Why Is My House Not Heating Up?
If your furnace runs but the house stays cold, the heat is being lost or the system cannot keep up. Here is what to look at.
Common Causes
- Dirty filter reducing airflow and heat
- Thermostat set to the wrong mode or reading the temperature wrong
- Furnace short cycling and never running long enough to warm the house
- Leaky or disconnected ducts losing heat in the attic or crawlspace
- An aging or undersized furnace that cannot keep up
What You Can Check Yourself
- Replace the filter
- Set the thermostat to heat and confirm the fan is on auto
- Make sure vents and registers are open and not blocked by furniture
When to Call Air Plus Heating
If the quick checks above do not solve it, the problem needs a trained technician. Air Plus Heating has served Utah County since 1982 with honest pricing, free estimates, and same day and 24/7 emergency service. Learn more about our furnace repair in Utah County, or see all of our HVAC troubleshooting guides.
Related Questions
Why Is My House Not Heating Up?
If your house will not heat up, common causes are a dirty filter, a thermostat set wrong, a furnace that is short cycling, leaky ductwork, or an aging or undersized system. Check the filter and thermostat first. If the furnace runs but rooms stay cold, have it inspected.
Why are some rooms cold and others warm?
Uneven heating usually points to leaky ducts, closed or blocked vents, or a system that needs balancing. We can inspect the ducts and airflow.
Is it cheaper to repair or replace an old furnace?
If your furnace is over 15 years old and needs a major repair, replacement often saves more over time. We give honest estimates on both.
Need HVAC Help in Utah County?
Call (801) 362-5115 for same day and 24/7 emergency service, or request a free estimate.