THE ESTIMATING ANSWER
For two existing radiator positions, start with a defined scope and measurement basis. Measure radiator size, heat-output basis, bracket position and valve connection at each location. Keep radiator products, valves and connection fittings separate. Price the listed tasks separately and state the condition that would require a revision: Corroded nearby pipework or unsuitable output selection changes scope.
This guide uses two existing radiator positions as a worked, fictional job. Its matching itemized estimate and PDF let you trace the advice to actual document lines. The role considered here is mechanical contractor. Confirm the site conditions, product selections and your own costs before preparing a client quote.
1. Define the measured job
Replace two selected hydronic 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.
Measurement basis: Measure radiator size, heat-output basis, bracket position and valve connection at each location.
2. Build a product and labor 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 labor inputs for a customer job; the displayed amounts are fictional document inputs.
Selections to confirm: Keep radiator products, valves and connection fittings separate.
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.
Work sequence: Confirm isolation, drain-down and refill plan before removing old units.
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.
If the job changes: Corroded nearby pipework or unsuitable output selection changes scope.
Worked project calculation
The example line for radiator allowance is 2 each × $420.00 = $840.00. This line is one part of the complete 7-item estimate and uses a fictional unit rate.
The paired estimate has 7 separate lines. For this fictional job, multiply each quantity by its unit price and add the line amounts to get $2,790.00. The sample PDF uses these exact values, with tax and markup left at zero so the arithmetic is visible. This total is an illustration, not a regional price or an offer to perform the work.
| Cost line | Quantity | Unit price | Line amount |
|---|---|---|---|
| System and position survey | 1 job | $195.00 | $195.00 |
| Drain-down and protection | 1 job | $250.00 | $250.00 |
| Radiator allowance | 2 each | $420.00 | $840.00 |
| Valve and fitting allowance | 2 sets | $165.00 | $330.00 |
| Radiator fitting labor | 2 each | $390.00 | $780.00 |
| Refill and leak check | 1 job | $245.00 | $245.00 |
| Old unit disposal | 1 job | $150.00 | $150.00 |
| Illustrative subtotal | $2,790.00 | ||
Scope and pricing boundaries
Replace two selected hydronic 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.
Separately identify supplier allowances, labor, subcontracted work and site-specific risk where they apply. Before giving a selling price, decide how your own overhead, profit and any applicable tax will be handled. Do not copy the fictional rates into a real quote without checking your own measurements and supplier or subcontractor figures.
Before you send the estimate
- 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.
Read the complete hydronic radiator replacement PDF example to see how the scope, individual prices and exclusions appear in a client-facing document. If a condition is still unknown, write that boundary into your estimate and revise the affected line once it is resolved.
Questions about this estimate
Which quantity controls this hydronic radiator replacement estimate?
Measure radiator size, heat-output basis, bracket position and valve connection at each location.
When should this hydronic radiator replacement quote be revised?
Corroded nearby pipework or unsuitable output selection changes scope. No boiler replacement, new pipe routes or whole-system balancing.
TURN THIS EXAMPLE INTO YOUR OWN ESTIMATE
Build a hydronic radiator replacement estimate for your project
Use Estimates on iPhone or Android to draft a scope with AI assistance or enter each line yourself. Review quantities, rates, exclusions, and client details before exporting a PDF. The example is free to inspect; some app features may require an in-app purchase.
