Thermal values in a window quote: Which claim can you support?

A prospective customer sends your window business a photograph marked “Ug” and asks whether your quoted windows insulate just as well. Your sales reply determines what the customer compares. They need a clear explanation linked to the product you actually offer. An impressive number is of little use when it describes a different property from the one being discussed.

Your team faces a specific decision about what it can confirm. Which statement is supported by the documents for the quoted window configuration, and what information must the supplier still provide? This article works through that decision in an invented example. It offers no design calculation. It gives your office a way to prepare a technical question so that the customer receives an answer they can use when considering your offer.

Identify the value behind the customer’s question

Ask the customer to show the full passage in the photograph. A number alone may omit both its label and its context. Establish whether the information concerns the glass, the complete window or a general advertising claim. You do not need to judge a competing quote or speculate about its quality. Start by finding out what the visible statement actually describes.

The German consumer advice centre explains the distinction between Ug and Uw. Ug concerns glazing; Uw concerns the complete window. Tell the customer which one appears in your document. Describe a documented glazing value as a glazing value. If the question concerns the whole quoted window, your team needs the corresponding whole-window information. Changing the label does not answer that question.

Then establish what the customer wants to decide. They may simply want to understand the notation, in which case a supported explanation may be enough. They may want to assess a particular quoted window by its thermal performance. That requires evidence linked to that product. A question about terminology need not trigger a new quote, while a request to confirm performance deserves more than a general definition.

Put the quoted configuration beside its documentation

Open the relevant item in your own quote. Use the product names and window identifiers already recorded there. Place the available supplier information alongside it and check whether both documents describe the same configuration. A familiar range name does not settle this if the documents show different glazing or divisions. Your office gathers the information; the responsible technical person assesses whether the match is valid.

The manufacturer Deceuninck explains the components and dimensions involved in Uw. This gives your team a practical supplier question: Which construction and reference size does the stated figure describe? Retain that scope when using the figure. Copying a value for a reference window into another document does not establish that it applies to every window item you have quoted.

Record the exact location of the evidence, including the file name, version and relevant page. The technical colleague can then open the original passage instead of reconstructing it from your summary. If part of the document is missing, obtain the complete version through your normal supplier contact. A cropped screenshot can start a useful question, but it is a poor sole basis for confirming the answer.

Decide what sales can say now

Where the documents clearly support the requested property for the quoted configuration and the responsible person confirms the link, sales can explain that specific statement. Show the customer the label and what it refers to. You do not need a lengthy technical presentation. A short explanation next to the quoted item is more useful than an assortment of figures whose relevance remains unclear.

If only the glazing is documented, explain that supported value and keep the whole-window question open. A possible wording is: “This figure describes the glass. I will have the corresponding information confirmed for the complete window we quoted.” This is a suggested conversation, to be used only if your business actually takes on that follow-up. Saying that the two are practically the same leaves the customer without a sound basis for the comparison.

Where documents conflict, pause confirmation of the affected claim. Note which statements disagree and who will resolve the question. You can still explain other properties that are already supported. The conversation remains useful while the particular uncertainty is investigated. Your team need not stop all advice, and it need not present an unverified figure as provisionally correct.

Ask the supplier a question they can answer

Send the precise product item and the location of the information you hold. Describe the statement your customer needs about the quoted window. Ask how the figure relates to the intended configuration and which document supports that link. A general request for technical data may produce another general brochure, even though the missing piece is a specific connection to your quote.

Keep this request separate from a possible product change. At this stage you want to establish what can be supported for the configuration already offered. A separate selection decision arises if the customer requests different performance or technical assessment recommends another configuration. Asking for missing evidence should not quietly turn into changing the product that the customer is considering.

Assign someone to read and assess the supplier’s reply for sales. Receiving a file does not by itself answer the customer’s question. The person responsible should determine whether the link is now clear or whether a particular detail is still missing. If no reply has arrived, tell the customer the actual status. Do not promise a supplier response at a time that nobody has confirmed to you.

Follow an invented case from photograph to answer

Imagine a window retailer that has already quoted a particular configuration for a house. The owner sends a photograph of a glazing label and asks about comparable thermal performance. The employee recognises Ug. In the business’s own folder, they find a product sheet for the offered range but cannot yet link its value to the specific quoted item. They therefore do not confirm equivalence.

The employee explains that the photograph concerns the glazing and opens the business’s quoted item with the owner. The customer wants to understand the performance of the complete window being offered. The employee records that question and passes it, together with the product sheet, to the technical colleague. That colleague asks the supplier for the information corresponding to the intended configuration and for its documented scope. The customer’s requested product remains unchanged.

