Why is my thermostat making a clicking sound?

The click you hear from your thermostat is probably the electrical relay triggering the power to the furnace, air conditioner or heat pump. It is a normal sound. The sound should be soft and barely noticeable.

How do I get my thermostat to stop clicking?





An easy fix is getting additional insulation around your thermostat. This can dampen the sound from the click to keep it from disturbing you. You can also take a look at smart thermostats with integrated circuits. Since these do not use electro-mechanical relays, they run silently.

Why is my underfloor heating making noise?

Water underfloor heating systems become noisy when it has a lack of water inside, often caused by leaks or the system venting pressure. Electric underfloor heating systems rarely make any noise at all and will usually only start buzzing when approaching their maximum age.

Should my thermostat click?

All thermostats make a clicking noise when activating the heating or cooling system. The noise does not mean that you have a problem, and it should not be very loud. Sensitivity to noise varies among individuals as well, and the sound might be more noticeable to you than to others.

Why is my thermostat clicking but not turning on?

Clogged air filters are one of the most common reasons a thermostat clicks but AC does not turn on. A filter cleans the air before it circulates throughout your home, trapping dirt particles, dust, and pollen. Over time, these contaminants will clog the filter, limiting airflow to the HVAC system or furnace.

Do capacitors click?





Clicking is the sound of the over-current (or over-voltage) protection circuitry operating. Common causes are the capacitors being ‘dried out’ and simple replacement of the electrolytics often affects a cure.

Why does my heat pump make a clicking noise?

Clicks at start-up: The first time you turn on your heat pump after a long period of inactivity, you will probably hear a clicking noise; this is normal and should vanish soon. But if it persists, or you hear it at other times, it may mean a problem with the start capacitor.