Photo-verification Report

HVAC System care and duct cleaning

225 Adams Street, Waltham

October 29, 2021

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Work done/Assessment:

HVAC system care and duct cleaning. One air handler unit cleaned. Supply and Return main trunks and associated ductwork and registers were mechanically cleaned with rotating brushes (whips). Compressed air was then blown through the system and all debris was captured in a Nikro 5000cfm HEPA negative air machine. A significant amount of debris was found in the return vents, main trunk and return plenumSeveral return vents were sealed with foil tape to prevent air escape. No biological growth to be reported inside the system. The unit had humidity and moisture levels well within accepted tolerances. See photo slide-deck.

Fans, Vents & Registers: Vents and registers were removed in order to accessed ductwork for manual cleaning. Registers were summarily cleaned and replaced in a pre-recorded order.

Main Trunks: Supply and return trunks were found to be sealed and was cleared of a significant amount of debris. Unit was free of both moisture and biological contaminants.  

Ductwork:  Duct connections were found intact. The home space was left sealed and intact. Ductwork contained a significant amount of debris, and was cleared. Access points were used in the ductwork to attach a Nikro 5,000 CFM HEPA negative air machine. Interior of ductwork was cleaned using mechanically rotating brushes and a 20' flexible cable with a 8" nylon brush (whip).


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