Worcester Boilers 🔥

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Last Updated on 24th June 2024

Best Worcester Bosch Boilers in the UK for 2024

Worcester Bosch boilers. From compact models ideal for small spaces to powerful systems for larger homes, we've got all the details you need to make an informed choice.

Are you in the market for a new boiler and not sure where to start? Dive into the essentials and find out which Worcester Bosch boilers stand out in the UK. With their reputation for reliability and efficiency, it's no wonder they're a top choice for many homeowners.

What's the best boiler for your home? Let's get you started with the perfect boiler for your heating needs! 😊

Key Takeaways

🌟 Discover the best Worcester Bosch boiler for your home - from the powerful Greenstar 8000 Life to the compact Greenstar i!
🏡 The best space saving Worcester boiler with the Greenstar i or Compact, fitting snugly in your kitchen cupboard.
💸 Get efficient heating with the best budget boiler... the Worcester Bosch 2000 - affordable and reliable!
🛢️ Go for the best worcester oil boiler with the Heatslave II and enjoy smart features and solar compatibility.
⚡ Slash your energy bills with the most efficient of Worcester Bosch's boilers , 92-94% efficient boilers like the Greenstar 4000 and CDi Classic.
🏆 Get an instant online quote today and upgrade to a Worcester Bosch boiler for unbeatable comfort and efficiency!

ModelBest ForKey FeaturesImage
Greenstar 8000 LifeMost homes- Powerful up to 50kW
- Wireless connectivity
Greenstar 8000 Life
Greenstar 8000 StylePower hungry homes- Up to 50kW & 20.3 l/min flow rate
- Sleek modern design
Greenstar 8000 Style
Greenstar iMedium sized homes- Compact, wall-mounted
- Durable heat exchanger
Greenstar i
Greenstar Highflow CDiLarge homes- Designed for properties with high hot water demands
- Flow rates up to 25 l/min
Greenstar Highflow CDi
Greenstar Si CompactSmall homes- Compact size fits in cupboard
- Low energy pump reduces electricity use
Greenstar Si Compact
Greenstar 4000All-rounder- 'Quick Tap' water-saving function
- Quiet operation at 45dB(A)
Greenstar 4000
Greenstar 2000Budget option- Compact, fits in cupboard
- Quiet operation at 45dB(A)
Greenstar 2000
Heatslave IIOil combi- Outdoor weatherproof cabinet
- One-piece stainless steel baffle
Heatslave II
Greenstar CDi CompactSpace saving- Fits in kitchen cupboard
- ECO mode for efficiency
Greenstar Compact
Greenstar CDi ClassicVersatility- Combi & system options up to 42kW
- Fits in kitchen cupboard
Greenstar CDi Classic


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worcester bosch boiler model greenstar 8000 life

Worcester Bosch Greenstar 8000 Life

Best Worcester boiler for most homes

The Worcester Bosch Greenstar 8000 Life is a fantastic bit of kit with performance that's hard to beat! It's billed as the most powerful Worcester combi boiler so you can trust this boiler to keep you warm during those chilly British winters.

This model comes in several varieties with output options including 30kW, 35kW, 40kW, and 45kW. So, you can really find one that suits your specific home and needs. It's a direct descendant of the Greenstar CDi, which means it’s lineage is packed with features and new improvements.

One thing you'll love about the Greenstar 8000 Life is its modern design. It's got a stunningly sleek, stylish appearance, perfect if you like things just so. Plus, it boasts upgraded controls and wireless connectivity, making it super easy to operate.

The price range for this boiler falls between £1,800 to £2,400 making it a bit of an investment, but the efficiency and long-term savings can make it worth the cost.

Output Options30kW, 35kW, 40kW, 45kW
Price Range£1,800 - £2,400
GuaranteeExtended with Accredited Installer

Pros Cons
  • Powerful performance: high output options (30-45kW)
  • Modern design: upgraded controls
  • Wireless connectivity
  • Long lifespan: 15-18 years with servicing
  • High water flow rates
  • Extended guarantee: with accredited installer
  • Reputable brand
  • Higher upfront cost: £1,800 to £2,400
  • Reported issues: slow to reach high fire mode
  • Potential cycling issue: between heating and hot water modes
  • Limited purchasing options: only through suppliers
Remember, if you get it fitted by a Worcester Bosch Accredited Installer, you can also benefit from an extended guarantee.

worcester bosch boiler model greenstar 8000 style

Worcester Bosch Greenstar 8000 Style

Best Worcester boiler for power hungry homes

The Worcester Bosch Greenstar 8000 Style is designed to handle large homes with ease! And, damn! is it one snazzy boiler! It's got that modern look and some super impressive features.

