Marvin

Perhaps the surface is slightly dusty??

Hi @Super_Paulie Hello from down south. Marvin

the first two parts in your diagram just pull upward

You don't even have to take it apart to plunge it. its just a standard shower trap.

I think it will be the waste pipe from the shower trap to the external soil stack has not enough fall on it. Typically the ones I am asked to sort out have been put in with the pipe too level or going uphill, elbows rather than swept bends, and unsupported pipes that sag. If the trap is removable then plunging is a good start. M

I bet the trees were cheaper to buy 20 years ago!

Interesting. I will have to upload my calculations to find where I have gone wrong. M

I'm quite surprised by this. I will have to check my calculations. I had calculated a saving in winter for heating and a saving in summer for cooling....

Hi @pepelepeu I think it should be open. That is the black valve on the left ( I assume there are 2 valves and not just a bad photo).

Hi @pepelepeu Judging from my experience the Expansion vessel is not working properly. Our ASHP system runs at 2 bar so the red line is about right. Is the valve on the pipework which allows the pressure to expand the vessel OPEN? looks closed to me. That's the one to the left of the PRV in your photo. Should it not be like this? and not this Good luck Marvin

Hi @Adrian_london Only a Typo! kWs Kilowatts M

Hi @Adrian_london I'm trying to understand the maths.... what amount of KWs in total are your panels?? Do you have an 8kW system?? Having PV and ASHP is always better than just one or the other.

Hi @pepelepeu Yes, a bit of grit or a frequent flow of water out of the overflow can scale the PRV components. As the water in your system heats up it expands and need somewhere to go otherwise the pressure will rise and water will be released by the PRV. When the water temperature reduces and the volume of the water shrinks the correct pressure will be lost. Now you have to fill it up again... When filling up the system to the correct pressure does the pressure gauge rise quickly to the correct pressure or slowly? The reason I asked is because the top of the pressure vessel needs to be pressurised, by pumping air in, to the level required to work properly. If the air pressure is too low the expansion tank will fill up the available space for expansion (the resistance to pressure being so low) when setting the water pressure side. If the pressure is too high the pressure vessel will not allow any room for expansion before the pressure forces the water through the PRV. Worth checking the settings. Good luck Marvin

Met office show snow for the highlands today...

We're trying our best. We are using a PV diverter to the hot water tank which is at 75C to last 2-3 days. We have about 40W PV installed per m2 floor.

As my brother says if your paying the money you make the choice!

Quote: Section 75 protection if you pay a deposit by credit card You don’t need to pay the full price by credit card to get section 75 protection. It’s enough to just pay the deposit to get you the legal protection. For example, if you bought something costing £200 but paid a deposit of £20 on your credit card and the rest by other means (eg via debit card or cash) you’d still be covered and you would be able to claim the whole £200 (and not just the deposit) from your credit card company if the goods didn’t arrive or were faulty. You can also make a claim for more than just the price of the items. For example, if you could claim from the supplier for additional expenses (such as postage) or consequential losses (such as damage caused by a faulty item), then you can also make a section 75 claim for these with your credit card company.

Hi @Chanmenie This might help: https://www.moneyhelper.org.uk/en/everyday-money/credit-and-purchases/how-youre-protected-when-you-pay-by-card

Hi @karl mcilwain Start out with the end in mind. The biggest constraint is usually... money! Considering the state of the economy and your personal circumstances, decide what your budget is. After that, list your "must haves", below this your "prefers", and then "it would be nice" items. If you manage to be within your budget and go further down the list than "must haves" - well done! A rough design is next. with basic information. For example: " a single story extension with a flat roof 2.4 meters by 3 meters with one window" " a double story extension with a pitched roof 4 meters by 6 meters with a new kitchen and French doors out to the garden." " a loft conversion with a bedroom and 2 Velux windows in the roof 4 meters long and 2.5 meters wide" " a loft conversion with 2 bedrooms, a shower room with a loo and sink, 7 meters long and 3 meters wide with 3 dormer windows." Give everybody something to work with..... Good luck Marvin PS. Watch every episode of Grand Designs and learn the mistakes, what puts the price up and what the expensive items are.

A few thoughts How many people in the building? How many bedrooms? Do you have a south facing pitched roof that is not shaded? You have about 1200 hours of sun a year. We have PV, a hot water cylinder and an excess power diverter. And it works very well.

Hi @Fogg It's common to speak of the build cost as the average amount of pounds spent per square meter of floor space constructed. I have heard of figures between £1000 and £2000 per square meter for a build cost. Find the internal floor area and this would be a starting point in my opinion. Other people I'm sure will add about which necessary items are not included in this figure. Watch every episode of grand designs, and learn some of the mistakes to avoid and where the big costs are. Good luck Marvin.

Excellent! We do the same but with our immersion and ASHP.

Hi @canalsiderenovation Yes. As you are not being paid for the power. We do. New ASHP £5k? New immersion £50? Also we have super insulated our tank and loose little heat so heat the water higher than required and it lasts more than a day (a day that could be no sun and we would have to use the ASHP). We use weather compensation mode in the winter and I have adjusted the hot water temp to the lowest practical hot water setting. Basically any time the water drops to the level set the ASHP will heat the hot water, otherwise the solar diverter will take over and raise the temp to 60°C. Good luck Marvin

Hi @four_candles Sounds interesting. In my humble opinion: You should start with client requirements. Before you go looking at what someone else thinks you want, draw up a list of the items you typically find in a 4 bed house and divide between what you do want and what you don't want. If this is your forever home you'd better be thinking about level access from the street, through the house and out into the garden, a little bit wider internal doors and a down stairs loo and shower. If this is your forever home you should spend more money installing insulation than on installing heating. Lots of help on BH. Good luck. Marvin

Rule 2 of Grand designs decide on a building that will cost way too much. Oh and congratulations.