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            <title>
									Renewable Heating Hub Forums - Recent Topics				            </title>
            <link>https://renewableheatinghub.co.uk/forums/</link>
            <description>Questions and discussions about renewable heating and heat pumps</description>
            <language>en-GB</language>
            <lastBuildDate>Wed, 27 May 2026 17:26:44 +0000</lastBuildDate>
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							                    <item>
                        <title>Vehicle-to-Home with a Heat Pump: Is the Technology Ready and Which EV Should I Buy?</title>
                        <link>https://renewableheatinghub.co.uk/forums/energy-storage/vehicle-to-house-storage/</link>
                        <pubDate>Wed, 27 May 2026 11:46:30 +0000</pubDate>
                        <description><![CDATA[I have read threads on this forum and know there is knowledge of V2H etc etc within the community.  I am also aware that the technologies are developing quite fast and some of the electrical...]]></description>
                        <content:encoded><![CDATA[<p>I have read threads on this forum and know there is knowledge of V2H etc etc within the community.  I am also aware that the technologies are developing quite fast and some of the electrical stuff is a bit beyond me.   That said I am interested in views on how the technology and regulations are developing and potential for adoption in my situation.</p>
<p>Our house has a 3.5kW ASHP and finally a working smart meter.  Our second vehicle is dying (K reg Golf) and won’t go past the MOT in September.  We live on an island so most of our driving is quite short distances.  An EV would make some sense.  We currently have no battery storage of any sort.  Ideally I would like to use a time of use tariff to charge the car and use that energy during the day to power the house - when the vehicle is not in use. Our house typically uses max 10 to 15kWhrs a day.  Is the concept of pursuing V2H a logical direction to go and should that influence our choice of EV if we buy one now - or should we wait a few more months or years?</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>DavidB</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/energy-storage/vehicle-to-house-storage/</guid>
                    </item>
				                    <item>
                        <title>Vito Energy Liquidation</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/vito-energy-liquidation/</link>
                        <pubDate>Wed, 27 May 2026 09:48:53 +0000</pubDate>
                        <description><![CDATA[Hello, new member here, though I&#039;ve lurked for some time.
&nbsp;
Vito Energy have gone into liquidation, which is a shock for what seemed a viable company with Patrick Wheeler appearing on...]]></description>
                        <content:encoded><![CDATA[<p>Hello, new member here, though I've lurked for some time.</p>
<p>&nbsp;</p>
<p>Vito Energy have gone into liquidation, which is a shock for what seemed a viable company with Patrick Wheeler appearing on several RHH videos.</p>
<p>I had my heat pump installed by Vito Energy 2 years ago, and tried to book an annual service, all I got was an engaged tone. I checked with Company House, and they went into liquidation 6 days ago. Does anyone know anything more about this?</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>MentalLentil</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/vito-energy-liquidation/</guid>
                    </item>
				                    <item>
                        <title>Solar Energy - No Thanks.</title>
                        <link>https://renewableheatinghub.co.uk/forums/solar-photovoltaic-pv/solar-energy-no-thanks/</link>
                        <pubDate>Tue, 26 May 2026 16:46:26 +0000</pubDate>
                        <description><![CDATA[Any readers with an interest in Solar Farm generation in North Devon may be interested in this announcement I have received from The Derril Water team.
&nbsp;
”
We are writing to inform y...]]></description>
                        <content:encoded><![CDATA[<p>Any readers with an interest in Solar Farm generation in North Devon may be interested in this announcement I have received from The Derril Water team.</p>
<p>&nbsp;</p>
<p>”</p>
<p class="wp-block-paragraph">We are writing to inform you of an unexpected electricity grid issue that requires Derril Water Solar Park and other renewable generators in North Devon to shut down.</p>
<p class="wp-block-paragraph"> </p>
<p class="wp-block-paragraph">We have been notified by the electricity Distribution Network Operator that they are constraining Derril Water Solar Park and other generators in North Devon to prevent potential network overloads. The problem has been triggered by works being carried out at the Transmission Network sub-station at Alverdiscott near Barnstaple. The constraint is unexpected and has been enforced on our solar park and other generators in North Devon with no warning.</p>
<p class="wp-block-paragraph"> </p>
<p class="wp-block-paragraph">The information we have so far from the Network Operators is the curtailment may remain in place through the summer until early September.” Regrets, Toodles.</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>Toodles</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/solar-photovoltaic-pv/solar-energy-no-thanks/</guid>
                    </item>
