Franck Wang 
Your room suddenly becomes colder or heat up to the extreme, and you are wondering what is amiss or there is an unexplained increase in your utility bills, and you are at a cross about what went wrong with your HVAC system.
Sometimes, most of your heating ventilation and air conditioning (HVAC) system doesn’t need the service of a professional to troubleshoot for problems.
There are simple ways to find out common problems of HVAC and fix them. You don’t have to fix what you do not have the necessary information or knowledge on, leave that to the technicians. By the way, see here for heat pump and air installation near Madison.
Below are 7 HVAC troubleshooting you should know.
The AC wouldn’t Turn On
One of the commonest problems with HVAC is turning on the AC and the system refuses to on. This could send a jitter into your heart, but panic not it might just be a little problem. Lack of power in the system could be a blown fuse or a tripped circuit breaker. All you’ve to do is to reset the circuit breaker or replace the blown fuse. Also, the problem could be that there is broken or loose wiring which needs the service of a technician.
Low Refrigerant
The refrigerant is what allows your AC to effectively remove heat and humidity from your home. If your HVAC develops leaks in the refrigerant lines, your system will be having problems cooling your home.
Adding refrigerant to the leak is not an effective solution because the problem will still occur sooner than you expected. An HVAC technician needs to determine the point of the leaks and repair any holes found along the line.
7 HVAC Troubleshooting
Frozen Coil
A frozen coil is one of the common reasons why an air conditioner wouldn’t blow cool air. This is caused by a restriction in the airflow, the unit is low on refrigerant, the low temperature outside, and broken parts. You can resolve this by turning off the AC unit and set the fan to run on “auto” on the thermostat. This will melt the ice around the coil. Also, you should check the filter and evaporator coil for dirt and debris checks the ductwork for and disconnect or obstruction, and ensured nothing is blocked. If the issue persists, then surely you have a refrigerant leaking somewhere, call a technician.
Smelling AC
If water collects in your AC unit’s HVAC box for a very long time, there is a risk of bacteria build up in the water that can cause a foul odor resembling vinegar or urine. The problem can be a leaking antifreeze, a nest of wild animals, old filters, or a sneaky pet. You can’t determine the cause of the smell without having the same inspected. Before calling a technician to have a check, first look at the outside unit of your HVAC system, if no animal has entered through there, and also check your filter, it may need prompt changing. But if all the above couldn’t solve the smelly air, then there is a possibility of leaking which needs prompt attention by a technician.
AC Blowing Hot Air
If you notice your AC unit is blowing hot air, and you’ve checked that there is no error on the thermostat like accidentally setting it to ‘heat’ or ‘fan’ then you need a quick call to a technician.
Thermostat Glitches
When troubleshooting for problems and issues with your HVAC system, always check the thermostat. The thermostat is the regulator and the command center of your HVAC and as such must always be in proper condition. If you notice that whenever you set it to a low temperature, but your AC refuses to switch on, know that there is an issue with the thermostat. You need to hire the service of a technician to recalibrate the thermostat or in the worst-case scenario have it change.
Uneven Room Temperature
It is normal for the basement and attic to have extreme temperatures but if you notice differences in room temperature throughout your home. This can be caused by poor insulation, an inefficient HVAC system, and blocked vents. Call your technician.
