Professional Boiler Installation from £1,895 | Worcester Bosch Accredited | 12-Year Guarantees Available
When your old boiler’s had its day, upgrading to a new A-rated combi, system, or regular boiler could save you hundreds of pounds a year on energy bills. At Home Assist 365, we make getting a new boiler straightforward – from free home surveys to installation and aftercare.
All our engineers are Gas Safe registered (No. 632778), and we’re proud to offer extended guarantees of up to 12 years on Worcester Bosch boilers.
Every Home Assist 365 boiler installation includes:
We believe in transparent pricing. Here’s what you can expect:
We’re FCA regulated (FRN 971539) and can offer 0% finance options subject to status. Spread the cost from just £27 per month.
Best for: Small to medium homes with 1-2 bathrooms. Combi boilers provide instant hot water on demand – no need for a separate hot water cylinder or cold water tank. They’re compact, efficient, and perfect for homes with limited space.
Best for: Larger homes with 2-3 bathrooms and high hot water demand. System boilers store hot water in a cylinder, so you can run multiple taps and showers at once without losing pressure.
Best for: Traditional homes with existing cylinder and header tanks in the loft. Regular (conventional) boilers work with existing gravity-fed systems and are ideal if you have multiple bathrooms or low mains pressure.
We'll visit your home, assess your heating needs, check your existing system, and recommend the right boiler for you.
You'll receive a clear, written quote with no hidden costs. Take your time – there's no pressure to decide immediately.
Most installations take 1-2 days. Our engineers will protect your home, complete the work to Gas Safe standards, and clean up thoroughly afterwards.
Before we leave, we'll show you how to use your new boiler, explain the controls, and answer any questions.
Real Money Savings: If you’re replacing a 65% efficient boiler with a 90% efficient model, you’ll save approximately £300-400 per year on a typical household gas bill. That’s £3,000-4,000 over 10 years. A new boiler costs £1,895-£2,395 and pays for itself in 5-7 years.
A-rated boilers are 90%+ efficient – most modern boilers fall into this category. For every £1 you spend on gas, 90p goes into heating your home. Compare this to older boilers: 15-20 year old boilers are only 60-70% efficient, and 20-30 year old boilers are 50-60% efficient.
All new boilers sold in the UK must be condensing boilers with a minimum efficiency of 88%. New boilers display an ErP label similar to fridges and washing machines.
Why Not Just Buy the Biggest? An oversized boiler costs more to buy, costs more to run, and cycles on and off more frequently reducing its lifespan. During your free survey, we’ll calculate the exact size you need based on your home’s heat loss.
What Affects Boiler Size? Number of radiators, number of bathrooms, property insulation levels, boiler type, whether you have underfloor heating, and hot water usage patterns all play a role.
Quick Size Guide: Small flat (1-2 beds, 1 bathroom) needs 24-27kW combi. Medium house (2-3 beds, 1 bathroom) needs 28-34kW combi or 18-25kW system. Large house (3-4 beds, 2 bathrooms) needs 35-42kW combi or 25-35kW system. Very large house (4+ beds, 3+ bathrooms) needs 35kW+ system or regular boiler.
Boiler size (measured in kilowatts or kW) determines how much heat your boiler can produce. Get it wrong and you’ll either waste money on an oversized boiler or struggle with one that’s too small.
Our engineers will assess all these factors during your free home survey and recommend the best option for you.
Space Constraints: Combis are compact and don’t need a cylinder, making them ideal for flats and smaller homes. System and regular boilers need space for a cylinder.
Water Pressure: Low mains water pressure? A system or regular boiler with a cylinder will give you better hot water flow than a combi, which relies entirely on mains pressure.
Your Existing System: If you already have a hot water cylinder and header tanks in the loft, a regular boiler might be the most cost-effective replacement. Converting to a combi means removing tanks and altering pipework – adding to the cost.
Property Size and Hot Water Demand: A 1-2 bedroom flat with 1 bathroom needs a 24-28kW combi boiler. A 2-3 bedroom house with 1-2 bathrooms works well with a 28-35kW combi or system boiler. For 4+ bedroom houses with 2+ bathrooms, you’ll need a system or regular boiler. If multiple bathrooms are in use simultaneously, a system or regular boiler is essential.
Choosing the right boiler isn’t just about price – it’s about finding the perfect match for your home’s heating needs.
We’ll discuss the pros and cons of each brand during your free survey and help you choose the right one for your situation.
Baxi: Long-established British brand. The Platinum and EcoBlue ranges offer solid performance. Competitive pricing and good local support. Reliable choice for straightforward installations.
Viessmann: Premium German manufacturer. Excellent build quality and cutting-edge technology. The Vitodens range is exceptionally efficient. Higher initial cost but outstanding long-term reliability.
Ideal: British brand offering great value without compromising quality. The Logic range provides reliable performance at competitive prices. Good warranty terms and widely available parts. Popular choice for landlords and budget-conscious homeowners.
Vaillant: German engineering at its best. Premium quality boilers with excellent build quality. The ecoTEC range is particularly efficient and quiet. Strong warranties and responsive customer service. Good choice for those wanting top-tier quality.
Worcester Bosch: The UK’s most popular brand. Known for reliability and long warranties – up to 12 years on some models. Excellent customer service and parts availability. Models like the Greenstar range offer superb efficiency. Ideal for homeowners wanting peace of mind and proven performance.
