If your heater won’t fire up or the AC is blowing warm air, you’re probably wondering why your HVAC has stopped working. The good news is many problems are easy to spot and fix without a technician. Below are the first things you should check before you pick up the phone.
First, write down exactly what’s wrong. Is the unit not turning on at all, or is it running but not heating or cooling? Does it make a weird noise, or is there water pooling around it? Knowing the symptom narrows down the possible causes and saves you from guessing.
For example, a heat pump that runs but won’t cool often points to a refrigerant issue or a frozen coil. On the other hand, an HVAC that won’t start could be a simple thermostat mis‑setting or a tripped breaker.
Start with the power. Make sure the circuit breaker for the HVAC hasn’t tripped and that the outdoor unit’s disconnect switch is on. Resetting a breaker takes under a minute and clears a lot of false alarms.
Next, look at the thermostat. Many problems stem from a dead battery, wrong mode selection, or an outdated schedule. Replace the battery, set the mode to “heat” or “cool” as needed, and see if the unit responds.
Check the air filter. A clogged filter restricts airflow, causing the system to overheat and shut down. If the filter looks dirty, replace it with a new one – you’ll notice a difference instantly.
Inspect the outdoor unit. Clear away leaves, grass, or debris that might be blocking the condenser coils. A quick hose‑down can melt ice buildup that often stops a heat pump from cooling.
If the unit still won’t work, listen for the fan. A humming sound without the fan turning means the motor might be stuck or the capacitor is dead. This usually needs a professional’s touch, but you can verify by turning the fan switch on the thermostat to “on” and seeing if the fan spins.
When you’ve run through these steps and the problem persists, it’s time to call in the pros. Bognor Regis Appliance Repair Experts can handle refrigerant leaks, electrical faults, and compressor failures safely and quickly.
Don’t try to open the sealed refrigerant circuit yourself – it requires special tools and certification. Same goes for gas‑fired furnaces; a gas leak is a serious safety risk.
In summary, power, thermostat, filter, and outdoor unit are the four quick checks that solve most HVAC hiccups. If those don’t bring your system back, a qualified technician will diagnose the deeper issue and get your home comfy again.
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