With a hot water flow rate of up to 20.3 litres per minute, it’s in a league of its own. Got two bathrooms? No problem! This boiler can handle them both without a hiccup.

Worcester Bosch themselves tout the 8000 Style's advanced design and superior connectivity. You can control it from your phone. Smart technology at its best!.

And oh, did I mention the warranty? You get up to 12 years! That's right—twelve. You’re practically covered for an eternity in boiler years.

Hot water flow rateUp to 20.3 litres per minute
ConnectivitySmart technology, control via phone
WarrantyUp to 12 years
DesignModern, sleek

Pros Cons
  • High hot water flow rate: up to 20.3 litres/min
  • Powerful output options: 30kW to 50kW
  • Stylish design: curved corners, white or black casing
  • Long warranty: up to 12 years with accredited installer
  • High efficiency: 94%, ErP A rating for heating and hot water
  • Higher upfront cost: compared to some competitor models
Did you know this boiler has the highest water flow rate of any wall-hung combi boiler on the market? 🚀 That should keep your home warm and cosy!

worcester bosch boiler model greenstar i

Worcester Bosch Greenstar i

Best Worcester boiler for medium sizes homes

The Worcester Bosch Greenstar i is a seriously popular choice in the UK. It’s compact and wall-mounted, fitting easily into your home without taking up too much space.

Designed for ease of installation, the Greenstar i is also efficient. It’s perfect for small to medium-sized homes.

What’s more, it’s got compatibility with smart thermostats – you know, like the Nest or Hive – which means you can control your heating from your phone.

You'll find this model in two power outputs: 27kW and 30kW.

Plus, it comes with a steel wall-mounting jig, allowing you to pre-pipe all the pipework behind it.

Let’s not forget, it’s classified as an A-rated boiler for energy efficiency. Winning all round!

If you need more info, check out the Greenstar i System 27kW and 30kW on the Worcester Bosch site.

Pros Cons
  • Compact size: suitable for small spaces like cupboards
  • Durable heat exchanger: stainless steel, especially good for hard water areas
  • Quality aftercare: access to Worcester Bosch's 5-star service
  • Easy maintenance: well-designed layout for simple part replacement
  • Affordable price: budget-friendly compared to higher-end Worcester models
  • No rear pipe access: requires optional bracket that adds depth
  • Shorter warranty: 5 years vs 10 years on premium models like Greenstar 4000
  • Blockage risk: smaller waterways may clog more easily when converting older systems
  • Lower modulation ratio: 1:5 vs up to 1:10 on higher models, reducing efficiency
Worcester Bosch has been a trusted brand since 1962. Yep, it’s a classic British institution! 🇬🇧

worcester bosch boiler model greenstar compact

Worcester Bosch Greenstar Compact

Best Worcester boiler for space saving

The Worcester Bosch Greenstar Compact is one of our favourite condensing boilers. Perfect for homes of all sizes, it fits right inside standard kitchen cupboards, making it a discrete choice. If your home has one or even two bathrooms, this compact marvel will keep up with your hot water needs effortlessly.

Imagine saving up to £800 per year on your energy bills! This isn't just idle talk. The Worcester Bosch Greenstar 36CDi Compact is A-rated, meaning top-notch efficiency. It's not only about energy savings—this boiler is one of the top choices in the UK, enjoyed by many households.

Customer satisfaction is another feather in its cap. According to a survey, Worcester Bosch boilers enjoy high reliability and customer satisfaction. So, your peace of mind is practically guaranteed with this boiler.

