London's No.1 Boiler Replacement Specialists

Boiler Installation Made Easy

LS1 are the boiler installation experts you’ve been looking for. Get a new boiler before the hot water runs out.

£  PRICE MATCH GUARANTEE – if you find a cheaper like-for-like quote we’ll match it AND give you a £50 high street voucher.

£ FLEXIBLE PAYMENT OPTIONS – including Buy Now Pay Later and 0% finance from just £9 per month.

AWARD WINNING CUSTOMER SERVICE – our customer service team are trained to listen not to sell.

5 STAR CUSTOMER SATISFACTION – we have a 5 star rating on Trust Pilot and Which? Trusted Traders.

INSTANT ONLINE QUOTE – or we can send a surveyor to your home to provide a free, no obligation quote.

FREE 24/7 EMERGENCY BOILER BREAKDOWN COVER – 5 star boiler cover on new boiler installations.

PEACE OF MIND – Up to 12 year warranty on new boilers.


Are you a keyboard warrior? We can now complete an advisory survey online. Just start an instant chat with one of our friendly team and they will advise you on what pictures you’ll need to upload etc.

Getting a Boiler is as Easy as ...

Don’t panic, we offer evening and weekend appointments so there’s no need to book any time off work!


Fill in our online quote calculator or call our friendly team for a quote on new boiler installation. Once an engineer has visited your property we offer a fixed price promise on your quote.


Decide whether you want to spread the cost of your boiler in easy monthly payments with our 0% finance, or pay in full upon satisfactory completion of the job.


Choose a boiler installation date that suits you, then sit back and relax, while our experienced engineer installs your brand new energy saving boiler.

Why Us?
  • LS1 offers affordable and honest pricing – put us to the test and we’re sure you’ll be happy with our quote. We can also offer 0% finance starting at just £9 per month.
  • We’re simply the best! Well we like to think so, but we’re also backed up by hundreds of positive reviews on independent review sites, and our award winning customer service will ensure your installation and after-care service is hassle free.
  • We’re highly experienced boiler installers– we are one of just 5% of gas installers who have been DIAMOND accredited by leading boiler manufacturer Worcester Bosch. This means we have been through a stringent vetting and training process and are authorised to offer longer guarantees on their boilers.
  • We’re better than the ‘big boys’ – we’re not a nameless corporate entity, we genuinely care about our customers and doing a great job for them. We’re passionate about helping our local community and beyond with our various charity work.


Scores based on 170 reviews
[lvca_statsbars default_bar_color=”#3c5daa”][lvca_statsbar_item percentage=”99.6″ stats_title=”Reliability & Timekeeping “][lvca_statsbar_item percentage=”98.8″ stats_title=”Tidiness”][lvca_statsbar_item percentage=”100″ stats_title=”Courtesy”][lvca_statsbar_item percentage=”99.6″ stats_title=”Workmanshp”][/lvca_statsbars]
Appointments reported as missed (6 months) 0
Average score 9.95

Allow us to introduce ourselves

We are LS1 Boiler Installation, a friendly, family-run and ethical boiler and central heating company based in South West London. We started life as Landlord Safety 1st back in 2005, with a focus on boiler servicing and landlord gas safety inspections. As our reputation grew we decided to meet the growing demand and expanded our services to provide full central heating and boiler installations.

In 2007 we relaunched as LS1 Boiler Installation and we are now one of London’s largest boiler and central heating companies. We owe our success to our army of happy customers who continue to spread the word about what a great job we do.

When it comes to boiler installations, we really are the ‘A’ team because it’s what we do day in and day out. It also means we are bang-up-to-date on all the latest innovations and new technology like the fantastic Nest smart control that makes managing your heating and hot water a doddle.

As Used by
As Featured In
  • PL-trusttrade
  • PL-gassafe
  • PL-trusttrade
  • PL-gassafe
  • PL-vaillant
  • PL-worcester
  • PL-which
  • PL-trustpilot
  • PL-checker
  • PL-award
  • PL-trustpilot
  • PL-award
  • PL-checker
  • PL-vaillant
  • PL-worcester
  • PL-which
Get In Touch Today!

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