Want better than floor heater on MF 750

The little floor heater doesn't do much and my windows fog up, I have air conditioning that doesn't work, is there any way to tap into those hoses to get the hot air coming from behind me from the bigger AC blower fan ?
 
Might be that the little floor heater is plugging up . Ya may want to pull it and use some irontight (sp) cooling system cleaner in it . and reverse flush it . This stuff works well . I used it on the wifes car and reverse flushed it with a home made reverse flush with one of them drill powered cheap plastic pumps some 5/ 8ths clear plastic tubing a 2 1/2 gallon metal bucket and just half a bottle of this flush and boiling hot water that i kept HOT while i power flushed just the heater core , went from no heat to now we have heat and saved between 1400 and 1800 bucks to replace the heater core to spending around 70 bucks with tax included . Now when i was thinking about getting a 750 Massey i had thought of incorporating a long narrow heater core up in the A/C unit over head . A little research you can find a core that is long narrow and around and inch or two thick add in a water valve and some hose / tubing and it would be more like a tractor cab heater a/c unit . Just a thought .
 
If you never intend to repair/use the AC, there's no reason you can't use the evaporator as a "heater core".

You would need to remove the "expansion valve" from the evaporator inlet and connect a heater hose direct to the evaporator inlet.

That being said, I had a 760 in which we installed an aftermarket "floor heater" and it worked quite well, perhaps it was larger than what Massey supplied.

Is your engine coming up to operating temperature (thermostat working)?

The outside of heater core could be partially clogged with chaff, restricting airflow or inside could have crud in it. Might be worth backflushing it.

As to the fogging windows, you could install a "windshield fan" or two.

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(quoted from post at 11:26:09 12/02/19) It throws plenty heat, sometimes it smokes/steams a bit too. That little fan is a good idea.

School buses have two of those fans. One on the driver side windshield and one on non-driver side, as the built in defroster does not move enough air. Use them in the warm weather too, for some cooling, as there is no ac in school buses.
 
Have you tried running the blower fan same as the a/c uses to see if that moves enough air to help? if the a/c system was working you could turn it on so it just cycled briefly and it would pull the moisture out of the cab thats making it fog,, but maybe the fan would move enough air to help,, maybe you already tried that,,
 
If you are not planning on ever using the a/c system like said remove the expansion valve then slip your heater hoses on the lines and it will put out heat I have a old car under mount a/c unit I mounted in my 580CK 20 years ago that works great
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Did you blow the heater out good? Use to make a lot of difference on my JI Case combines. If you drag in snow on your shoes it would fog for awhile. Use to run on some pretty cool nites and always stayed warm.
 
I mounted a fan to the ceiling of my IH 966 tractor to blow air on me in warm weather, and I turn it towards the window to blow warm air from the heater on the windshield in cold weather. Just recirculating the warm air in the cab helps keep windows free of condensation.
 
If you are getting as you say SMOKE and steam then you have a weeeeeeeeee bit of a leak and this is another reason for window fogging . From what i have been around them BOX heaters in other equipment they will plum roast nuts . Back in 63 when i got my new company tonka toy and the first one in the company with a cab and HEAT and A/C on a brand new Cat D 9 G that little box heater setting on the floor plate off to the right of me on Med . would darn near run you out on a 10 degree day in high winds and blowing snow and it also had two 10 inch fans moving air around keeping the window clear. Now that heater was a little bigger then the one's in a combine cab but the cab was a lot bigger and not as air tight back then . The big leaks were the floor plates . So you may want to pull that hot box and get the core checked for leaks as if i remember correctly they are of a tube design and not a honey comb , i could be wrong on this due to old age and twenty years of not being around one . And i have only run one 750 a couple times . My little massey 300 did not have a hearter as if ya kept the cab closed and only run the blower for the filtered air on low it did two things , 1 it kept the dust out of the cab and 2 it moved the warm air coming off the tin along side of you from the engine as you had radiant heating on them year round . Summers you could bake bread in the cab even with the fan on high and on a 20 degree night shelling corn it would say comfy and only when you made a 10-100 stop and got out did you know just how2 COLD it was out side and you did not linger long doing your business.
 
Would something like this work? Has the fan and all contained right inside it, hooks to your heater hoses. They'll blow a lot of heat in a small space. Used to have them in a lot of old cabs in tractors and construction equipment. If they put out too much heat even with the blower on low, you can put a ball valve on one of the coolant lines into the rear to cut the flow back a little.
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