Exterior photgraph of a house with uPVC windowsExterior photgraph of a house with uPVC windows
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The Home Improvements That Cancel Out Energy-Efficient Products

You've invested in energy-efficient windows, so why are the bills still high? With everyone looking to save, it's worth knowing that some home improvements quietly cancel out the gains your efficient products deliver. Here are the key areas to watch.

Your heating system. Upgrading it can save money, but poorly configured controls fight your glazing rather than working with it, heating rooms that hold warmth perfectly well, or running schedules that ignore how your improved home actually performs. After any glazing upgrade, revisit your thermostat settings; most homes can turn things down.

Extensions and conversions. A beautifully insulated main house loses its advantage if a poorly insulated extension, garage conversion or porch is bolted on. Any addition should meet the same thermal standards as the products you've invested in, otherwise it becomes the hole in the bucket.

Ventilation mistakes. Blocked trickle vents and sealed-up airflow cause condensation and damp, while extractor fans left running dump your expensively warmed air outdoors. Ventilate deliberately, not accidentally.

The lesson: energy efficiency is a whole-home system, and it's only as strong as its weakest part.

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