Search the forum,

combi boiler

Tankless water heaters — also called instantaneous, continuous flow, inline, flash, on-demand, or instant-on water heaters — are water heaters that instantly heat water as it flows through the device, and do not retain any water internally except for what is in the heat exchanger coil. Copper heat exchangers are preferred in these units because of their high thermal conductivity and ease of fabrication.
Tankless heaters may be installed throughout a household at more than one point-of-use (POU), far from or without a central water heater, or larger centralized whole house models may still be used to provide all the hot water requirements for an entire house. The main advantages of tankless water heaters are a plentiful, practically limitless continuous flow of hot water (as compared to a limited flow of continuously heated hot water from conventional tank water heaters), and potential energy savings under some conditions due to the use of energy only when in use, and the elimination of standby energy losses since there is no hot water tank. The main disadvantage of these systems are their high initial costs (equipment and installation).

View More On Wikipedia.org
Recent contents Top users
  1. S

    Can one inactive radiator impact combi boiler operating pressure?

    Ideal C34 combi boiler, operating pressure dropping slowly but consistently. All active radiators regularly bled. However we have one radiator with TRV set to 0 (we don't want it come on) and this is never bled. Could this be impacting the boiler pressure and should we still bleed this rad? (Be...
    • SilverFir
    • Thread
    • boiler combi combi boiler impact pressure radiator
    • Replies: 2
    • Forum: USA
  2. B

    hot water on combi boiler setting query

    Good morning, I have a query about the water dial on my boiler bought a few months ago (Vokera Easi-Heat Plus 25C Boiler) and apologies for no pictures. My hot water is fed via the combi boiler and cold water is mains fed. There are two dials under the flap one is for hot water and the other...
    • BobbyJoe
    • Thread
    • america boiler combi combi boiler hot hot water query setting usa water water on
    • Replies: 2
    • Forum: USA
  3. eagleeye

    Combi boiler producing milky slimy water

    We recently installed a new Gloworm combi boiler in a property and we had a call from the customer to say that when he runs the hot water it comes out a milky colour and feels slimy. Also when he runs the cold tap the boiler fires up and then goes off. This is happening at every outlet. Even...
  4. S

    Im looking for an Old boiler case

    I am looking for a case for a worchester 240 combi boiler. The part is obsolete now but I would be happy to buy one if someone is renewing an old boiler and come across an old worchester 240.
  5. S

    Combi boiler whistling

    Hello, I have a potterton promax combi boiler which has developed a whistling/kettling sound when turning on the hot tap. The sound seems to reduce has the tap is slowed. I have also noticed this sound occurs when the boiler is turned off and the tap is running?? I can reduce the noise by...
  6. Z

    Earthing requirements for combi boiler linked to LPG bottles.

    I have 2 lpg gas bottles outside the barn with new combi boiler inside. my entire plumbing inside the cottage is now redone in plastic apart from feeds to the boiler. the boiler is close to a sink Can anyone suggest what earthing I will require and is any earth bonding required under the...
    • zen
    • Thread
    • america boiler bottles combi combi boiler lpg requirements usa
    • Replies: 5
    • Forum: USA
  7. M

    Old baxi bermuda to combi boiler cost help!

    Hello all and thanks for letting me post this question in your forum. I have just had a quote in of £5,700 to replace our old baxi bermuda back boiler with a new baxi 800 combi boiler. All pipework in the property would be changed and along with nine radiators. Decommision and remove the old...
  8. G

    Combi boiler making noises and pressure gauge jumping, when hot water is turned off?

    Hi, I am just after some advice on my Glow worm Combi Compact 80e. Background- The boiler started to drop pressure a few weeks ago and required occasional topping up. I searched everywhere I could for leaks on the rads,[pipes etc. Nothing found as yet. It got worse and I consulted a combi...
    • Garybac
    • Thread
    • boiler combi combi boiler gauge hot hot water making noises pressure turned water
    • Replies: 4
    • Forum: Central Heating Forum
  9. P

    Hot water but no central heating from combi boiler?

    Greenstar junior 24i. It's been checked a few months ago. I haven't actually used it for central heating for a couple of years and seldom for water. The pressure on it always goes to 0 bars after a few days and usually the filling loop is permanently attached so I would just up the pressure by...
    • PlumbIT
    • Thread
    • boiler central central heating central heating system combi combi boiler heating hot hot water no central heating water
    • Replies: 4
    • Forum: Canada
  10. P

    Alpha Combi Boiler Eco 2 Plus and Thermostat.

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
    • P. R. GRANT
    • Thread
    • alpha america boiler combi combi boiler eco plus thermostat urgent usa
    • Replies: 2
    • Forum: USA
  11. P

    Alpha Combi Boiler Settings

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
    • P. R. GRANT
    • Thread
    • alpha america boiler combi combi boiler settings urgent usa
    • Replies: 0
    • Forum: USA
  12. M

    Combi boiler pressure issue

    Hi, hoping for some advice on problems I’ve had with a combi boiler. I have a Vaillant ecotec plus 831 serving 4 radiators and 1 towel rad plus water to a bathroom and small kitchen. Only recently bought the house and there were signs of leaking at all rad thermostatic valves and the stains...
    • mark6789
    • Thread
    • boiler combi combi boiler issue pressure
    • Replies: 7
    • Forum: Australia
  13. A

    Unvented System vs Combi Boiler

    Hi folks, new member to the forum here. Me and my wife are in a bit of a dilemma with our hot water/heating system we currently have. We are planning to do a kitchen extension at the back of the property (currently the kitchen is at the front, with the boiler in a cupboard), + add one more...
  14. E

    Ideal Logic 30+ combi boiler - no heating

    Hi all, Looking for some advice as to why my central heating is not working. We have recently moved 2 radiators, replacing one with a new one. When turning the boiler back on there is now no heating. We have hot water, we have checked the pressure, bled the radiators, reset the boiler. We do...
  15. S

    New thermostat doesn't turn on combi boiler

    Hi, The house I've bought came without a room thermostat. Just a combi boiler with a timer. So I bought a room thermostat, installed it, but it doesn't turn on the heating. Here are some photos to illustrate. So as you see I've piggybacked of the Live and Neutral input from the boiler to...
  16. S

    Boiler not turning off

    Hi there I've got a Valliant echo plus 28 combi boiler and what I've noticed is that when I set the thermostat target to say 20 it keeps on going( not everytime tho) I changed the stat to a nest thinking that might be the problem but noticed that again when I set it to 20 I would look an hour...
  17. M

    Worcester Greenstar Junior 28i combi boiler - no green light or heating

    Hi all, First of all, I hope I have posted this in the correct place (apologies if not). I haven't used my boiler throughout the summer and have gone to turn the heating on. The hot water is fine and no problems but the green light does not come on my boiler and there is no heat. The blue...
  18. P

    New Combi Boiler Hum

    We had a new Worchester Combi put in our loft yesterday, before agreeing to put it in the loft we asked the plumber if there would be any noise issues in the bedrooms below. He said there wouldn't be. After installation, in the bedrooms we can hear a lo whir when the heating clicks on, which...
  19. N

    Will a combi boiler be adequate for my house?

    We recently moved into a new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, the boiler is way past its life expectancy and in need of replacement. We had a couple of boiler companies come give us a quote and one of them...
  20. S

    Combi boiler constantly filling up

    Hi all my Combi boiler a Worcester 28i junior the old one is constantly filling up and over pressuring and the overflow is running like a tap the filling loop is disconnected this happens with the boiler on or off the pressure drops when the hot bath tap is on dose anyone know what’s up with it...
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock