What a Proper Boiler Installation Looks Like (Step-by-Step)

Avoid the cowboys — know what good work actually looks like

Thinking about replacing your boiler? Smart move. But not all installations are equal. Here’s how a proper boiler installation should go — the Sable Projects way.

Step 1: Pre-Installation Survey

We start by inspecting your current setup, assessing water pressure, pipework, and space layout. This ensures you get the right system, not just the most expensive one.

We’ll advise you on:

• Combi vs system boiler options

• Thermostat placement

• Potential for zone heating and energy savings

• Choosing the right boiler - https://sableprojects.co.uk/post/choose-right-boiler-hertfordshire

Step 2: Transparent Quoting

No vague pricing or upselling. You get a clear, itemised proposal that includes:

• Boiler model and efficiency rating

• Labour and parts breakdown

• Estimated installation timeline

• Optional extras like smart thermostats or filters

Step 3: Safe Removal of Old Unit

We remove your existing boiler with care and in full compliance with UK regulations. No mess. No damage. We dispose of everything legally and responsibly.

Step 4: Expert Installation

Our engineers are Gas Safe registered and experienced in all boiler types. We:

• Fit and seal new pipework precisely

• Connect the flue safely and correctly

• Test for gas leaks and pressure balance throughout

We do it clean, we do it right, and we do it once.

Step 5: Commissioning and System Testing

We don’t just turn it on and leave. We fully commission your system to ensure peak performance:

• Flush and balance radiators

• Calibrate thermostat and controls

• Fit a magnetic filter to protect your boiler from future damage

Step 6: Walkthrough and Documentation

We’ll walk you through your new system, answer all questions, and hand over:

• Installation certificate

• Warranty and boiler manuals

• Maintenance and servicing tips

No jargon. No confusion. Just straight answers and peace of mind.

Key Takeaways

• A professional boiler installation involves more than just swapping parts

• Every step matters — from survey to aftercare

• At Sable Projects, we guarantee a clean, compliant, and complete install every time

FAQs

Q: How do I know my installer is Gas Safe registered?
A: Ask to see their Gas Safe ID card, or check their number at gassaferegister.co.uk.

Q: Do I need a new thermostat when I upgrade my boiler?
A: Not always — but modern systems perform best with smart controls. We’ll advise during your survey.

Q: Will I lose heating and hot water during the install?
A: Yes, but only temporarily. We’ll minimise downtime and keep you updated throughout.

Ready for a better boiler experience?

Book your free boiler consultation with Sable Projects today — and get it done right the first time.