Yes, the cold feed for both is off the mains, so it would only be the hot that needs boosting.
I think the hot feed from the cylinder feeds the whole house so I presume there must be a diversion (is that what tee'd off means?) somewhere. Why would there be a problem with air being drawn in...
I'd be really interested to know if the pump performs as expected... would you mind posting your experience with it here? Then I can rehearse my speech for the plumber!
Thanks for the explanation Nige F - I hadn't understood that a pump requires some pressure to work. I've had a look at the pumps everyone has suggested and I have a couple of questions:
What is an air switch? Does it mean that you would have to decide whether to turn the pump on or not...
Thanks for your reply. Just to clarify - It's the sink and bath (especially the bath!) that are the problem since the shower is electric.
You mention a rate of 12 litres/min - what is the normal rate? Could a less powerful pump be installed?
One of my concerns about a megaflo ( which...
A few years ago I had a loft conversion with an extra bathroom. As the hot and cold tanks are both in the loft too, we get very poor water flow from the hot taps, but we thought we would switch to a combi boiler so we put up with it. When we eventually changed the boiler, we went for a non-combi...