Heating Guides for Marlborough Homeowners
Clear answers about warning signs, causes, costs and safe next steps, written for homes in Marlborough and nearby towns.
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Why Is My Furnace Blowing Cold Air? Causes and What to Check
First check that the thermostat fan is set to Auto, not On; On runs the blower even when the burners are off. If it is on Auto and the air is still cold, the burners are not lighting or are shutting off early, most often because of a dirty flame sensor, a failed igniter, a clogged filter tripping the high-limit switch, or a blocked vent pipe.
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Furnace Turns On, Then Off: Short Cycling Explained
A furnace that starts and stops every few minutes is short cycling. The usual causes are a dirty flame sensor, an overheating furnace tripping the high-limit switch because of poor airflow, a blocked vent or pressure switch problem, a thermostat placed near a heat source, or a furnace that is too large for the house.
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Heat Pump or Furnace in Massachusetts? How to Decide
Modern cold-climate heat pumps can heat Massachusetts homes through most winter weather, and they also provide air conditioning. A furnace delivers very hot air quickly and works independently of outdoor temperature. Many homeowners choose a dual-fuel setup: a heat pump for most of the season with the furnace as backup on the coldest days.
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