Heat Only Boilers
The heat only boiler, also known as a traditional system, regular, open vented, back boiler or conventional boilers, are comprised of both a hot water cylinder and a cold-water storage tank. Heat only boilers are the birth place of most modern heating systems. There are recordings of this type of system as far back as the 18th century.
Modern heat only boilers can heat your home very efficiently. The heat only boiler uses a cold-water storage cistern with two feeds, one for hot water and one for cold water. This means heat only boilers do not lose pressure and fail, but you would need to keep an eye out if leaks started appearing on your radiators or hot water pipes. The water is pumped through the pipework to which will either be heated up stored hot water or diverted to your central heating system whether they be radiators or underfloor heating. The hot water feed will then be pumped around your home to keep it warm.
Although they’re not the best option if space is at a premium, a heat only boiler is able to supply large volumes of hot water to multiple bathrooms, making them a great choice for larger households. The choice of zoning the property also makes them a great choice. It’s probably best to remember that this sort of unit is best suited to homes which already have traditional heating systems in place. Your pipework may not need changing at all, but if it does, any changes are likely to be minimal.
Like system boilers, they can be used in conjunction with solar heating systems, helping you to reduce your energy bills and ecological footprint. Heat only boilers are also the quickest and cheapest to change in the event of a total boiler failure, as well as on going maintenance being cheaper due to most parts being external and easier to access.
Advantages of a Heat only boiler:
- Can supply water to multiple bathrooms and taps at the same time
- Ideal for homes in areas with low water pressure
- Can boost hot and cold-water systems
- Compatible with solar thermal systems, making them a very energy-efficient option
- Cheapest type of boiler to change in the event of total failure
- Compact kitchen cupboard size
Disadvantages of a Heat only boiler:
- Usually lower warranties on the boiler
- Hot water isn’t available on demand and may need time to warm up
- Installation can be more expensive and complicated due to the need to install both a cylinder and a tank
For us the Heat only or Traditional boiler is the most robust system, providing you have the space for the cold-water tanks and the hot water tank. The only real down side is the running cost on a smaller installation.
We would always recommend a magnetic filter and water softener is installed with a heat only boiler.