Long Engineering

House, Condo / Apartment, Townhouse, Commercial

Single-level building, Two-story building, Three-story building, High-rise building

Less than 1,000 sq ft, 1,000 – 2,000 sq ft, 2,000 – 3,000 sq ft, 3,000 – 4,000 sq ft, More than 4,000 sq ft

Heating and cooling, Dryer, Exhaust (bathroom / kitchen), Other types of ducts and vents

1 – 5 vents, 6 – 10 vents, 11 – 20 vents, Other number of vents