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CHANGE A HEAT EXCHANGER ON MERCRUSER - Heating & Cooling

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Heat exchanger replacement for carrier weathermaker 8000


After 18 years of service, it is not cost effective to just replace the heat exchanger. Go the complete replacement route. There may be a utility company incentive to do it.

Jun 06, 2016 | Carrier Weathermaker 8000 Gas Furnace 125k...

2 Answers

Where is the heat exchange in a rheem pool heater located ?


The PVC plumbing is hooked into the front header, the front header is attached to the heat exchanger. The heat exchanger looks like copper finned tubes with a steel plate on each end. You need to disassemble heater working from top down to get to the exchanger. A skilled tech can replace an exchanger in under one hour service call.

Aug 19, 2014 | Rheem 266K to 399K BTU Swimming Pool...

1 Answer

Can you install class-A cotton foil-backed insulation in a furnace heat exchanger duct


HVAC Insulation Cotton thermo acoustic duct wrap reduces noise and increases HVAC...

None of these products are used INSIDE the heat exchanger. If the problem is a cracked heat exchanger, you may be able tp purchase replacement parts to repair it

How to Fix Cracked Furnace Heat Exchanger DoItYourself com


The heat exchanger must be free of cracks and holes due to the potential of carbon monoxide leakage. You can probably make a short term repair with sheet metal and high heat furnace refractory cement, but that is a quick fix only.
Please be aware of the potential for a lethal situation due to carbon monoxide poisoning.

May 26, 2014 | Cozy (W352E) Heater

1 Answer

No heat blinking light 4 times trips reset button


It may be either a blocked chimney or a blocked heat exchanger. If you have an air compressor you can try blowing out the heat exchanger. Using a shop vac also works or both. Using the air compressor to blow out the heat exchanger and the shop vac to vacuum up what comes out. A lot of the time these units are in places were mice and other rodents can get into them and build nests or store seeds or whatever in the exchanger part of the heater. If the exchanger or vent are even partially obstructed the flame doesn't get pulled through the exchanger well enough and heats up the rollout switch causing it to open.if there is no vent terminal installed on the vent a strong wind can also cause the same thing. Hope this helps.

Dec 13, 2013 | Dayton (4LX44) Gas Heater

3 Answers

Leaking heat exchanger


balance chemicals in pool and replace heat exchange

Jan 08, 2013 | Teledyne Laars HEAT EXCHANGER ASSEMBLY,...

1 Answer

We need to change the heat exchanger for my Goodman Heat Furnace model no.-GMP 075-3


Not an easy task! Take many pictures as well as draw out and mark which wire went where. You will have to remove everything from inside the cabinet to get to the heat exchanger. It may be easier to replace the furnace. If you are paying a professional to do the exchange, figure three hours if they have done it before, if not figure 5 to 6.

Apr 02, 2011 | Goodman Heating & Cooling

1 Answer

Gas backup wont light. repairman said need new heat exchanger. approx 60 days ago replaced all burners and it woked ok they got it running for 1 night now it is out again. if the xchanger is bad why did...


I would only assume that now you have taken out an over heating sensor. When a heat exchanger goes bad it is a very dangerous situation because now you are pumping carbon monoxide in your house along with your heat. A heat exchanger is a baffle that hot gases pass thru, heating up the exchanger along the way and expelling carbon monoxide out the exhaust/chimney. Bad exchangers crack along seams or burn holes thru allowing the exhaust to mix with the blower air and in time this could cause carbon monoxide build up in your house. This cracking also lets hot exhaust in to the furnace and can burn up over heat protection, wiring and possibly cause a house fire. Please change out the heat exchanger or entire furnace, there is no price to replace a human life.

Dec 20, 2010 | Heating & Cooling

1 Answer

014 code


A 14 code means the thermal fuse (white wire which wraps around the heat exchanger) has snapped. This occurs if the heat exchanger reaches a dangerously high temperature. To correct this error code you need to replace the thermal fuse and keep the heat exchanger from over heating. Typical reasons the heat exchanger over heats are:

1) scaling in the heat exchanger
2) combustion chamber dirty and burning hot

Oct 07, 2010 | Noritz N-069M-DV, N-084M, and N-084M-DV...

2 Answers

Coolant leaking into car from passenger side


Coolant passes through the heat exchanger below the dashboard heating the interior air from the engine heat. The heat exchanger or its pipe is leak somehow.
A temporary measure is to change the heat/cool knob to cold position. This disconnects the radiator.
Note: If the leak is before the valve then it will not stop leaking.
Also if you use the heater then You need to get the pipe repaired.

Aug 12, 2009 | 1986 Chevrolet Cavalier 2 Door

2 Answers

I have a Coleman/Evcon Presidential ser# 074878. The plumber says the Heat exchanger is cracked. Is this something I can fix myself or is it less expenxive to buy a new furnace?


The heat exchanger is a bear to change. depending on the age of the unit it might be more practical to replace the unit. However unless you trust this service tech I'd get a second opinion, because it is rare that a heat exchanger will crack, plus by law he or she should have shut the furnace down do to carbonminoxde. Especially rare in Coleman Evcon series units.

Oct 21, 2008 | Heating & Cooling

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