Make sure the power is on and the thermostat is switched to heat.

Have the batteries in the thermostat been replaced recently?

Try to reset the furnace by turning the power switch off, wait one minute, and then turn the switch back on. If that doesn’t work, turn the thermostat to the lowest setting, wait 10 seconds, and then turn the thermostat back up. The furnace should restart itself. If it does not, you may need to schedule a service call.

The easiest way to remember the difference is to remember that a furnace heats air and a boiler heats water. A furnace heats air and then uses a blower motor to move the heated air through a home’s duct system. A boiler, on the other hand, heats water and then uses pipes to move that heated water through the home.

This depends on the type of equipment you have. Most 1” filters should be done about every two months or so. The bigger media filters should be checked every six months and changed once a year, at least.

Based on your equipment, we can help advise you. Or, if you need a new furnace installed, we can advise you on the maintenance needs of the various models that we install and service. For more information about home heating, see our Heating page, our Furnaces page, or our Boilers page.


For some commonly asked questions about ACs, see our Air Conditioners page.


When your home’s air is heated, the relative humidity (RH) of the air drops. This is why the air in many homes without humidifiers is so much drier in the winter than it is in the summer: You are using your home heating system more, which dries out the air.

There are some common physical symptoms that accompany overly dry air. These include itchy skin or eyes, nose bleeds, and aggravated asthma or allergy symptoms. If your home has a lot of static electricity, that can be a sign that the air in your home is too dry too.

We recommend that you change them every one to two years, depending on your water quality. If you need replacement water panels for your Aprilaire humidifier, please know that we can supply model numbers 110, 112, 220, 224, 350, 360, 500, 560, 600, 700, and 760.

For more commonly asked questions about whole-house humidifiers, see our Humidifiers page.

Air Cleaners

If you’re a typical homeowner, you’ll want to check your filters every six months, and change your air filters every year. If you need replacement filters, we can supply filters for the following model numbers: 2200, 2400, and Trion Air Bear brand.

Air cleaners and air purifiers remove pollutants like smoke, dust, and pollen from a home’s indoor air. Some have such advanced filtering technology that they can actually help remove viruses from the air. This type of HVAC equipment can make life much easier for those with asthma, allergies, and other conditions!