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It sounds like your new guy had identified some remedial work based on the sample of black water coming out of your system. This means that you have contaminants in the heating which need to be removed (drained). Typically this will entail adding a flushing chemical a couple of days before...

I have a 1.8 non-turbo diesel Escort van, 1999 (V) model with 105,000 miles on the clock. When I bought it there was abox in the back with timing belts and pulleys in, so I have assumed these have been replaced. The power is extremely low, though it is relatively smooth. I have to use at least...

Uuggh :!: Ugly, but nicely bent, though I don't see the need to have added 2 extra bends (+0.6m of pipe). The clipping distances are good, but they should have used secure ("snap-over") clips so that it doesn't get pulled out when the safety conscious window cleaner uses it as a tie-on for...

I think mmalone is confusing the boilerstat dial setting ("...up to 5...")with sealed system pressure. The noises you describe seem to be consistent with boiler kettling, by all means try the noise reducing chemicals as a first action, you may need to descale the boiler if they are...

Have you had the diverter valve out, scale often sits inside this, though it mainly affects the CH output. I suggest you strip the main H/E as well as the DV, not forgetting the pump itself. If you do get a powerflush done make sure the operator uses an adapter which replaces the boiler pump...

If you have a Megaflow there will be a silver Honeywell 2-port valve on the pipe leading from the "primary flow" connection. Look for a similar valve on the pipework in this area, this will be the heating valve. With the power off the valve should be shut and the small metal lever on the end...

For normal "pipes up through floorboards" add 85mm to the rad nominal length for one TRV and one lockshield. Using valves which have a 15mm nut and olive type connection at both ends gives about 8mm adjustment at each end. Don't drill the floor within 60mm of a corner or the TRV may not be...

Yes, it sounds like the filter has blocked again. Generally you'll have to drain the system to clean this filter, I'll come to why later. Sounds like a powerflush is due, though you may get away without, BG earn a lot of money using the powerflush ploy (£800 ish?) I suggest you do the...

His name sounds like the basis for a good April fool gag. Everyone knows the Mr C Lion at the zoo ruse, so Juan's, being a bit more subtle, was good. Try this on some yuppy type in an office. Leave them a message on their desk, just as they return make out you've just written it before you...

Once again misuse of the word efficiency. I take it you mean to reduce your heating cost. You burn gas all day (and night) because you want convenience and comfort. These things cost money and increase your carbon emissions. If you time the heating to come on 1/2 an hour before you get up, and...

Your symptoms are of lack of water, possibly combined with residual chemicals from the powerflush. Is this an electrically heated thermal store? If so the CH may be open vented, not sealed. Do you have a single storey? Can you locate the method of filling the system, a small header tank or...

The Unsafe Situations precedure states that a gas appliance which has become dangerous due to faulty or lack of servicing is RIDDOR reportable. It is a CORGI registered Gas Installer's duty to report this when discovered. HSE do not discuss any action taken as a result of your report, they...

I take it the flue is metal, and expands when it gets hot? Could it be rubbing against, or being restrained by, the fabric of the house? Take a look at BS5440 and Building Regs Doc J for recommended clearances to combustible materials (especially where the flue goes through floors) Have...

Efficiency is not the issue, effectiveness or cost is usually implied by this. Heating the water only when needed is the cheapest way, but not the most convenient. Keeping the DHW stat low is cheaper but more of the hot is used in proportion to the cold (i.e when showering) so the tank may run...

What is the system pressure? The noise is NOT caused by the auto-air vent, but the auto-air vent could be leaking water, leading to low system pressure and noise. Open your text book and read the section on sealed systems. Understand that pressure is not flow. Understand that water expands...

Most of the gyms I've used have been unbearably hot and I'd always choose the running machine close to the A/C blower. Therefore...have you considered a heat pump. It runs on electricity but costs about the same to run as gas because for every kW of electricity used it gives about 3kW of heat to...

If your heating doesn't work and you still like (I assume "liked" was a typo error) why not post the symptoms of your heating faults so we can guide your plumber to success. If it's a boiler problem then you'll need a Registered Gas Fitter (Installer), and I'm sure Agile will be pleased to help...

Good points from Chrishutt, I'll just add that there may be a zone valve (electrically operated valve) which is either not opening or is seized in the nearly shut position (old Sunvics are known for this), restricting your heat transfer to the cylinder. If you're a high user of water get the...

In the absence of any specific information like boiler make/model, number of rads, controls fitted, age of system, it is normally difficult to diagnose. As a punt in the dark try looking at your system pressure gauge, it should show between 1 and 1.5bar in a tytical 2 storey house with the...

Could you tell whether it was a four cylinder model or not? If not try telling us the name on the bonnet.