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 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.

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 and sit back while our experienced engineer installs your brand new, energy saving boiler.

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.

Why Us?
  • LS1 offers affordable and honest pricing – put us to the test 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 it’s 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 the 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 168 reviews
Reliability & Timekeeping 99.6%
Appointments reported as missed (6 months) 0
Average score 9.95

Allow us to introduce ourselves

We are LS1 Boiler Installation; a professional, friendly and family-run boiler and central heating company based in South West London. We started out as Landlord Safety 1st back in 2005 with a focus on servicing property professionals such as local authorities, landlords and estate agents. As our reputation for offering a 5 star service for busy property professionals grew, we quickly established ourselves as experts in the plumbing and heating sector and began receiving more and more requests to work for residential home owners.

Eventually, in 2007 we decided to use our experience of high-spec boiler installations for property professionals and meet the growing demand to service the domestic market by launching LS1 Boiler Installation. We are now London’s number 1 boiler replacement specialists and we owe our success to our army of happy customers who 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. We’re also experts on all the latest technology and innovations like SMART controlled central heating.

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  • PL-which
  • PL-trustpilot
  • PL-checker
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  • PL-checker
  • PL-vaillant
  • PL-worcester
  • PL-which
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