It is a costly decision to replace a furnace and an air conditioner at the same time, but to ensure that your air conditioner operates at its rated efficiency, replacing both simultaneously is recommended. 

Here, we will see why the best choice is to replace your air conditioning and furnace simultaneously.

Two main units consist of a split AC:

  • The external unit includes the compressor & condenser coil.
  • The interior consists of the blower and evaporator coil.

However, the air conditioner must use the blower motor, so only a simultaneous replacement of the furnace is how the new air conditioner performs at its rated efficiency.

Substitution of the outdoor unit and abandonment of the old blowers lead to reduced efficiency, premature failure, and other problems. Therefore, you should always replace both air conditioning components at the same time.

Remember always that it will cost about $2,000 to $5,000 to replace a furnace by itself. The addition of a furnace during your air conditioner replacement will cost much less, between $1,000 and $3,000.

Let’s see why it is the best choice to replace your air conditioning and furnace simultaneously:

Age of unit: 

It’s crucial to evaluate the age of the other components of your HVAC system if you’re only replacing one. An air conditioner should be updated every 10 to 15 years, whereas furnaces can last up to 20 years. 

Is the device you’re not replacing nearing the end of its expected lifespan? It might be more cost-effective to do both simultaneously to avoid a second service call or an emergency repair.

Equipment costs get decreased:

In the long term, replacing both your furnace and air conditioner with units that have matched systems could save you money. Matching systems typically use the same air handler, lowering equipment costs and energy use.

Technological advancements:

You’ll enjoy the benefit of having the latest technology on replacing your furnace and air conditioner with newer units. Both new units will collaborate to maximize energy efficiency and savings.


Since the two systems are designed to work together, having a matching system is advantageous. A warranty on a matched system may provide extra coverage for a longer period in some circumstances.

Seasonal benefits:

Consider the advantages of upgrading your air conditioner during the coldest months of the year, even if you only need to replace your furnace. It’s a good idea to replace your air conditioner during the winter. Also, when demand is low, air conditioning prices may be lower!

With the assistance of well-trained experts, Total Comfort Inc. offers all types of ac- and furnace-building services to maximize the quality of furnace service in Hemet, CA

Our highly qualified service professionals are ready to offer furnace repair in Rancho Cucamonga at reasonable prices directly at your doorstep.

You can send your query through email at: Feel free to contact us at (844) 824-4247 if you have any problems with your ac or furnace.