The Glow Worm Ultimate3 Regular Open-Vent Boiler offers reliable heating for small to medium homes at a competitive price point of around £870 for the 25kW model. You'll get solid efficiency ratings (89.6% SEDBUK), smart controls via the MiGo Wi-Fi thermostat, and potential annual savings of £160+ on energy bills. With its compact size and 5-year warranty (extendable to 10 years), it's a practical choice for upgrading your heating system. There's plenty more to discover about this budget-friendly powerhouse.
Key Takeaways
- The Glow Worm Ultimate3 boiler costs £870 for the 25kW model and £900 for the 30kW version, plus installation fees of £500-£700.
- Features include an A-rated efficiency, LCD display, frost protection, and compatibility with the MiGo Wi-Fi thermostat for smartphone control.
- Installation requires professional service, typically takes one day, and proper setup is crucial for maintaining the 5-year warranty coverage.
- The boiler's compact size (740x418x280mm) makes it ideal for small spaces, while its 25kW output suits homes with 10-15 radiators.
- Annual energy savings can exceed £160 thanks to its 89.6% efficiency rating and smart Grundfos pump that adjusts to heating demand.
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Glow Worm Ultimate3 Regular Open-Vent Boiler Overview
The Glow Worm Ultimate3 regular open-vent boiler delivers reliable heating performance without breaking the bank. At £870 including VAT, it's a cost-effective choice that doesn't compromise on quality or efficiency.
You'll appreciate its compact size (740mm x 418mm x 280mm), making it perfect for cupboard installations. The bright LCD display guarantees you won't need a magnifying glass to adjust your settings, while the aluminium heat exchanger provides dependable performance.
If you're looking for extra peace of mind, you can upgrade the standard 5-year warranty to 10 years by adding a Glow-worm power filter.
Plus, with its A-rated energy efficiency and high-efficiency Grundfos pump, you could save hundreds on your annual energy bills.
This 25kW boiler is ideal if you've got high hot water demands and a traditional heating setup.
Glow Worm Ultimate3 Regular Open-Vent Boiler Performance and Efficiency
When it comes to performance, Glow Worm's Ultimate3 regular open-vent boiler packs quite a punch with its 25kW output. You'll find it's perfect for small to medium homes with 10-15 radiators, and it won't break a sweat handling your heating and hot water needs simultaneously.
| Feature | Rating | Benefit |
|---|---|---|
| ErP Rating | A | Maximum efficiency |
| SEDBUK 2009 | 89.6% | Lower bills |
| Annual Savings | £160+ | More money in your pocket |
The boiler's high-efficiency Grundfos pump automatically adjusts to your actual heating demand – it's like having a smart assistant managing your energy use. You'll appreciate the aluminium heat exchanger that's built to last, while the MiGo app lets you control everything from your smartphone (perfect for those cosy morning lie-ins when you want to bump up the heat).
Glow Worm Ultimate3 Regular Open-Vent Boiler Pros and Cons
Looking at this efficient powerhouse of a boiler, you'll want to weigh up what makes it shine and where it might fall short.
On the plus side, you're getting a compact unit that'll fit snugly in most cupboards, with dimensions of 740mm x 418mm x 280mm. The high-efficiency Grundfos pump helps keep your energy bills down, while the smart MiGo Wi-Fi thermostat lets you control your heating from your phone.
However, this boiler isn't for everyone. It's only suitable for homes with traditional heating setups, requiring both a cold water tank and hot water cylinder.
With its 25kW output limit, it mightn't pack enough punch for larger properties.
The 5-year warranty is decent, though you'll need to register through Club Energy to activate it. You can extend it to 10 years by installing a power filter.
How Does The Glow Worm Ultimate3 Regular Open-Vent Boiler Compare To Similar Models From Other Manufacturers?
Comparing regular open-vent boilers can feel like manoeuvring through a maze of specs and features, but let's break down how the Glow Worm Ultimate3 stacks up against its main competitors.
While the Ultimate3 offers solid 93% efficiency and a decent 5-year warranty, premium brands like Worcester Bosch's Greenstar 8000 Life edge ahead with 94% efficiency and a lengthy 12-year warranty. However, you'll pay considerably more for those perks.
The Vaillant EcoTEC Plus matches Worcester's efficiency and carries a prestigious Which? "Best Buy" award, though it only offers a 5-year warranty.
If you're looking for a middle-ground option, Baxi's 800 Regular delivers similar efficiency to the Ultimate3 but includes a longer 10-year warranty at a comparable price point.
For comprehensive information about alternatives, our Worcester Bosch boilers section provides detailed comparisons of various heating solutions.
How Much Does A Glow Worm Ultimate3 Regular Open-Vent Boiler Cost?
So you're curious about the price tag on a Glow Worm Ultimate3 regular open-vent boiler?
For a 25kW unit, you're looking at around £725 including VAT, while the 30kW version runs about £900. If you need the beefier 35kW model, expect to pay an additional £50-£75 on top of that.
Installation costs usually fall between £500-£700, plus about £300 for sundries like filters and flues.
Glow Worm Ultimate3 Regular Open-Vent Boiler Warranty and Service Support
Peace of mind comes standard with the Glow Worm Ultimate3 regular open-vent boiler, thanks to its extensive 5-year warranty covering both parts and labour.
You can extend this coverage to 10 years when you choose a Club Energy partner for installation and add a Glow-worm Power Filter.
Your warranty kicks in after you register within 30 days of installation by a Gas Safe registered engineer.
It's a bit like getting your new car serviced at the dealership – repairs must be done by Vaillant Service engineers to keep the coverage valid.
Annual servicing starts at £120 and includes a thorough 12-point check by factory-trained experts.
You'll also get access to a dedicated warranty repair hotline and helpful online resources, plus support for the nifty MiGo app control system.
Final Verdict
After thoroughly evaluating the Glow Worm Ultimate3, we've found it hits the sweet spot between performance and value.
With 89.6% efficiency and a price tag around £870, you're getting impressive bang for your buck.
The 25kW output and compact design make it ideal if you're looking to heat a small to medium-sized home efficiently.
You'll appreciate its user-friendly LCD display and compatibility with the MiGo app for modern control options.
While it mightn't have all the bells and whistles of premium brands, it delivers where it counts.
The 5-year warranty (extendable to 10) provides peace of mind, and its aluminium heat exchanger promises reliable performance.
If you're after a solid, cost-effective boiler that'll keep your home cosy without breaking the bank, the Ultimate3 is worth your consideration.
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