Cleaning Furnace Secondary Heat Exchanger

Secondary condensing heat exchanger.

Cleaning furnace secondary heat exchanger.

Usually that means neglected burners that are dirty or corroded but it could be other things. A shady repair technician may try to trick you into believing the heat exchanger in your furnace is cracked and leaking deadly amounts of carbon monoxide into your home. In condensing furnaces there is a secondary heat exchanger made up of small tubes that receive the exhaust gases once they have gone through the primary heat exchanger. Usually i d guess that lack of regular maintenance led to the sooting problem.

Place your vacuum suction below the reheat coil and using air pressure carefully blow the coil clean. Secondary heat exchanger cleaning. I suggest a mask and goggles for safety purposes. A heat exchanger in your furnace or boiler is what heats either air or water that is then used to heat your home.

That was best avoided. A home heat exchanger is less likely to fail due to dirt and grime then a heat exchanger in a car or ship. A rheem rgda model furnace is used for the demonstration. If you crawled in then just take a vacuum cleaner with you and crawl in and clean away also a long handled brush will help.

They will push you hard to either get it fixed immediately or replace the unit entirely on the spot. Here are a few scenarios where duct cleaning may be necessary. Remove these with a screwdriver or ratchet in order to take the fan out. To the best of my knowledge this unit does not have a secondary heat exchanger as it only has one heat exchanger.

Beware the fins of the coil are easily bent so keep your air pressure a few inches away from the coil surface. The heat exchanger is connected inside the furnace or boiler with metal tubes that transport the water and air exchange. Most build up will be on the blower side or bottom of the reheat coil. Cleaning the secondary heat exchanger in a condensing furnace is usually difficult and a mess.

You can wrap a small piece of tape around each wire and label it to make reassembly easier just make sure to remove the. Some fans are held in by screws or bolts. A demonstration of how to clean a heat exchanger on an older draft hood style gas furnace.