Before requesting a commercial lighting retrofit quote, document each fixture group—not just the fixture face. Record its location, application, quantity, visible labels, dimensions, mounting, controls, operating conditions, access limits, and environmental exposure. Then separate known observations from details that require confirmation by an electrician, controls specialist, manufacturer, or site-visit professional.
Use the process below as an existing fixture audit checklist. It helps a supplier or contractor price the right scope without assuming that a similar-looking fixture is compatible.
Record the Existing Fixture and Its Location
Start with an area-by-area inventory. Give each room, zone, pole, or fixture group an ID, then record the fixture type, quantity, application, condition, operating schedule, and outliers. This establishes the scope for a commercial lighting retrofit, but it does not confirm final fit or compatibility.
A national laboratory lighting retrofit workbook uses application areas, fixture types, quantities, lamp or driver details, operating time, and condition as core audit inputs. For operating hours, area-specific lighting audit guidance is a useful reminder to ask about actual schedules and overrides rather than applying one assumption to the entire building.
Use one row per fixture group when the units appear to share the same application and installation context. Separate outliers when their mounting, controls, condition, operating schedule, or environment differs.
- Location ID: Building, room, aisle, bay, exterior elevation, pole, or area name.
- Inventory: Fixture count, visible fixture form, lamp or LED arrangement, housing style, and approximate age only if known.
- Identification: Manufacturer, model, catalog number, lamp or driver label, wattage marking, and readable nameplate details.
- Application: Warehouse aisle, office, shop, parking area, loading zone, exterior wall, or another specific task area.
- Condition: Normal operation, failed unit, flicker, delayed start, partial outage, discoloration, damage, water evidence, or recurring failure.
- Operations: Weekday, weekend, shift, cleaning, occupancy, timer, or override behavior when operators can provide it.
- Open questions: Unknown wattage, driver, age, operating hours, control type, or whether the group actually matches nearby fixtures.
Keep “unknown” as a deliberate status instead of filling gaps with estimates. A readable label from one representative fixture may help identify a group, but confirm that the other units share the same form and installation conditions before grouping them.
If you are surveying high bays, compare replacement options only after documenting the fixture group. A related guide to UFO or linear high bay options can help frame that category discussion; it should not be treated as proof that any replacement fits your existing installation.
Measure the Opening, Mounting, and Clearance
Measure the physical conditions that control fit and installation effort: footprint, opening, depth, mounting points, attachment method, junction-box or suspension location, and clearances. If a critical dimension or support condition is concealed or inaccessible, classify the group as verify first or site visit instead of guessing from a photo.
The distinction among a replacement lamp, retrofit kit, and complete luminaire matters before you assume the existing housing will be retained. The DOE/FEMP retrofit guide describes these as different paths and emphasizes surveying the existing luminaire before selecting one. Its examples focus on fluorescent troffers, so apply the decision logic broadly without transferring fixture-specific dimensions to another product type.
| Field to capture | How to measure or photograph it | Why it affects replacement fit |
|---|---|---|
| Footprint, opening, and depth | Measure length, width, visible cutout, housing depth, and any trim or flange; photograph the measurement context. | A replacement may not cover the opening, clear the cavity, or fit the available depth. |
| Mounting points and attachment | Record hole spacing, brackets, chains, aircraft cable, arms, surface fasteners, or other visible attachment details. | Different mounting patterns can add hardware, labor, or a site-review requirement. |
| Junction box, conduit, whip, or suspension location | Photograph where wiring and support approach the fixture; note whether the connection is visible. | The connection route can affect fixture placement and installation scope. |
| Ceiling, pole, or wall clearance | Measure or photograph nearby structure, obstructions, neighboring fixtures, and service clearance. | Tight or obstructed spaces can change the replacement path and access plan. |
Pricing Readiness by Fixture Group
Use this categorical matrix to decide whether the survey supports preliminary pricing. It is a planning classification—not a code, safety, structural, or compatibility determination.
