Expert advice on thermostats, HVAC parts, installation, and maintenance.
What a Capacitor Actually Does Your AC system has two main capacitors — a start capacitor and a run capacitor (or a dual-run capacitor that handles both). They store and...
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Breaking Down the Code When you see a thermostat listed as '1H/1C' or '2H/2C', it's telling you how many stages of heating (H) and cooling (C) it can control. A...
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What MERV Stands For MERV stands for Minimum Efficiency Reporting Value. It's a standardized rating scale (1–16 for most residential and commercial filters, up to 20 for HEPA and hospital-grade)...
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Does the T701 Have a Reset Button? You may notice a small hole on the back of the T701 case labeled "Reset." However, this hole is non-functional on the T701...
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What a Condensate Pump Does Air conditioners and high-efficiency furnaces produce condensate — water that drips off the evaporator coil or forms in the heat exchanger. In most installations, gravity...
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Why Does a Contactor Buzz? The buzzing sound coming from your outdoor AC unit is almost always the contactor — the electrical switching component that tells the compressor and condenser...
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The Simple Answer A non-programmable thermostat does one thing: it holds the temperature you set. You turn the dial or press a button, it calls for heating or cooling, and...
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