Professional Boiler Installation & Replacement in South London & Surrey

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G Brown
18/02/2025
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Great service, professional and communicates promptly. Needed a tap replacing as this was leaking. Top notch - thanks.
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Tracy Drummond
16/02/2025
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Prompt response to call out of hours, Friday night. Arrived within 30 minutes and water leak stopped and repaired in 30 minutes. Very impressed thank you - highly recommend
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Jason R
03/02/2025
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Plamen has been an absolutely top-class professional throughout. He replaced the blown thermostats in our immersion heater and also went out of his way to find ones that were reasonably priced (several were excessively priced). Here he really went above and beyond, which took him many hours of driving to find and then return and finish the job! He also helped me balance the pressure in our underfloor heating and provided some really helpful advice and tips with other aspects of the heating system, again demonstrating his deep knowledge and expertise. I will 100% be coming back to Topflow if we need any help in the future!! Thank you kindly - another very happy customer :)
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Roman Bryl
25/01/2025
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Plamen was very efficient, polite and did a great job at a reasonable price.
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jc n
21/01/2025
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Plamen has done a few repairs on my boiler. He is always on time, he send me updates and leaves the place spotless when done.?
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Kim Esnard
16/01/2025
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Excellent service! Prompt, professional and efficient. Completely changed my waste disposal unit and replaced it with a standard unit. Very helpful, clean and affordable service.
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Lady Jo
14/01/2025
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Plamen came today at very short notice. I found his details in checkatrade. My kitchen was flooded with water due to blocked kitchen sink. He said he could be at my place after finishing another job and he arrived in less than 1 hour. He wore shoe protectors to avoid leaving any dirt on my floor. He unblocked the drain, gave me some good advice. Very courteous and professional. I will definitely call him again and he also does handyman work.
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Radul Chavdarov
07/01/2025
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Quick and great work, i would recommend anytime. Thank you
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Sparsh Jain
30/12/2024
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Excellent plumbing service in Sutton
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Steve Lione
28/12/2024
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Just had to comment on the fantastic sevice, telephoned a number of plumbers with no response, this guy was brilliant said could come out same day but would be 8 o'clock at night, he asked for pictures and rang to say could do 7! Arrived on time,very friendly,had everything with him, did the the job spot on, clean tidy and respectful,what can I say would definitely recommend, would use again without hesitation!

Upgrade Your Boiler for Efficiency & Reliability

If your boiler is old, inefficient, or constantly breaking down, it’s time for a replacement. At TopFlow Services, we provide professional boiler installation and upgrades across Sutton, Carshalton, Cheam, Wallington, Epsom, Banstead, Coulsdon, Purley, Morden, New Malden, Wimbledon, Raynes Park, and Worcester Park.

Our Boiler Installation Process

  1. Free Home Survey – We assess your heating needs.

  2. Expert Recommendations – We help you choose the best boiler.

  3. Transparent Pricing – No hidden costs.

  4. Professional Installation – Carried out by Gas Safe registered engineers.

  5. Post-Installation Support – Warranty registration and aftercare.

Emergency Boiler instalation – 24/7 Service

Boiler broken down? Don’t wait! Our emergency team is available for urgent installation.

📞 Call our emergency helpline: 

phone number

Types of Boilers We Install

We install and replace combi, system, and conventional boilers from trusted brands, including:

  • 🔥 Worcester Bosch

  • 🔥 Vaillant

  • 🔥 Ideal

  • 🔥 Baxi

  • 🔥 Glow-worm

Areas We Cover for Boiler Installations

We install boilers across:

  • Sutton, Carshalton, Cheam, Wallington

  • Epsom, Banstead, Coulsdon

  • Purley, Morden, New Malden

  • Wimbledon, Raynes Park, Worcester Park

areas served map

Transparent Pricing & Flexible Appointments

We believe in fair, upfront pricing — no hidden charges.  We can arrange convenient weekday or weekend visits.

Need urgent help? We also offer emergency boiler repairs if your system fails unexpectedly.

Why chooses us for boiler Instalation

five stars

Highly rated

We are trusted by homeowners and businesses across your area - just see our perfect 5-star Google reviews!

customer service

Great customer service

Expect friendly service from someone that genuinely cares. We treat your home like it’s our own - neat, tidy, and respectful.

guarantee

Satisfaction guaranteed

We fix it right the first time. Our work is backed by a satisfaction guarantee, so you can trust it’s done right.

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Transparent pricing

Nobody likes surprise costs, especially when it comes to home repairs. Get an upfront quote with no hidden fees.

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Honest & trustworthy

When you choose us, you can trust that we’ll do an honest job. We are licensed, insured, and highly rated by local customers.

24/7 availability

24/7 emergency plumbing

Burst pipe at 2am? We’ve got you covered with fast, reliable, round-the-clock emergency services that you can rely on.

Call now

Get in touch for a free quote

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Boiler service FAQs

Most installations are completed in 1 day, but complex jobs may take longer.

It depends on your home size and heating needs. We’ll help you choose the best option.

 Yes. All our boiler engineers are fully qualified and Gas Safe registered.

No, we do not charge a call-out fee. Whilst some plumbers will charge a call out fee and often not fix your issue, we offer a satisfaction guarantee and will make sure we always deliver work to the highest standards or your money back. We are happy to visit you to properly assess the job and give you a free quote before we begin work.

Any additional costs such as parts will be factored into your quote, so you can rest assured knowing you have a fixed price. We pride ourselves on our customer satisfaction and delivering the highest quality work. This includes making you feel relaxed and confident in us throughout the process.