Overview
A new boiler installation is a significant piece of work, but a professional installer will manage the entire process efficiently. Most standard combi-for-combi replacements are completed in a single day. More complex installations — new system types, different locations, or significant pipework modifications — may take two days.
Step 1: The Survey
A reputable engineer will always survey your home before quoting. This involves assessing your existing system, measuring heat loss, checking the flue route, inspecting the gas supply and meter, and identifying any other work needed (such as pipework or cylinder replacement).
Step 2: The Quote
You should receive a written, itemised quote detailing the boiler model, all included work, warranty terms, and payment options.
Step 3: Preparation
On installation day, the engineer will protect your home with dust sheets and begin isolating and draining the existing system. This may take an hour for older systems.
Step 4: Removal of Old Boiler
The old boiler and associated components are disconnected and removed. The area is inspected for any pipework issues that need addressing.
Step 5: System Flush
Before the new boiler is connected, the system is flushed — either manually or via power flushing — to remove debris and sludge. Most manufacturers require evidence of a clean system for warranty validity.
Step 6: Installation of New Boiler
The new boiler is mounted, connected to the gas supply, flue, heating circuit, and water supply. New controls and thermostat are fitted if included.
Step 7: Commissioning
The boiler is fired up and commissioned to manufacturer settings. Combustion is checked with a flue gas analyser. Pressure, flow rates, and controls are tested.
Step 8: Handover
The engineer walks you through the boiler controls, explains the thermostat and programmer, leaves all documentation, and provides Building Regulations notification paperwork.
Halo Heating manages the entire process from survey to handover. Call 01483 676108 to get started.
Need Professional Help?
Our Gas Safe registered engineers cover Surrey and surrounding areas. Call for a free quote or to book an engineer.
Call 01483 676108