---
title: "Central Heating &amp; Radiator Installation Peterborough | Gas Safe"
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Gas Safe registered · 540834 

Peterborough & Cambridgeshire [info@reactionplumbing.com](mailto:info@reactionplumbing.com)[07863 776312](tel:+447863776312)

[![Reaction Plumbing & Heating, Peterborough](/__l5e/assets-v1/1450e1b7-28bd-4539-ae24-49b18a3d5a31/reaction-logo.png)](/)

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Central heating & radiators · Peterborough & Cambridgeshire

# Central Heating & Radiator Work Across Peterborough 

New heating systems, radiator replacements and relocations, power flushing and unvented cylinder work by Gas Safe registered, G3 qualified engineers — so every room in the house actually gets warm, and you stop paying to heat water that never reaches the far end of the circuit.

[Get my free heating quote](#quote)[07863 776312](tel:+447863776312)

76 Checkatrade reviews · Gas Safe registered 540834 · quotes usually back within one working day.

G3 qualified

Unvented hot water cylinders

76 reviews

Verified on Checkatrade

1-year guarantee

On all workmanship

£5m / £10m

Public & employers' liability

Since 2012

Family-run, team of four

What it is

## The system, not just the boiler

Central heating work covers everything between the boiler and the room you are trying to warm: the pipework, the pump, the valves, the controls, the radiators and the water circulating through all of it. A brand-new boiler bolted onto a silted, unbalanced system will still leave you with cold bedrooms and high bills, which is why the system side of the job matters as much as the appliance.

We fit complete new heating systems, replace and relocate radiators, install towel rails, power flush systems that have silted up, add magnetic filters and inhibitor, balance systems so every room heats evenly, upgrade controls, and carry out unvented hot water cylinder work under our G3 qualification.

Every engineer is City & Guilds / NVQ qualified and the business is Gas Safe registered under 540834, with £5m public liability and £10m employers' liability insurance behind the work. We are a family-run team of four working out of Peterborough — the person who quotes your job is on it.

Larger heating jobs are quoted as a fixed price after we have seen the property; smaller works such as a single radiator swap can be handled on an hourly basis. Whichever applies is explained and agreed with you before we start. Quotes are free and usually back within one working day.

### Who this is for

-   Cold rooms and uneven heat
    
    Radiators that never warm properly, upstairs boiling while downstairs stays cold, or one room that has never worked since the extension went on.
    
-   Old systems full of sludge
    
    Black water, cold spots at the bottom of radiators and a pump that keeps failing — the system needs cleaning, not more parts.
    
-   Renovations and extensions
    
    New rooms need new circuits and a system sized for the extra load, not radiators tacked onto an already stretched circuit.
    
-   Hot water upgrades
    
    Unvented cylinder installation and servicing for mains-pressure hot water to several outlets at once — legally G3 work, and we hold it.
    
-   Anyone tired of high gas bills
    
    Correct controls, correct flow temperature and a balanced system change running costs more than most people expect.
    

What happens if it waits

## What a neglected heating system does to your house

Heating systems fail slowly. Nothing dramatic happens on any given day, which is exactly why people live with cold rooms and creeping bills for years before something forces the issue.

### Sludge destroys components

Corrosion debris blocks radiators, jams valves and burns out pumps. It also blocks heat exchangers, which is how a new boiler dies young.

### You pay to heat nothing

An unbalanced system sends most of the flow to the nearest radiators. You run the boiler longer to warm the far rooms and pay for the difference every month.

### Warranties get refused

Most manufacturers require a cleansed, inhibited and filtered system. Fitting a new boiler onto dirty water can invalidate cover of up to 10 years.

### Leaks and damp

Corroded radiators and tired valves weep quietly onto floors. Carpet damage and rotted boards cost far more than the valve that caused it.

### Cylinder faults are safety faults

Unvented cylinders are pressure vessels. A failed expansion vessel or relief valve is not a plumbing inconvenience, it is a safety issue.