				                    <item>
                        <title>Hitachi Heat Pump being replaced with Vaillant</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/hitachi-heat-pump-being-replaced-with-vaillant/</link>
                        <pubDate>Tue, 26 May 2026 14:03:14 +0000</pubDate>
                        <description><![CDATA[Today we start the replacement of our 2-year-old split 7kW Hitachi Heat Pump.  Being replaced with a Vaillant aroTHERM plus 3.5kW.  The unit is being replaced because it’s over sized for the...]]></description>
                        <content:encoded><![CDATA[<p class="p1">Today we start the replacement of our 2-year-old split 7kW Hitachi Heat Pump.  Being replaced with a Vaillant aroTHERM plus 3.5kW.  The unit is being replaced because it’s over sized for the property and has so many quirks:</p>
<ul class="ul1">
<li class="li1">Requires constant management, which a non-technical person could not to manage</li>
<li class="li1">Performs defrost even at OAT 15C</li>
<li class="li1">Poor COP during defrosts and cold periods</li>
<li class="li1">Defrosts every 35mins irrespective of evaporator or outside temperature</li>
<li class="li1">Erratic performance, have to turn off to reset</li>
<li class="li1">Split system not suitable for this property</li>
<li class="li1">HP is operating close to its minimum operating performance characteristics</li>
<li class="li1">Short cycling is managed by a SW fix which monitors temperature Flow Temp and waits for a 2C drop before restoring heat.</li>
</ul>
<p class="p1">As Mars would say “Its like managing a patient on life support”.</p>
<p class="p1">Today’s activities:</p>
<ul>
<li class="p1">Returned R32 refrigerant to HP</li>
<li class="p1">Removed Heat Pump and Internal Water Storage unit (125Kg)</li>
<li class="p1">Hole drilled in slab for defrost drainage</li>
<li class="p1">Vaillant HP and Water Storage placed</li>
</ul>
15126
15130
15128
15131]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>trebor12345</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/hitachi-heat-pump-being-replaced-with-vaillant/</guid>
                    </item>
				                    <item>
                        <title>Solar Produced vs Home Consumed</title>
                        <link>https://renewableheatinghub.co.uk/forums/solar-photovoltaic-pv/solar-produced-vs-home-consumed/</link>
                        <pubDate>Tue, 26 May 2026 10:06:38 +0000</pubDate>
                        <description><![CDATA[Hello can anybody advise please..this may be a silly question as I&#039;m not familiar with the workings of the inverter.  We have 11 panels installed avout 4.84kw)  S Solax X1-Boost-G4 invertor....]]></description>
                        <content:encoded><![CDATA[<p>Hello can anybody advise please..this may be a silly question as I'm not familiar with the workings of the inverter.  We have 11 panels installed avout 4.84kw)  S Solax X1-Boost-G4 invertor.  No Battery.  No contract to sell back into the grid.  I use the Solax Cloud app to monitor performance.  On a good day I might get about 18kw solar output.  The app also tells me that the domestic consumption is exactly the same.  Does this simply mean that every bit of solar power produced has been used in our house?  On a bad day the Solar Output is way down but according to the app so is domestic consumption.  Does the inverter juggle between power sources and prioritise solar power use over electricity from the grid?  </p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>WesleyP1874</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/solar-photovoltaic-pv/solar-produced-vs-home-consumed/</guid>
                    </item>
				                    <item>
                        <title>Heat Pump Overpromising – What Were You Actually Told Before You Bought?</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/heat-pump-overpromising-what-were-you-actually-told-before-you-bought/</link>
                        <pubDate>Mon, 25 May 2026 09:45:40 +0000</pubDate>
                        <description><![CDATA[We&#039;re looking into overpromising in the heat pump industry, and I suspect there&#039;s a lot of it about. Whether it&#039;s from an installer, a manufacturer or one of the big energy companies, what c...]]></description>
                        <content:encoded><![CDATA[<p class="font-claude-response-body break-words whitespace-normal leading-"><span>We're looking into overpromising in the heat pump industry, and I suspect there's a lot of it about. Whether it's from an installer, a manufacturer or one of the big energy companies, what claims have you come across that just didn't stack up?</span></p>
<p class="font-claude-response-body break-words whitespace-normal leading-">Pop them below please...</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>Mars</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/heat-pump-overpromising-what-were-you-actually-told-before-you-bought/</guid>
                    </item>
				                    <item>
                        <title>Heating DHW in stages</title>
                        <link>https://renewableheatinghub.co.uk/forums/domestic-hot-water-cylinders/heating-dhw-in-stages/</link>
                        <pubDate>Mon, 25 May 2026 07:35:14 +0000</pubDate>
                        <description><![CDATA[As heatpump efficiency drops at higher temperature, is there any merit in running two or more HW schedules back to back with increasing temperatures.
