“I need HVAC help right away! Why is my furnace not heating the house?”

KEY TAKEAWAYS:

Why is my furnace not heating the house? Several things could be causing your furnace to malfunction. Typically, it is a result of some kind of damage.

   – Clogged air filters can restrict airflow, making it difficult for your heater to circulate hot air.

   – A malfunctioning thermostat could also be the culprit. A damaged thermostat makes it difficult to sense temperature correctly, which could be telling your furnace to shut down too early.

   – Your furnace could be short-cycling. “Short-cycling” forces your furnace to stop the heating process before it is finished. This is a symptom of severe furnace damage, and you’ll need to call an HVAC professional right away before the problem becomes worse.

An HVAC technician explains to a homeowner why his furnace has not been heating his house.

Why is there no heat coming from my furnace?

Help! Why is my furnace not heating the house anymore? You’d be surprised how many times we get asked this question. Surprisingly, it’s a pretty common problem. If your heater has suddenly stopped heating your home evenly, then it could be any number of problems. Most of these problems are symptoms of a damaged furnace that is in need of repair. If you experience any of the problems that we talk about in this blog post, then you’ll need to have your furnace inspected by an HVAC professional as soon as possible.

New around here? Welcome! We’re a team of HVAC professionals based in Colorado Springs, and we love educating people about their HVAC units. Our mission is to make HVAC education more accessible to everyone. So, in this blog post, we’ll answer the question that we get asked all the time: why is my furnace not heating the house? Then, we’ll tell you how you can get your furnace inspected and diagnosed by an HVAC professional for free!

Why is my furnace not heating the house anymore?

So, why is my furnace not heating the house evenly? Is it damaged? Will I need to have it replaced? Or can I get it repaired? 

Several things could be causing your furnace to malfunction, including:

  • A clogged air filter. Your furnace has an air filter that must be changed regularly. If the filter is neglected, pollutants can build up on it, eventually causing a blockage. If your air filter is clogged, your furnace won’t be able to push out hot air evenly. This is a relatively easy fix. You can either change the filter yourself or call an HVAC professional to handle it for you.

  • A thermostat malfunction. If your furnace’s thermostat isn’t working properly, then it’s not reading temperatures correctly. You may need to have your thermostat re-calibrated by an HVAC professional.

  • A short-cycling furnace. Short-cycling is a symptom of serious furnace damage. It causes your furnace to shut down before it has completed its heating process. If your furnace is short-cycling, then you’ll need to contact an HVAC professional right away. If left untreated, a short-cycling furnace can break down completely and will need to be replaced.

Why is my furnace not heating the house anymore?

If your furnace is acting up and simple troubleshooting isn’t doing the trick, it might be time to call in the pros. If you smell gas or suspect a carbon monoxide leak, get out of the house and call for help immediately. If your furnace won’t turn on at all even after you’ve tried resetting it, there’s likely a bigger issue at play. If your system is over 15 years old and struggling to keep up, it could be on its last leg. A yellow pilot light instead of a blue one is a major red flag—it could mean there’s carbon monoxide buildup. And if your furnace is making loud banging, rattling, or whistling noises, something inside isn’t working the way it should. These are all signs that you need an HVAC professional to take a look. Waiting too long could lead to expensive repairs or even a full furnace replacement, so don’t put it off. Call a trusted HVAC expert and get it checked out before things get worse.

Get your furnace inspected by an HVAC professional for free!

If you’ve been wondering why my furnace is not heating the house anymore, then chances are, your furnace has been damaged for a while now. The best course of action would be to have it inspected and treated by an HVAC professional. Otherwise, you could have a pricey furnace replacement in the future!

That’s where we can help. As we mentioned before, we’re a team of HVAC professionals in Colorado Springs. If you’re a Colorado homeowner or business owner, then we’d be happy to inspect and diagnose your furnace for free! Learn more about our heating services, and request your free furnace inspection today!