### Cold rooms cause damp and mould

Rooms that never reach temperature attract condensation on cold surfaces, and that becomes a mould problem on the walls and around the windows.

### Mistakes we get called out to fix

-   Bleeding the same radiator every few weeks instead of finding out where the air is coming from. 
-   Fitting a new boiler onto an old system with no cleanse, no filter and no inhibitor. 
-   Adding radiators to a circuit without checking whether the pipework and boiler can carry the extra load. 
-   Turning every thermostatic valve to maximum, which removes any balance the system had. 
-   Using leak sealer to hide a leaking radiator or joint rather than replacing the failed part. 
-   Installing or servicing an unvented cylinder without the G3 qualification, which is both illegal and dangerous. 

Our process

## Five steps to a heating system that works evenly

01

### Inspection & heat loss check

We look at the boiler, the pipework, the controls and every radiator, and assess what the rooms actually need rather than replacing like for like by default.

02

### Diagnosis & fixed quote

Sludge, air, circulation or sizing — we identify which it is and quote the work with the scope written down. Free, usually within one working day.

03

### Installation or flush

New radiators, pipework, valves or cylinder fitted, or the system power flushed and cleaned depending on what the job calls for.

04

### Balance, inhibit & test

Magnetic filter fitted, inhibitor dosed, every radiator balanced and the system pressure-tested so heat is distributed the way it should be.

05

### Handover & guarantee

Controls explained and set up, work area cleared, and the workmanship covered by our 1-year guarantee.

What you get

## What proper heating work delivers

### Every room reaches temperature

Balancing and correct sizing mean the far bedroom warms up at the same time as the hallway, without running the boiler for longer.

### Lower running costs

Clean water, a balanced circuit and controls set up correctly reduce the gas needed for the same comfort, month after month.

### Your boiler warranty protected

Cleanse, inhibitor and a magnetic filter keep the system within the conditions manufacturers require for warranties of up to 10 years.

### Mains-pressure hot water done legally

Unvented cylinder installation and servicing under our G3 qualification, with the expansion, relief and discharge arrangements done properly.

### Fewer breakdowns

Most pump, valve and heat exchanger failures trace back to system water. Fix the water and you stop paying for the same repair twice.

### Backed and insured

Gas Safe registered 540834, £5m public liability, £10m employers' liability, and a 1-year workmanship guarantee on everything we do.

Recent work

## Central Heating & Radiators we have completed

![Grooved underfloor heating floor panels laid ready for heating pipework](/__l5e/assets-v1/1e53e40b-8be2-4a06-a967-8d7c5da826ef/central-heating-radiators-during-01.jpg)![Underfloor heating pipe runs set into grooved floor panels across an open-plan room](/__l5e/assets-v1/05ab6b2e-3058-42f7-80e4-d650a41b1d59/central-heating-radiators-during-02.jpg)![Heating engineer laying underfloor heating pipework in a Cambridgeshire property](/__l5e/assets-v1/2f74f8ef-8dbe-4c64-9c98-a93bb3ba0606/central-heating-radiators-during-04.jpg)![New central heating pipework installed between wooden floor joists](/__l5e/assets-v1/c401f11d-bf3b-45b8-9db8-a038023e26d5/central-heating-radiators-during-05.jpg)![Completed heating manifold with red and blue flow and return valves feeding a new system](/__l5e/assets-v1/0c5e33a4-49a8-4d59-afbc-e5c85aeb4846/central-heating-radiators-after-06.webp)![Bank of parallel copper heating pipes and circulation pumps in a finished plant room](/__l5e/assets-v1/a3be9313-edea-4680-94de-6b1cbc4f1c92/central-heating-radiators-after-10.webp)![Row of Grundfos circulating pumps fitted to copper pipework with red isolation valves](/__l5e/assets-v1/9fa00134-9e5d-4cf1-a71c-4162a85cbcf1/central-heating-radiators-after-11.webp)![Commercial heating pipework with pressure gauges and a pressurisation unit after commissioning](/__l5e/assets-v1/33d3b5d4-2cf5-42a4-bb6e-59e6ff2c7da2/central-heating-radiators-after-12.webp)![Vertical copper heating pipes with valves and pumps in a professionally finished install](/__l5e/assets-v1/4d8885fa-90f5-4a91-bbfe-86c3a7bd828e/central-heating-radiators-after-13.webp)![Neatly grouped copper heating pipework with twin Grundfos pumps after installation](/__l5e/assets-v1/d8381717-b812-446d-912c-3ad563477a38/central-heating-radiators-after-14.webp)![Four circulation pumps installed in line with red isolation valves on a heating system](/__l5e/assets-v1/2ed610e4-bd29-4f8e-abe7-f94afcabb164/central-heating-radiators-after-15.webp)![Copper heating pipework being run through loft rafters during a central heating installation](/__l5e/assets-v1/e5c4cb78-b8ca-4e90-8f10-2e197be0a701/central-heating-radiators-during-07.webp)![Underfloor heating pipe being laid into insulated floor panels during installation](/__l5e/assets-v1/5756f809-6537-46f2-8e9c-786444904966/central-heating-radiators-during-08.webp)![Underfloor heating loops fitted between floor joists with insulation before flooring goes down](/__l5e/assets-v1/4d65aa7f-6651-4d08-bb93-76e1d8d628a2/central-heating-radiators-during-09.webp)![Plant room heating pipework and pumps part way through a central heating system upgrade](/__l5e/assets-v1/0c936bc0-11e7-4be5-8cc8-894c16f818d6/central-heating-radiators-during-16.webp)