Pros Cons
  • Compact size: fits in a standard kitchen cupboard, saving space
  • Instant hot water: no separate tank or cylinder needed
  • Output options: 25kW and 30kW models suit apartments, bungalows and small houses
  • High efficiency: A-rated with over 90% efficiency, features ECO mode
  • Smart compatible: works with optional Worcester controls like the Wave thermostat
  • Frost protection: ideal if installed in a garage or loft
  • Slow bath filling on 25kW: 10.2 l/min flow rate, 30kW model recommended if you have a bath
  • Limited hot water: output may not suffice for larger homes with multiple bathrooms
Did you know Worcester Bosch boilers have even been used in royal households? Makes you feel a bit fancy, eh? 🏰😊

worcester bosch boiler model greenstar compact

Worcester Bosch 4000

Best all-rounder Worcester boiler

The Worcester Bosch 4000 is designed for efficiency and ease of use, it offers up to a 10-year guarantee when installed by a Worcester Accredited Installer.

This boiler comes in different power levels, such as 25kW and 30kW for combi styles, delivering hot water flow rates up to 12.3 litres per minute.

One of the key highlights is its compatibility with a 20% hydrogen blend. It’s future-proof, ensuring you won't be left in the cold anytime soon. A solid performer with top-notch reliability.

Here's a quick glimpse of its specs:

Power Range25kW, 30kW
Hot Water Flow RateUp to 12.3 litres/min
GuaranteeUp to 10 years (with accredited installer)
EfficiencyHigh, energy-efficient
Hydrogen CompatibleYes, supports 20% hydrogen blend
Pros Cons
  • Output options: 25kW and 30kW models suitable for small to medium homes
  • High efficiency: A-rated with 94% ErP rating
  • High modulation ratio: reduces output to just 10% to match demand and increase efficiency
  • 'Quick Tap' feature: provides instant hot water without delay or waste
  • Quiet operation: Quiet Mark accredited for low noise levels
  • Simple Switch program: allows easy upgrade from older Greenstar i boilers
  • Future-proof: hydrogen blend ready to adapt to future energy trends
  • Higher price: more expensive than the entry-level Worcester Bosch Greenstar 1000 range
  • Potential hot water limitations: 30kW model recommended for homes with 2 bathrooms, 25kW may not suffice for larger properties
  • Reported stock shortages: due to popularity and supply chain issues
  • Shorter guarantee: not as long as some other Worcester Bosch models like the 8000 Lifestyle
  • Less durable heat exchanger: aluminium not as robust as stainless steel ones in other ranges
Compatibility with a 20% hydrogen blend. It’s future-proof, ensuring you won't be left in the cold anytime soon. 🔥

worcester bosch boiler model 2000

Worcester Bosch 2000

Best budget Worcester boiler

The Worcester Bosch 2000 is a solid choice for those who want a reliable yet budget-friendly boiler. This model is a combi boiler, which means it’s designed to provide both heating and hot water without needing a separate water tank. Super convenient for smaller spaces, right?

This boiler comes in two sizes: 25kW and 30kW. The 25kW version is perfect if you have a one-bedroom flat with one bathroom. The 30kW version is better if you need a bit more oomph – maybe a small house with two bathrooms.

One of the standout features is its efficiency. The Worcester Bosch 2000 has an ErP Efficiency rating of 93%, which is pretty impressive for a budget model. 🌿 You’ll be saving on those pesky energy bills!

It’s worth noting that the Worcester Bosch 2000 is one of their quieter models. This means less noise pollution in your cosy home. A small, yet delightful bonus.

Price-wise, it’s quite the bargain. The price ranges from £850 to £950, making it a highly affordable option. Plus, it’s known for its easy installation. Many engineers have given it the thumbs-up, which is always reassuring.

Pros Cons
  • Compact size: 400mm x 724mm x 300mm, easily fits in a kitchen cupboard
  • Affordable: one of the most budget-friendly boilers offered by Worcester Bosch as an entry-level model
  • Quiet operation: just 45dB(a), won't disturb occupants even in a small home
  • Sleek design: contemporary look similar to the more expensive Greenstar 8000 models
  • Energy efficient: A-rated with a 93% seasonal efficiency rating for heating and hot water
  • Slower flow rate: 12 litres per minute, so filling a bath may take longer than with other boilers
  • Pressure limitations: as a combi boiler, not well-suited for homes in low water pressure areas without a booster pump
  • Limited options: only available as a combi boiler, no system or regular versions of this model
  • Mixed components: uses parts from many different manufacturers, may not be as optimized as boilers made completely by one company
  • Basic features: as an entry-level model, lacks some of the advanced specifications of Worcester Bosch's higher end boilers
Quiet operation 🤫 just 45dB(a), won't disturb occupants even in a small home!

worcester bosch boiler model heatslave II in internal and external models

Worcester Bosch Heatslave II

Best Oil combi Worcester boiler

The Worcester Bosch Heatslave II is the UK's most popular oil combi boiler. It's got a sleek, modern design that suits small, medium, and large homes with one or two bathrooms.

