4 Factors That Influence The Cost Of Replacing Your Furnace

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No matter how well you maintain your furnace system, you will require a replacement after ten years. A furnace replacement can take up to 4 to 10 hours to complete. On average, the minimum amount one has to spend on furnace replacement is around $3,000. The maximum cost can be approximately $9,000 or more.

The increase and decrease in the furnace replacement charges depend on four essential factors. These four factors are size, energy rating, source of heating, and installation conditions. 

Amana Heating and Air are here to guide you on these four factors so that you can calculate your furnace replacement cost accurately.

1. Size of Central Heater: The size of the furnace will impact its maintenance, performance quality, and lifespan. If you mistakenly choose a furnace that is too small, you will require replacement sooner than expected. If you invest in a furnace that is too large, you will have to struggle with inefficient heating and frequent repairs.

Generally, the furnace should have 40 BTU per square foot. For instance, if your house area is 1000 square feet, you will have to multiply the size by 40 to know the exact BTU capacity your furnace should have.

However, the increase and decrease in the BTU level also depends on the climate. You can talk with an Amana furnace technician to learn more about the suitable size for your region.

2. Energy Rating: The energy efficiency of a furnace is calculated with an AFUE rating. AFUE indicates annual fuel utilization efficiency. So, if your furnace has a 90 AFUE rating, it means your furnace utilizes 90% of the fuel and exhausts only 10%.

The furnace should have an 85 to 90 AFUE rating for high energy efficiency and low electricity bills. The high-energy efficient furnace can cost you more during replacement, but they reduce the running cost.

Some states also offer incentives for switching to a highly energy-efficient heating system.

3. Source Of Heating: The running and replacement cost of the furnace depends maximally on the heating source it uses. There are usually three types of heating sources used by the furnace.

Out of the three sources, an oil-source furnace is the most expensive and least common. It is due to the high cost of oil. On the other hand, the electric furnace is the least expensive furnace type but has a high running cost.

The most common of the three furnace systems is the gas furnace because it is cheaper than an oil furnace and causes fewer energy bills than an electric one.

4. Installation Conditions: The condition of ductwork, electrical connections, drainage system, etc., also determines the replacement cost. If your house’s ductwork is in good condition, it will make the furnace replacement process smoother and less expensive.

You should also get the drainage system inspected by one of our technicians before scheduling a furnace replacement. You can contact us for a reliable Amana furnace contractor to ensure you have a suitable heating system for your residence.


All these factors play a major role in furnace replacement. If you need more clarification about the size, energy efficiency, and heating source, you can obtain a free consultancy from Amana Heating and Air Conditioning. We offer well-designed, highly durable, and top-quality HVAC systems in various regions. Contact us today!

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