I have a Goodman PGB042100 heat/air unit and the heat exchanger has cracks I was told? what's the cost?

The gas pressure has to be adjusted at gas valve more gas more heat hotter air coming out of unit

check your breaker or fuses at outside unit. verify you have 24 volts feeding outside unit replace outside unit contactor if you have the 24 volts and not starting.

Unfortunately that means there's a hole in the heat exchanger, particularly in that cell of it. When the main blower comes on the air is pushed into the heat exchanger, causing the flame rollout. A heat exchanger crack or blowout is usually what condemns a furnace for good. Goodmans however, have a lifetime warranty on their heat exchangers, so you'll probably be able to find someone to replace it pretty cheap, or do it yourself for free.

Hello, Usually it has to do with the quality of the install and the brand. If it was not installed properly from the beginning then the equipment will fail prematurely. As far as the heat exchanger goes I have replaced many heat exchangers on Goodmans after 3 years being installed, Goodmans are prone to bad heat exchangers.

Yeah that auto cycling might be due to a contaminated flame sensor. Check out this vid dude:



If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

you correct these heat exchangers are either warrantied for 15-20 years on the units... but the labor usually is not.... been appliance/heating /and air conditioning business owner for approx. 10 years now and in the business a little over 18 years .. the heat exchanger labor usually runs around 600.00- 800.00 when we do these jobs under warranty... it requires diassembly of practically the entire unit in order to do it correctly... and that usually requires unistalling the unit and re-installing in order to get the job done.,,, if the unit is over 12-15 years old we usually recommend replacement ,but does not have to be the finally result... as far as changing it out i won't say it cant be done by a home owner it is alot of screws and like i said requires diassembly of the burner chamber ,combustion motor ,flue piing,gas valve,any safety switches and wiring in the way...the heat exchanger is located on the burner side of the furnace in behind all this is the burner tubes and a plate that has to be removed to gain access to the heat exchanger. it not all that difficult just time consuming... as far as a diagram or step by step instructions i am not aware of any available.. they do have instructions in the new heat exchanger that gives a brief description of what required and a picture or two on it... 5k seems a little expensive too... i am in the dallas /ft.worth metroplex and we charge on the average 3500.00 to install new furnace unless there is special circumstances or going to be a real chore requiring several guys... hope this helps good luck ....

It may help if you increased the blower speed. It sounds like you have a restriction in either the return air duct or in the heat exchanger. Does it help to open the blower door panel. If so, you have confirmed a restriction. How do the burners look? Are they good and blue or yellow? Are the correct orifices being used for the type of gas? I know I am asking more questions than you, but it may help us with the answers. Good luck to you Wade.

Call a service company because you should not smell anything. You may have a crack in your heat exchanger and be getting CO which can kill you.

could be the venting adapter which is abs plastic could be cracked or a hose came off inside the furnace which connects to the secondary heat exchanger or the heat exchanger is bad

try national energy they will give you a price you will need make model and serial number 600 is high you should be able to get it for a lot less