lasagna. 1  large, flat, rectangular strips of pasta. 2  a baked dish consisting of layers of this pasta, cheese, tomato sauce, and usually meat.
1 Replacing aging, leaking or inadequate ductwork typically costs about $35-$55 a linear foot for labor and materials, or $1,000-$5,000 or more for a single-family home, depending on the length and type of ducts used (sheet metal, fiberduct or round flexible ductwork) and local rates. And a Virginia homeowner reports spending $450 for DIY installation of modern ductwork in a basement (the least expensive bid for professional installation was $2,500).
Residential vs Commercial. The average cost of keeping your residential ductwork orderly is going to vary greatly from that of a commercial building. This is because commercial air ducts are often larger and more extensive. Residential cleanings can cost an average of about $20-$30 per vent. For commercial buildings, service providers must do an estimate of your space before they can provide an accurate quote. Before factoring in the materials and the number A/C and furnace units, you can expect a commercial project to cost at least $35-$50 per hour.