Do condensing boilers need a water tank?

Space savings: a condensing combi boiler does not need a hot water tank and is available in a wide range of compact sizes, making it much suitable and convenient to fit in a kitchen cupboard than conventional boiler models.

Do you need a cold water tank with a condensing boiler?

Condensing boilers don't necessarily need a hot water tank or cylinder in order to work — that will depend on the type of boiler you have in your home. Combi boilers do not use a hot water tank, but heat only or system models do.

Can you have a boiler without a water tank?

Combi boilers work by heating water directly from the mains, so you don't need a hot water storage cylinder or cold water tank. This is ideal for smaller properties without airing cupboard or roof space.

What type of boiler needs a water tank?

A convention boiler or regular boiler is a type of boiler that has been around for many years. These need both a cold water tank and a hot water storage tank to operate.

Where does the water come from in a condensing boiler?

Condensate is what gets produced when your boiler is being used to heat your home or produce hot water. This is because when your boiler burns fuel, a chemical reaction causes produces carbon dioxide and water vapour by-products. Once enough heat is produced from this vapour, it's condensed back into water form.

Condensing Boilers

Does a condensing boiler need a drain?

A condensing boiler will produce about 2 litres of condensate an hour at an average temperature of 30-40℃. This condensate needs to drain into your waste water outlet or to a drain via your condensate pipe.

How much water should come out of a condensing boiler?

An efficient condensing boiler will generate around 2 litres of condensate water an hour at a temperature of around 30-40°c. This needs to be safely disposed of, within the buildings waste water system.

Why do I have a water tank and a boiler?

Generally, the device called a boiler is for heating water to heat the house. This is a closed system and does not supply hot water for the house. A device called a water heater is used to heat potable water for the house that is safe to drink and all other personal needs.

Why do new builds have water tanks?

In builds likely to experience high hot water demand, a hot water cylinder is often considered as essential. When choosing a heating system for a new build, housebuilders will already have an idea of how many bathrooms and rooms will be erected.

Do you need a cold water tank?

When it comes to the supply of water within most commercial and larger domestic properties, the cold water tank is an essential part of the system.

Do I need a water tank with a combi boiler?

One of the many benefits of a combi boiler is that you don't need a separate water tank to store hot water. A combi will only heat water as and when it's needed, making it an efficient and practical solution.

How does a condensing boiler heat water?

A condensing boiler runs on gas or oil and has been designed to help improve energy efficiency. This is done by converting water vapor condensation into heat; they're able to recover some of the lost heat from waste gases.

Do I need water cylinder with combi boiler?

Combi boilers heat water directly from the mains when you turn on a tap, so you won't need a hot water storage cylinder or a cold water storage tank in the roof space. They are also very cost-effective and energy-efficient as water is heated instantly rather than being heated and then stored in a cylinder.

What is the difference between combi boiler and condensing boiler?

They are ultimately the same thing. In fact, all modern boilers are condensing boilers, whether that be a combi, system or a regular boiler. You no longer need to be concerned about avoiding a non-condensing boiler, since legislation banned their sale in the UK back in 2005.

Are condensing boilers worth it?

The main reason why condensing boilers are better than non-condensing models is because of their increased energy efficiency. Before condensing boilers came along, up to 30% of a boiler's heat was essentially wasted because it went straight out of the flue pipe.

Do I need a water tank in the loft?

In many homes, a loft water tank is a necessary part of the home's plumbing system when there's no combi boiler in place to heat the home. However, if you're ready to convert your loft, an attic water tank can be a space-consuming hurdle within the overall conversion project.

Why do new houses not have combi boilers?

Under current government policy, from 2025, gas, oil and LPG boilers will be banned from installation within new build homes. This announcement came as part of government efforts to lower carbon emissions. For that reason, you may want to consider a renewable heating system.

Why do houses have hot water tanks?

Hot water cylinders (or as your might call them, hot water tanks) are used in homes to store hot water and keep it warm for that exact moment that you need it.

Why is all the water in my house cold?

Demand. Perhaps the most common reason for water to remain cold in a busy home is an empty tank. Water heaters work hard to heat an amount of water which fills the tank, but this tank has a limited capacity.

Can I get rid of my cold water tank?

You can now remove the old cold water storage tank to make room for the new one. If the tank is in your loft space and won't fit through the hatch, just move it to one side. You may need to have a professional contractor dismantle the tank for you at a later date.

How often should you top up a condensing boiler?

The pressure in the system will usually require topping up once or twice a year. If you are having to repressurise your heating system much more frequently, please contact your installer.

Can boiler condensate go into rainwater?

It is possible to terminate a condensate pipe into a rain water down pipe that terminates into the foul waste system. As with all externally-run condensate pipes, it is recommended to keep the external run to minimum and the pipe diameter to 32mm when exiting the property.

How do you make a condensate soakaway?

Prepare hole approximately 200mm wide x 400mm deep and a minimum of 500mm from adjacent wall to the centre of the hole. Place 10mm limestone chippings to a minimum depth of 50mm in the base of the hole on which to bed the SOAK1GR allowing for the top of the SOAK1GR to be either flush or just below ground level.

Can boiler condensate go into septic tank?

Why Boiler Condensate Should Not Enter Your Septic Tank. We've already covered this in a little detail above, but it is worth repeating – you should, under no circumstances, let boiler condensate enter your septic tank or waste system. That is, unless, you have a neutraliser. Boiler condensate is notoriously acidic.

Where do you drain a condensate pump?

The first and easiest option is to allow condensate to drain using gravity, from the drain pan to one of the following: main sewer drain line, floor drain, sump pit, laundry sink, window, or through the wall to the outdoors.