This boiler has a flow rate of up to 22 litres per minute. It's equipped with a one-piece stainless-steel primary baffle and a cross-firing burner.

For tech lovers, it features the next-generation Heatronic 4i digital control. It’s even compatible with smart devices and solar thermal! The boiler’s weatherproof variant, the Heatslave II External, is as robust as they come.

From a practical perspective, you’ll appreciate the easy access connections. Now, let's look at some specific numbers:

Flow RateUp to 22 litres per minute
Heating Output18kW, 25kW, or 32kW
Dimensions855mm (H) x 520mm (W) x 600mm (D)
Price Range£2,200 - £2,500
Warranty2 years standard
Pros Cons
  • Outdoor installation: frees up space inside the home
  • Output options: 18kW, 25kW and 32kW models suit small, medium and large homes with 1-2 bathrooms
  • High efficiency: 90-91% rating and A-rating for heat helps reduce energy bills
  • Compact and robust: 950 x 640 x 770mm (HxWxD) in a green powder coated cabinet to protect from the elements
  • Fast hot water: 15 l/min for 18kW, 18 l/min for 25kW, and 22 l/min for 32kW models
  • Frost protection: prevents freezing during cold weather
  • Child-safe controls: concealed in a slide-open drawer, ideal for homes with young children
  • Smart compatible: works with optional intelligent heating controls for added efficiency and comfort
  • 'Keep hot' function: ensures instant hot water availability
  • Renewable compatible: can accept pre-heated water from sources like solar to further reduce fuel bills
  • May requires outdoor space: may not be suitable for all homes
  • Potentially higher running costs: oil boilers can be more expensive to run than gas boilers
  • Shorter warranty: 2 years, although 5 year warranty available on primary heat exchanger
  • Hot water limitations: as a combi boiler, may not suit larger homes with multiple bathrooms due to flow limits
  • Higher upfront cost: more expensive than an equivalent gas boiler, with prices from £2,403 to £2,727 excluding installation
Did you know Worcester Bosch is a favourite amongst heating engineers? They consistently rank highly for reliability.

worcester bosch boiler model highflow CDi

Worcester Bosch Greenstar Highflow CDi

Best Worcester boiler for large homes

Looking for a powerhouse? The Worcester Bosch Greenstar Highflow CDi is just what you need! This floor-standing combi boiler is known for its top-notch hot water flow rates, delivering up to 25 litres per minute—a right champion for large homes with multiple showers and taps.🏡

One brilliant feature is its compatibility with a 20% hydrogen blend, making it a forward-thinking choice for future energy needs. Plus, it’s designed for straightforward installation. I mean, who wants a complicated set-up, right? The pre-plumbing jig and wheel-in tray make it a doddle to slide into place.

Picture this: it can comfortably handle the hot water demands of a big family without breaking a sweat. So if you’ve got the whole tribe at home, this one’s for you. This boiler ticks all the boxes—efficiency, high performance, and ease of use.

Pros Cons
  • Ideal for larger homes: designed for properties with higher hot water demands, such as those with multiple bathrooms
  • Powerful output options: available in 29kW and 30kW models to meet the heating and hot water needs of bigger homes
  • High hot water flow rates: 20 litres per minute for the 29kW model and 25 litres per minute for the 30kW model
  • Simultaneous hot water supply: can provide hot water to multiple taps or showers at the same time without a significant drop in pressure or temperature
  • Suitable for larger systems: can supply up to 3 bathrooms and 18 radiators
  • Energy efficient: A-rated with a SAP seasonal efficiency rating of 89.2%
  • Compact size: 760 x 440 x 360mm dimensions allow it to fit in a standard kitchen cupboard
  • Smart compatible: works with the full range of Worcester Bosch controls, including smart options like the Wave
  • Extended warranty: 5 year guarantee as standard, can be increased to 10 years when installed with a Worcester Bosch Greenstar System Filter
  • Higher price: more expensive than standard combi boilers due to the higher kW output and flow rates
  • Increased gas requirements: requires a higher capacity gas supply and larger gas pipe sizes compared to regular combis
  • Potentially higher running costs: may be more expensive to operate than a standard combi due to the higher gas consumption to meet hot water demands
  • Not suitable for small homes: the high output would be unnecessary for properties with only 1 bathroom
  • Requires larger installation space: needs a big cupboard or area for installation due to the larger dimensions compared to a standard combi
  • Reported component issues: some users have experienced problems with the diverter valve and PCB, although these are usually covered under warranty
The pre-plumbing jig and wheel-in tray make it a doddle for any boiler installer 👌

