Across Richmond and TW9, more homeowners are now replacing boilers before complete breakdowns happen. Rising heating costs, ageing systems and repeated repair bills are making older boilers harder and more expensive to keep running. Many homes across South West London still rely on outdated heating systems that struggle during winter, lose pressure regularly or fail without warning. Kew Gas Boiler Repairs & Installations works with homeowners, landlords and local properties across Richmond to install safer, more efficient boilers built for modern heating demand.

Why More Richmond Homeowners Are Replacing Boilers in 2026

Richmond homes often have older heating systems.

This is common in:

• Victorian terraces
• converted flats
• riverside apartments
• older family homes
• rental properties

Many boilers are now over 10–15 years old.

Older boilers often use more gas.
They can also lose pressure, leak or break down during winter.

For landlords, this can quickly lead to tenant complaints and urgent repair costs.

Many homeowners are now comparing two options:

• keep paying for repeated repairs
• replace the boiler with a newer, more efficient model

The Real Cost of Boiler Installation in Richmond

Boiler installation cost depends on the property and the work needed.

Main cost factors include:

• boiler type
• property size
• pipework condition
• flue position
• water pressure
• access to the boiler
• whether the boiler is moved

A simple replacement is usually cheaper.

Costs rise when pipework, controls, flues or system cleaning are needed.

Boiler Installation Process

1. Property Survey

A Gas Safe engineer checks the heating system first.

This includes:

• water pressure
• radiator size
• pipework
• flue route
• boiler location
• heating demand

This helps choose the right boiler for the home.

2. Old Boiler Removal

The engineer safely isolates the gas, water and electrics.

The old boiler is then removed.

In older Richmond homes, this stage may reveal:

• leaking valves
• corroded pipework
• poor past installation work
• sludge inside the system

3. Pipework and System Upgrades

Some homes need extra work before the new boiler is fitted.

This may include:

• larger gas pipes
• magnetic filter
• condensate pipe changes
• smart thermostat
• power flush

Skipping this can reduce boiler performance and lifespan.

4. New Boiler Installation

The new boiler is fitted and connected.

Modern boilers also need:

• safe flue setup
• condensate drainage
• pressure testing
• combustion checks

Only a Gas Safe registered engineer should install a gas boiler.

5. Safety Checks and Handover

After installation, the engineer tests the system.

They also complete the required paperwork.

This matters for:

• warranty
• home insurance
• future property sale
• landlord records

Common Problems Found During Boiler Replacement

Engineers often find hidden problems in older homes.

Common issues include:

• undersized gas pipework
• unsafe flues
• poor boiler position
• sludge in the system
• faulty expansion vessel
• blocked heat exchanger
• frozen condensate risk

If ignored, these problems can cause:

• higher gas bills
• repeated breakdowns
• boiler lockouts
• water leaks
• shorter boiler lifespan

Repair or Replace?

Repair may be enough if the boiler is fairly new and the fault is minor. But replacement often makes more sense when the boiler is over 10–15 years old, repairs keep returning, parts are difficult to source or pressure keeps dropping.

Modern condensing boilers are more efficient than older boilers because they reuse more heat that would otherwise escape through the flue. Heating and hot water also account for over half of a typical home’s annual energy bills, so an inefficient boiler can affect running costs.

A new boiler can also reduce repeated repair visits and improve winter reliability. For safety, any gas boiler replacement must be handled by a business and engineer on the Gas Safe Register.

 Phone: 0207 205 4433
Email: info@kewgasparsonsgreen.co.uk
Address: Munster Rd, London SW6 4EX, United Kingdom

FAQ

How much does boiler installation cost in Richmond?

A standard combi boiler replacement usually costs around £2,000–£3,500. Complex work can cost more.

How long does installation take?

Most simple boiler swaps take one day. Larger jobs may take 2–3 days.

Do I need a Gas Safe engineer?

Yes. A gas boiler must be installed by a Gas Safe registered engineer.

Should I repair or replace my boiler?

Replace it if it is over 10–15 years old, keeps breaking down or costs too much to repair.

Can a new boiler reduce energy bills?

Yes. A modern A-rated boiler can use less gas than an older, inefficient system.

What increases boiler installation cost?

Extra cost can come from pipework upgrades, boiler relocation, power flushing or difficult access.

What boiler is best for a Richmond flat?

A combi boiler is often suitable because it saves space and gives hot water without a tank.

Do I need a power flush?

Only if the system has sludge or dirty water. The engineer will check this during the survey.