William (Bill) Johnson

993 posts

William (Bill) Johnson

William (Bill) Johnson

@B_JohnsonBill

BSc. Mech Eng. Heat pump specialist. Interests in big & small sustainable thermal energy design, training and empowering current and future players.

Bridgwater, Somerset, UK เข้าร่วม Ekim 2011
521 กำลังติดตาม501 ผู้ติดตาม
William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@writefirstdraft Great article, very insightful. I have thought for a long time that the government subsidies prop up the price of heat pumps. We saw this with PV, each time FIT tariffs feel so did the price of panels. I also heard of from a major supplier. Look at the cost of PV now.
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
This is a really important part of the industry. Installation is often difficult but relatively simple if the basics are followed. Diagnosing faults or wrong settings needs a different level of skill. Good for you Mike. I know how much work you've put in to get to this stage.
Cllr Mike Sammon@Mike_Sammon

In the past few weeks I’ve worked on Vaillant, Mitsubishi, Panasonic, Samsung, NIBE and Daikin heat pumps. I’m going to start videoing my findings because it is super interesting learning the nuances between how each heat pump works. Does anyone have any model specific questions?

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Chris Dunham
Chris Dunham@chrisdunham70·
Hadn't twigged this was a thing. You need planning permission for an ASHP if the volume of the air source heat pump’s outdoor compressor unit (including housing) exceeds 0.6m3. planningportal.co.uk/permission/com…
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@chrisdunham70 This was in a rushed permitted development regulation that was released in 2010 after the Tories got in power. At the same time they abandoned all incentives for heat pumps and delayed the RHI for 4 years. This was a clever move since small HPs are difficult to make quiet.
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@AbigailDombey There's also no requirement to inform DNOs about electric showers or induction hobs with amperage many times greater than heat pumps and are used at peak times.
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Patrick wheeler
Patrick wheeler@Patrickswheeler·
The first EPC we've seen where the Heat Pump has contributed to an A! Still only "Good" but an improvement at least 😍
Patrick wheeler tweet media
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@swebster56 @Damon_BPHR In 17 years of heat pumps I have only found about 10 houses that needed hybrid. The biggest reason is electricity supply not big enough not radiator temperature. Now the same houses are fitting 3ph for EV charging, problem solved.
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Steve Webster
Steve Webster@swebster56·
@Damon_BPHR The entire thing is a blag mate, better boiler scrapped, crap install, bull shit claims with no figures etc etc. To get any real win from a hybrid the system needs upgrading, allowing the hp to cover 80% minimum of heating duty.
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EL COPO
EL COPO@Damon_BPHR·
Nice to see the new boiler was on the wall by midday and turned on too, great flushing technique.. the more I see the worse it gets
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William (Bill) Johnson รีทวีตแล้ว
Steven Donziger
Steven Donziger@SDonziger·
BREAKING: Canada's brutal national police are again arresting Indigenous peoples trying to protect their own lands - this time the Pacheedaht nation in British Columbia. Brave reporting by Brandi Morin. The RCMP has to be the most anti-Indigenous police force in the world.⤵️
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@ejwwest @heatpolicyrich The government is keen to use market forces to push the transition but the rules still favour fossil fuel. There's been no positive publicity from HMG but lots of negative from Tory donor media who obviously have shares propping up the oil and gas industry.
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James West
James West@ejwwest·
@B_JohnsonBill @heatpolicyrich Yes. In the 1950s few homes had any sort of central heating. By the 1980s most did, and it was expected by most house buyers. I’d expect by the 2040s heat pumps will be an expected feature for most house buyers.
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Richard Lowes
Richard Lowes@heatpolicyrich·
The thing I don't get about the anti-efficiency, anti-heat pump pro-gas lot is, are you really happy with an ever increasing reliance on gas imports? Are you actually happy for the UK economy to be that exposed?
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
Who would have thought that inflation was caused by #nurses, #Doctors and #rail workers spending lots of money after COVID and Brexit. If they get more money how exactly will that increase the price of coffee, petrol, bread, milk etc? Economics is clearly complicated.
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Sev
Sev@severs1966·
@colinwalker79 Would it have been a bad thing, before EVs were a thing, to develop and sell (and buy) more reliable cars that need less attention from mechanics, causing those mechanics to receive less business from the owners?
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Colin Walker
Colin Walker@colinwalker79·
I won’t make light of worries people have for their jobs as we move to #ElectricVehicles But should we have stopped shift from horse to car out of concern for the farriars? When change happens, rather than try and stop that change, push gov to provide retraining opportunities
Colin Walker tweet media
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William (Bill) Johnson
William (Bill) Johnson@B_JohnsonBill·
@colinwalker79 I did 5 years as apprentice mechanic, at the end there were so few jobs because of improvement in reliability I moved on. I am now a heat pump specialist at the start of a new industry. Mechanics make great heating technicians because they understand how things work.
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Shmergel Flonk
Shmergel Flonk@shmergel·
@heatpolicyrich No. That’s why we need many new nuclear power stations asap.
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@writefirstdraft @engineers_feed @AbigailDombey @CrestNicholson @chrisdunham70 @suburbanpirate @cbrookesheating @Patrickswheeler