A full-scale breakdown/shutdown is obvious but many furnace problems start much smaller than a complete failure. All types of gas and electric furnaces can be bogged down with slightly different issues. However, there are common signs to look for that indicate a problem worth addressing. It is always better to request our professional furnace services in Durham Region of Ontario for help sooner than later.

Furnaces are not designed to last forever. Most manufacturers recommend replacing your furnace after about 15-20 years, but there are also some warning signs that indicate that your furnace may be on its last legs. With routine maintenance, such as tune-ups, inspections, and regular filter changes, you can prolong the life of your heating system and keep it in good condition for a longer period of time. One of the most frustrating things you’ll encounter as a homeowner is a furnace that suddenly stops working, leaving you without heat and uncomfortable in your space. Watch for these signs that indicate you need heating repair, since this service could help save you money and a lot of frustration.

A few signs that may indicate your furnace needs repair/service or replacement:

1. Abnormal Increase in Gas and/or Electric Bills

One of the first things to watch for is an increase in gas and/or electric bills, since this could mean that your furnace is no longer as efficient as it should be. If you are spending a lot on utilities, you are wasting money that could be put towards a new and more energy-efficient unit or repairs sooner than later.

2. The Burner Flame is a Flickering Yellow

Ideally, the color of your furnace’s burner flame should a bright blue. This is a good sign indicating that the furnace is working fine. However, an aging or faulty furnace will usually have a yellowish flame. It will flicker often.

This is a warning sign because it means the gas isn’t burning properly. If the flame isn’t the right colour, your system won’t be able to heat up anything at all. Your unit needs the right temperature and flame to be able to do its job.

A yellow flame is extremely perilous because it also indicates there is way too much carbon monoxide in the atmosphere. If you’re worried that this is the case, then you should look for other tell-tale signs of excess carbon monoxide.

If you can spot soot streaks near your furnace, plenty of moisture on the windows and walls or rusting vent pipes, then it’s time to call a professional.

3. Cold Spots / Uneven Heating

During the colder months, if you feel cold spots in certain areas of your house, then your unit is probably nearing its demise. Your furnace is not expelling enough heat to evenly warm up the entire house.

Cold spots are one of the most common signs of aging heaters. Over time, your furnace will lose its capacity to distribute heat around the house, leaving some areas to the biting cold. These could be the bathroom, kitchen, or even your living room.

You may want to get it repaired by a professional, however, the problem will most likely resurface because your unit is simply aging. Hence, a wiser choice is to get it replaced entirely. You can contact the HVAC experts at Joe’s Heating and Air Conditioning to guide you in buying a new reliable and efficient furnace.

While cold spots are alarming, if you notice an ice dam forming on the roof or anywhere near the furnace, that could be an indication of heat leaking. The ductwork might have developed faults and leaks, which causes the heat to escape. Whether it’s the vents, the ductwork, or an aging furnace altogether, you should call a professional if you notice these warning signs.

4. Loud Rattling Noises

If you’re hearing strange rattling, clicking, hissing, or popping noises from the furnace, then the culprit might just be the blower fan. Noises should never be ignored because they are a clear indication that your furnace needs urgent repair or replacement. Don’t waste time and get in touch with a professional.

5. A Few More Possible Indicators

  • Broken or cracked parts
  • Ignition issues
  • Frequent cycling
  • Flickering pilot lights
  • Strange odours
  • Faulty thermostats

Don’t wait to tackle furnace repairs and maintenance. Call your local HVAC professionals at Joe’s Heating & Air Conditioning today at (905) 434-6788. We offer 24 hour, 7 days a week repair services to the Durham region of Ontario, including Oshawa, Whitby, Brooklin, Port Perry, Ajax, Bowmanville, and surrounding areas.



No matter what kind of cooling, heating or water heater system you have at home, our experts are qualified to make repairs and provide you with the right solution for your home.  We are here for you 24 hours, 7 days a week.



Our maintenance & protection plans provide you with peace of mind knowing if a breakdown occurs, we have you covered!