| Status | Evidence available | Next action |
|---|---|---|
| Ready for preliminary pricing | Location, count, representative identity, major dimensions, mounting context, labeled photos, and no obvious open technical issue. | Request preliminary pricing and ask the bidder to state assumptions. |
| Verify first | A key dimension, control, electrical detail, support condition, environmental factor, or clearance remains unknown. | Request documentation review from the appropriate electrician, controls specialist, manufacturer, or contractor. |
| Site visit | Access is constrained or unsafe, support or junction-box conditions are concealed, labels are missing across the group, or the application is unusual. | Request a controlled site assessment before treating the group as quote-ready. |
Measurements taken from a distance are preliminary when fit depends on a tight opening, concealed support, custom mounting, or a precise wiring route. Do not call a fixture a direct replacement because its housing looks similar or its connector appears familiar.
Verify Electrical, Controls, and Replacement Boundaries
Capture visible electrical and control evidence, but treat it as documentation—not approval. Supply, circuit loading, wiring condition, emergency behavior, control interoperability, and final compatibility require review by qualified personnel or against applicable manufacturer documentation.
Document the Electrical Supply and Circuit
Record only what is safely visible and accessible. Do not open energized equipment or perform electrical testing as part of a general field survey.
| Detail to document | Field evidence | Who confirms it |
|---|---|---|
| Supply and circuit identity | Panel, circuit, disconnect, or branch identifiers visible without unsafe access. | Qualified electrician or project electrical authority. |
| Driver, ballast, connector, and wiring information | Readable labels, connector type, remote-driver location, and visible wiring condition. | Electrician and, where needed, manufacturer documentation. |
| Emergency or backup arrangement | Emergency fixture marking, battery or backup indication, and observed behavior reported by operators. | Electrician, emergency-lighting specialist, or project authority. |
| Load and circuit behavior | Symptoms such as nuisance shutoff, partial outage, delayed start, or repeated failure. | Qualified electrician; do not infer load or inrush suitability from symptoms alone. |
A DOE guide on measurement and verification assigns live-panel measurement and related electrical work to electricians or trained personnel. Route energized testing, circuit loading, wiring condition, emergency connections, and circuit changes to that professional review.
Identify Controls and Operating Behavior
List every control component that may affect the fixture group, including controls mounted away from the fixture. A control can change the replacement decision even when the new housing appears to fit.
- Wall switches, timers, relays, occupancy or vacancy sensors, and daylight sensors.
- Dimming method, including any visible low-voltage or network control wiring.
- Emergency controls, remote drivers, contactors, and shared-control arrangements.
- Symptoms such as flicker, delayed start, unwanted shutoff, partial operation, or different behavior between neighboring fixtures.
The DOE retrofit guidance warns that sensors do not work with every retrofit product. Have an electrician, controls specialist, or manufacturer confirm interoperability and commissioning requirements before approval. A familiar connector, visible voltage label, or physical fit is not enough.
Separate Safe Field Capture From Technical Approval
Managers, purchasing teams, and contractors can organize counts, labels, dimensions, photos, access notes, and operator-reported symptoms when doing so is safe. Qualified professionals should handle energized testing, circuit changes, structural questions, and final electrical or controls approval. Keep those boundaries clear in the quote request so a preliminary product suggestion is not mistaken for an approved installation.
Capture Photos and Site Conditions That Affect Installation
A useful photo set shows more than the light-emitting surface. Capture the fixture group in context, a readable label, the housing and mounting arrangement, controls, nearby obstructions, and conditions that could affect access or application review. Tie every file to the same location ID used in the inventory.
Build a Quote-Ready Photo Set
For each representative fixture and important outlier, use a consistent sequence:
- Area context: Show the room, aisle, pole, wall, ceiling, or surrounding work area so the reviewer can locate the fixture.
- Fixture face and housing: Capture a straight-on view and a profile or underside view that shows the form and apparent condition.
- Label or nameplate: Take a focused image of the manufacturer, model, lamp, driver, wattage, or other readable identification.
- Mounting and connection context: Show the bracket, chain, cable, arm, junction box, conduit, whip, or suspension arrangement where visible.
- Controls and neighboring conditions: Photograph sensors, switches, control hardware, damage, obstructions, and nearby fixtures that may reveal an outlier.
