
Why Does My Thermostat Say Check System?
Modern HVAC thermostats are wonderful devices. Digital technology has made them โsmartโ and given them the ability to communicate with your furnace and/or air conditioner.
Get expert tips on reasons your AC unit leaks water, how central heating and cooling works and why your indoor air quality is bad. Our blog is a combination of resources that our clients have found useful in improving their homes heating and air conditioning.ย

Modern HVAC thermostats are wonderful devices. Digital technology has made them โsmartโ and given them the ability to communicate with your furnace and/or air conditioner.

Your furnace produces a lot of hot air but itโs not a good thing when it gets too hot. Yes, thatโs right, the furnace in

Anytime you burn fuel of any type you create deadly carbon monoxide gas. So why doesnโt the furnace in your Illinois or Northwest Indiana home

Thereโs likely nothing more important to you than your Illinois or Northwest Indiana home and the health and comfort of the people who live there.

Has it happened to you yet this winter? The wind is howling, and the snow is blowing. Suddenly the lights start to flicker and then

A majority of Illinois and Northwest Indiana homes have gas furnaces. Merts Heating & Air Conditioning gets many comments and questions from our customers about