Rather than a 52°, use 35° followed by ...]]></description>
                        <content:encoded><![CDATA[<p>As heatpump efficiency drops at higher temperature, is there any merit in running two or more HW schedules back to back with increasing temperatures.</p>
<p>Rather than a 52°, use 35° followed by 45° and finally 52°</p>
<p>Do modern heatpumps already heat the water automatically in this manner, or just whack output temp straight up to the required temp</p>
<p>I guess stop starts would negate any gain. However if the first schedule would normally complete after 50 minutes, simply set the second schedule to start around the 40 to 45 minute mark...</p>
<p>&nbsp;</p>
<p>&nbsp;</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>Singlespeed</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/domestic-hot-water-cylinders/heating-dhw-in-stages/</guid>
                    </item>
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                        <title>How many people are happy with their ASHP and do you believe them?</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/how-many-people-are-happy-with-their-ashp-and-do-you-believe-them/</link>
                        <pubDate>Wed, 20 May 2026 21:42:28 +0000</pubDate>
                        <description><![CDATA[It&#039;s easy for social media to warp perception and I only know one person in real life with one. He thinks it&#039;s great because he&#039;s spent umpteen thou on it (with PV and batteries), but then s...]]></description>
                        <content:encoded><![CDATA[<p>It's easy for social media to warp perception and I only know one person in real life with one. He thinks it's great because he's spent umpteen thou on it (with PV and batteries), but then shows me all the mistakes his plumber made fitting it. The house isn't very warm, install looks awful, house is uninsulated.</p>
<p>When you read online some say they are overjoyed. You ask how long have they had it and they say a month, that month being April.</p>
<p>Or that they got it for free, yesterday.  It's a £500 Chinese unit with a 1yr warranty.</p>
<p>Maybe it cost £30k so therefore I am entitled to be happy no matter what. ROI of 20yrs by which time it'll be clapped out and need replacing and have £10k spent on servicing and other faults.</p>
<p>So I hit Google with 'how many are happy?' 79 to 94% came the reply which sounds very positive.</p>
<p>I reversed the question and got "<strong class="Yjhzub" data-sfc-root="c" data-sfc-cb="" data-processed="true" data-copy-service-computed-style="font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);">15% to 20%<!--TgQPHd|[]--></strong> of owners report being unhappy or frustrated" which is different, but not far off really.</p>
<p>I was sent a survey to fill in about my new install. I'd never had one.</p>
<p>Are the aforementioned people the ones being asked in the surveys?</p>
<p>I watched a video where an Irish vendor said that their customers complained their electric bills had gone up massively. He then asked about the gas bills and they said 'What gas bill? We don't have one anymore.'</p>
<p>So do you think that some 80% have genuinely had a better system than a new, properly specced and fitted gas combi would have given them? </p>
<p>I'm not interested in your opinion of your system, you form an extreme minority. What about the majority of ASHP owners? Are they really happy and how would we know? Is there a way of finding out?</p>
<p>I doubt it, but would be really interested to find out.</p>
15076
<p>&nbsp;</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>Deltona</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/how-many-people-are-happy-with-their-ashp-and-do-you-believe-them/</guid>
                    </item>
				                    <item>
                        <title>NIBE 1140 - what is mean time before failure? Installed 2009 and now struggling to heat hot water</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-grounds-source-heat-pump-gshps/nibe-1140-what-is-mean-time-before-failure-installed-2009-used-from-august-2009/</link>
                        <pubDate>Wed, 20 May 2026 20:48:36 +0000</pubDate>
                        <description><![CDATA[We have had a lot of problems in the last year, and it has finally stopped heating the water beyond about 28C, despite trying it on hot water only. 
We are talking to NIBE about replacing i...]]></description>
                        <content:encoded><![CDATA[<p>We have had a lot of problems in the last year, and it has finally stopped heating the water beyond about 28C, despite trying it on hot water only. </p>
<p>We are talking to NIBE about replacing it, but there is since a lead time with installers in SE Scotland. At the moment we have no way of heating water.</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>AliRam</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-grounds-source-heat-pump-gshps/nibe-1140-what-is-mean-time-before-failure-installed-2009-used-from-august-2009/</guid>
                    </item>
				                    <item>
                        <title>Heat Pump Operation in Summer - Valliant 7kW</title>
                        <link>https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/heat-pump-operation-in-summer-valliant-7kw/</link>
                        <pubDate>Wed, 20 May 2026 07:06:37 +0000</pubDate>
                        <description><![CDATA[As a new HP owner, I would welcome people’s opinions on whether it is better to turn space heating off during the summer or to leave it on? Solar gain can leave the house very warm overnight...]]></description>
                        <content:encoded><![CDATA[<p>As a new HP owner, I would welcome people’s opinions on whether it is better to turn space heating off during the summer or to leave it on? Solar gain can leave the house very warm overnight and my wife likes to sleep with an open window.</p>]]></content:encoded>
						                            <category domain="https://renewableheatinghub.co.uk/forums/"></category>                        <dc:creator>L8Again</dc:creator>
                        <guid isPermaLink="true">https://renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/heat-pump-operation-in-summer-valliant-7kw/</guid>
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