A useful observation is different from a vent repair
The important information is where the opening sits compared with the snow that actually gathers there. Include nearby walls, drifts, walkways, and where shoveled snow gets piled. Tell the service company whether the furnace stopped during heavy snowfall, after wind moved snow, or after a plow or shovel covered the area.
Follow the installed equipment's owner instructions for any permitted exterior care. If you cannot identify the intake and exhaust confidently, ask the installer to identify them. Do not disconnect either pipe or change an elbow to get heat.
For example, the Daikin DM96TN/DC96TN (July 2023) manual includes termination arrangements measured above anticipated snow level. Your furnace and any vent kit need their own applicable instructions. Daikin vent termination examples, pages 13–17.
Ask for a recurrence plan
We recommend a service call that addresses the location, rather than only restarting the furnace. Ask whether the installed termination fits the exact model, the vent kit, and the site's snow exposure. If a change is proposed, request the approved configuration and confirmation that the complete piping arrangement still fits the equipment requirements.
The best follow-up leaves you knowing which area must stay clear, which care you can safely do, and when to stop and call. A new height or shape suggested in a discussion thread is not enough evidence for your installation.
The technician also needs to decide whether the blocked opening caused this heating failure or whether a second fault remains. A furnace running once does not establish that every relevant concern was checked.
Take care of the cold house now
Tell the service company the current indoor temperature, whether it is falling, and whether anyone needs extra help staying warm. Ask for an actual appointment or update time. If repair cannot happen soon enough, arrange another warm place rather than relying on an uncertain overnight restart.
If you use a portable electric heater while waiting, keep it at least three feet from things that can burn, plug it directly into a wall outlet, and turn it off for sleep. Never leave it running unattended. CPSC portable-heater safety. CPSC winter heating guidance. This is limited room heat, not assurance that the whole home or its pipes are protected.
Your next action is to report the blocked intake and heating loss, with the exterior photo if safely available, and request both immediate help and a documented prevention plan.