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Signs Your Old Furnace Is Costing You More Than You Think
Your furnace plays a critical role in keeping your home warm and comfortable, but an aging or inefficient unit could be draining your wallet without you realizing it. Many homeowners continue using outdated furnaces, unaware that rising energy bills, frequent repairs, and declining performance could be costing them far more than a replacement would. Here are the top signs your old furnace is costing you more than you think.
Have you noticed a steady increase in your heating bills despite using your furnace the same way? Older furnaces become less efficient over time, working harder to heat your home. A high-efficiency furnace (with an AFUE rating of 90% or higher) can significantly reduce your energy costs compared to an outdated model.
Compare your recent utility bills to the same time last year. If your costs have risen without extreme weather changes, your furnace may be the culprit.
If you’re constantly calling an HVAC technician to fix your furnace, those repair bills can add up quickly. While routine maintenance is essential, an older furnace that requires frequent fixes may be more expensive to maintain than replacing it with a new, energy-efficient unit.
If repair costs are more than 50% of the price of a new furnace, it’s time to consider a replacement.
Do you have rooms that always feel colder than others? An aging furnace may struggle to distribute heat evenly, leaving some areas of your home too cold while others are too warm. This inefficiency not only affects comfort but also forces your furnace to work harder, increasing energy usage.
Check for inconsistent temperatures throughout your home. If certain rooms are significantly colder, your furnace may be failing.
A furnace that runs nonstop or cycles on and off too frequently may be struggling to maintain the set temperature. This overworking leads to excessive wear and tear, reducing the furnace’s lifespan while increasing energy costs.
Unusual sounds like banging, rattling, or screeching often signal internal issues, such as loose components, failing motors, or cracked heat exchangers. Additionally, strange smells—especially a burning or musty odor—could indicate overheating, dust buildup, or even mold growth in your furnace system.
Most furnaces last between 15–20 years, but as they age, their efficiency declines. If your furnace is over 15 years old and showing signs of wear, upgrading to a modern, high-efficiency unit can save you money on repairs and energy bills.
Look for the manufacturer’s label on your furnace or check your owner’s manual to determine its age.
Older furnaces can contribute to poor indoor air quality by circulating dust, allergens, and mold spores throughout your home. If you or your family members are experiencing increased allergy symptoms, dry air, or excessive dust buildup, your furnace may be the cause.
Consider upgrading to a furnace with a built-in air filtration system or pairing it with a whole-home air purifier for better air quality.
If you’re experiencing multiple issues listed above, it may be time for a furnace replacement. Investing in a new, energy-efficient furnace can:
✅ Lower your energy bills
✅ Improve home comfort and air quality
✅ Reduce repair and maintenance costs
✅ Increase the overall value of your home
Don’t wait until your furnace fails completely! Contact a professional HVAC contractor today to explore your replacement options and start saving on heating costs.
We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.
Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!
Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.
We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!
TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!
Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!
Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.
I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. Ive used the company in the past for my furnace so I was happy when I recognized Greg at my front door. Hes great and the service is always top notch. Id highly recommend using twintech for honest, superior service in the Durham region. Thanks!
I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!
Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!
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We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.
Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!
Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.
We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!
TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!
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