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Sustainable tech that earns its place.

Practical guides to repairable and refurbished devices, home-energy tools, batteries, cooling and lower-waste technology. Start with the problem you need to solve, then check lifespan, energy use, support and whether another device is necessary.

Updated July 2026 · Repair, home energy and product comparisons

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articles
Source-backed guides and analysis

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Choose the problem before the product

The strongest choice may be a repair, a refurbished device, one measurement tool or no new purchase at all.

Device lifespanRepair, refurbish or replace?Compare repair cost, remaining support, warranty and expected useful life.Start here Home energyFind appliance energy wasteUse a plug or meter to test a specific load before buying more controls.Read guide Refurbished techBuy a refurbished laptopCheck battery condition, warranty, software support and seller evidence.Read guide Heat and dampChoose a dehumidifierMatch extraction, room temperature and running cost to the damp problem.Read guide Summer coolingCool one room effectivelyCompare shading, fans, window sealing and portable air conditioning.Read guide Larger systemsAssess home battery storageCheck tariffs, cycling, solar generation and payback assumptions.Read guide