How’s your boiler going to deliver warmth without heat? You turn it on, it doesn’t fire up. You turn it up, and nothing happens.
Okay, we’ve established one thing: there’s a problem with your boiler. But is the solution clear, or are there bigger problems beneath the surface? It’s tricky to say over a blog post, but we’ll do our best.
With a boiler not igniting, it isn’t as simple as checking the pilot light. Most homeowners know how to do that, and many boilers don’t use pilot lights anymore. These other problems could be getting in the way of you, and a warm home.
The most common nugget of wisdom we impart to our customers to help them help their furnaces is to regularly change the furnace filter. This filter is usually located on the HVAC cabinet at the point where the return air ducts connect to where the blower is located. The filter does the job of blocking debris coming through the return air ducts so it won’t enter the cabinet and contaminant the furnace, blower, and other parts of the HVAC system. This filter isn’t self-cleaning, and after one to three months the congestion in the filter will start to cause problems and even lead to damage to the furnace. 
We want to start this blog with an assurance: gas furnaces are not inherently dangerous appliances. They’re found in millions of homes across the country, dutifully keeping families warm. Provided they receive regular maintenance and professional repairs as necessary, they can run at high degrees of safety throughout their service lives.