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Trust PLYMOUTH’s boiler experts to install your new boiler

Gas Safe and OFTEC Registered

Prices starting from £1400 or £19.53 per month* for supply and install

Worcester Bosch accredited company

Full service available including new radiator fitting

new boiler Honiton

New Boiler Plymouth

Trust Synergi, Plymouth’s new boiler experts to install your new boiler

  • Gas safe registered
  • Prices starting from £1400 or £19.53* per month for supply and install
  • Worcester Bosch accredited company
  • Guarantees of up to 12 years
  • Which? Best Buy winning boilers
  • Full service available including new radiator fitting

    Discover why hundreds of Plymouth households chose Synergi to install their boiler

    Quality Boilers

    We only install boilers from leading manufacturers in the industry, such as the Which? Best Buy in September 2019 for quality and dependability winner, Worcester Bosch. 

    Trusted and Reliable

    We’re pleased to be rated an average of 4.6/5 on Google Reviews, 4.8/5 on Trustpilot and 4.7/5 on Facebook.

    Read our verified reviews.

    Local and Independent

    Small enough to care, but big enough to cope. Our most valuable asset is the skill set of the local people who make up our team. Our customer care staff are always available to assist.

    Fast Installation

    Do you have a problem? We are aware of how distressing it can be to not have hot water or heating. From start to finish, we typically can install a new boiler within 48 hours. Simply inform us if it is urgent.

    Finance Available

    You can spread the cost of your new boiler over a period of 120 months at 7.9% APR or 24 months at 0% APR. We’ll assist you in locating the ideal boiler at an affordable price.

    new boiler plymouth
    Janet Bigwood
    Janet Bigwood
    Very professional, efficient, reliable and friendly service. Appointment made within 2 weeks. Engineer arrived on time. Very knowledgable about heat pumps. Identified several installation faults (not installed by Synergi) which were clearly explained. Follow-up report sent the same afternoon. I would highly recommend Synergi for servicing heat pumps.
    Jeff Varker
    Jeff Varker
    Lisa searched for many months for a reliable plumbing and heating contractor to install a combi boiler and heating in her new house and was very relieved to find Synergi (SW) Ltd. This was a challenging project but we were reassured by their professional approach and advice. Their highly efficient operatives attended on due date and after careful inspection of the site were soon on the job. We cannot praise them highly enough, they were awesome. Thank you Synergi for a job well done and excellent value for money.
    Rachel Hayman
    Rachel Hayman
    Rich helped with a low pressure issue with our boiler this morning. He responded quickly and was extremely helpful. Highly recommend! Thank you
    James Butler
    James Butler
    Fantastic service! Our old boiler finally gave up on us and we had our new boiler installed within 48hours! All the engineers were very friendly and efficient. Jay in particular was incredible. He put in extra effort to get the installation done in such a small time window. We were very grateful as we have 2 young children. We would 100% recommended Synergi SW to anyone.
    Anthony Organ
    Anthony Organ
    We received exceptional service from all at Synergi. Highly recommended.
    Tim Mortimer
    Tim Mortimer
    Please indicate your overall satisfaction with Synergi SW (drag the circle to slide to your answer) Selected Value: 5 (1 min / 5 max) How satisfied were you with our engineer/s? (drag the circle to slide to your answer) Selected Value: 5 (1 min / 5 max) How satisfied were you with the standard of work carried out? (drag the circle to slide to your answer) Selected Value: 5 (1 min / 5 max) How satisfied were you with how clean and tidy our engineer/s left your property? (drag the circle to slide to your answer) Selected Value: 5 (1 min / 5 max) Do you have any additional comments for us? excellent workmanship. will be using you again. Highly recommended. Thank you! Please tell us your name, postcode or customer number below so we can locate your information. This will allow us to identify your plumber/engineer and job so we can follow up if needed. Tim Mortimer
    David Foster-Key
    David Foster-Key
    This company is a family business run properly who have really gone out of their way to sort our problems for us (including dropping everything when we had an emergency gas problem and coming straight over). We have used them to sort our underfloor heating, solar collector and associated electrics. Highly recommended.
    Peter Rhodes Finney
    Peter Rhodes Finney
    Fitted out our ensuite and we're very good and helpful would use again highly recommended
    Slim Big
    Slim Big
    Very professional engineer carried out the work very prompt and efficient highly recommended
    Ailsa Masters
    Ailsa Masters
    I would just like to express my gratitude to Simon, for all his hard work yesterday. He came to install 2 new radiators at my house, but ended up having to spend longer removing large quantities of air that had built up in the system. My thanks to Joe aswell for helping at the end of the day to get my rather old heating system back up & running again. My house hasn't been this warm in years! You are both extremely hard working, tidy & professional! Thank you.

    The Synergi Price Match Promise

    For your new boiler package, we will not be beaten on price. Additionally, you will be charged the price we quote. There will be no additional fees for certification, waste removal, or registration.

    We promise to go above and beyond by offering genuine value from the beginning and following up to ensure your complete satisfaction.

