Heating Services

Most homes and small commercial buildings around Newbury and Thatcham run on mains gas, and that is where the bulk of our heating work sits: boiler replacements, control upgrades, system faults and heating design for extensions. Properties off the gas network — parts of Chieveley, Kintbury and the Lambourn valley — often run bulk LPG instead, which behaves similarly but needs different injectors, burner pressures and tank arrangements. Whichever fuel you have, the first visit is a survey. We look properly at what the existing system is doing before deciding what ought to replace it.

Combi or cylinder is the decision that comes up most often, and it turns on the incoming water main rather than on the boiler. A combi fed by a weak main will disappoint no matter how large its output, so we measure the cold flow rate at the kitchen tap before recommending anything. One bathroom and a healthy main suits a combi. Two or more bathrooms, or showers running at the same time, usually points to a system boiler and a cylinder. Where an existing cylinder is sound and well insulated, keeping it is often the right answer.

Controls are where installed efficiency is quietly thrown away. Building Regulations Part L sets a minimum for boiler replacements in England: time control and a room thermostat, plus one efficiency measure — weather compensation, load compensation, flue gas heat recovery, or a smart control with automation and optimisation. Given the choice we would rather fit weather compensation with an external sensor than an app that simply switches the same fixed flow temperature on and off. Zoning, thermostatic valves on the rooms that need them, and a realistic setback pattern do the rest.

Condensing boilers only condense when return water is cool enough — broadly below the mid-fifties in Celsius — and a system driven flat out at eighty rarely gets there for long. Dropping the flow temperature recovers genuine efficiency, but only if the emitters can still meet the heat loss on a cold morning. We calculate heat loss room by room, check radiator output at the lower flow temperature, and upsize the two or three that fall short rather than replacing every emitter in the house. Balancing the circuit afterwards matters as much as the radiators themselves.

Water quality decides how long a system lasts. Much of West Berkshire sits on chalk, so scale is part of the picture alongside the magnetite sludge that steel radiators produce as they corrode. BS 7593 sets out the regime: clean the system, fit an in-line magnetic filter, dose corrosion inhibitor, then actually test the inhibitor concentration each year rather than assuming it is still there. Cold radiator bottoms, a pump that has failed twice in three years, or a boiler that overheats briefly and then settles are circulation symptoms, and replacing the boiler without addressing them simply moves the problem along.

Stored hot water brings requirements of its own. An unvented cylinder is a pressure vessel: it needs an expansion arrangement, two independent safety devices and a discharge pipe run to a safe, visible position, and the work is notifiable under the Building Regulations. Sizing should follow the household's peak draw-off rather than a bedroom count, and a secondary return or a trace-heated dead leg is what stops a long pipe run running cold at the tap. Those safety devices want checking annually alongside the boiler, which is the visit where a tired expansion vessel gets caught early.