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Why Is The Furnace Running Buy Cold In My House

You may have leaking or damaged ducts that are causing the problem. Your ducts are responsible for carrying heated air from the furnace to the various rooms in your house. If they’re damaged or have openings, then some of that heat will escape into places it shouldn’t go, like outside walls and attics, instead of warming up your living areas. You may also have a blocked return vent which could be hindering air flow and preventing your house from heating up properly. A dirty filter is also a common reason why furnaces don’t blow hot enough, so check that first.

Make sure your thermostat is set to a temperature that is warm enough for your house, if not adjust it. You may also want to check for drafts around windows and doors and insulate any openings you find with caulk and weatherstripping.

Is your fan set to auto? Your fan should be set to circulate in order to allow the warm air from your furnace to circulate throughout the house and the vents. If your fan is set to auto, when the furnace first turns on it will feel cold as the heat pushes the cold air through the ducts until warm air comes out. To avoid this , switch the fan to circulate mode and it should keep a more consistent flow of air, keeping the duct the same temperature as the rooms in your home.

It is also possible you have a faulty ignition sensor that is common in older models of furnaces. This can cause the furnace to malfunction and shut off quickly without ever reaching its full temperature, leaving your house cold.

If after checking all of these things your home is still feeling cold, you may need to call an HVAC technician that will be able to diagnose the issue and give you specific solutions for your home. It could be something as simple as cleaning the blower motor or changing some settings on the control board that will fix the problem quickly. However, if there is an underlying problem with the furnace itself, such as a faulty heat exchanger or another part that needs replacing, then it might require more extensive furnace repair.

At Suretech Heating & Cooling we are here to help you solve all your furnace problems. Our experienced technicians will do a comprehensive inspection and provide solutions that fit your needs and budget. Call us today for an appointment!


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SureTech Heating & Cooling will go the extra mile to make sure you’re completely satisfied with the work. We will tirelessly work to make your system the best it can be. We stand behind our work and make it right before we are done.

Furnace Repair

Commercial & residential heating services, 24/7 emergency service available.

Furnace Replacement

Over 20 years of experience installing all types of furnaces, from basic models to high-efficiency units.

Air Conditioning Installation

We install new air conditioning systems from popular brands such as, Coleman, Daikin, and Lennox.

Air Conditioning Repair

We pride ourselves on providing air conditioning service and repair in Clark County.

Heat Pump Services

We perform heat pump maintenance, repairs, and installation of new systems.

Air Purification

SureTech Heating & Cooling LLC for all your indoor air quality needs.


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