Looking to turn up the heat this winter—but not your energy bill? We chose the 7 best space heaters for large rooms of ...

One Reddit user shared how their heat pump window unit kept their room toasty warm, even when it was freezing outside.

The Midea 23” Dual-Flex Heater is designed to balance: tall enough to circulate warmth, fast heating sufficient for most scenarios, and flexible enough to run vertically or horizontally, depending on ...

A Virginia retrofit pairs propane and electric to eliminate resistance heat, cut energy costs, and deliver consistent comfort ...

Your backup heat is supposed to be the quiet safety net in your home’s comfort system, not the star of the show. Yet in many houses, the setup looks perfectly normal until a cold snap hits, the ...

Every product we recommend is chosen through a combination of Primary Research and Secondary Research. As winter settles in and indoor temperatures begin to drop, the question of how best to heat ...

EcoWatt enters 2026 as one of the most talked-about home power-flow management technologies in the efficiency sector, driven by its positioning as a compact, plug-in system designed to support ...

KELVIN stands out as a refined option for spot heating. It is easy to operate, visually appealing, and supported by a strong companion app. The main drawback lies in the mounting hardware, which does ...

It looks a little like a sleek window AC, but a new device from Chinese appliance giant Midea is actually a reversible heat pump that can both cool and heat a home—and it’s designed to heat ...

Once the temperatures start to drop, you may be wondering if you need to cover your AC unit. We spoke to two HVAC experts for ...

Karen is an energy efficiency and sustainability specialist with 20+ years experience. At Which?, Karen cuts through the jargon to uncover the environmental issues that matter most to consumers and ...

Window AC units have their perks. They're small and easy to install, relatively cheap so far as air conditioners go, and they don't use that much power. These pros make them the perfect package for ...