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Underwater listed building, novel oil flue system

Here we have an unusual case study. It is a listed building in a rural part of Kent, UK, on top of a hilly area. It has a large cellar covering most of the floor area of the house. In very heavy rainfall in 2019, the road (some considerable distance from the house) became flooded, and due to some collapsed drainage on the highway, a very large amount of water gathered in a pond. At some point during the night, the water found its way into a cellar light, smashed the window, and quickly filled the entire cellar, all the […]


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Barn conversion near Tonbridge, Kent

Here we find ourselves down a rural unmarked lane in Kent, the site of a large barn conversion. It comprises a two storey hallway, and many original features. Much of the house is already underfloor heated, using an L&K system with around 14 separately controlled zones. What makes this system unusual is the various heat sources used to create the heating and hot water. There’s two fuel burning stoves, some solar thermal on the rooftop, and a Rayburn solid fuel stove. This was all installed by the present owners, who were almost singlehandedly responsible for the design and execution around […]


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Move boiler to cellar and convert to unvented hot water

We are in the Camberwell area, close to London. Our customers have a lovely Victorian house, but unfortunately, the boiler and the hot water cylinder are in a cupboard in the master bedroom. This makes the room unnecessarily warm in the summer, and of course, you can hear the boiler operating. Our customers wished, if possible, to relocate the boiler into the cellar area. Unfortunately the cellar area was underground, with no apertures to ground level, and it had no drainage. And restricted headroom. So that’s all good then. We found a small bookcase in the hallway that had originally […]


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Grade II listed building condensing boiler using chimney

Today we are in a house in a beautiful part of the Garden of England, in other words, Kent. The house is in a small village reminiscent of the one filmed many years ago for a Hovis advert, with cobbled streets and high pavements. Our customer had bought a house with an old Potterton Osprey light commercial in the cellar, and British Gas had said that many parts were no longer available. Other contractors had suggested the only options involved siting a new boiler on an external wall; this would have resulted in lots of unwanted visible pipework but also […]


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Improving water supply and Acorn heating pipework issues

Our customer lives in a remote rural location near Warlingham, in Surrey, UK. They asked us to provide a proposal to update their old Grant boiler. Interestingly, it had rotted through a few years previously, and their heating technician had located a comparatively healthy heat secondhand heat exchanger in Cornwall, which he had successfully fitted. The ladder type steel radiators suffered from perpetual air and some had stopped working, others had lost the upper sections and were partially cold, something which venting could not cure. I was intrigued because although the system was fitted with a header tank, there was […]


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Remove Ideal iStor boiler and fit super new Viessmann and Fabdec system

We’ve published a similar story here before, which is one of the reasons why our customer in this case study called us. He recently bought a relatively new property (2011) with an Ideal iStor on the second floor, it wasn’t working properly, and he had been advised that it had been a money pit since virtually day one. The other reason he got in contact with Hot Water & Central Heating Ltd was that he had used us for boiler installation before, in this case around 11 years ago (not in this house!).  A refreshing number of our early customers […]


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New model ATAG combi, runaway installer and Evohome zoning using OpenTherm

We’ve been installing commercial sized ATAG boilers for some time, in fact, you will find some others on this blog. ATAG have recently relaunched their domestic offering in the UK, and now offer 10 year warranties and 24hr technician support.   ATAG are a premium brand boiler manufacturer from the Netherlands, although a stake is now owned by Ariston MTS Group. Our customer had selected an ATAG IC Economiser 39, which is a combi boiler augmented with ‘designed at birth’ flue gas heat recovery (rather than tacked on afterwards like most other manufacturers), and reputed to be the most efficient boiler […]


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Worcester-Bosch 1 Keston 0

For this case study, we find ourselves in Oxted, Surrey.  We like Oxted, because it is a lovely, virtually unspoilt town (if you exclude Morrisons) full of coffee shops and yummy mummies.  I suppose it is similar to Sevenoaks with all the good bits squeezed into a smaller area.  It is also very close to Hot Water & Central Heating Ltd HQ, so we get a lot of projects there. A larger house, this had a Keston C55 boiler and a significant number of radiators.  The Keston boiler had been unreliable (no surprises there) so we suggested a Worcester-Bosch alternative. […]


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A new Worcester Danesmoor, MultiCalor Warm Air, Radiators, Water pressure boosting…..

Today we are in a rural property in the Edenbridge/Tonbridge area of Kent. Our customer has recently moved back to the UK from working abroad.  He has bought a detached house in the middle of the Kent countryside. The subject of an extensive makeover in the last 20 years, this property had a Lennox oil fired warm air unit in the cellar, a Worcester standard efficiency boiler in the external cupboard, and a conventional hot water system. The warm air system was around 20 years old, and covered the two reception rooms , kitchen and hall areas. It was very […]


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William Pitt the Younger’s house

The focus of our case study is a listed building in Westerham, Kent, which was once the residence of William Pitt the younger. Westerham is a small town steeped in history, and features Chartwell, home of Winston Churchill, Downe House, home to Charles Darwin, and Squerryes Court.  Chevening, the deputy prime minister’s estate, is just down the road. Featuring timbers that are believed to date back to the 13th century, in more recent times William Pitts’ former house has been an upmarket restaurant, and an Indian fine dining eaterie. The present owners purchased the property in a state of dilapidation, […]


Customer Testimonials

Excellent Work

Excellent work , the workers were very efficient, considerate and tidy. They worked with the least disruption possible for an elderly lady. Any unexpected problem was dealt with safely and professionally. The finished heating is to a high standard. K.T. Kent

Jennie 05/05/2017