Combi boilers are the most common type of boiler in a typical domestic property. They're a single unit which provides water for hot taps and showers, as well as central heating. Cold water is taken from the mains and heated within the boiler unit. They're easy to install and often have high water pressure, as they rely on the water pressure from the mains supply.
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Combi boilers don't rely on water tanks, making them ideal for smaller houses and flats which have less space. Because water is heated by the boiler itself, you get hot water on demand ' no worrying about the hot water running out when you're showering! New gas combi boilers can also be up to 98% efficient, meaning only 2% of the energy you're paying for is wasted.
While combi boilers are best suited to smaller homes, they may not be ideal for larger properties with multiple bathrooms or those with high hot water demands. This is because they heat water on-demand instead of storing it. And, if you're in an area with low mains water pressure, you may be better off with a system or heat-only boiler, as these will likely provide higher water pressure.
Heat-only boilers, also called regular boilers, are made up of three parts: the boiler, a hot water tank, and a cold water tank. They provide hot water to radiators and the two tanks which send water to taps or showers. They're compatible with solar panels, and can also be fitted with an immersion heater meaning you can get hot water if your boiler fails.
If you have a larger property with many bathrooms or use a lot of hot water, heat-only boilers are a better option. They have a consistent supply in the tank and don't rely on water pressure from the mains supply. If you have low mains water pressure, a regular boiler is ideal because you'll have a consistent supply from the tanks. At Toolstation, you'll find our heat-only boilers are electric powered.
The main consideration with heat-only boilers is how much hot water you use ' if you use a lot, you could run out and need to wait for it to heat up again. If you don't use much, heating up water that may not be used could be a waste. Installation can also be complex because there's lots of pipework ' and the tanks require much more space and limit installation options.
A system boiler is essentially an updated version of a heat-only boiler, and made up of a boiler and a hot water tank. Rather than storing cold water in a separate cold water cistern, it's instead supplied to the boiler via the mains. You can get hot water on demand and heat your radiators using the hot tank. System boilers are also compatible with solar thermal ' energy created from solar panels.
System boilers are ideal for properties with multiple bathrooms that may be using hot water at the same time, as you won't struggle with low water pressure. And, because you don't need to worry about a cold tank, and most components are found within the boiler, installation is more flexible.
If you have an older central heating system, modern system boilers may be too powerful ' as the system may struggle with higher pressures. These boilers may not be suitable if you live in a small terrace or flat, because you need room for the hot water tank. And like regular boilers, once the hot water has run out you'll need to wait for it to heat up again.
Most boilers in UK domestic properties are gas powered. These boilers are connected to the gas supply via the national network and offer a convenient and reliable method to heat a home.
Gas is often cheaper than other types of fuel such as electricity, making it a more financially viable option ' especially with the UK cost-of-living crisis and energy bills continuing to rise.
Whilst choosing gas as your boiler fuel may have lower monetary cost, it does come with an environmental cost ' as these gases release carbon emissions into the atmosphere. Not only this, but gas as a fuel isn't 100% efficient ' at least 2% of the gas will be wasted, but this can go up to 30% for older boiler models.
Electric boilers are ideal for small properties, and larger energy-efficient buildings, such as new-build three-bed semi-detached homes. These are ideal if the building cannot be connected to gas, or for high-rise flats, and are very easy to install with no flue to consider.
Electric boilers are 100% efficient ' meaning no energy is wasted whatsoever ' and they don't rely on combustion so there's no risk of a hazardous gas leak. Because of this, they don't need annual servicing by a gas safe engineer ' meaning you'll be saving money on check ups!
When choosing an electric boiler, you need to make sure you pick the perfect size for your space. Choosing a boiler that's too small will mean it'll work too hard ' and as electricity tends to come at a higher cost than gas, you may end up spending more money and won't benefit from their efficiency. As electric boilers rely on a strong electrical connection, they may be less suited to homes with old wiring and lower voltage.
LPG stands for Liquefied Petroleum Gas, which is transported and stored in gas canisters near the boiler. These boilers are cheaper to purchase compared to oil and gas, around half the cost.
They're also more compact, making them suitable for smaller homes.
Like oil, LPG needs to be stored in a tank nearby, and replacement fuel has to be ordered regularly ' meaning you'll need to keep a close eye on your usage. And whilst the cost of the boiler is lower, LPG is more expensive per kWh than oil and gas ' so it'll be pricier over time.
When it comes to brewing great-tasting tea and coffee, every drop counts. That's why we've designed our Zojirushi water boilers for maximum efficiency and convenience so that you can have the hot water you need at the touch of a button. If you're looking for a water boiler to add to your home or office, or want to know more about our lineup, look no further! In today's guide, we'll go through all of our water boiler models and their functions ' from Café Drip Mode to Quick Temp Modes ' to help you choose the best hot water heater for you.
The Basics
First, let's go through some basics so that you can understand how our hot water heaters are labeled and categorized:
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The Features
Now we'd like to show you all of the features that make our water boilers uniquely Zojirushi. All of our hot water heaters will include the below, no matter the model:
That's a lot of great features, right? Now, let's get into the different models to see which hot water dispenser is best for you.
The Models
First, we'd like to introduce you to the Vacuum-Electric Hybrid (VE Hybrid). VE Hybrid models use less electricity to keep water warm and feature quick temp modes to reduce heating times and electricity. There are currently two VE models in our lineup:
VE Hybrid Water Boiler & Warmer CV-JAC40/50
What makes this model unique is all of it's features! It has 4 Quick Temp modes and four Keep Warm settings: 160°F, 175°F, 195°F, 208°F, a 930-Watt high powered heating element along with its energy-saving timer function that lets you time your hot water out from 6-16 hours out (that's more than half a day!). Lastly, note that this model has an easy-to-clean nonstick coated stainless steel interior, and comes in a classy Stainless Black color.
VE Hybrid Water Boiler & Warmer CV-DCC40/50
This model also has four Keep Warm settings (160°F, 175°F, 195°F, 208°F), but three quick temp modes: 160°F, 175°F, or 195°F. The energy-saving timer function can be set from 6-10 hours, and the exterior is stainless steel, with a non-stick interior. This model comes in a Stainless Dark Brown color.
Next up are our Micom models.
Micom Water Boiler & Warmer CD-NAC40/50
Panorama Window® Micom Water Boiler and Warmer CD-LFC30/40/50
Micom Water Boiler & Warmer CD-WCC30/40
Micom Water Boiler & Warmer CD-WHC40
Micom Super Boiler CW-PZC22/30
Lastly, we have our commercial water boiler, which is ideal for restaurants, office, or tea houses:
'Commercial' Water Boiler & Warmer CD-LTC50
The Zojirushi Difference
At Zojirushi, we're committed to delivering thoughtfully designed appliances that fit perfectly into your everyday needs. For example, all of our Zojirushi water boilers are equipped with a descaling mode, which makes it easier to clean and maintain your water boiler at the touch of a button.
Many of our water boilers also have an easy-to-hear indicator sound, which you can set to fun melodies or beeps that ring when the water is at a boil or is at a low water level. Best of all, Zojirushi water boilers can be set from 6-16 hours, extending the time for your convenience.
Contact us to discuss your requirements of Vacuum Boilers. Our experienced sales team can help you identify the options that best suit your needs.