Why Install an Unvented Hot Water System

10 November 2015
 Categories: , Blog

You might be thinking about installing a new, or modifying an existing, hot water system to supply mains pressure warm water at your faucets. This system is also referred to as pressurized hot water, and you stand to profit from having balanced cold and water supplies. It is advantageous for larger homes where there are several bathrooms that may be used concurrently, although it benefits smaller homes as well. If you are thinking of installing a new unit or upgrading your old hot water system, then consider unvented hot water system installation. Read on to find out why.

Open vented hot water systems

Generally, there are two main types of central heating hot water systems: open vented and unvented systems. Open vented hot water systems are the traditional hot water systems that were the predecessors of unvented systems. A hot and cold water boiler is typically set up in the loft, because the system needs to be at least 1 meter off the radiators in order for the heating to function.  Cold water is hoarded in one cylinder and supplied to the hot water boiler; which features an open vent tube to discharge steam into the air. Some of the disadvantages of the open vent hot water system include noisiness and the propensity of the pipes and boilers to freeze due to its positioning in the loft. Further, there's also the danger of water contamination as well as erratic water pressures and temperature oscillations.

Unvented hot water systems

Ever since their introduction on the market, unvented systems have tremendously increased in popularity among many householders. The unvented system lacks the cold water boiler and the potted hot water cylinder is alternatively fed straight from the cold water mains. Generally, unvented systems are available in two main types:

  • Indirectly heated unvented hot water systems: They are usually connected to a conventional heat source including solar panels or a boiler. It is by far the most popular kind of unvented system due to its ease of installation when upgrading rundown central heating systems.
  • Directly heated unvented hot water systems: These are powered by gas, oil or electric sources directly and are largely used in brand new households.

Benefits of unvented systems

An unvented systems delivers good water pressure that enables powerful and delightful showers, which in effect eliminates the need for a detached shower pump henceforth. It is faster and more energy efficient in regards to heating water. This saves on time and money on monthly energy expenses. It also saves on space, as you do not require a cold water tank stationed in the loft. Furthermore, there's less danger of frozen pipes. And last but not least, unvented systems are more hygienic compared to water collected in a tank or boiler, which runs a higher threat of contamination.

In conclusion, hire the services of a professional engineer for your unvented hot water system installation, as they will make certain that your system complies with the electrical regulations as well as water bylaws.