Most kitchen ventilation tenders are not lost on price. They are lost on the response: a missed form, an unsigned page, a compliance statement full of hidden exceptions, a pricing schedule that quietly rewrites the scope, or airflow figures that contradict the specification the issuer spent months writing. Evaluators score what they can verify, and they disqualify what they cannot. This guide is written for the contractor, engineer or equipment supplier answering a commercial kitchen ventilation tender — the responder’s side of the document the issuer drafted.
Read the Evaluation Criteria Before You Read the Specification
The instinct is to open the technical specification first. Resist it. The evaluation criteria tell you how the decision will actually be made, and everything you write afterwards should be shaped by them. A typical ventilation package is scored on a split somewhere near 60 to 70 percent technical and 30 to 40 percent commercial, but the structure matters more than the split: identify which requirements are pass-fail gates and which are scored points. Gates are things like mandatory certification, insurance, a signed declaration, or a submission format rule — miss one and the bid never reaches scoring. Points are things like energy efficiency, maintenance regime, delivery programme, and reference projects.
Allocate effort the same way. A beautifully written response that fails a gate scores zero. A plain response that clears every gate and picks up points on the scored criteria wins. Build a two-column effort plan: one column for gate compliance, one for scored criteria, and write the response against that plan rather than against the document’s own chapter order.
| Criterion type | Typical items in a kitchen ventilation package | Response implication |
|---|---|---|
| Pass-fail gate | CE or equivalent documentation, insurance certificates, bid bond, signed declaration, submission forms, page limits | Binary; checklist and verify twice |
| Scored — technical | Airflow design, grease filtration efficiency, odour stage, duct and access design, maintenance regime, noise data | Evidence beats adjectives: attach test reports and calculations |
| Scored — commercial | Price schedule, delivery programme, warranty terms, payment conditions, references | Price exactly the form given; do not restructure it |
The Compliance Matrix: Your First Document
Before writing a single proposal page, build a compliance matrix — a table that walks the entire tender clause by clause and states, for each requirement, whether you comply fully, comply with deviation, or cannot comply. Four columns are enough: clause reference, requirement in short, your status, and the evidence you attach.
| Clause | Requirement (abridged) | Status | Evidence attached |
|---|---|---|---|
| 4.2 | Exhaust airflow not less than 12,000 m3/h total at the design duty point | Comply | Fan curve at duty point; calculation sheet |
| 5.1 | Grease filtration not less than 95 percent on the first stage | Comply | ESP cell type-test report |
| 6.3 | Duct access panels at maximum 3 m centres | Comply | Duct layout drawing, section detail |
| 7.4 | Odour control to achieve no nuisance at nearest receptor | Comply with deviation | Carbon sizing note: activated carbon mass proposed per saturation interval |
| 9.1 | Welding by certified welders only | Comply | Welder qualification certificates |
Three disciplines make the matrix work. First, never submit a blanket “we fully comply with all requirements” statement unless it is literally true line by line — evaluators read it as an admission that you did not read the document, and any deviation discovered later reads as misrepresentation. Second, “conditional compliance” is not a status; if you comply subject to a condition, that is a deviation and belongs on the deviation sheet. Third, every deviation needs a reason and an equivalent-or-better justification, because a deviation that improves the outcome is a selling point while an unexplained one is a risk flag.
Price the Scope as Written, Not the Scope You Prefer
The single most common scoring failure in ventilation tenders is a price built on a different architecture than the one specified. If the tender asks for a ducted extraction train with rooftop discharge and your price assumes a recirculating solution because that is what you sell most of, the evaluator will find the mismatch in the first ten minutes — and the bid either reads as non-compliant or as a deliberate bait price. Price the scope as written. If you believe the specified architecture is wrong for the building, there is a correct place to say so, and it is covered below.
