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We Know: How to Buy a Gas Furnace
Gas Furnaces
In many areas of the country, natural gas is the primary heating source for homes and businesses. Natural gas is
piped into a building from municipal gas lines. Gas furnaces burn the natural gas and provide heat. Modern gas furnaces
are much more efficient than the old octopus style furnace which took up much more space and didn't heat nearly as well.
What You Need to Know Before Buying a Gas Furnace
Before purchasing a gas furnace, consider the following:
- Efficiency is measured by the annual fuel utilization efficiency (AFUE). Use the AFUE rating of gas furnaces to
compare the efficiency of models.
- A condensing gas furnace is less vulnerable to condensation resulting in corrosion.
- Though the furnace may burn gas it also uses electricity to power the fan that moves the hot air through the building.
A fan motor that's variable speed will run more efficiently than a standard speed motor and cost you less to run.
- Duct sealing is usually not included with the cost of installing a new gas furnace but the investment will save
you money in the long run. Consider doing it yourself if necessary.
- Invest in a size-appropriate gas furnace. Bigger is not always better. If a furnace is too big it will cost more overall, but it will also be less
efficient because it'll cycle on and off more frequently. A heating contractor can help you determine a sufficient size
furnace.
- Consider investing in an energy-efficient programmable thermostat for your gas furnace. It will cut down on your
heating costs while maintaining a comfortable temperature.
- Some local governments and utility companies offer rebates for customers who install new high efficiency heating units.
Inquire whether they exist and if you qualify.
Gas Furnace Models
The price of a gas furnace can be dramatically affected by delivery and installation costs. The prices for the following gas
furnace models are only general estimates:
- Carrier/Bryant Plus 90i series: Costs about $3,000.
- Rheem Classic 90 Plus with Comfort Control: Costs about $3,000.
- Trane XL80 Series: Costs about $1,600.
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