In detail

## Radiators, flushing, cylinders and controls in detail

Central heating covers several distinct jobs. Here is what each one involves and when it is the right answer for a Peterborough property.

### New central heating systems

A full system installation means sizing the boiler and every radiator to the heat loss of the rooms, running new flow and return pipework, fitting zone valves and controls, and commissioning the whole thing as one system. In an older property that often includes replacing pipework that has been extended and patched over decades.

The commissioning stage decides whether the system performs. Flushing, dosing with inhibitor, fitting a magnetic filter, setting the flow temperature and balancing each radiator are not extras — they are the difference between a system that works and one that merely runs.

### Radiator replacement, relocation and towel rails

Radiators are replaced because they have corroded, because a room has been redecorated, or because the original was never big enough for the space. Sizing matters: a radiator too small for the room will never satisfy the thermostat, and one too large in a small room wastes money.

Relocating a radiator means altering pipework, often through floors, then re-balancing the system afterwards. Towel rails in bathrooms are a common request during a bathroom refit, which we handle as part of the same job because we fit bathrooms too.

Thermostatic radiator valves let you set different temperatures room by room, which is one of the cheapest genuine savings available on an existing system — provided the system is balanced afterwards rather than left with every valve wide open.

### Power flushing and system cleansing

Power flushing uses a pumped unit and chemicals to force debris out of radiators and pipework. It is the right answer where the water is black, radiators are cold at the bottom, the pump has failed more than once, or a new boiler is going onto an old system.

It is not a cure-all. Where radiators are internally corroded beyond recovery, flushing will only reveal the pinholes rather than fix them. We tell you honestly which situation you are in before taking money for a flush that will not solve the problem.

Afterwards we fit a magnetic filter if there is not one and dose the system with inhibitor. Without that, the sludge simply comes back and you pay for the same job again in a few years.

### Unvented hot water cylinders (G3)

Unvented cylinders deliver hot water at mains pressure to several outlets at once, which is why they suit larger houses and homes with more than one bathroom. They are sealed pressure vessels, and installing or servicing one without the G3 qualification is illegal.

The work includes the expansion vessel, the temperature and pressure relief valve, the tundish and the discharge pipework, all sized and routed correctly. Common faults we attend are water discharging from the tundish, hot water running out too quickly, and vessels that have lost their charge.

### Controls, zoning and balancing

Programmable room thermostats, correctly configured flow temperatures and zone valves give you control over when and where you spend money on heat. Most homes we visit are running a flow temperature far higher than the system needs, which stops a condensing boiler from condensing at all.