This sequence follows a useful utility-program documentation pattern: the Oncor Measure File Guide ties fixture records to location references and calls for label, fixture, area, and control images. That guide is not a universal US requirement, but its method makes the photos needed for a lighting retrofit quote easier to match and review.
Name files with the location ID and view, such as BldgA-Aisle3-FG02-label or Shop-PanelWall-FG04-context. If a view cannot be captured safely, mark it missing and request a controlled site visit rather than improvising access or testing.
Record Access, Schedule, and Environmental Exposure
Add site notes that could change labor, sequencing, product review, or the need for professional escalation.
| Site condition | Field note or photo | Decision it may affect |
|---|---|---|
| Access and occupancy | Ceiling or pole height, lift or ladder access, aisle congestion, occupied work areas, and shutdown windows. | Access equipment, scheduling, phasing, and safe work planning. |
| Support and obstructions | Ceiling, pole, wall, bracket, junction-box condition, nearby equipment, and clearance limits. | Mounting review, attachment changes, or a site visit. |
| Environment | Dust, moisture, heat, cold, vibration, impact, washdown, outdoor exposure, or water intrusion. | Application and rating review against current product documentation. |
| Operating history | Recurring failures, overheating signs, flicker, corrosion, or seasonal behavior. | Failure analysis, control review, and whether a routine replacement assumption is appropriate. |
Unsafe access, damaged support, water intrusion, overheating, or energized equipment should not be treated as routine survey details. Escalate the condition through the site’s safety process and appropriate professional review before calling the fixture group ready for replacement.
Turn the Survey Into a Commercial Lighting Retrofit Quote Request
Package the survey by fixture group and clearly separate observed facts, requested scope, and open verification items. Ask the recipient to identify fit, electrical, controls, mounting, labor, access, and site-visit assumptions in writing; a preliminary quote is not final compatibility approval.
- Consolidate the inventory. Include location IDs, counts, fixture identity, application, condition, operating schedule, and outliers.
- Attach the physical evidence. Add dimensions, mounting notes, clearance observations, and location-labeled photos for representative fixtures and exceptions.
- List unresolved items. Identify unknown supply, driver or ballast, load, controls, emergency behavior, support, access, environmental exposure, and project-requirement details.
- State the requested scope. Explain whether you want preliminary pricing, a lamp or kit assessment, complete-luminaire options, phased replacement, shutdown planning, or a site-based design review.
- Request a written review. Ask the bidder to distinguish preliminary product suggestions from confirmed compatibility and to state labor, access equipment, mounting changes, controls work, electrical review, and site-visit assumptions.
The GSA LED and Controls Guidance offers a useful process for documenting existing conditions, retrofit-fit questions, assumptions, and review steps. It is GSA guidance, not a universal commercial procurement requirement.
End every fixture group with one status: ready for preliminary pricing, verify first, or site visit. If the application is documented and the group is a warehouse high bay, you can use warehouse lighting options as a browsing path after the survey—not as proof that any listed fixture fits. When key conditions remain unresolved, request technical support or a lighting design assessment before placing an order.
FAQs
These questions address common gaps that can keep a fixture group from being quote-ready.
What Makes a Commercial Light a Direct Replacement?
A direct replacement must match more than the fixture’s appearance. Confirm the opening, mounting, electrical supply, controls, environment, and project requirements; a familiar connector alone does not establish compatibility.
Which Electrical Details Require an Electrician?
Energized testing, circuit loading, wiring, emergency connections, control wiring, and circuit changes require qualified review. Field notes can document these items but do not approve them.
What If the Fixture Label Is Missing?
Record dimensions, mounting, controls, photos, symptoms, access, and environmental conditions. Mark the identity as unknown, separate the fixture from groups with confirmed matching labels, and request a site assessment when key details remain concealed.
Can I Request a Quote Before Measurements Are Complete?
You can request preliminary pricing, provided the bidder receives a clear list of missing measurements and other unresolved fit, electrical, controls, access, or environmental details. Treat the response as preliminary rather than as purchase approval.
