air intake went in, and the sheet metal around the furnace was adjusted so everything fit together properly.

• Problem: Furnace red tag
• Location: Newmarket, Ontario
• Scope: Exhaust venting, fresh-air intake, sheet metal and ductwork
• Completed: October 2026

Step 1

New Exhaust Venting

The furnace exhaust venting was the main part of the job. We replaced and repaired the exhaust run so the furnace vents the way it should, with the new PVC piping routed up from the furnace and across the basement ceiling to the outside wall.

Step 2

A Dedicated Fresh-Air Intake

We also installed a new fresh-air intake that serves the furnace alone. It runs beside the exhaust and exits through the same outside wall, so the furnace draws its combustion air from outdoors.

Step 3

Sheet Metal, Ductwork and Final Checks

With the venting in place, we adjusted the sheet metal and ductwork around the furnace to bring the whole installation into proper working condition. Once the repairs were done, we checked the furnace and the venting system to confirm safe, proper operation.

Project summary: a furnace red tag correction in Newmarket, Ontario, completed in October 2026. The work covered the exhaust venting, a new dedicated fresh-air intake, sheet metal and ductwork adjustments, and a final check of the furnace and venting.