Residential HVAC - 4 ton to 2.5 Ton change-out

[@diyhvacguy]

Nice work bro! I dont envy the attic jobs. Thankfully in Utah, there is like next to zero attic systems. Mostly basements or sometimes crawlspaces. Keep on keepin on!

[@mikerefrigeration5736]

Thanks a lot for the comment!

[@SpencerDavidson-s9o]

Btw great duct running too, looks awesome im a big guy so i tend to stick away from installs, im service only for the most part and just actually switched over to commercial. Where are you guys based out of? This vid just popped up in my feed

[@mikerefrigeration5736]

No worries man I understand. Me and my father are both 5 ft 4 so don't mind attic jobs here and there. We do commercial/service and refrigeration mostly. We only do residential installation for the most part (to avoid needing man power). Thank you for the comment.

[@SpencerDavidson-s9o]

@@mikerefrigeration5736 of course man great so see actual responses you never get this type of intercommunication from KZbin anymore proper good feed back amazing man

[@jacobboeschen6391]

How did you determine to go with a 2.5 ton?

[@mikerefrigeration5736]

I counted each bedroom on a notepad and seen what I would put for a register and added all the cfm together into a number. Came out to approximately 1000cfm. It's and old school way sizing systems.

[@jacobboeschen6391]

@@mikerefrigeration5736 so you went with a 400 cfm/ton approach rather than conducting a manual J load calc and selecting equipment via manual S parameters?

[@mikerefrigeration5736]

@jacobboeschen6391 yeah. Do you do that on every job? How much additional time is to perform a load calculation? I would be interested in learning how to do load calculations. Although the average customers budget is a concern. I do size my flex for .05. The problem is the customers budget. Residential is a tough market here in RI. Flex wasn't even to code on this job. It was r6 instead of r8.

[@SpencerDavidson-s9o]

I never considered solder on hvac in residential 😂 just trained different. Will need to try it next time rather then carrying around my ace/oxy everywhere. And yeah 4 to 2.5 might be drastic seems like they were oversizing to oversell. Also prolly complained due to humidity up there during the summer

[@mikerefrigeration5736]

Soldering is the best option on soft linesets where you're doing minimal joints imo. Brazing is always a must. But solder when you can. Makes life easier. Here in Rhode island, a lot of guys stay brite 8 here.

[@Kevin-mm6xm]

Why the change? 4 ton to 2.5 seems drastic?

[@mikerefrigeration5736]

The house was only 1000 sq ft and well insulated. I counted all my registers and only came up with 1000 cfm. The last installer oversized tremendously

[@s.ep30]

that electrical work is horrendous, just strung across those joists

[@s.ep30]

good work on the unit though

[@mikerefrigeration5736]

Lol my father and I were saying the same thing.