One of a friend of mine asked me some tips on how to make sure that the furnace you going to choose is a high-efficiency furnace. Buying a new furnace isn’t easy because you only want to have the best furnace and the furnace that will save you money over the long run.

HowStuffWorks "How To Repair Gas Furnaces: Tips and Guidelines"Upon my research just to help my friends, I found these very helpful buying guidelines so let me share it with you as well.

How do most people go about buying a furnace? First, they call contractors and ask for estimates. To prepare this report, we did too. More than 500 specialists in residential heating and air conditioning told us about their experiences in installing and maintaining heating equipment.

Size matters–a lot. The furnace’s specifications should fit your needs. A furnace that’s too small won’t keep your house comfortable during extremely-cold weather.

Efficiency also matters. Gas is currently the most common heating fuel and most new central-heating systems use gas. How efficiently a furnace converts gas into heating energy is reflected in its annual fuel-utilization-efficiency (AFUE) rating, which is measured as a percentage.

You can read the rest of the article here. You can also read in the source about how to determine if your furnace needs a repair or a replacement.

Repair or replace?

If your gas furnace falters or fails, a few simple procedures may save you the cost and trouble of seeking professional help:

  • If you’re getting low airflow, check the air filter on the furnace; a clogged filter could cut airflow to a trickle.
  • See if there are loose wires or a malfunction in the thermostat. For an electronic thermostat that runs on batteries, try changing them.
  • Are fuses burned out or circuit breakers tripped? If so, power may have been cut to the fan or circuit board.

Continue reading at Consumer Reports.