Discipline the pricing schedule itself. Use the issuer’s form, its line order and its units, even when the order seems awkward — the arithmetic is often checked against the form, not against your workbook. State an exclusions list explicitly: structural works, builders’ work penetrations, electrical supply to the isolator, scaffolding, permits, and commissioning power are the usual boundary items, and an unstated exclusion is a future dispute. Where the form has provisional quantities, price unit rates you can genuinely honour, because variations are negotiated against those rates. And keep an assumptions register — a one-page list of what your price assumes about the site, drawn from the tender or from the site visit — because when a dispute starts, the assumptions register is the document that protects both sides.
A pricing schedule with rewritten line items, a different currency, or a validity shorter than the tender requires is not a competitive bid; it is a formatting error wearing a discount.
Clarifications: Ask Early, Ask Narrowly
Every tender runs a clarification window, and how you use it signals your competence. Ask early — a question in the final 48 hours looks like an unprepared bidder and often gets no answer in time to matter. Ask narrowly: one question, one clause, one ambiguity. “Please clarify section 6.3: is access panel spacing measured along the duct centreline or along the duct surface?” reads as a contractor who has read the drawings; “please provide more details on ventilation” reads as one who has not.
Do not ask what the documents already answer. Evaluation panels keep score of clarifications, and a question answered by drawing sheet 4 or clause 9.2 costs credibility you will want later. And never treat a clarification answer as an invitation to re-price silently — if an answer materially changes your cost, request the change in scope formally through the tenderer’s process, in writing, before submission.
Evidence That Scores
Scored technical criteria are won with documents, not descriptions. Assemble the pack before you write, because the writing is largely the thread that connects the evidence. The documents that repeatedly decide ventilation tenders:
Fan performance curves showing the offered unit at the design duty point — not a peak-performance headline — with static pressure and power draw at that point. Type-test or performance reports for the grease separation stage; for an electrostatic system this means a report on the ESP cell showing collection efficiency under a stated test protocol, which is the document facility auditors and fire authorities both read. Odour-stage sizing: the activated carbon mass, the contact time it provides at design airflow, and the replacement interval the price assumes. Noise data at a stated distance and duty, corrected for background where the tender requires it. Maintenance regime: the filter wash interval, carbon replacement interval, duct cleaning cadence, and who performs each. And project references of comparable duty — cuisine type and scale, not just restaurant count — with contacts the evaluator may call.
Certification documentation is part of the same pack, not an annex to think about later. European tenders expect CE declarations per offered unit; fire-authority jurisdictions respond to component test reports; and any tender that names a standard — EN 16282, DW/172, NFPA 96 or a national equivalent — expects the response to reference the same clauses the specification does, in the same numbering.
The Errors That Disqualify
Most disqualified bids die on administration, not engineering. Before submission, run the list:
Missing or unsigned forms; submissions over the stated page limit; a missing or expired bid bond or insurance certificate; bid validity shorter than the tender demands; pricing in the wrong currency or with a different tax treatment; arithmetic that does not total on the pricing form; datasheets that describe a different model than the one offered; airflow figures inconsistent between the calculation sheet, the datasheet and the pricing schedule; a fully compliant statement contradicted by the deviation sheet; an exceptions list that excepts half the specification; and, most final of all, a late submission — electronic portals close hard and postal delays are not appeals.
None of these reflect on your engineering. All of them reflect on the review discipline of the team that submitted. The fix is procedural: one named person owns the compliance checklist, and submission happens at least 24 hours before the deadline, not in it.
Offering an Alternative Without Losing the Base Bid
Sometimes the specified architecture genuinely does not fit the building — a duct route the shaft cannot take, a rooftop the landlord will not release, a ceiling height that rules out a suspended canopy. The correct structure is a fully compliant base offer priced exactly as specified, followed by a clearly separated alternative offer: “Option 1, in accordance with the specification; Option 2, a recirculating alternative, with its own pricing, its own evidence pack, and an explanation of what it changes.” Submitting only the alternative reads as non-compliance; burying the alternative inside the base price reads as a bait offer. A clean option structure, by contrast, often wins — evaluators appreciate a bidder who respects the document and improves the outcome in the same submission.
