HVAC & Air Duct Mold Removal in Castalian Springs, TN

What happens when you call

The call connects you with an independent local mold remediation company. Expect a few questions first: where the air handler sits, how old the system is, whether the smell follows the blower, and whether water has gotten under the house recently. A site visit usually covers:

• Opening the air handler to look at the coil, drip pan and blower.
• Checking the supply and return plenums and whatever duct runs can be reached.
• Moisture readings in the crawl space or attic around the ductwork.
• Photos and a written scope that lists what gets cleaned, what gets replaced and what moisture repair is needed.

What it costs

Angi reports national ranges of about $600 to $2,000 for mold cleaning in air ducts and $3,000 to $10,000 for mold work on full HVAC systems. Rural Sumner County prices vary. The biggest swings come from how much lined duct, duct board or flex duct must be thrown out, whether the coil or blower needs deep cleaning, and how hard the equipment is to reach. Jobs of $25,000 or more need a contractor with a Tennessee contractor's license, and mold remediation is the S-F classification.

Conditions around Castalian Springs

Castalian Springs is rural, home to the Wynnewood State Historic Site and Bledsoe's Fort Historical Park, and its houses deal with the same Middle Tennessee humidity as everywhere else in the county. Sumner County's Flood Insurance Study notes that intense local rainfall can push headwater streams out of their banks quickly, with major floods typically in late winter and early spring. A crawl space that collects runoff in those storms can soak duct insulation and the bottom of an air handler. Most of the time, though, the cause is simpler: humid summer air meeting cold supply ducts, or an AC drain that has quietly stopped flowing. EPA's advice is the same for either one: control the moisture and the mold stays away.

Because Castalian Springs is unincorporated, permits for replacing ductwork or equipment come from the Sumner County Building & Codes Department in Gallatin. If you rent and the landlord won't fix a leak or moisture problem, the department's property maintenance complaint form is the place to report it.

Before the company arrives

• Leave the system off, and note when the smell started.
• Clear a path to the air handler, the crawl space door or the attic hatch.
• Pull the filter and set it aside in a bag so the company can see it.
• Write down any recent storms, leaks or service calls on the unit.