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Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture, such as air, contains a variety of pure gases. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer.
The gaseous state of matter occurs between the liquid and plasma states, the latter of which provides the upper temperature boundary for gases. Bounding the lower end of the temperature scale lie degenerative quantum gases which are gaining increasing attention.
High-density atomic gases super-cooled to very low temperatures are classified by their statistical behavior as either Bose gases or Fermi gases. For a comprehensive listing of these exotic states of matter see list of states of matter.

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  1. A

    Rf6030 gas leak on rf6030 vent

    Hi i have got a leak on the vent out let on a rf6030 vale can this be fixed or a new valve reqiured
  2. M

    Managing costs of gas and electric??

    Hi guys. I’m just wondering what some of you may be doing in terms of heating or hot water usage going forward, with all these cost increases? Have any of you moved to solar or renewables? Any good ideas for keeping these costs as low as possible? Cheers. Just curious
  3. C

    Gas Engineer - Upskill Opportunity

    Morning all! I'm currently working on a number of vacancies in the postcodes below for Dual Fuel Engineers and as part of this looking at Gas Engineers with CCN1/CMA1, MET1 & valid EUSR card. They will then provide training for MOCOPA and in the long run also the potential for EV Charging...
  4. I

    Gas rates on lpg system?

    Can somebody tell me how to gas rate on a lpg system longhand on a metric meter? On a condensing boiler open hot tap so boiler operates at max Two minutes test 2nd meter reading - 1st meter reading X 30 = m3/hr? Correct? Then converting this to kw net? M3/hr x propane calorific value 95...
  5. A

    I want to volunteer with a gas engineer on weekends ??

    I have a Level 3 Diploma in Gas Engineering - Pathway D (Gas Safe Course), which is a City & Guilds qualification. I work full time and would like to volunteer for free with a gas engineer during the weekends in London ?? Please pm me
  6. C

    Gas Stove over a dishwasher

    Hi All, Just a quick one. Is it ok to install a gas stove over a dishwasher ? TIA
  7. B

    URGENT Oil to gas conversion - Removing back boiler?

    Hi all, I am looking some advice regarding our renovations. We have just bought an old house circa late 1930's. We are looking to switch from oil to gas for various reasons one being the showers are electric. My question specifically regards a back boiler in one of the fireplaces. We have had...
  8. H

    Best way to advertise my gas and heating business ?

    Hello everyone , just see if anyone has any advice on the best places and ways to advertise my little part time private business I’m starting in gas and heating . I work for a company full time , but would like to have a few jobs every now and then as well privately , but struggling to get...
  9. M

    How to replace gas pipe clips?

    I have a copper 22mm gas pipe about 10m long fitted to the outside wall by a Gas engineer using plastic clips with spacers. The clips have become brittle with age and are breaking up. The pipe passes through the brickwork and has no flex in it. Any ideas on how I can replace these clips as the...
  10. R

    Gas Shutoff Valve Okay or not okay

    Hiya, I had someone tell me that the valve in the house was not okay, can someone give me a view ? thanks
  11. A

    Job opportunities like for newly qualified Gas Heating engineers?

    Hi, I am looking to Potentially become a Gas Heating Engineer. I love the idea of working with my hands and learn best that way. I like the idea of helping people have warm homes. I am currently not qualified at all and from my research., i have to dot he following: 1.) I have to do my Core Gas...
  12. C

    Dog turns on gas hob and starts chip pan fire

    Just in case you missed this astonishing video on the BBC website: news/av/world-us-canada-61838411 I've never liked touch controls on gas hob much... I can't post the full link without the forum software mangling it. Search for "Dog turns on stove and starts house fire"
  13. D

    Has anyone seen this in a gas box before?

    Hi everyone, I hope someone can help as I'm very worried and help is taking a while. Around 5am this morning our fire alarm went off, we now think it might also be connected to the carbon monoxide alarm. Got up, checking everything, no smell, no fire etc, assumed maybe the battery is running...
  14. K


    Hi guys, new to this forum. Im a heating engineer with my own business, we are a new company called KRE Heating Services. We carry out a good amount of boiler installations and looking for a competent engineer who can help out with these. Looking for someone who's reliable and experienced. I pay...
  15. D

    Would a second gas boiler be a good idea?

    Hi folks, I have newish gas boiler in 5-bed period red-brick house. The ENTIRE house has underfloor heating which works pretty well. However, my gas boiler provides heat for underfloor heating and also heat for hot water. Obviously these are at totally different temperatures. ALso, there are...
  16. S

    Which Level 3 course: Gas? or Plumbing & Heating?

    Hi everyone I'm about to progress from Level 2 C&G to Level 3 (starting in September): I'd always thought i would do the Level 3 Gas, as this was the only course my local college offered, but i've just found out they're now also offering Level 3 Plumbing and Heating. Does anyone have any advice...
  17. T

    Boiler and gas supply

    I have bought a property and this has a boiler and an immersion heater with a pump. If electric heater is off the boiler should heat the water as well. I have reinstated the water pressure as the old vendor has drained the whole system. As long as I had these airlocks the boiler was complaining...
  18. K

    What do you think of the Gas Safe magazine?

    If you read it, let me know what you think.
  19. M

    Denso tape gas safe regs

    Afternoon everyone. Could somebody state the regulation number that dictates denso tape is no longer suitable for protecting gas pipe as it could mask a potential leak? Appreciate it, thanks.
  20. R

    Career Change - Gas and Heating

    Hi everyone, I’m after some advice. I would like to make the move into gas and heating engineering. Currently I’m looking at the routes available and think that going through a training centre would be most suitable for me. Some background: I’m a junior structural engineer and have spent...