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Key Takeaways
- In the Grant vs Worcester Bosch match-up, Grant wins on efficiency, while Worcester wins on tech. Grant hits 93% efficiency, among the highest efficiencies available.
- Both brands need yearly service to keep your warranty. This makes sure your boiler will shut down safely if there’s water loss.
- Over time, a Grant boiler often saves more on fuel costs thanks to better energy efficiency.
- Always get the right size boiler (up to 70kW for big homes) for your needs. Too big or too small won’t work well.
- If you’re thinking long-term, Worcester offers more renewable energy options that work with solar, heat pumps, and other green tech.
Stuck between Grant and Worcester Bosch for your next oil boiler? You’re not alone! For 4 million households off the UK’s gas network, picking the right oil boiler impacts both comfort and costs.
This guide cuts through the noise, comparing Grant vs Worcester Bosch boilers on efficiency, price, and features. Whether you need a new oil boiler or a replacement boiler, we’ll help you choose wisely. Let’s dive in!
Why Trust Grant and Worcester Bosch for Oil Boilers?
Worcester Bosch and Grant dominate the UK oil boiler market, but why? Worcester Bosch has decades of trust, backed by service engineers nationwide. Their Greenstar models blend reliability with smart tech.
Grant, meanwhile, specializes in oil-fired boilers. Their Vortex Pro line boasts award-winning efficiency. Both serve off-grid homes, but Grant focuses solely on oil and LPG, while Worcester offers gas boilers too.
Key difference? Grant’s niche expertise vs Worcester’s broader heating solutions.
Efficiency Face-Off: Grant Vortex vs Worcester Greenstar
Energy efficiency decides long-term savings. Here’s the breakdown:
- Grant Vortex: Hits 93% efficiency thanks to stainless steel heat exchangers and a turbulator-baffle system.
- Worcester Heatslave II: Reaches 90-92% using condensing tech.
While both use condensed tech, Grant’s design squeezes more heat from the fuel. Over 15 years, that 3% gap could save £1,000+ on heating bills.
Pro tip: Pair either boiler with renewable energy sources like solar for bigger savings!
Design Wars: What Makes Each Boiler Unique?
While both brands are the best on their own terms and features, here are the unique points of both.
Grant Vortex Pro
- Stainless steel heat exchanger (lasts longer than aluminium rivals).
- External models save indoor space.
- 70kW output for large homes.
Worcester Heatslave II
- Compact design with frost protection.
- Smart thermostat compatibility.
- Low-pressure cut-off switch prevents damage from water loss.
Best for small homes? Worcester. Bigger properties? Grant’s Vortex Pro shines.
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Reliability: Which Brand Lasts Longer?
Both brands excel, but nuances matter:
- Worcester Bosch: 10-year warranty (if installed by their heating engineers). Known for 15-20 year lifespans.
- Grant: Simpler mechanics mean fewer breakdowns. Offers 5-year parts and labour coverage.
- Fun fact: Grant’s burner design handles the UK’s variable oil quality better.
Price Comparison: Upfront Costs vs Long-Term Savings
| Factor | Grant | Worcester Bosch |
|---|---|---|
| Boiler Cost | £1,800 – £4,000 | £2,000 – £5,230 |
| Installation | £1,000 – £1,500 | £1,000 – £1,500 |
| Annual Service | £150 – £250 | £150 – £250 |
| 15-Year Fuel Savings | £3,200 | £2,800 |
Budget pick: Grant. Premium choice: Worcester.
Warranty Showdown: What’s Covered?
- Worcester: Up to 10 years (with accredited installer).
- Grant: 2 years standard, extendable to 5.
Installation Tips for Your New Oil Boiler
- Hire experts: Use heating engineers familiar with your brand.
- Location matters: Grant’s external models avoid indoor space issues.
- Ask about flue options: Worcester’s flexible flues suit tricky layouts.
Did you know? Poor installation can slash efficiency by 10%!
Which Has Better Customer Service?
Worcester wins with their UK-wide service engineers who can help you faster than Grant’s local partners. When your heating stops working in winter, Worcester’s big team means you’ll get help quickly. Grant has been getting better at this too, especially for folks who need an oil boiler.
Can I Use LPG?
Yes! Both brands offer great oil and LPG models if you don’t have mains gas. Whether you want a Grant boiler or Worcester oil combi, you can choose either fuel.
“We live in the countryside with no gas lines, and both Grant and Worcester had options for us”, one happy customer told us.
Do They Work With Heat Pumps?
This is where they differ. Worcester’s Greenstar systems work with heat pumps and can switch between oil and renewable energy depending on what’s most efficient.
Grant focuses more on making great oil boilers like their Vortex and Danesmoor ranges. If you want to mix your heating system with renewable options, Worcester gives you more choices.
How Noisy are They?
No one wants a loud boiler! Grant’s Vortex runs at about 55dB – about as loud as your fridge. This makes it great for when the boiler sits near your living space.
Worcester’s models are just as quiet. There’s so little difference in noise between Grant or Worcester oil boilers that it shouldn’t sway your choice.
Which Holds Value Better?
Worcester Bosch has a slight edge here because more people know their name. Real estate agents say a Worcester boiler can help sell a house.
But experts know Grant boilers are just as good. The Grant currently hits 93% efficiency (hence the name of some models), making them among the highest efficiencies available on the market.
Final Verdict: Grant or Worcester Bosch?
While both heating boilers are well-reputed and worth spending your money on, the ultimate choice depends on your unique requirements for the oil boiler.
Choose Grant if:
You want top energy efficiency with the highest efficiencies available at 93%. This can save you money if you have high heating needs.
Grant boilers work great in bigger homes that need an oil solution. Their floor models hold more water and transfer heat better.
If you’re watching your budget, Grant usually costs less. “There’s often a big difference in price between similar Grant and Worcester models,” one installer told us.
Choose Worcester if:
You love smart tech. Worcester’s controls, including advanced thermostat options, let you manage your heating better. They work with home automation and phone apps too.
Worcester Bosch gives longer warranties for peace of mind, which is great if you’ll stay in your home for many years.
If space is tight, Worcester’s combi boiler designs are more compact. Their wall units work well in smaller homes.
FAQs
Both are great, but Worcester Bosch is known for being more reliable. Grant is super energy-efficient. The right choice depends on what your home needs.
Grant boilers tend to be cheaper upfront. Worcester Bosch might cost more, but it’s known for better long-term reliability.
Yes! Grant oil boilers are excellent. They reach 93% efficiency (among the highest available) and have award-winning designs. Their stainless steel heat exchangers last longer than aluminum ones, and they handle the UK’s variable oil quality better than most. Grant specializes in oil boilers, so they know their stuff!
Grant and Worcester Bosch oil boilers last 15 to 20 years. They need regular servicing. Taking care of them helps them last longer.
Absolutely! The Boiler Upgrade Scheme offers £7,500 toward replacing oil boilers with heat pumps. For low-income households, the ECO4 scheme can cover the full cost of replacement. Regional programs like Warmer Homes Scotland and Nest (Wales) also offer help. Your local council might have extra support too!