For the next part of this hypothetical example, assume that the supplier provides the appropriate document and the technical colleague confirms the link. Sales can now explain the supported figure and its scope. They do not promise a particular saving on heating bills or claim the same performance as a competing window for which they have only a photograph of the glass label. The result is an answered question about their own offered configuration.

If the supplier merely sends the same general range brochure again, the link remains unresolved. The employee identifies the missing connection to the quoted item and asks specifically for it. Both outcomes are possible within the example. An email in the inbox does not complete the assessment. What matters is whether its contents support the answer your business wants to give the customer.

Keep heat loss and solar protection distinct

A thermal question may be followed by another concern: “Will this keep the room cool in summer?” Record that as a further question. The German flat glass association explains g-value as total solar energy transmittance. The question about incoming solar energy therefore needs its own explanation, based on the actual offered properties and the advice appropriate to that concern.

Ask which problem the customer wants to solve in that room. Pass the concern to the responsible person with the relevant window identifier. Do not promise a particular indoor temperature from a documented thermal transmittance value. There is also no need to sell different glazing immediately. The technical person first assesses which information and advice the newly raised issue needs. Sales records the concern instead of inventing a solution during the conversation.

The two answers should remain distinguishable. You may already have explained the supported thermal figure while a question about summer solar protection remains open. Record that actual position. Otherwise, a colleague may see the entire case as complete while the customer is waiting for a second answer. This separation supports the next conversation; it is no general recommendation for a particular glass specification.

Recheck the claim when the configuration changes

If the customer later selects another configuration, your team reassesses the scope of the information previously explained. Identify what has actually changed and pass the affected item to the technical colleague. Retain the old evidence as documentation of the old version. Technical assessment should establish whether it also applies to the new configuration. A familiar product name does not replace that assessment.

Then explain the newly confirmed statement or the further question required to establish it. Do not merely replace a number in an internal note without explanation. The customer should understand its connection with the quote. If the change produces no different confirmed thermal figure, explain that from the documents available. There is no need to invent an improvement to demonstrate that your team has dealt with a requested change.

Leave a useful confirmation note for a colleague

For our hypothetical case, an internal note might read: “Customer photograph shows Ug for the glazing. Customer asks about Uw for our quoted window item. Supplier document received for intended configuration; technical colleague confirms the link. Sales explains the supported figure within that scope. Summer solar protection remains a separate open question.” Add the actual file references and status from your business. This is a suggestion for your existing records.

Make clear which statement can be used and which answer is still missing. A colleague covering the case can then continue at the correct point. They should neither interpret “data received” as confirmation of every performance claim nor send an already answered question back to the supplier. This does not require new software. A properly linked document and an identifiable next task provide a workable starting point.

Check the customer-facing sentence against its evidence

Read the prepared answer alongside the original question. Does it identify the same window as the quote? Is it clear whether you are explaining the glazing or the complete window? Retain the unit used in the confirmed document. Shorter wording should not change the technical meaning. When your team copies a figure, the responsible person checks the full statement and its scope against the original.

Also read the sentence after the number. A confirmed product property can easily become a broader claim such as “This means your house meets every requirement.” Establishing which product the figure describes does not support that wider answer. Stay with the question actually assessed. If the customer also wants advice about funding or the entire building, give that issue its own responsible assessment route. This article supplies no thresholds or approval for it.

When a question remains, show the relevant passage in the complete document. Explain what it supports and which question it answers. The customer should not have to perform the technical assessment themselves. If your answer still misses their concern, record the remaining gap precisely. The technical colleague can then continue without reopening the entire case. A document in a folder becomes useful advice when the explanation addresses the customer’s actual question.

Develop technical conversations from new enquiries

When you purchase new window enquiries, your business retains this advisory work. The German-language webRichtung window offer describes contacts with people looking for new windows. Dimensions, material, quantity and installation scope are clarified personally. An enquiry starts a professional conversation; it does not supply a promised thermal product design. Base your first discussion on the information actually delivered.

Agree within your team who can explain basic questions using the existing product sheet and who assesses specific technical links. The customer gets an identifiable contact without every employee having to confirm every property. If the same document is repeatedly missing, discuss its availability with your supplier. That is an observation from your own work, not evidence of a general sales conversion rate.

Review new window contacts for your sales team

You can review the German-language offer and create your access. That German page describes area selection, standard or exclusive delivery and a monthly limit. You see the current price before ordering. The limit does not guarantee a delivery volume. After industry approval, matching enquiries can be delivered when the order is eligible and sufficient credit is available.

Your team handles the subsequent advice and its own quote. A clear approach to product questions helps you explain exactly what your business offers and what supports its statements. Review that actual German-language purchasing route and assign someone to handle the resulting conversations.