Expert HVAC Contractors in Hawick

5 Simple Steps to Maximise your Boiler Efficiency and Save Money. 1. Ensure your System Pressure is Correct. (This is normally around 1 Bar when cold, but do refer to your boiler user manual.) 2. Bleed your Radiators. If you find you have cold spots at the top of any radiators, this is an indication that there is air in the system. They need bled to remove the air and maximise their heating potential. (see the links section for a how-to video.1) 3. Optimise your Boiler Heating & Hot Water Flow Temperatures. If you have a modern condensing combi boiler, then the lower this temperature the more efficient it will be. 4. Keep your Boiler Regularly Serviced. This will keep your boiler working at its optimum efficiency, reduce costly repair bills with preventative maintenance and ensure you maintain your boiler warranty. 5. Consider Upgrading your Boiler Controls. Smart Controls (with OpenTherm) can save you up to 19% on your energy usage. Even for older boilers, smart controls can reduce gas usage. 3 Videos 1. How to Bleed your Radiators.