Why Is My Furnace Running But My House Still feels Cold?

When the temperature drops in Manitoba, the last thing you want is a furnace that seems to be running but your home still feels cold. If your furnace is turning on but your house isn't warming up properly, there could be several possible causes.

Some issues are simple to check yourself, while others may require an HVAC technician.

1. Check your thermostat

Before assuming something is wrong with your furnace, check your thermostat.

Make sure:

• The thermostat is set to HEAT

• The tempurature is set higher than the current room tempurature

• The thermostat has power or working batteries

• The fan setting is on AUTO rather than ON

If the fan is set to ON, it may continue circulating air even when the furnance isn't actively heating.

2. Check your furnace filter

A dirty or clogged furnace filter can restrict airflow and make it difficult for your furnance to properly heat your home.

A severly restricted filter can also cause your furnance to overheat and shut itself off before your home reaches the tempurature you've selected.

Checking your filter regularly is a simple part of furnance maintenance that can help your system operate properly.

3. Make sure your vents are open

Take a quick look around your home and make sure your supply vents aren't blocked by furnature, rugs, or other objects.

You should also check that the vents are open.

Restricted airflow throughout the home can make certain rooms feel much colder than others.

4. Check your furnace's airflow

if your furnance is running but the air coming from your vents doesn't feel warm, there may be an issue with the furnace itself.

Possible causes can include problems with:

• The ignition system

• The flame sensor

• The blower motor

• The heat exchanger

• The gas supply

• Other furnance componants

These issues should be assessed by a HVAC professional rather than attempting repairs yourself.

5. Your furnace may be short cycling

If your furnace turns on and off repeatedly without properly heating your home, it may be short cycling.

Short cycling can have several causes, including restricted airflow, thermostat problems, an oversized furnace, or other mechanical issues.

If this is happening frequently, having your system inspected can help identify the underlying problem.

6. Manitoba winters can put your furnace to the test

Manitoba winters can bring extremely cold tempurature, which means your heating system may need to work hard to keep your home comfortable.

If your furnace is struggling to keep up, it doesn't necessarily mean the furnace needs to be replaced. Sometimes a repair, maintenance service, or airflow adjustment may be enough to get your system operating properly again.

A professional assessment can help determine what's actually causing the problem.

When should you call an HVAC technician?

If you've checked your thermostat, filter, and vents and your home is still not heating properly, it's a good idea to have your furnace inspected.

You should also contatc an HVAC professional if you notice:

• Your furnace repeatedly turning on and off

• Unusual noises

• Weak airflow

• The furnace isn't producing heat

• The thermostat isn't maintaining the tempurature

• Your furnace is shutting down unexpectdley

Trying to diagnose or repair gas-fired or electrical furnace componants yourself can be unsafe. When is doubt, have a qualified professional take a look.

Need help with your furnace?

If your furnace isn't keeping your home warm, BJK Mechanical Heating & Cooling can help diagnose the problem and determine the appropriate solution.

Weather your system needs a repair, maintenance, or further assessment, getting the problem checked early can help prevent a small issue from becoming a larger one.

Serving homeowners throughout our local service area in Manitoba.