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Radiator Installation & Repair Services in St Albans

Say goodbye to pesky radiator problems. Limitless Boilers offers radiators repairs and installation at affordable rates, and we are always available for emergency intervention.

gray concrete wall inside building
gray concrete wall inside building

Our Radiator Services

  • Radiator Supply & Installation
    Choose from a wide selection of modern, traditional, and designer radiators, professionally fitted by our Gas Safe engineers.

  • Radiator Repairs & Replacements
    From leaking valves to cold spots and damaged units, we diagnose and fix all radiator issues quickly and efficiently.

  • Designer & Column Radiators
    Add a stylish touch to your home with our range of high-quality column and designer radiators, available in various finishes and sizes.

  • Thermostatic Radiator Valve (TRV) Installation
    Upgrade your radiators with TRVs to improve energy efficiency and individual room temperature control.

  • Radiator Relocation
    Need to move a radiator for a renovation or room redesign? We’ll handle the safe and tidy repositioning of your heating units.

  • Radiator Balancing & Bleeding
    Uneven heating? We’ll balance and bleed your system to ensure all radiators heat evenly and efficiently.

  • Power Flushing
    Improve the performance and longevity of your entire heating system by removing sludge and debris. Learn more about our Power Flushing service .

Common Radiator Problems We Fix

Our engineers are experienced in diagnosing and resolving all types of radiator issues. Here are some of the most common problems we help homeowners fix across St Albans and surroundings.

a man riding a skateboard down the side of a ramp
a man riding a skateboard down the side of a ramp
  • Cold Spots
    Radiators that are warm at the top but cold at the bottom usually indicate a buildup of sludge or debris in the system.

  • Leaking Valves
    Dripping or faulty valves can lead to pressure loss and water damage — we repair or replace them quickly and safely.

  • Radiators Not Heating Evenly
    Uneven heating across your system may point to air locks, blockages, or balancing issues.

  • Noisy Pipes
    Banging or gurgling sounds often signal trapped air, scale buildup, or loose pipework that needs attention.

  • Air Trapped in the System
    Air pockets can prevent radiators from heating properly — we’ll bleed and balance your system to restore performance.

  • Rust or Corrosion
    Visible rust or discoloured water may mean internal corrosion, which can lead to leaks or inefficiency if not treated.

Areas We Cover

We proudly provide radiator installation, repairs, and heating services across St Albans and surrounding areas. Whether you're upgrading your radiators, replacing a faulty unit, or planning a full heating system overhaul, our Gas Safe engineers are here to help.

We cover (but are not limited to): St Albans, Harpenden, Hemel Hempstead, Radlett, Barnet, Bushey, Elstree, Borehamwood, London Colney, Potters Bar, Mill Hill, Finchley, Watford. 

If you're not sure whether we cover your area, just give us a call or send us a quick message — we're happy to help.

Frequently asked questions

How do I know if my radiator needs replacing?

There are several signs that your radiator may need to be replaced:

  • Cold spots, especially at the bottom, even after bleeding

  • Leaks or visible rust/corrosion

  • Frequent air or sludge buildup

  • Radiators that take a long time to heat up

  • Unusual noises coming from the radiator or pipes

  • Rising energy bills due to reduced efficiency

If your radiator is old or showing these signs, it's likely time to consider a replacement. We can assess your system and recommend the best solution.

Can I move a radiator to a different wall?

Yes, radiators can be relocated to a different wall or part of the room. This is a common request during home renovations or layout changes. However, moving a radiator involves adjusting pipework, and it’s important to ensure the new location allows for proper heat distribution and safe installation.

Our qualified heating engineers can carry out radiator relocations cleanly and efficiently, ensuring everything complies with building and heating regulations.

Can a plumber install a radiator?

A plumber can install your radiator, but will need a gas safe accreditation if they’re to continue any additional work that affects your boiler. Our engineers are gas safe accredited to give you complete peace of mind that your heating system is operating safely and effectively.

What type of radiator is most energy efficient?

The most energy-efficient radiators are typically:

  • Aluminium radiators – They heat up and cool down quickly, reducing wasted energy.

  • Radiators with thermostatic radiator valves (TRVs) – Allow you to control temperatures room by room.

  • Modern panel or convector radiators – Designed to maximise heat output while minimising energy use.

We can help you choose the most efficient radiator for your home based on your heating system, room size, and energy goals.

Should I bleed my radiator or call a professional?

If your radiator isn’t heating properly, it might be due to trapped air, sludge buildup, or an issue with the valves or pipework. While bleeding a radiator can sometimes help, we recommend calling a professional.

A qualified heating engineer can diagnose the root cause and carry out the correct fix — whether it’s bleeding, balancing the system, replacing a valve, or performing a power flush. Trying to fix it yourself without the right tools or experience can lead to bigger problems or even leaks.

For peace of mind and long-term reliability, it’s best to let a professional take care of it.