Balancing is the unglamorous part that makes the biggest difference. Setting the lockshield valves so each radiator gets its share of the flow means the far end of the circuit warms up at the same rate as the near end, and the boiler cycles less.

### Pipework, materials and leaks

We use copper and appropriate approved fittings, keep isolation accessible, and lag pipework where it runs through unheated spaces. Where floors have to come up, we plan the routes so future access does not mean destroying finishes.

Leaks on heating circuits are usually at radiator valve unions, compression joints, auto air vents or corroded radiators. We find and repair the source rather than dosing sealer into the system, which risks blocking the very heat exchanger you are trying to protect.

### Where we work, and what we do not do

We carry out heating work across Peterborough, Yaxley, Hampton, Whittlesey, Huntingdon, Sawtry, Stilton, Stamford, Market Deeping, Ramsey, Oundle and the surrounding Cambridgeshire towns.

Free, no-obligation quote

## Get your heating working properly

Tell us which rooms are cold, what the system is doing and your postcode. Quotes are free, usually back within one working day, and the price is agreed before any work starts.

[07863 776312](tel:+447863776312)

Gas Safe registered 540834 · £5m public liability · 1-year workmanship guarantee

Common questions

## Central heating questions

How much does central heating work cost?

It depends entirely on the job — a single radiator swap and a full system installation are worlds apart. Larger jobs are quoted as a fixed price after a look at the property, smaller works can be hourly, and either way it is agreed with you before we start. Quotes are free and usually back within one working day.

Why are some of my radiators cold?

Cold at the top means air, and bleeding usually fixes it. Cold at the bottom means sludge sitting in the radiator, which needs the system cleaning. Whole radiators that never warm often point at balancing or a failed valve.

Do I need a power flush?

If the system water is black, radiators are cold at the bottom, the pump keeps failing, or you are fitting a new boiler onto an old system, then usually yes. If the radiators are corroded through, a flush will not save them and we will tell you that instead of taking the work.

How long does a radiator replacement take?

A straightforward like-for-like swap is typically a short visit. Relocations, resizing and multiple radiators take longer because pipework has to be altered and the system re-balanced afterwards.

Are you qualified to work on unvented cylinders?

Yes. We hold the G3 qualification legally required for unvented hot water cylinders, alongside Gas Safe registration 540834 and City & Guilds / NVQ qualifications across the team.

Will new radiators make my house cheaper to heat?

Correctly sized radiators on a clean, balanced system with sensible controls will get rooms to temperature faster and let the boiler run at a lower flow temperature, which is where the saving comes from. Swapping radiators alone on a dirty system rarely achieves much.

Can you add radiators for an extension or loft conversion?

Yes, provided the system can carry the additional load. We check the boiler output and pipework before adding to the circuit rather than tacking rooms on and hoping.

How long does a new heating system take to install?

Typically several days depending on the size of the property, how much pipework is being replaced and whether a new boiler or cylinder is part of the job. You get a realistic timescale at the quote stage.

Is heating work guaranteed?

Yes — a 1-year workmanship guarantee on everything we do, with manufacturer warranties on the products we install.

Do you take emergency call-outs for heating failures?

Yes, 24/7 across the Peterborough area. If the heating has failed completely, call 07863 776312 rather than waiting on a form.

Where we work

## Central Heating & Radiators across Peterborough

We cover Peterborough and the surrounding Cambridgeshire towns from our base at 3 Nightingale Drive. See the full [areas we cover](/#areas) or call to check your postcode.

