It’s super-easy and customizable.
- Enter home size.
Click the Home Size box, and input the number of square feet you heat.
- Enter the efficiency rating of your old furnace.
If you don’t know, try searching the model number or serial number online. An HVAC technician who has “been around” a while should be able to give you an accurate estimate too.
- Enter the efficiency of the furnace you’re considering
Change that number to see how savings goes up or down as AFUE rises or falls. For example, if you’re considering upgrading from an 80% furnace to a 90%, see what your additional cost savings would be with a 95% furnace.
- Set your State
This is done in the line that begins, “Based on [ ] per CCF…”
Click on US Average and select your state. You might have to scroll down to do so. Our databases automatically adjust for this step and the next for customized information for where you live.
- Set your city or one nearby
This is done in the last line. Click on US Average and click on the nearest large city to you.
AFUE Savings Calculator
Efficiency of Current Furnace:
Your Current Furnace
In Natural Gas Per Year
Efficiency of New Furnace:
Your New Furnace
In Natural Gas Per Year
Savings Per Year
Based on per CCF for (updated in June 2018).
Based on CCF/year for space heating, which is typical for (by the ESC in 2018).
Don’t Overpay for a New Furnace
There are two dangers when getting furnace quotes.
First, you’ll get price-gouging estimates from companies with more business than they can handle. They’ll mark up their rates by 50% to 100%, and if you accept the bid, they will install your furnace while another homeowner gets pushed down the list.
Secondly, you’ll get low-ball offers by unqualified installers that might cut corners including those make a furnace and venting safe. You’ll overpay in the end due to the furnace failing before it should.
The best way to get a furnace and expert installation is to request estimates from several companies. To make the process quick and convenient for you, we’ve developed this Free Local Estimate tool with our partner Networx.
It filters out companies too busy to provide a fair price and those that don’t have proper qualifications, a license or insurance.
Before you begin talking with furnace installers, you might enjoy our guide called Homeowners Tactics When Negotiating with HVAC Dealers. The strategies discussed have proven effective in helping consumers get a fair price from an experienced and qualified furnace professional.