First time poster in need of advice. I am in the process of having a new furnace quoted for a northern Michigan part-time residence. The basement area (700 square feet, three rooms) has never warmed particularly well, and I have been told it would benefit from additional cold air return.

In this instance, installing a floor-level return is a physical challenge. Contractor #1 proposes to run a return in two rooms; in each case the return would be in the ceiling located about 7 feet from the ceiling heat vent. Contractor #2 proposes to run a single floor-level return in an area that would generally serve both of these rooms. This contractor has no faith in a ceiling cold air return.

I am wondering if I should insist upon floor-level placement. Best course of action? All thoughts are welcome.
Thank you,