After Submission: Hold the Line You Drew
Between submission and award come clarifications on your bid, and occasionally a negotiation call. Answer the clarification questions in writing, within the process, and do not volunteer re-pricing. If negotiation opens, hold the acceptance criteria: trading on lead time or payment terms is normal commercial life, but quietly relaxing the maintenance regime, the filtration efficiency or the access provisions to close a price gap converts a won tender into a future defect claim. The response you submitted is now the baseline of the contract — everything you conceded silently during bidding is everything the client believes they bought.
A Worked Example: One Clause, Checked Properly
Take a realistic clause: the specification requires total exhaust of 9,000 m3/h for a kitchen with a 4 m heavy-duty cookline and a 2 m griddle line. Before pricing anything, run the check. Four metres of heavy-duty cooking at roughly 2,500 m3/h per metre demands about 10,000 m3/h on its own; two metres of light griddling at roughly 2,000 m3/h per metre adds about 4,000; the design total lands near 14,000 m3/h. The specified figure is about 35 percent below the derivation — well outside the 30 percent divergence band that warrants re-derivation, and enough to change fan selection, duct sizing, electrical loading and price.
What the disciplined bidder does next is the whole lesson: not a silent markup, not a compliant price on an impossible number, but a clarification question with the calculation attached — “clause 4.2 states 9,000 m3/h; our appliance-schedule derivation totals approximately 14,000 m3/h; please confirm the design basis.” If the issuer corrects the figure, the price is right and the evaluator has already seen your engineering. If the issuer insists on 9,000, the assumptions register records the design basis you priced against, and the deviation sheet carries it. Either way, the clause that could have disqualified the bid becomes evidence of competence.
The Response Library: Build Once, Answer Faster
Tendering is a repeatable discipline, and the second bid should cost half the effort of the first. Keep a response library: the compliance matrix template with the standard clause categories; the boilerplate method statements for extraction, filtration, odour control, duct construction and maintenance; the evidence pack with current type-test reports, fan curves and declarations; the assumptions register format; and the pricing-form checklist. After every submission, add what the tender taught you — a new clause pattern, a certification you had to chase, a question the evaluators asked in clarification.
Feed the library from results, not just from effort. When a bid loses, request debrief feedback where the process allows it, and file the reason against the section that failed: a lost scoring band on maintenance regime means the regime section needs evidence, not adjectives. Over a year, the library turns tender response from a scramble into an assembly job — and the assembly job is what lets a smaller supplier beat a larger one on the scored criteria that actually decide the award.
Matching the Response to the Equipment Reality
Strong responses are also honest about what the offered range covers. Where the tender specifies a ducted package — high-volume kitchens, rooftop plant, shared risers in food courts — the ducted ESP purifier range with its matching centrifugal fans answers that scope with the duty-point evidence the evaluator expects. Where the tender is a fit-out package in a mall unit, a basement or a heritage building with no duct route, the ductless range hood range is not a compromise but the engineering answer — and in those responses the N-series covers the light-fume lines, the ND-series covers fryers, woks and grills, and the Odor Removal Tower carries the odour stage wherever receptors sit close. Where a tender involves street trading pitches, market halls or event infrastructure, the ventless catering cart family gives the evaluator a demonstrable, self-contained option with its own compliance pack.
The pattern is the same across all three: declare the architecture you are offering, attach the evidence at the duty point, state the consumables regime in the price, and let the compliance matrix carry the argument.
The Response Is the Product
A tender response is the first deliverable the client receives from you, and they will read it as a sample of how you build. A bid with a complete compliance matrix, an honest deviation sheet, a pricing schedule that matches the form, and evidence at the design duty point tells the evaluator everything a reference letter cannot: that this supplier’s paperwork will look like this in year three. Answer the document they wrote, not the one you wished they had — and the points look after themselves.
