Heating & Insulation
Up to 25% Lower Bills from Loft Insulation Topped to 270mm with Knauf Loft Roll on a Detached Home
A detached home can lose a quarter of its heat through the ceiling, yet the 25% saving attached...
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6 Steps to Bleed a Sealed Heating Circuit Using a Fernox TF1 Filter
A sealed system holds pressure at 1.0 to 1.5 bar cold, which means bleeding it is a different job...
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Mitsubishi Ecodan vs Vaillant aroTHERM for a Semi-Detached Retrofit with Old Microbore
A 1970s semi-detached with 8mm microbore flow and return and a 10kW gas boiler footprint exposes...
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Boiler Lockout Fault 217 Cleared on a Baxi 800 by Repressurising to 1.2 Bar
Fault 217 on a Baxi 800 combi is triggered by low system pressure, with lockout around 0.5 bar....
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Grant Aerona 3 vs Daikin Altherma for Retrofitting a 1930s Semi
A 1930s semi with solid brick walls and cast iron radiators is one of the harder retrofit cases...
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Up to 30% Lower Flow Temperature from Weather Compensation on a Viessmann Vitodens 100-W
A Viessmann Vitodens 100-W left at a fixed 70C flow in a house reinsulated three years ago will...
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Kingspan Kooltherm vs Celotex PIR for Insulating a Warm Flat Roof to 0.18 U-Value
A warm flat roof at 0.18 W/m2K needs roughly 120mm of Kingspan Kooltherm K107 or around 150mm of...
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Vaillant ecoTEC Plus: Why Short Cycling Returns After a Powerflush and How to Stop It
A powerflush can leave a Vaillant ecoTEC Plus firing six to ten times an hour even after the...
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2.5 Degrees Recovered on a Return Loop by Balancing TRVs with a Drayton Lockshield Key
A 2 or 3 degree gap between flow and return on the furthest radiator points to water moving too...
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