worcester bosch boiler model CDi classic

Worcester Bosch Greenstar CDi Classic

Best Worcester boiler for versatility

The Worcester Bosch Greenstar CDi Classic is a solid choice for those looking for reliability and efficiency. This model is known for its high energy efficiency—with an ErP rating of A. That means it’s pretty darn green and cost-effective.

You’ll find that this boiler fits neatly into a standard kitchen cupboard. It’s compact yet packs a punch with a central heating output of 30kW and hot water output of 38kW. It can comfortably handle 12 to 14 radiators, making it ideal for medium to large homes.

Here’s a quick look at the specs to give you a better idea:

ErP RatingA
Energy Efficiency92%
Central Heating Output30kW
Hot Water Output38kW
CompatibilityCan be used with smart thermostats
Installation CostApprox £2,500 including VAT and fees
Pros Cons
  • Versatile options: available in both combi and system boiler types to suit different heating setups
  • Powerful combi outputs: 34kW and 42kW models suitable for medium to large homes
  • High demand system option: 30kW system boiler ideal for homes with high hot water demands
  • Energy efficient: A-rated with a SAP seasonal efficiency rating of 89.8% helping to reduce fuel bills
  • Compact size: fits in a standard kitchen cupboard - 760 x 440 x 360mm for both combi and system models
  • High flow rates: 14.3 l/min for the 34kW combi, 17.2 l/min for the 42kW combi, and 25 l/min for the 30kW system
  • Easy to install: low lift weight of 47.5kg for easier handling compared to some older models
  • Smart compatible: works with a range of Worcester Bosch controls including smart options like the Wave
  • Extended warranty: 5 year guarantee as standard, can be increased to 10 years when fitted with a Worcester Bosch Greenstar System Filter
  • Simplified servicing: magnetic catch and hinged control panel door for easy access during maintenance
  • Potential flow limitations: combi flow rates may not be sufficient for larger homes with multiple bathrooms
  • Requires extra components: system boiler needs a separate hot water cylinder which adds to cost and space requirements
  • High prices: can range from around £1,200 to £2,000 for the boiler only, excluding installation costs
  • Complex installation: important to use a Gas Safe registered installer
  • Reported component issues: some users have experienced problems with the diverter valve on combi models
  • Compatibility limitations: older CDi Classic models may not be compatible with the latest smart heating controls
  • Expensive spare parts: replacement components can be costly as the CDi Classic is a premium range
34kW and 42kW models suitable for medium to large homes🏡

worcester bosch boiler model si compact

Worcester Bosch Greenstar Si Compact

Best Worcester Boiler for small homes

The Worcester Bosch Greenstar Si Compact is a go-to choice for many homes in the UK.

It's rated for small to medium homes with one bathroom. The Worcester Bosch Greenstar 30Si Compact combi boiler has an “A” energy rating, ideal for those looking to save on energy bills.

Besides, this boiler is known for its reliability, with a standard warranty of up to 10 years. That means fewer worries for maintenance.

One standout feature is its low energy pump. It's quieter, and also helps keep electricity consumption lower.

Overall, this makes it a strong pick for small families who value efficiency.

Compact yet powerful, fitting snugly into your kitchen cupboard!

Why Choose Worcester Bosch Boilers?

Worcester Bosch boilers are a popular choice for many homeowners due to their efficiency and reliability. They offer great value by saving on energy costs and ensuring a long-lasting product.

Energy Efficiency

Worcester Bosch boilers are known for their impressive energy efficiency. Many models, such as the Greenstar 4000, boast an efficiency rating of up to 94% and an ErP A-rating. This high efficiency means they convert nearly all the fuel they use into heat, reducing waste and cutting down on energy bills.

