Renewal Energy advise for BristolSolar Thermal

During the summer months a typical solar hot water collector can supply 80-100% of your hot water needs, however this will be considerably less in the winter months. The overall contribution to hot water demand is approximately 50-60%.  In order to get the most out of a solar thermal installation you need three to four square metres of southeast to southwest facing roof, which receives direct sunlight for the main part of the day. You’ll also need space for an additional water cylinder.

The typical installation cost for a domestic system is around £4,800. Installing solar thermal hot water could save you up to £50 per year on your hot water bills


Air Source Heat Pumps

Technology best suited for modern well-insulated homes using underfloor heating, and if installed correctly is highly efficient, however it is unsuitable for many older types of houses.  There are a few key questions to consider when deciding if a heat pump is suitable for you…

Location: You’ll need a place outside your home where a unit can be fitted to a wall or placed on the ground. It will need plenty of space around it to get a good flow of air. A sunny wall is ideal.

Is your home well insulated?  Air source heat pumps work best when producing heat at a lower temperature than traditional boilers, it’s essential that your home is insulated and draught proofed well for the heating system to be effective.

What fuel will you be replacing?  The system will pay for itself much more quickly if it’s replacing an electricity or coal heating system. Heat pumps may not be the best option for homes using mains gas.

What type of heating system will you use? Air source heat pumps perform better with underfloor heating systems than with radiator-based systems because of the lower water temperatures required.

Is the system intended for a new development?  Combining the installation with other building work can reduce the cost of installing the system.

Installing a typical system costs around £6,000 to £10,000. Running costs will vary depending on a number of factors – including the size of your home, and how well insulated it is, and what room temperatures you are aiming to achieve