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Switched on London Ltd t/a Switched on London

MCS Certified BUS Registered
625 Garratt Lane, LONDON, Greater London, SW18 4SX
Air Source specialistBUS grant eligible495 reviewsServes 1 regions

4.9

495 Google reviews

1–2 days

Typical install time

£7,500

BUS grant amount

About Switched on London Ltd t/a Switched on London

Switched on London Ltd t/a Switched on London is an MCS certified air source installer based in Greater London. They are registered with the Boiler Upgrade Scheme, meaning they can help you claim up to £7,500 towards your installation.

System typesAir Source
BUS grant handledYes

Coverage area

Map coming soon

Based in Greater London, SW18 4SX

Areas served:

London

Reviews

4.9

495 Google reviews

Based on verified Google reviews

P

Paul Halford

3 weeks ago

Excellent as ever. Largely a routine boiler service but Anthony gave very helpful explanations of few basic heating maintenance tips as well as very thorough safety checks. Also solved a dripping water pipe joint very quickly. Always impressed by how easy this company is to deal with and seem reliable after several appointments with them.

M

Matthew Oon

4 weeks ago

Friendly booking service, and were helpful to inform me about timings and delays etc. David was the technician who came to inspect my ASHP. He was friendly and polite, and came in and quickly got to it. He told me what he thought was wrong (some settings), and that he cleaned out the filter on the Heat Pump. He then took the time to explain what changes he made, why he made them and just gave a general explanation on how the system works. Being new to ASHP I had a lot of question that he patiently answered. David was very knowledgeable and was even kind enough (as I had some time left for the pre booked hour) to help me with adjusting the valve on my showers to allow more hot water! Highly recommend, and will be using their services for any other problems, as well as servicing my ASHP

E

Emily Hadjinicolaou

a month ago

We’ve used Switched On on a few occasions and we’ve been very happy with the service. Most recently we had Anthony to come and check on a few issues with our central heating and he dealt with everything very efficiently and in a professional manner. He provided suggestions and advice which we found very useful. Switched On is our first choice for any issues around the house.

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Lizzy Russell

2 months ago

I had Anthony come out to do an annual boiler service. He was really thorough and helped explain everything to me so I could understand and use my boiler. As someone who is a first time buyer and learning all the ropes I can’t recommend this company enough. Their admin staff were also so kind and professional over the phone.

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Emma Triller

3 months ago

Anthony was very professional and thorough. He checked our boiler and other appliances meticulously, asked questions and explained the process to me. I made notes under his guidance and I now feel much more confident about adjusting the boiler. I learned a lot. I recommend that companies like Switched On make this guidance available to tenants and homeowners. It is a game changer for people who have no experience with gas boilers. Thank you, Anthony, for sharing your expertise and for doing an excellent job.

Showing 5 of 495 reviews. View all on Google

Frequently asked questions

How do I know you’re properly qualified and certified to install heat pumps?

We are MCS‑certified and registered with an approved consumer protection/competent person scheme, which is essential for quality assurance and to access grants like the Boiler Upgrade Scheme (BUS).

Can you tell me if a heat pump is actually suitable for my home?

We carry out a detailed home assessment, including property type, insulation levels, existing heating system and available outdoor space, to confirm whether a heat pump is a good fit.

What type and size of heat pump will you recommend for my property, and why?

We design the system using a heat‑loss calculation for your home, then match the correct kW size and model (for example, air‑source vs ground‑source) so it runs efficiently and reliably.

What will the full installation cost be, and what’s included in your quote?

Our fixed quote clearly lists the heat pump, cylinder, controls, labour, scaffolding (if needed), electrical work and any radiator or pipework upgrades, so you know exactly what you’re paying for.

Can you help me access government grants like the Boiler Upgrade Scheme?

Yes, as an MCS installer we can confirm your eligibility, apply for the BUS grant (worth up to £7,500) on your behalf and deduct it directly from your quote.

How much disruption should I expect during installation, and how long does it take?

A typical air‑source heat pump installation takes around 2–5 days, and we’ll agree locations for the indoor and outdoor units, manage any planning considerations and keep you informed each day.

Will I need to replace my radiators or upgrade anything else in my home?

After the heat‑loss survey, we’ll advise if any radiators, pipework, electrics or hot‑water cylinder need upgrading so the system can run efficiently at lower flow temperatures.

How noisy is the outdoor unit and where will it be installed?

Modern heat pumps are designed to be quiet and must meet UK noise regulations; we’ll position the unit to minimise any impact on you and your neighbours and comply with local planning rules.

What warranties, servicing and aftercare do you provide?

You’ll get manufacturer warranties on the heat pump plus our workmanship guarantee, and we offer ongoing servicing and support to keep your system performing at its best.

What running costs and savings can I realistically expect compared to my current boiler?

We’ll estimate your likely annual running costs and potential savings based on your current fuel type, insulation level and tariffs, using real‑world performance data rather than lab figures.

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Verified credentials
NAPIT Registered
BUS Registered
Quick facts
Regions covered1 areas

Boiler Upgrade Scheme

Up to £7,500

off your heat pump installation

This installer handles the full BUS grant application — deducted directly from your quote. No upfront payment needed for the grant amount.

Scheme open until 2028 — limited funding available

Check your eligibility

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