Central Heating, Radiators & Underfloor — Installation & Repair
From full central heating installations to radiator replacements, underfloor heating and smart heating controls, our qualified engineers keep homes and businesses warm across Bedfordshire, Hertfordshire, Buckinghamshire and North London.
Our Heating Services
From a single radiator replacement to a complete central heating system installation, we cover every aspect of domestic and commercial heating.
Central Heating
Central Heating Installation
Complete new central heating system installations including boiler, radiators, pipework and controls. Designed and installed by qualified heating engineers.
Central Heating Repairs
Fault finding and repair for all types of central heating systems including combi, system and conventional boilers with vented or unvented cylinders.
Heating System Upgrades
Upgrading old heating systems to modern, energy-efficient setups. System conversions from gravity-fed to fully pumped, Y-plan to S-plan upgrades.
Heating Powerflush
Professional powerflushing to remove sludge, rust and debris from your central heating system, improving efficiency and extending boiler life.
Heating Pipework
New central heating pipework installation, pipe rerouting during renovations, micro-bore to 15mm conversions and heating pipe repairs.
Magnetic Filter Fitting
Installation of magnetic system filters to protect your boiler and heating system from magnetite sludge build-up.
Radiators
Radiator Installation
New radiator fitting including panel radiators, column radiators, designer radiators and towel rails in all sizes and styles.
Radiator Replacement
Swapping old, inefficient radiators for modern, energy-efficient models with higher heat output and better aesthetics.
Radiator Repair
Leaking radiator repair, radiator valve replacement, cold radiator diagnosis, bleeding and balancing to restore even heating throughout your home.
Radiator Moving
Moving radiators to new positions during room reconfigurations, extensions and renovations with pipework alterations.
Towel Rail Installation
Heated towel rail fitting in bathrooms, en-suites and cloakrooms — connected to your central heating system or electric.
Column Radiator Fitting
Traditional column radiator installation for period properties, Victorian and Edwardian homes looking for classic styling.
Underfloor Heating
Underfloor Heating Installation
Full underfloor heating system installation — wet (hydronic) systems connected to your boiler or heat pump for new builds, extensions and renovations.
Underfloor Heating Repair
Fault finding and repair for underfloor heating including manifold problems, actuator replacement, pump faults and flow issues.
Underfloor Heating Design
System design and planning for underfloor heating, including pipe layout calculations, zone planning and manifold positioning.
Heating Controls
Smart Thermostat Installation
Fitting smart thermostats including Hive, Nest, Tado and Honeywell Evohome. Control your heating from your phone and save on energy bills.
Programmer Replacement
Replacing old heating timers and programmers with modern digital or smart controls for better scheduling and efficiency.
Motorised Valve Replacement
Replacing faulty 2-port and 3-port motorised valves, mid-position valves and zone valves that cause heating or hot water problems.
Thermostat Fitting
Room thermostat installation and replacement, wireless thermostat upgrades and thermostat relocation.
Heating Zone Control
Setting up multiple heating zones with separate thermostats and controls so you heat only the rooms you use.
Weather Compensation
Installing weather compensation controls that automatically adjust boiler flow temperature based on outside conditions for better efficiency.
Why Choose National Plumbing for Heating Services
Your heating system is one of the biggest investments in your home. Here's why you can trust us to get it right.
Qualified Engineers
Every heating engineer is fully qualified with years of experience in central heating systems, radiators and underfloor heating.
Punctual & Reliable
We arrive on time and complete heating work efficiently with minimal disruption to your home. Clear communication throughout.
Workmanship Guaranteed
All heating installation and repair work is backed by our workmanship guarantee. We stand behind every job we do.
Local Heating Engineers
Our engineers are based across Bedfordshire, Hertfordshire, Buckinghamshire and North London so help is always nearby.
Heating Services Near You
Our heating engineers cover homes and businesses across four counties.
Bedfordshire
Luton · Bedford · Dunstable · Leighton Buzzard · Biggleswade · Sandy · Flitwick · Ampthill · Houghton Regis · Shefford · Arlesey · Potton
Hertfordshire
Watford · St Albans · Hemel Hempstead · Stevenage · Hitchin · Hatfield · Welwyn Garden City · Harpenden · Borehamwood · Bushey · Rickmansworth
Buckinghamshire
Milton Keynes · Aylesbury · High Wycombe · Amersham · Chesham · Buckingham · Marlow · Beaconsfield · Princes Risborough · Winslow · Newport Pagnell
North London
Barnet · Enfield · Haringey · Camden · Islington · Finchley · Hendon · Mill Hill · Edgware · Wood Green · Tottenham · Highgate · Hampstead · Kentish Town
Heating Services — Frequently Asked Questions
Common questions about our heating services
How much does a new central heating system cost?
The cost of a new central heating system depends on the size of your property, number of radiators, boiler type and the condition of existing pipework. We provide free, no-obligation quotes after assessing your property. Contact us to arrange a survey.
How long does a central heating installation take?
A full central heating installation in an average 3-bedroom house typically takes 3-5 working days. A boiler and radiator swap in an existing system can be done in 1-2 days. We'll give you a clear timeline before we start.
What is a powerflush and do I need one?
A powerflush cleanses your central heating system by circulating water and cleaning chemicals at high velocity to remove sludge, rust and debris. Signs you may need one include cold spots on radiators, noisy boiler, frequent air in radiators, slow heating and discoloured water when bleeding radiators.
Can you install underfloor heating in an existing home?
Yes. Low-profile underfloor heating systems can be retrofitted in existing homes during renovations. For ground floors, systems can be laid on top of existing subfloors with minimal height build-up. We'll advise on the best system for your property.
What is the benefit of a smart thermostat?
Smart thermostats let you control your heating remotely via your phone, learn your schedule, and can use geofencing to turn heating on when you're heading home and off when you leave. They can reduce energy bills by avoiding heating an empty home and optimising boiler efficiency.
How often should radiators be bled?
You should bleed your radiators when you notice cold spots at the top, or at the start of each heating season as a preventative measure. If radiators need frequent bleeding, there may be air entering the system — we can diagnose and fix the underlying cause.
Book a Heating Engineer
Tell us about your heating requirements and we'll get back to you with a quote.
Prefer to call? 0330 043 3748