    We bet you won’t find a package that’s comparable for less anywhere else. We will, however, match it if you do!

    cheap online boiler quote

    Our new boiler Satisfaction guarantee

    We strive to provide our customers with exceptional satisfaction in our boiler packages and installations.

    We are experts in our field, consistently providing unparalleled service and high-quality goods to thousands of South West households annually. We take great satisfaction in being fair and honest. We guarantee that we will always present you with the best choices.

    We won’t be happy until you are.

    “Best Plumbing Maintenance and Repairs Company, South West England”

    – BUILD Construction and Engineering Awards 2022

    A Guide to your New Boiler Plymouth from Synergi SW

    Watch to find out about the process and benefits of choosing Synergi to install your new boiler.


    Our planet is being harmed by climate change, but if we all make small changes, we can have a big effect.

    We’ve partnered with more:trees to plant trees, so you can help sequester carbon dioxide in the future. When you install a new boiler from Synergi, we will plant a tree on your behalf.

    Throughout the year we will also be supporting the Alzheimers Society as they face dementia head on; leading the way in support, society and research. We also donate £1 for every new boiler installed.

    Sometimes it’s the little things that count.

    We promise we will…

    Protect your property with dust sheets and floor protector as required.

    Explain the installation process and answer any questions.

    Protect your boiler with a magnetic heating filter, hot water scale inhibitor & shock absorber. 

    Treat your heating system with the correct chemical inhibitors. 

    Explain all the controls and provide a demo of your new boiler. 

    Complete the paper work registering your new boiler guarantee.

    Clean up, safely dispose all waste and leave your property tidy.

    Oil Boiler Installations

    We are honoured to be included in the competent person scheme of OFTEC, which is a list of approved oil heating engineers. All technicians must take a training course and pass an exam to become OFTEC registered.

    Select the button below to learn more about oil boiler installations.

    Oil Boiler Installations

    We are honoured to be included in the competent person scheme of OFTEC, which is a list of approved oil heating engineers. All technicians must take a training course and pass an exam to become OFTEC registered.

    Select the button below to learn more about oil boiler installations.


    Big enough to cope. Small enough to care.

    Spread the cost of your new boiler

    Example finance options, contact us for a free quote.

    Up to 10 years 9.9% finance

    Don’t sacrafice quality and added value, spread the cost now and secure your future benefits.

    Total Amount: £1,700.00
    Deposit: £500.00
    Monthly Payment: £21.98
    Number of payments: 120
    Representative APR: 9.9%
    Total amount payable (Incl. Deposit): £3,137.60
    Deferral Period: 0 Months

    2 years interest-free credit

    Money is better in your bank than ours, utilise our interest-free credit and continue to save your money.

    Total Cash Price: £2,200.00
    Deposit (optional): £500.00
    Total loan amount: £1,700
    Duration of loan: 24 Months
    Monthly payment: £70.83
    Total charge for credit: £0.00
    Fixed APR (representative) x0.0%
    Total amount payable: £2,200

    New Boiler Plymouth: From Combi Boilers to System Boilers

    Combi Boiler

    In the UK, combi boilers, also known as combination boilers, are the most widely used boiler for domestic hot water and gas central heating.

    To ensure maximum efficiency, a combi boiler only heats water when a hot tap or shower is turned on. There is no requirement to have a tank or space for a water storage cylinder in the loft.

    System Boiler

    A system boiler pumps hot water to the radiators and a sealed hot water storage cylinder. Most major components of the heating and hot water system are built into the boiler, making installation easier, tidier and more efficient, and also simplifies servicing.

    System boilers have exceptional “green” credentials in addition to high efficiency and performance.

    Regular Boiler

    Regular and conventional boilers are other names for heat-only boilers. If you are replacing an old boiler and have a small expansion tank and a larger cold water storage cistern in your loft space, you probably already have a heat only boiler.

    Heat only boilers are usually installed on an open vented system. The system will usually comprise two tanks in the loft.


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    Our favourite places in Plymouth

    We love working in Plymouth! Here’s some of our favourite things to do…

    Plymouth aquarium

    National Marine Aquarium

    The largest aquarium in the UK is the National Marine Aquarium (NMA), which is located in Britain’s Ocean City, Plymouth. It is proud to be a member of the Ocean Conservation Trust, a nonprofit organization whose mission is to connect people with the ocean.

    Plymouth hoe

    Plymouth Hoe

    Plymouth Hoe is a must-see on any trip to Plymouth because of its breathtaking panorama. It’s the ideal spot to have a picnic on the grass or take a dip in the art deco Tinside Lido on a sunny day.

    Plymouth barbican

    The Barbican

    The Plymouth Barbican is awash in heritage and history. In addition to the stunning architecture, there are a plethora of unique shops and art galleries as well as excellent places to eat, drink, and entertain.


    We understand boilers are a significant investment. This is why we promise to go above and beyond to help you choose the perfect, bespoke option for your home. We assess each enquiry individually and will be in touch to provide you with a free, fixed price quotation.