-   [Central Heating & Radiators in Peterborough](/areas/peterborough "Central Heating & Radiators in Peterborough")
-   [Central Heating & Radiators in Yaxley](/areas/yaxley "Central Heating & Radiators in Yaxley")
-   [Central Heating & Radiators in Hampton](/areas/hampton "Central Heating & Radiators in Hampton")
-   [Central Heating & Radiators in Whittlesey](/areas/whittlesey "Central Heating & Radiators in Whittlesey")
-   [Central Heating & Radiators in Huntingdon](/areas/huntingdon "Central Heating & Radiators in Huntingdon")
-   [Central Heating & Radiators in Sawtry](/areas/sawtry "Central Heating & Radiators in Sawtry")
-   [Central Heating & Radiators in Stilton](/areas/stilton "Central Heating & Radiators in Stilton")
-   [Central Heating & Radiators in Stamford](/areas/stamford "Central Heating & Radiators in Stamford")
-   [Central Heating & Radiators in Market Deeping](/areas/market-deeping "Central Heating & Radiators in Market Deeping")
-   [Central Heating & Radiators in Ramsey](/areas/ramsey "Central Heating & Radiators in Ramsey")
-   [Central Heating & Radiators in Oundle](/areas/oundle "Central Heating & Radiators in Oundle")
-   [Central Heating & Radiators in Cambridgeshire](/areas/cambridgeshire "Central Heating & Radiators in Cambridgeshire")

Related services

## Other work we take on

-   [Boiler Installation From £1,600 + VAT ](/services/boiler-installation)
-   [Boiler Repair Quoted on the job · 24/7 call-outs ](/services/boiler-repair)
-   [Bathroom Installation Free quote · whole job in-house ](/services/bathroom-installation)

[Homepage](/)[Contact us](/#quote)

## Warm rooms, evenly, all winter.

Gas Safe registered 540834, G3 qualified for unvented cylinders, 1-year workmanship guarantee.

[Get my free heating quote](#quote)[07863 776312](tel:+447863776312)

![Reaction Plumbing & Heating — Gas Safe registered plumbers and heating engineers in Peterborough](/__l5e/assets-v1/1450e1b7-28bd-4539-ae24-49b18a3d5a31/reaction-logo.png)

A family-run plumbing, heating and gas firm based near Peterborough. Established 2012, owned and run by Matthew McGonagle.

Gas Safe registered · 540834

£5m public liability · £10m employers' liability

## What we do

-   [Bathroom Installation](/services/bathroom-installation)
-   [Boiler Installation](/services/boiler-installation)
-   [Boiler Servicing](/services/boiler-servicing)
-   [Boiler Repair](/services/boiler-repair)
-   [General Plumbing](/services/general-plumbing)
-   [Central Heating & Radiators](/services/central-heating-radiators)
-   [Underfloor Heating](/services/underfloor-heating)
-   [Water Tank & Cylinder Replacement](/services/water-tank-cylinder-replacement)
-   [New Build Plumbing](/services/new-build-plumbing)
-   [Landlord Gas Safety (CP12)](/services/landlord-gas-safety-certificate)
-   [Gas Checks & Capping Old Gas Supplies](/services/gas-checks-capping)

## Areas covered

-   [Peterborough](/areas/peterborough)· 
-   [Hampton](/areas/hampton)· 
-   [Yaxley](/areas/yaxley)· 
-   [Stilton](/areas/stilton)· 
-   [Whittlesey](/areas/whittlesey)· 
-   [Sawtry](/areas/sawtry)· 
-   [Huntingdon](/areas/huntingdon)· 
-   [Ramsey](/areas/ramsey)· 
-   [Stamford](/areas/stamford)· 
-   [Market Deeping](/areas/market-deeping)· 
-   [Oundle](/areas/oundle)· 
-   [Cambridgeshire](/areas/cambridgeshire)

## Get in touch

-   [07863 776312](tel:+447863776312)
-   [info@reactionplumbing.com](mailto:info@reactionplumbing.com)
-   3 Nightingale Drive  
    Peterborough, Cambridgeshire  
    PE7 3HR
    
-   Opening hours 8:00am – 8:00pm, seven days a week (24/7 for genuine emergencies) 
-   [Follow us on Facebook](https://www.facebook.com/reactionplumbingheating)

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© 2026 Reaction Plumbing and Heating LTD. Gas Safe register number 540834.

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