Heating breakdown: the fault report form for winter

How wide the range of systems is that a plumbing and heating firm has to expect in winter is shown by the annual survey of the chimney sweep trade. For 2025 it counts 4.7 million oil boilers and 14.8 million gas-fired systems (German chimney sweep association). Almost 60 percent (German chimney sweep association) of installed gas heating systems had condensing technology. Among the conventional systems without condensing technology, age is high: over 86 percent of oil heating systems and about 66 percent of gas heating systems in this group were older than 20 years in 2025 (German chimney sweep association).

The association puts this into context itself: these systems meet the safety standards but are considered technically outdated. Age therefore says nothing about how often a system breaks down, and the website should not use it to frighten anyone. For the form, something else matters. Behind the sentence “The heating isn’t working” there may be an old oil boiler without a display, a gas boiler with a fault code on its display or a heat pump in a new building.

New construction shifts the picture further. Of the residential buildings completed in 2025, 73.6 percent (Destatis) mainly heat with heat pumps. In the existing stock, gas dominates: 56 percent of dwellings are heated with gas and 19 percent with oil (Destatis, 2022 census), and in Lower Saxony the gas share reaches 72 percent (Destatis, 2022 census). A firm around Hanover or Hildesheim therefore usually serves all three worlds at once, and each has its own fault codes, its own displays and its own rating plates.

This variety is the reason why a general contact form is poorly suited to faults. A field labeled “Your message” invites people to write down the sentence from the phone once again. What is changing in heating law and in the installed base, and which pages a plumbing and heating website should therefore adapt, is covered in the article on the new heating law.

The first step sorts how urgent the case is, using two large tiles instead of a text field: heating or hot water, with the option to choose both. A second question follows with two answers: completely off or only partly. “Partly” covers the cases in which individual radiators stay cold, only one floor gets warm or the water only comes lukewarm. Anyone who selects “heating completely off” sees a note about the emergency service directly below, in case the house is already cooling down noticeably.

The tiles are operated with a thumb on a phone, often in the basement and with cold hands. The accessibility guidelines for web content require tap targets of at least 24 by 24 CSS pixels (WCAG 2.2); a tile for this step may well be a multiple of that. Each tile carries text and a symbol so that the selection does not depend on color alone, and the selected tile shows its state clearly.

In the same step the form clarifies who is reporting. For owners this is simple. In rented apartments the tenant has to notify the landlord of a defect without undue delay (Section 536c BGB), and the party placing the order and receiving the invoice is often the property manager. A choice of “owner, tenant or property manager” with a field for the management company saves the later question of who pays. How property managers are addressed as clients is covered in the article Property managers as clients.

The third step asks how and when the firm can reach the customer. The callback number is a field of type tel with autocomplete="tel" so that the phone suggests its own number; the guidelines require that the purpose of such fields can be determined programmatically (WCAG 2.2). Time windows follow as a choice, such as morning, midday or afternoon, plus an option for “any time”. People who work during the day can thus indicate that a call only makes sense in the late afternoon instead of missing several calls.

For the visit itself, this step asks about access: is someone at home, does a neighbor have a key, is there a note on how to reach the boiler room? A free field for anything special is enough. The form does not ask for health information. Anyone who thinks the matter is particularly urgent writes that in their own words, and the firm decides during the callback.

At the end comes a summary of all details before sending, with the option to go back a step without losing entries. After sending, the page confirms receipt and sends the same summary by email. For that email not to land in spam, sending needs a clean sender configuration, as described in the article Why trade inquiry emails end up in spam.

Some faults resolve themselves before anyone sets off. That is why four short checks that any customer can do without tools sit above the form, not below it. They do not replace troubleshooting and do not ask anyone to open the unit. The steps for water damage, main stopcock and fuse, are already on the emergency service page, as described in the article Presenting the emergency service online. This is about what additionally matters for heating.

Each check gets a counterpart in the form, such as “Emergency switch checked: yes or no”. That way the firm knows what has already been tried. If there is a smell of gas, none of these tips apply, and the notice above the form stands. The firm agrees the wording of the tips with its technicians, because they know their customers’ systems and know what a layperson can safely do.

A form is only as good as the message that arrives at the firm. Digital channels are already part of everyday work at many firms: 62 percent (Bitkom 2025) use messenger services for internal or external communication, and 48 percent (Bitkom 2025) offer online appointment booking. So the channel is there. A fault report by messenger, however, arrives as loose text with a photo out of context, and the decisive details are often missing.

The email from the fault report form, by contrast, has a fixed structure. The subject line contains the type of fault, the location and the time window, for example “Fault: heating completely off, Sarstedt, callback in the morning”. At the top of the body are the answers from the first step, below them the fault code, pressure and the checks performed, then contact and access, and at the very bottom the photos as attachments. This way the office can sort without opening every report, and the technician reads on the phone within seconds what to expect.

Firms that use order management software able to import emails set up the fields so that they can be mapped. Firms working with a shared mailbox set up a rule that sorts fault reports into a folder of their own. In both cases every report gets a reply, even if it only says that the appointment is on the next working day.

A three-step fault report form with photo upload, summary, confirmation page and structured email is a manageable building block. On a new website it can be planned in from the start; what else a website for plumbing and heating firms needs is covered in the section Web design for plumbing and heating. With us, a new website costs from 1,490 euros net at a fixed price. On an existing website, the form comes with a relaunch from 2,900 euros net or as a separate job by arrangement.

After that, the form has to arrive. Website maintenance from 49 euros per month net, cancelable monthly and with no minimum term, includes a monthly test submission of the form to the firm’s address, and small changes such as a new status notice or changed time windows are included up to half an hour per month. All prices are net, prices as of September 2026; the overview is on the pricing page.