410a or 407c ACCU selection
410a or 407c ACCU selection
(OP)
I am in need of a recommendation on a 410a or 407c 12 ½ ton or 25 ton air-cooled condensing unit. Carrier, Trane, York and McQuay do not offer these products yet. Standard comfort CV use with operation down to 40 degrees F.





RE: 410a or 407c ACCU selection
I looked at the following options
1) Using European Carrier that was 407C, but electrically would be a nightmare in a 60 Hz place.
2) Going custom built, which would be expensive, company like Engineered Air.
3) Field converted from 22 to 407C, which I felt would be an accident waiting to happen
4) Paying York extra money to factory convert their equipment to 407C.
It was moving to option 4, then the client caved in and accepted R22. Money talks.
Take the "V" out of HVAC and you are left with a HAC(k) job.
RE: 410a or 407c ACCU selection
RE: 410a or 407c ACCU selection
Something you might want to look at are the City Multi units from Mitsubishi. They are available in R410A. It is a "zoned" mini split system that you can apply in some really unique and helpful ways. For something of your size you would have a single heat pump condensing unit with multiple indoor units. It will work like a water source heat pump unit in that if you have interior spaces needing cooling and exterior spaces needing heating it will take the waste heat from the interior spaces and use that for the exterior spaces. It obviously isn't right for every application, nothing is, but it's something else to look at. City Multi. If you can take advantage of the multi zone aspect of it, it is extremely energy efficient.
RE: 410a or 407c ACCU selection
RE: 410a or 407c ACCU selection
Good luck it! It sounds like a very interesting project.
RE: 410a or 407c ACCU selection
RE: 410a or 407c ACCU selection
RE: 410a or 407c ACCU selection
RE: 410a or 407c ACCU selection
Take the "V" out of HVAC and you are left with a HAC(k) job.