Your furnace and your air conditioning system are two central components of your HVAC system, connected and controlled for greater efficiency. During warmer weather, you'll need to turn off your furnace and use your air conditioner instead. Your central air conditioning system is independent of your furnace.
In other words, your central AC is independent of your furnace. The outdoor unit isn't connected to the furnace at all — but they both use the same distribution system (vents, plenums, and ducts) to cycle cool air into your home.
Your furnace and air conditioner are stand-alone components of your HVAC system. Both your furnace and your AC use ducts and vents to circulate air throughout your home. These systems are tied together because they use the same infrastructure. However, they still operate independently of each other.
Your furnace and air conditioner work together to keep your home comfortable. Both units use components of your HVAC system, so upgrades to either can benefit the other and improve energy efficiency overall.
Yes... your gas furnace will work just fine without the condenser. Insulate the wiring with tape. If you plan to reuse those copper lines... plug them as best you can.
The cost to replace a furnace and air conditioning at once is $7,500 on average but could range from $2,500 to $15,000. If your air conditioner has quit, but the furnace still works (or vice versa), it's tempting to just replace the appliance that's broken.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.
If the home includes an electric furnace, that unit will also have its own dedicated breaker. Issues such as low airflow due to a clogged air filter, obstructed air vents in rooms, a failing blower motor, or internal electrical defects inside the unit may be the cause of breaker trips.
The only situation in which it isn't advisable to replace both systems at once is if either your furnace or AC is less than 10 years old.
Even though the furnace is not producing any heat while operating the a/c, it still delivers the cold air throughout your home with the same blower, and passing through the same air filter. This is why, regardless of the season, you should regularly change your air filters.
HVAC stands for heating, ventilation and air conditioning systems. This system is responsible for heating and cooling your home and includes products like furnaces, air conditioners, heat pumps as well as ductwork, thermostats and other home comfort controls.
There are several reasons why your furnace may not turn on. The most common include a broken thermostat, gas line issues, clogged air filters, blocked ductwork, a tripped circuit breaker, and issues with the furnace itself.
No. Your furnace does not run your air conditioner. Both units use the same system of ductwork to move conditioned air throughout your home, but you can have a furnace without having an air conditioner and vice versa. Furnaces are only for heating your home.
The combination of high temperatures and high humidity outdoors and inside your home can both negatively affect the cooling potential of your system. Your AC unit works by collecting and removing hot air from your home. It then returns the air, now cool, to the rooms of your house.
Air conditioners and furnaces over 10 years old are generally what the HVAC industry would classify as “older.” This is also when most indoor and outdoor units stop being under warranty. If both your AC and furnace are more than 10 years old, we would recommend replacing them both at the same time.
Check the thermostat
You should check if it's been set to the correct temperature and also make sure it's set to “cool”. If the AC settings are not right, it won't turn on. You can also check if the batteries in the thermostat are fresh and replace them if needed.
Both AC and furnace use the same thermostat to activate and shut down. The AC and the furnace use the same blower to spread cool and warm air throughout your home.
If both units are approaching the end of their lifespans, replacing both may be more cost-effective. If your AC unit is at the end of its life, and your furnace is only a few years old and performing well, it might make more sense to only replace the AC unit.
A standard policy typically won't cover the cost to replace your furnace if there was a mechanical problem, but you may be able to add an equipment breakdown endorsement for an additional cost that may provide coverage.
The Average Furnace Lifespan
A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.
There are a number of reasons why your air conditioner might be running but not cooling. It could be an issue with the thermostat, the compressor, or the evaporator coils. Or, it could simply be clogged with dust and debris, which is preventing it from working properly.
Yes, you should turn off your AC if it's not cooling.
Check these issues when the unit won't kick on: Check the thermostat and adjust the settings if it isn't set to Cool and an appropriate temperature setting to call for cooling. Examine the house circuit breakers for the AC unit and reset any tripped breakers. Check the air filter and replace the filter if it's dirty.