Complete Heating Solutions

Annett Heating installs and repairs central heating across Harrow and North West London, from adding or replacing a single radiator to fitting a complete new system. A full installation typically ranges from around £2,500 for a one-bedroom flat to £7,000 or more for a larger house, and we fit copper, soldered pipework rather than plastic because we want the work to last. Every job is Gas Safe registered and quoted up front after a proper survey.

Our Heating Services Include:

  • Central Heating Installation

    Complete new heating system design and installation, tailored to your property's needs.

  • Radiator Installation & Replacement

    Add new radiators or replace old, inefficient ones with modern, energy-efficient models.

  • Heating System Repairs

    Fast diagnosis and repair of heating faults to get your system back up and running.

  • Smart Thermostat Installation

    Upgrade to smart heating controls like Nest, Hive, or Tado for better efficiency and convenience.

  • System Upgrades

    Modernise your heating system for improved efficiency and lower running costs.

  • System Balancing & Optimisation

    Fine-tune your heating system for even heat distribution throughout your home.

Signs Your Heating Needs Attention

  • Radiators have cold spots or take a long time to heat up
  • Strange noises from your heating system
  • Uneven heating throughout your home
  • Rising energy bills without increased usage
  • Frequent need to bleed radiators
  • Your heating system is over 15 years old

Frequently Asked Questions

It depends heavily on the size of the property and the specification, so here is a realistic guide based on what we actually charge. A one-bedroom flat with around 3 to 4 radiators is typically £2,500 to £4,000. A two to three-bedroom house with around 8 to 10 radiators is typically £4,500 to £7,000. A four to five-bedroom house is typically £7,000 to £10,000 and up. Larger, high-specification jobs go higher again. As a real example, a recent full house we completed, a three-bedroom semi with a loft extension, a new boiler, three bathrooms and all new copper pipework, came to around £15,000 in labour, and a full high-spec whole-house project can reach £20,000 to £30,000 or more. One thing worth knowing is that we fit copper, soldered pipework rather than plastic. Plastic is cheaper and quicker to install, but we do not trust it to last, so we choose not to use it. That decision affects the price, but it is a big part of why our systems last. For anything beyond a straightforward job, please fill in our contact form and we will carry out a proper survey and give you a personalised quote.

Usually four to six days, though larger or more complex properties can take longer. A big part of the timescale is the flooring. If pipework needs to be chased into the floor, the floor has to be lifted, the pipes run, and then everything re-laid and screwed back down, which on its own can add a day or more. Whether the builder lifts the floor or we do also affects the time. We will give you a realistic timescale once we have surveyed the job.

Yes, absolutely. Whether you need a single radiator moved, replaced or added to an existing system, we can handle it. We can also upgrade to larger radiators if you find certain rooms are not getting warm enough.

Yes. These days we mainly fit Hive. Google has stopped manufacturing the Nest thermostat, so once the current shelf stock runs out there are no new ones being made. If you already have a Nest it will keep working until it develops a fault, and at that point we can change it over to Hive or another compatible model. A smart thermostat can make a real difference to your energy bills by letting you control your heating remotely and set schedules around how you actually use your home.

We cover Harrow, Wembley, Pinner, Stanmore and Kenton as our core North West London area, plus Watford, St Albans, Hemel Hempstead, Luton and the surrounding areas.

Gas Safe Register is the official, government-approved list of engineers who are legally allowed to work on gas appliances and installations in the UK. It replaced CORGI in 2009. By law, only a Gas Safe registered engineer can carry out gas work in your home, so checking registration protects you from unsafe or illegal work.

Yes, all our engineers are Gas Safe registered. You can verify us on the Gas Safe Register under registration number 562566.

Need Heating Help?

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