Bigger air unit

[Gourdlady]

Wondered if you guys could weigh in on this. I have a double wide 50x24 mobile home and we had a front room added on that measures around 12x15. We need to get air and heat out there. I had to call a repairman the other day as my air unit went down and was questioning him about whether my 3 ton unit would be able to handle the extra room. He suggested upgrading to a 3.5 ton unit. I know mobile home duct work runs a bit different than traditional built homes so I am wondering if just going up a half ton is going to suffice and also if my mobile home wiring will handle this increase. My home is a 1990 Fleetwood. Any thoughts would be appreciated.
Thanks

[Robert]

Hi,

Need to do a Manual J Load Calculation to know what size is truly needed.


Go to hvac-talk.com , then click on HVAC Calc at top for a good homeowner version.


Wiring and duct should be fine with an upgrade.


Thanks,
Robert

[Gourdlady]

Thank you Robert. I'll check into what you have shared.

[Robert]

Hi,

You're very welcome, happy to help. Wanted to add that your furnace should have info on it in data sticker or nameplate or on front of blower housing stating what size a/c the furnace and duct can handle.


Most are 4 tons, so should be ok.



Thanks,
Robert

[Gourdlady]

Okay, I'll check that. I have the paper work on the furnace and air unit too, so I'll look at those too. The repair guy said he thought a 3.5 ton would work but I am thinking if my wiring and all can handle it maybe a 4 ton is better. The 3 ton that we have does struggle in the heat of the day. I have to pull the shades down to help and we use ceiling fans too.

[Robert]

Do the Manual J Load calculation to know for sure what size is needed.


Thanks,
Robert