We’d like to remind Forumites to please avoid political debate on the Forum.

This is to keep it a safe and useful space for MoneySaving discussions. Threads that are – or become – political in nature may be removed in line with the Forum’s rules. Thank you for your understanding.

📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!
The Forum now has a brand new text editor, adding a bunch of handy features to use when creating posts. Read more in our how-to guide

Heat exchanger

2»

Comments

  • doodling
    doodling Posts: 1,345 Forumite
    1,000 Posts Fourth Anniversary Name Dropper
    edited 10 December 2025 at 9:44AM
    Hi,
    Nearlyold said:
    An unvented mains pressure HW cylinder system  (not to be confused with a gravity fed tank system) will be way better than any combi in terms of pressure. 
    That is impossible as they both deliver mains pressure - I would expect them to give the same static pressure (the cylinder will on average across many installations be slightly worse as they are fitted with pressure regulators whilst, so far as I am aware, combis are not).

    A mains pressure cylinder is likely to deliver much better flow than a combi so if you want to fill a bath then it will be a better choice.
Meet your Ambassadors

🚀 Getting Started

Hi new member!

Our Getting Started Guide will help you get the most out of the Forum

Categories

  • All Categories
  • 353.5K Banking & Borrowing
  • 254.2K Reduce Debt & Boost Income
  • 455.1K Spending & Discounts
  • 246.6K Work, Benefits & Business
  • 603K Mortgages, Homes & Bills
  • 178.1K Life & Family
  • 260.6K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 16K Discuss & Feedback
  • 37.7K Read-Only Boards

Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.