A quotation for a car wash site is a response to site conditions, not a product picked early. What is written about those conditions decides how usable the response is. Where the enquiry carries a bay count and nothing further, everything else falls to assumption, and assumed items are what later show up as change orders, extra freight and equipment that cannot reach the surfaces it was bought for.
Draw the work areas before describing the machines
A car wash site is rarely one room. It is a sequence of areas with different exposure, drainage and clearance: the approach apron where vehicles arrive still carrying road grit, the wash bays themselves, the drying and detailing bays, the wheel-off area where wheels and sills are worked, the plant room holding tanks and chemical dosing, plus drains, gullies and the interceptor chamber that serves them. Send a plan that separates these areas, even a hand sketch with dimensions and an approximate scale, and label the surfaces in each one: painted panels, glass, alloy wheels, plastic wheel arch liners, concrete floor, wall tiling, steel gantry work, and any wall cladding that a lance could mark.
Two dimensions that look obvious matter more than they appear. Ceiling height in the bays controls lance angle, the reach of an overhead arm and whether taller vans and small trucks can be washed at all. Floor slope controls where water goes after the wash; a floor falling away from the gully needs a different method from a floor falling towards it. If one bay is reserved for a different job, say a spray booth or a service pit, mark it as excluded so nobody prices equipment for it.
Utility and disposal facts belong in the first enquiry, not in a later email
Power questions are answered at the distribution board, so attach a photo of the board showing how many spare ways there are, where the nearest point of supply to each bay sits, and which circuit is protected by a residual current device. Then state the length of the run from that point to the work position, because cable length, cable protection and the cost of a spur are all quotation items and none of them can be guessed from a floor area.
Water and drainage come next: source hardness if it is known, whether the supply is mains or a tank, the position of the nearest drain and gully, the position of the interceptor chamber, and where water discarded at shift end may legally go. Rules set by the local authority, not the cleaning method, govern that route. On an open apron those same rules decide whether recovery, separation and treatment are part of the work. That is a site permission question the operator holds and the equipment supplier does not, so it has to appear in the enquiry instead of being argued about after delivery. Also record how the machine will be moved between parking and the bays: door widths, gate heights, internal partitions, steps, kerbs and whether a unit has to be pushed over a drain channel or a cable duct.
Describe the work cycle and the staff who run it
Vehicles drive through or park and the crew moves around them, so the cycle shape drives the layout of equipment as much as vehicle size does. Write down vehicle mix, vehicles per day, how long one bay is occupied, whether the crew works in pairs and how shifts overlap. State which surfaces are in scope on each visit, since engine bay work, sill work and paint work are different tasks with different lance and consumable needs, and note what is in use today and what goes wrong with it. Staff detail changes the selection too: shared headsets and ear defenders, the training level of the operators on shift, and whether the same people maintain the equipment at end of day.
State what is excluded, and how the offer will be tested
A short exclusions list prevents the most common argument. Name the work that is out of scope, such as engine degreasing, wheel-off work, fleet nights or interior work. Then set the acceptance route before orders are placed. On these sites, a full trial on the operator's own floor is expensive, so agree a pre-delivery demonstration on representative panels, sills and alloys against a written list of tasks, and state the site access terms, working hours, escort rules and which person signs the acceptance. State who owns installation, commissioning, consumable supply and first-line support, and whether spare wear parts are stocked locally or shipped.
For a site where the areas, the cycle and the utility situation are fixed but no catalog unit fits them, the enquiry becomes a design brief. PowerDe works this route through its customized steam cleaning equipment service, which starts from the site description rather than from a catalog unit.
What the catalogue can settle, and what only the drawing settles
The catalogue is a good source for movement mode, cleaning methods and the working environment a model is built for; PowerDe cleaning equipment pages list those properties per model, and some entries give a protection item or two. What the listing cannot settle is fit to a particular bay. Reach from one standing position, whether a unit can pass a gate, and how a machine behaves where the floor falls towards an interceptor chamber all depend on the drawing and the cycle description, so treat a catalog model as a candidate and hold the judgement until both are in the same pack.
Where the wash area has a fixed structure, such as a gantry or a permanent bay with a plant room next to it, include the mounting surface and the wall construction in the pack as well. A frame that is bolted down is a different conversation from a frame on wheels, and the answer depends on what the floor and wall can take, which is site information rather than machine information. A fixed unit such as the Fixed Steam Cleaning Machine PowerDe HW02 is described on its product page as built for continuous production use, so before it is proposed for a wash area, the pack needs to show what continuous use means on that site: the shift pattern, the dwell between vehicles and the position the unit would stand in.
Send one pack, then check the answers against the drawing
A quotation request that can be answered in one round contains the area drawing with heights and slopes, the surface list, the utility and drainage facts, the vehicle cycle, the exclusions, and the acceptance terms, with photographs of the board, the gullies and the tightest access route. When offers come back, read them against the drawing and not against the headline of the offer: check where the unit stands, how far the hose reaches from that standing position, what has to be carried over a threshold, and what the offer says about installation and support. A pack like that removes the guessing on both sides, and the price that arrives matches the site the drawing shows.
