Frequently asked questions

We have taken the questions we're asked most frequently at our Call Centre and answered them here for quick and easy reference.

FAQ Categories

All questions (52)

  • What size boiler do I need?

  • How long does it take to fit a boiler?

  • Are there restrictions as to where boilers can be sited?

  • Do boilers require ventilation when installed in a compartment such as a cupboard?

  • What is the maximum equivalent length of a boilers flue?

  • Can 90-degree bends be used on vertical flue systems?

  • Does the system need an automatic by-pass valve?

  • Will turning my water off affect my boiler?

  • How do I adjust the temperature when the water is too hot?

  • Should I turn my boiler off at night?

  • Do Alpha boilers have a pump overrun feature?

  • Do Alpha boilers have built-in frost protection?

  • Can I fill a system with softened water?

  • Do solar power systems work when the sun isn't shining?

  • How often do I need to top up the pressure in my heating system?

  • Why is system cleaning important?

  • How do I prevent or remedy a frozen condensate pipe?

  • How often should I have my boiler serviced?

  • Is my central heating system covered by the boiler's guarantee?

  • What is a condensing boiler?

  • What is a high efficiency boiler?

  • How are high efficiency condensing boilers more efficient than standard efficiency boilers?

  • What is a combination boiler?

  • What is a system boiler?

  • What is a conventional boiler?

  • What is a hydrogen-ready boiler and do I need to get one?

  • What is carbon monoxide poisoning?

  • How long does a boiler last?

  • How are high efficiency condensing boilers more efficient than standard efficiency boilers?

  • What should I do with my old boiler if I have a new one fitted?

  • I am extending my home - will I need a new boiler for the new section of the house?

  • Will a heat pump save me money?

  • Is my home suitable for a heat pump?

  • How large is a heat pump and where does it need to be placed in terms of planning, connections and aesthetics?

  • Are there different types of heat pump?

  • What is a heat pump - and how does it work?

  • Are heat pumps noisy?

  • Does a heat pump need regular and/or specialist maintenance?

  • Do I have to keep the heating on all day if I have a heat pump system?

  • Will a heat pump provide hot water as well as heating?

  • Will my heating controls work the same way with a heat pump system as they do with a gas boiler?

  • Do I have to get rid of my gas/LPG/oil boiler altogether if I install a heat pump?

  • If I change my old boiler for a new one, how much can I expect to save?

  • Where can I find out about grants for home heating?

  • How much can I save by reducing my heating and water temperatures?

  • How can I save money on my heating bill?

  • What do I do if my radiators are cold?

  • Why has my hot water stopped?

  • What do the lights mean on the front of the boiler?

  • My system comes on during the night or in cold weather when not asked for?

  • My central heating does not work and my boiler is brand new?

  • What do I do when the A and B lights on the boiler are flashing alternately?

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