Public buildings and ministries
Public building: what to request in the duct cleaning tender
A poorly written tender is won by the lowest bid and received without knowing what was cleaned. A well written one demands evidence any official can check.
By Limpieza de Ductos Panamá
The tender asks for four things: a prior camera inspection that sets the real scope section by section, a cleaning method described with reference to an industry standard, verifiable deliverables with a report per area plus before and after photos and video, and an acceptance criterion that compares that material with the initial condition. Whatever cannot be verified at acceptance should not be in the tender.
Minimum technical requirements of the tender
The first requirement is the scope, and the scope is unknown until someone looks inside. The tender should separate two phases: a camera inspection of the ducts on each floor, with a report, and a cleaning limited to the sections that inspection flags. Tendering the cleaning of the whole system forces the vendor to quote blind and the official to accept blind.
The second requirement is the method. The NADCA ACR standard, in its 2025 edition, describes the assessment, cleaning and restoration of air systems, and ASHRAE Standard 180 sets inspection and maintenance practices for commercial systems. Neither is mandatory in Panama, but they work as a technical reference the tender can cite so that bids are measured with the same yardstick. The camera review of the inside of each section is the piece that links both phases.
- Inventory of units and the areas each one serves, provided by the institution or surveyed by the vendor in the first phase.
- Camera inspection documented section by section, before any cleaning.
- Cleaning method described in writing, with reference to the standard it follows.
- Protection of offices, records and equipment during the work, with return registers blocked in the zone being worked on.
- Identified staff and hours outside public service time, as the institution indicates.
- Waste handling and final cleanup of each area worked on.
Deliverables: report, photos and video
The deliverable is what the institution keeps once the vendor leaves. It should be requested in a format that allows visits to be compared: one sheet per floor or per unit, with the condition of each section before and after, photos taken from the same spot and the camera video as a digital file. The EPA air quality guide for building managers recommends keeping records of the air system that allow its maintenance to be tracked over time, and that is the real use of the report.
Anyone who needs to see the real condition of the ducts in the case of public buildings and ministries can request a camera inspection from the team at Climatiza, a technical duct cleaning service in Panama, which documents every section with images.
| Deliverable | What it must contain | What it is for |
|---|---|---|
| Report per area | Unit, sections reviewed, findings, what was cleaned and what was not | Basis for acceptance and for the next contract |
| Before and after photos | Same spot, same orientation, dated | Objective comparison, without depending on who was present |
| Camera video | Digital file per section, labeled | Later review by another technician or by an audit |
| Pending list | Sections without access, damage found, recommendations | Prevents what was not reviewed from being assumed clean |
How to evaluate the proposals
When the tender demands a method and deliverables, evaluation stops being purely economic. It makes sense to weigh documented experience in multi-storey buildings, the vendor’s own camera equipment, the work plan by floors and hours, and a sample report from another client with its details hidden. A bid that leaves out the inspection phase or promises health outcomes should lose points, because the EPA and the CDC note that duct cleaning has not been shown to prevent health problems.
Comparing with what a courthouse with a hearing calendar and controlled access demands helps calibrate: there the schedule plan weighs as much as the method. The same goes for a ministry with public service desks, and how the work is organized by floors and permits in an institution is what the proposal must show it understands.
Common mistakes in duct tenders
The mistakes repeat from one institution to the next because tenders are copied from other tenders. These are the ones that hurt most at acceptance.
- Asking for a full cleaning with no prior inspection and no list of sections.
- Requiring chemical products to be applied inside the duct without saying which, why or how it is verified.
- Fixing a frequency in the contract without having seen the real condition of the system.
- Leaving out who from the institution escorts, opens machine rooms and signs off each day.
- Not asking for the video: a photo can be argued about, the camera run cannot.
- Accepting with a single general record instead of per area, which makes it impossible to claim a specific floor.
What to demand at acceptance of the service
Acceptance is the moment the tender is fulfilled or turns into paper. It is done per area, report in hand and, if there are doubts, with a camera that repeats the run through sections chosen by the institution, not by the vendor. The criteria that say when a duct needs cleaning also work in reverse: if after the work the camera still shows loose deposit, that section is not accepted.
- Check the report against the inventory. Every unit and every section in the inventory appears in the report as cleaned, monitored or without access. Nothing is left unclassified.
- Camera sampling. The institution picks a few sections and asks for the run to be repeated in its presence. It is compared with the video delivered.
- Check the physical state of the area. Access panels closed, grilles back in place, ceilings undamaged, offices clean. Anything missing goes into the record.
- Record per area and filing of the material. The record cites the report, the photos and the video, and is filed with them. For the next tender, the duct technical guide provides the vocabulary to read that material.
To ask about availability or request a camera inspection, the Climatiza website lists the ways to contact the team and the duct cleaning service page explains how the work is organized.
Sources
On this site
- Public buildings and ministriesHow the work is organized in this sector
- CourtsA neighboring sector
- Camera inspectionThe real condition before deciding
Climatiza and Radar Panamá
Frequently asked questions
Should the tender set how often cleaning is done?
Better not. Frequency comes from the real condition the camera shows and from the use of each floor, not from a figure written before looking. The tender can set how often the inspection happens and let the cleaning depend on what that inspection finds.
Can inspection and cleaning be tendered separately?
Yes, and it is usually clearer for the institution. An inspection contract with a report makes it possible to write the cleaning tender with specific sections. If both are tendered together, the tender must make clear that cleaning is carried out only on the sections flagged by the first phase report.
What about sections without access?
They are noted as not reviewed, with the reason: no access panel, fixed ceiling, restricted area. The tender should anticipate that case so the vendor does not assume them clean and the institution does not claim them as a breach. Opening new access panels is a separate decision, with a different person responsible.
What technical reference can be cited in the tender?
The NADCA ACR standard for assessment and cleaning of systems, and ASHRAE Standard 180 for inspection and maintenance of commercial systems. Neither is mandatory in Panama, so they are cited as a method reference, not as a legal requirement.
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Do you want to know the condition of your system?
A camera inspection lets you see the inside of the ducts before deciding what to do. Message us and we will confirm availability.
- +507 6388-2083
- info@climatizapanama.com
- Calle Gervasio García, 8, Panama City