Know what happens next, at every stage

The online Home Energy Assessment: four short stages, a few minutes, no photographs needed at this stage and nothing to measure. You get an initial view of whether your property looks suitable straight away.

Your answers are worked out in your own browser. Nothing is sent to Airwarm unless you choose to submit it with the short form at the end, which means you decide what to share and when. Completing the assessment does not book anything.

Your decision: whether to submit your assessment for a Desktop Engineering Review. Start your Airwarm assessment.

A person at Airwarm reviews the property information you submitted and the evidence available. If something needs clarifying, or looks like a genuine obstacle, we would rather find it now than three visits later.

Common things we look for at this point: a property type where siting the outdoor unit is likely to be the deciding question, a combination boiler with no obvious cylinder position, a listed or leasehold property where permission comes before design, and an address at the edge of the area we can properly cover.

You get the review in writing: what we found, what we assumed, what would need to change and whether a heat-loss survey is worth anyone’s time. If it is not, we say so and explain why. Sometimes the sensible order is insulation or emitter work first and a heat pump afterwards, and that is a useful answer even though it is not the quick one.

Your decision: whether to book a survey, in your own time.

A room-by-room heat-loss calculation, what each room’s radiators or other emitters need to do, the flow temperature the system can run at, where the outdoor unit can go, and checks on the existing system: pipe routes, cylinder options, condensate, electrical supply and access. This is the measured engineering visit, and it only happens where the review shows it is worthwhile.

Digital measuring tools, voice notes and photographs are used as evidence aids, alongside a structured manual verification process rather than instead of it. Where practical, the people who would install the system take part in or review the survey.

Your decision: none on the day. You are not asked to sign anything at the kitchen table. What the survey covers.

Airwarm develops the detailed system design and the final project specification: heat loss, emitter sizing, flow temperature, hydraulics, hot water, controls and siting, designed and reviewed before anything is issued. You get the assumptions as well as the answers, in writing.

The proposal sets out the property summary, what you said you wanted, the design assumptions, the recommended equipment and its output, the emitter schedule, the cylinder, the controls, the electrical scope, what is excluded, the expected programme, warranty, aftercare and the payment schedule, with a fixed quote for the work it describes.

Flexible ways to pay. Depending on your project, payment options may be available through our Ample partnership. Available options can be presented alongside your final quotation.

Your decision: whether to proceed, ask for a variation, or stop. All three are reasonable.

Where your project proceeds through our Ample partnership, Ample manages the relevant MCS and compliance route, the Boiler Upgrade Scheme process where the installation is eligible, and the required DNO application or notification process. Eligible air-source heat pump installations can receive £7,500 through the Boiler Upgrade Scheme, subject to the current scheme rules and your individual property and project. You do not need to manage these processes yourself.

At the same time the job is planned: design confirmed, equipment ordered and checked in, any subcontracted work arranged, and access, parking, protection, pipe routes, welfare and your expectations agreed before anyone arrives. Airwarm installations begin in April 2027; surveys, design and this setup work can all happen beforehand, so a suitable project can be planned and booked for the launch period.

Your decision: the installation dates, and anything you want handled differently in your home.

Airwarm delivers the installation that was designed. On site: floors and furniture protected, tidy storage, dust and noise controlled, concealed pipework photographed before it is covered, components labelled, changes recorded with the reason, a daily update, and the property left safe each evening.

Your decision: nothing new, but you hear about any change on the day it happens. Our installation standard.

Flushing, filling, pressure testing, electrical confirmation, control setup, weather compensation, balancing, hot-water checks and a noise check — then documentation and a proper handover. A system is not finished simply because it is producing heat.

The system is then documented and progressed through the applicable certification route. For installations delivered through our Ample partnership, that is the MCS route Ample provides. More on that.

Handover is a conversation, not a folder. What the settings do, what normal behaviour looks like through the seasons, what to check before calling anyone, and what not to fiddle with. The single most useful thing to understand is weather compensation, because it is what lets the system run at the lowest useful temperature.

Your decision: whether you genuinely understand the system. If not, we go round again.

Airwarm remains your technical contact after installation: follow-up within 48 hours of handover, a comfort review once you have lived with it, seasonal optimisation where it is needed and an annual service reminder, so the system is looked after every year.

The two-week review is the useful one. It is when the controls are refined against how you actually live with the system rather than how the design assumed you would.

Your decision: whether to keep the servicing with us. We would like you to, and we will not make it awkward if you would rather not.