ModelEfficiency RatingErP Rating
Greenstar 400094%A
Greenstar 30i93%A

Such efficiency contributes to lower running costs, and it’s also beneficial for the environment! Worcester Bosch's boilers are designed to ensure you get reliable heat and hot water whilst keeping your energy usage as low as possible.

Reliability and Durability

When it comes to reliability, Worcester Bosch boilers won’t let you down. They have a strong reputation for durability, often lasting well over 15 years with proper maintenance. It’s one reason why customer satisfaction ratings for Worcester Bosch are notably high, with many users recommending them.

Still, it’s not just about longevity. These boilers require less frequent repairs, which saves you money and inconvenience in the long run. Moreover, Worcester Bosch offers excellent customer service and warranties, giving you peace of mind that any issues will be handled promptly.

Customer SatisfactionWarranty Period
HighUp to 10 years

Comparing Worcester Bosch Boilers

The main types of Worcester Bosch boilers include Combi and System boilers. Each type has unique features and benefits, so let’s dive into the details.

Combi Boilers

Combi boilers are popular for their compact size and efficiency. They combine both central heating and hot water in one unit, which means you don’t need a separate water tank. The Worcester Bosch Greenstar 2000 is well-known for its quiet operation, with noise levels around 45dB! You can pick from 25kW or 30kW models, based on your needs.

Key Features:

ModelOutputNoise LevelEfficiency
Greenstar 2000 25kW25 kW45dB93%
Greenstar 2000 30kW30 kW45dB93%

Combi boilers are ideal for smaller homes with less space. The instant hot water feature means you won't wait long when you turn on the tap. Plus, they’re energy-efficient, which can lower your energy bills. Don't you just love when things are that straightforward and efficient?

System Boilers

System boilers cater to homes with higher hot water demand. They require a hot water cylinder but no cold water tank, making them more efficient than Regular boilers. The Worcester Bosch System boilers provide strong water pressure which is suited to larger homes with more than one bathroom.

Key Features:

ModelHot Water Cylinder RequiredPressure
Greenstar 18i SystemYesHigh
Greenstar 24i SystemYesHigh

System boilers ensure you have a good flow of hot water to multiple taps simultaneously. They keep large households running smoothly during busy mornings. And let’s face it, who wants to experience the frustration of a cold shower on a winter day?

Frequently Asked Questions

What are the best Worcester boiler models?

The top recommended Worcester boiler models include:

  • Worcester Bosch Greenstar 8000
  • Worcester Bosch Greenstar 4000
  • Worcester Bosch CDi range

These models are known for their reliability, efficiency, and long warranties. The Greenstar 8000 is Worcester's newest and most advanced combi boiler.

How long do Worcester boilers typically last?

Worcester boilers have a reputation for longevity, with many lasting 15-20 years or more. Some key factors in boiler lifespan include:

  • Regular servicing and maintenance
  • Water quality and treatment to prevent corrosion
  • Frequency of breakdowns - consider replacing if repairs become too frequent

With proper care, it's not uncommon for Worcester boilers to provide reliable heat for 15+ years. Exact lifespan depends on the specific model and usage.

Are Worcester boilers worth the cost?

While Worcester boilers are on the higher end in terms of upfront price, most installers and homeowners find the cost justified due to:

  • High efficiency ratings that reduce energy bills
  • Extensive warranties up to 10-12 years on many models
  • Proven reliability and fewer breakdowns over time vs budget brands
  • Readily available parts and experienced installers familiar with the brand

So while the initial investment is higher, a Worcester boiler can provide better long-term value compared to cheaper, less reliable brands that break down frequently.

What if I can't afford a new Worcester boiler?

If the upfront cost of a new Worcester boiler is too high, some options to consider are:

  • Going for a lower-priced but still reliable brand like Ideal or Vaillant
  • Financing options like 0% credit cards or payment plans from some installers
  • Checking if you qualify for any government boiler grants or schemes
  • Continuing to repair your current boiler if it's still mostly reliable

Ultimately, it's important to balance short-term savings with the long-term costs and hassle of an unreliable boiler. Investing in a quality Worcester boiler can pay off over time.