# How to price radiator replacement work

Plan a UK radiator replacement estimate with measured scope, product choices and exclusions. Review 7 fictional GBP lines and the matching £2,232.00 PDF example.

Canonical: https://quicklyestimates.com/en-gb/guides/how-to-estimate-radiator-replacement/
Author: Estimates editorial team
Published: 2026-09-25
Updated: 2026-09-25

Estimate radiator replacement by measuring the defined two existing radiator positions, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Cambridge example uses 7 itemised lines totalling £2,232.00; its exact quantities and rates appear in the paired app PDF.

THE ESTIMATING ANSWER

Estimate radiator replacement by measuring the defined two existing radiator positions, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Cambridge example uses 7 itemised lines totalling £2,232.00; its exact quantities and rates appear in the paired app PDF.

The worked job is two existing radiator positions in Cambridge . The written scope is: Replace two selected wet central heating radiators at existing accessible positions, reconnecting suitable pipework and testing the system. Its matching itemised example (https://quicklyestimates.com/en-gb/samples/radiator-replacement-estimate/) shows how that description becomes quantities, allowances and a PDF. These figures are fictional inputs for learning the method, so check the real site, specification and supplier or subcontractor costs before quoting.

1. Define the measured job

Replace two selected wet central heating radiators at existing accessible positions, reconnecting suitable pipework and testing the system. Measure radiator size, heat-output basis, bracket position and valve connection at each location. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote.

Measure for this job: Measure radiator size, heat-output basis, bracket position and valve connection at each location. Record the measured basis next to the relevant cost lines, since a room count, fitted length and purchased product quantity may each use a different unit.

2. Build a product and labour schedule

Keep radiator products, valves and connection fittings separate. This example has 7 distinct lines, including system and position survey, drain-down and protection, radiator allowance. Use actual supplier prices and labour inputs for a customer job; the displayed amounts are fictional document inputs.

Choose before pricing: Keep radiator products, valves and connection fittings separate. Keep a named allowance when the selection is open, and replace it once the actual product and delivery terms are known.

3. Sequence the work and handoffs

Confirm isolation, drain-down and refill plan before removing old units. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote.

Plan the handoffs: Confirm isolation, drain-down and refill plan before removing old units. State which stage needs access or inspection before the next can begin, especially if a concealed condition might stop the work.

4. Set a change boundary

Corroded nearby pipework or unsuitable output selection changes scope. The example excludes boiler replacement, new pipe routes or whole-system balancing. Record the discovery, agree the revised work and update the estimate before adding it to the job.

Change trigger: Corroded nearby pipework or unsuitable output selection changes scope. If this happens, write down the revised quantity and responsibility before adding an item to the customer estimate.

Worked project calculation

The paired PDF has 7 cost lines. For example, Radiator allowance is 2 each × £336.00 = £672.00; Valve and fitting allowance is 2 sets × £132.00 = £264.00. Each amount is the stated quantity multiplied by its unit rate. Recheck whether a line describes installed work, a material purchase allowance or a distinct visit before changing its quantity.

Radiator replacement example — GBP, fictional inputs Work item | Quantity | Unit rate | Amount |

System and position survey | 1 lump sum | £156.00 | £156.00 |

Drain-down and protection | 1 lump sum | £200.00 | £200.00 |

Radiator allowance | 2 each | £336.00 | £672.00 |

Valve and fitting allowance | 2 sets | £132.00 | £264.00 |

Radiator fitting labour | 2 each | £312.00 | £624.00 |

Refill and leak check | 1 lump sum | £196.00 | £196.00 |

Old unit disposal | 1 lump sum | £120.00 | £120.00 |

Illustrative total | £2,232.00 |

Adding the 7 exact line amounts gives £2,232.00 . The PDF uses a 0% tax input and no markup solely to display this arithmetic. Decide the appropriate tax, overhead and profit treatment for an actual job; the fictional rates are not local averages or price recommendations.

Scope and price boundaries

Replace two selected wet central heating radiators at existing accessible positions, reconnecting suitable pipework and testing the system.

Outside this example: No boiler replacement, new pipe routes or whole-system balancing.

The role in this brief is mechanical contractor. Confirm who supplies the selected products, makes the site safe, removes waste and signs off the work. Where opening up reveals a different condition, document it and issue a revised scope and price rather than silently extending the base estimate. Also check access, drying or curing time, and the client handoff described in the work sequence.

Before you send

- Measure radiator size, heat-output basis, bracket position and valve connection at each location.
- Keep radiator products, valves and connection fittings separate.
- Confirm isolation, drain-down and refill plan before removing old units.
- Corroded nearby pipework or unsuitable output selection changes scope.

Compare the written scope with every line in the radiator replacement PDF example (https://quicklyestimates.com/en-gb/samples/radiator-replacement-estimate/). The preview below is the first page of the actual app export; open the PDF to inspect its full scope, notes and amounts.

(https://quicklyestimates.com/assets/guides/radiator-replacement/en-GB/estimate.pdf)
Questions about this job

Which quantity controls this radiator replacement estimate?

Measure radiator size, heat-output basis, bracket position and valve connection at each location.

When should this radiator replacement quote be revised?

Corroded nearby pipework or unsuitable output selection changes scope. No boiler replacement, new pipe routes or whole-system balancing.

FROM SITE NOTES TO AN ITEMISED PDF

Build your own radiator replacement estimate

Enter the project boundary and your measured lines in Estimates on iPhone or Android. Edit the fictional quantities and rates, add the actual business and client details, then inspect the PDF before sharing it.

Create an estimate ↗ (https://quicklyestimates.com/en-gb/download/)Open the worked example → (https://quicklyestimates.com/en-gb/samples/radiator-replacement-estimate/)

Get the app: https://quicklyestimates.com/en-gb/download/
App Store (iPhone): https://apps.apple.com/app/id6740389403
Google Play (Android): https://play.google.com/store/apps/details?id=com.uzel.contractorplus