The oldest housing in the metro outside the Loop — Pasadena’s median home dates to 1977, Baytown’s to 1981, a fifth of Baytown’s stock predates 1960 — along the industrial corridor, where what settles on the windowsills also settles in the returns.
This is where the duct age question is oldest. Houses built in the 1950s through 1970s in Pasadena, Deer Park and Baytown were built with metal trunk lines and, often, later flex branches, and a system that has run fifty summers without anyone opening the plenum is the strongest version of the “never been cleaned” case on this site. It is also where the flex, where it exists, is furthest past its life, so the honest first visit here is an assessment more often than a cleaning.
The Ship Channel and the refinery corridor add ambient particulate that other zones do not have, and the May 2024 derecho measured its strongest gust, 78 mph, at Highlands on the Baytown side. Wind takes shingles, water follows, and wet attic insulation next to old flex duct is the zone’s recurring finding.
Metal trunk can be cleaned properly and often should be after fifty years; it is the flex branches added later that are the question. Have someone look before quoting.
Not by itself. It is a filter question first. If the registers are blowing visible material, then yes.
No. Same ranges. Older single-story houses on one system are the low end of the table.
Say the suburb and what you are seeing. The scope comes back in writing from the contractor who covers this part of the metro.
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Houston Duct