We’re not tied to one manufacturer. We install all major boiler brands and will recommend what’s genuinely best for your needs and budget.
After Installation – Ongoing Support: Your new boiler comes with a manufacturer’s warranty – typically 2-10 years depending on the model. We’re available for any questions or concerns – just call us. We recommend an annual service to maintain warranty and efficiency.
Final Checks and Handover: We run the boiler through several heating and hot water cycles to ensure everything works perfectly. All safety devices are tested. We show you how to operate your new boiler and controls. You’ll receive the manufacturer’s warranty documentation, our installation certificate, Gas Safe Building Regulations Compliance certificate, and user manuals. We clean up completely and dispose of your old boiler responsibly. You’ll have hot water and heating working before we leave.
Late Afternoon – Testing and Commissioning: We fill and pressure-test the system for leaks. The boiler is powered up and put through initial start-up procedures. We set the correct gas pressure and check combustion ratios. Every radiator is bled and checked for proper heating. Hot water is tested at multiple taps. All controls and thermostats are programmed and tested.
Mid-Morning to Afternoon: We prepare the wall mounting area – drilling and fixing the new backplate. Your new boiler is carefully mounted and leveled. We connect all pipework – this may involve some alterations to ensure everything fits correctly. We connect the gas supply with new pipework if needed. The flue is fitted and sealed – ensuring safe evacuation of gases. All electrical connections are made and tested.
Installation Day – Morning: Our engineers arrive on time with all equipment and your new boiler. We lay dust sheets to protect your floors and furnishings. We isolate your heating system and safely drain down the old boiler. The old boiler is disconnected, removed, and set aside for disposal.
Scheduling Your Installation: Once you accept the quote, we’ll book your installation at a convenient time. Most installations take one day for a like-for-like replacement. System upgrades or complex jobs take 1-2 days. We’ll confirm the appointment and arrival time in advance.
Day 1 – Free Home Survey: Our engineer visits your property at a time that suits you. We assess your current system, measure up, discuss your needs, and check your water pressure and gas supply. We’ll recommend the best boiler type and size for your home. You’ll receive a detailed written quote within 24 hours – fixed price, no hidden costs.
We know having work done in your home is disruptive. Here’s exactly what happens from quote to completion.
If your area isn’t listed, give us a call – we cover a wide region and may still be able to help.
North Somerset: Portishead, Clevedon, Nailsea, Long Ashton, Backwell, Yatton, Weston-super-Mare.
South Gloucestershire: Bradley Stoke, Thornbury, Yate, Chipping Sodbury, Patchway, Winterbourne, Frampton Cotterell, Filton.
South Wales: Newport, Cardiff, Chepstow, Caldicot, Monmouth, Cwmbran, Caerphilly, Pontypridd.
Bath: City Centre, Oldfield Park, Twerton, Weston, Combe Down, Batheaston, Bathwick, Bear Flat, Widcombe, Lansdown, Larkhall.
Bristol and Surrounding Areas: Clifton, Redland, Cotham, Bishopston, Westbury-on-Trym, Henleaze, Southville, Bedminster, Knowle, Brislington, St George, Fishponds, Filton, Stoke Bishop, Horfield, Ashley Down, Easton, St Pauls, Montpelier, Kingswood, Hanham.
We install new boilers across Bristol, Bath, South Wales, and surrounding areas:
We know choosing who to trust with a major purchase like a new boiler is a big decision. Here’s why customers choose us:
We live and work in your community. When you call, you speak to us – not a call centre. We care about our reputation and treat every installation like it’s in our own home.
We’ll recommend what’s genuinely best for your home and budget. If your boiler can be repaired cost-effectively, we’ll tell you that instead of pushing for a sale.
Most installations completed in one day. You’ll have heating and hot water working before we leave.
We follow manufacturer specifications exactly. Full commissioning and testing. Building Regulations compliance certification. Clean, tidy work – we protect your home and clean up after ourselves.
The price we quote is the price you pay. No hidden extras, no last-minute add-ons. Everything is included in writing before we start.
We install boilers with some of the longest warranties available. Worcester Bosch premium models come with up to 12 years manufacturer warranty when installed by us
We offer transparent, fair finance options if you need to spread the cost. Fixed monthly payments from £27/month with no hidden charges.
Every installation is carried out by fully qualified, insured Gas Safe engineers. We never use subcontractors – it’s our own team, every time.
At Home Assist 365, our values are rooted in reliability, honesty, and high-quality workmanship. We believe in clear communication, fair and transparent pricing, and completing every job correctly the first time. Our engineers focus on safe, efficient, long-term heating solutions rather than short-term fixes, ensuring lasting peace of mind. Every customer is treated with care, respect, and dependable support, 365 days a year.
Most straight replacements (like-for-like) take 1 day. System upgrades or complex installations may take 2 days.
No – we’ll need to disconnect your old boiler first thing in the morning, but we work quickly to minimize disruption. Most customers have heating and hot water back by the end of the day.
Yes, we’ll safely disconnect, remove, and dispose of your old boiler at no extra cost.
As Worcester Bosch accredited installers, we can offer up to 12 years parts and labour warranty on selected Worcester Bosch boilers. Other brands typically come with 5-10 year manufacturer warranties.
