Presented to: Douglas A. King Builders, Inc.
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475 Washington Street
Wrentham, MA 02093
Project Date: 4/26/21
Contact: Tony Fernandes, Facility Mgr.
Technician Reporting: John Cox ASCS, VSMR
Table of Contents:
The HVAC system and network of air ducts were visually inspected and cleaned. The information in this report is private and shared only with the assigned designees of Douglas A. King Builders, Inc. (DAK). Interpretation of the data collected in this assessment is meant to inform DAK as to the condition of their HVAC system and other potential issues related to this property.
The work area consisted of a ten office workspace. The Property had one air handler(see specifications below). There were a total 15 registers, thirteen supply and two returns. including returns. 225 feet of flex duct was cleaned as was 50 feet of return duct including the main trunk. Multiple access points were used to allow for manual cleaning and to attach a negative air machine. Upon departure all door handles, light switches and other touchable surfaces were sanitized.
Additional On-site Repairs/Areas of concern:
There were no immediate concerns with the HVAC systems and no visible repairs that needed to be made.
2. Project & System Specifications
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3. Air Handler(s)
One forced hot air furnace was inspected, cataloged and cleaned. The systems was in good working order. No biological growth to be reported inside the systems. The unit had humidity and moisture levels well within accepted tolerances. See photo slide-deck.
5. Ductwork, Registers & Vents
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Fans, Vents & Registers: Fifteen (15) 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 Trunk: Supply trunk was found to be sealed and was cleared of moderate dust. It was free of both moisture and biological contaminants.
Ductwork: Some of the 8" flex duct connections were found in need of sealing. This was remedied with the use of zip ties and foil tape. The -office space was left sealed and intact. Ductwork contained a moderate level of dust. Access points were used in both the supply and return 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).
6. Containment, Equipment & Condensers
Containment Special attention was paid to containment. Furniture, carpets, and electronics throughout the space were covered with .3 mil plastic to prevent cross-contamination.
Equipment: Nikro 5000 CFM Negative Air Machine. 2-Stage HEPA Filtration with 99.97% fliltration. 5" static pressure, 115v/13 each of two motors. Varying sizes of Nylon and Silica rotating brushes (whips). 115v electric oil-free air compressor with forward & reverse blowing nozzles.
Condenser unit had been previously inspected and cleaned during a scheduled roof-filter change.