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central heating

A central heating system provides warmth to the number of spaces within a building and optionally also able to heat domestic hot water from one main source of heat. It is a component of heating, ventilation, and air conditioning (HVAC) systems, which can both cool and warm interior spaces.

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  1. G

    Help! - Noisy central heating system – not heating water well ……

    Hello ! I have recently moved into a new house – or rather a 1960s built house. The central heating system looks to be around 10-12 years old Its conventional mains gas boiler central heating system (not a combi) the boiler is an “Ideal logic 18” – with hot water tank in an upstairs airing...
  2. E

    Central heating doesn’t start heating for about 45 mins

    Hi, Been having a problem with our heating for a few weeks now. Heating is set on our Boilermate 2000 to come on at 5:15 but about 15 minutes later the radiators are still freezing cold with a small warm bit at the top. Another 15 minutes later and then it feels like hot water begins pumping...
  3. harpermin

    A number of radiators not heating up

    Hi Just looking for some suggestions on what to look for/try next. Up until last weekend, our oil fired boiler central heating was working fine, all radiators heating as required. We then had an issue of a mouse deciding to go for a exploration in our air intake and causing it to begin to soot...
  4. E

    Thermostat not reaching the temperature which I have set.

    . . . Honeywell CM927 Thermostat Ethos 54C (Condensing Combination Boiler) I set the Thermostat to 26°C (79°F). The boiler fires up and heats the home to 22.5°C (72.5°F), and then it stops. * The thermostat shows me it is currently 22.5°C, but refuses to continue heating to 26°C. I just...
  5. C

    Issue with oil fired central heating

    Hi. Currently experiencing an issue with our oil fired central heating system. When CH/HW is switched on, the central heating does not always work - the hot water does however without fail. We had the timer set to come on last night but alas, only the H/W came on. After a couple of hours of...
  6. C

    Temperamental Central Heating

    When putting our CH and HW on, it’s sometimes a lottery as to whether the central heating will come on. The HW works every time with no problems. Furthermore, when the CH does come on, sometimes only half of the radiators in the house come on - when this happens, we switch CH/HW off and switch...
  7. Grifter

    Lp20rf not firing up cdi35 worcester bosch boiler

    I recently moved into a flat with a Worcester Bosch CDi 35 Compact (or Classic System maybe?) and the thermostat on the boiler was broken (the thermostat was visibly damaged). I replaced it with a Drayton LP20RF receiver and thermostat. The boiler guy came round once other work was completed to...
  8. O

    Heating always on and reduced hot water temp

    Hello. I wonder if someone can help. We have noticed 2 issues in our house over the last couple of weeks . We have a Glow Worm Ultracom 24cxi combi boiler and have never had problems with it previously 1) central heating always/near constantly on. We have 2 small radiators and a towel rail...
  9. R

    Grant Vortex 21 - lukewarm water but hot central heating

    Evening everyone, We've been having some issues with hot water coming from our Grant Vortex 21 boiler (external, oil fired, no cylinder) Water has been getting progressively colder over the past couple of months to the point where the little one struggles to have a bath. The hot water pressure...
  10. TTGASSERVICES

    air problem with Worcester life 8000 regular

    Has anyone had any experience with the drain off/bleed valve on the primary return ,adjacent too main heat exchanger on Worcester life 8000 (45kw) regular ? I want too replace the 3/8 threaded drain off /bleed valve with a AAV ,has anymore does this? large system 28 rads 3 floors ,sealed...
  11. J

    Boiler and heating question

    Hi, I have a question about my s plan heating. I have a Worcester 35cdi erp boiler connected to 2 heating loops and an unvented indirect cylinder via 3 switch values. If I have the radiator heating on and water heating on the system doesn’t close the heating or water switch values. So doesn’t...
  12. V

    Central Heating - Blocked 22mm return pipe?

    Hello all. I've just joined, was going to post in the new members forum, but the first site generated email sent me here... I am here, as have a challenging and interesting problem, which I'll try as best to describe below keeping to the point and as short as possible, to avoid boring any of...
  13. H

    install new central heating system

    Hi All, I am very new to all this so forgive me if I am lacking alot of knowledge. Aiming to install a new central heating from scratch. Property details split over 3 floors 4 bedrooms 2 bathrooms open plan kitchen/lounge Current Installation assumptions install 8 rads in total running off...
  14. C

    Can I add a small electric boiler in parallel with my central heating?

    Hi, I would really appreciate some advice on a proposed change to my central heating circuit. I am able to divert excess electricity from my recent solar PV installation to one (or two) hot water tanks and I would like to plumb in a small hot water tank in parallel with my central heating...
  15. ronnierome

    Hi All, needing help on my daughters central heating.

    Hi thanks for letting me join, if someone cant point me in the right forum area to try help my daughter out in her first house before the cold weather hits too bad. cant seem to get anyone to visit and sort it as its an electric boiler, so electrician wont touch it as its water and plumber wont...
  16. D

    Central heating programmer and thermostat issues

    Hi, We moved into our house last year and our current central heating set up is: Boiler: Vokera Mynute HE system boiler Thermostats: 2x Robus RRF10 analogue thermstats (one in hallway and one in master bedroom) Programmer: Anaglogue Flash Immermat Timer Clock. When we came into the house...
  17. A

    Is there a disadvantage in fitting to many pumps

    Is there a disadvantage to a central heating system if there’s too many pumps added?? Thanks
  18. E

    Central Heating circulation issue

    Hello i recently converted heating system from old stove to grand vortex b house 90 , boiler runs and works fine . How ever i have issue with water circulation have installed new pump but for some reason water don't circulate at all . what are the possible cause ? i have pump installed on return...
  19. Jamm89

    Boiler cycling after balancing.

    H all, I spent a good day balancing my CH heating system with a digital thermometer. Couldn't quite get the magic 12DegC diff on all the rads but they all get nice and hot now. Some at the far end of the system have the lock shields fully open. The new problem I have encountered is once the...
  20. M

    Heating but no hot water

    Hi experts, i'm looking for some advice to get to the bottom of my boiler problem. The boiler is a Glowworm Ultimate 40FF so a traditional NOT combi boiler. The problem is i cant get hot water. Call for heating alone and boiler comes on and heats up the rads. Call for hot water alone and...
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