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12-17-14, 09:15 AM

Unless you're HVAC certified and have the equipment I personally wouldn't be fooling with air conditioning units that involve working with connecting high pressure tubes, not like that... The pressures going inside these units frequently exceed 100 psi and the stuff really is dangerous.

That having been said...

I believe you can purchase a unit such as those used in a motel room already made, for under a thousand dollars. They're called PTAC's and doing a search on Google reveals several between $500 and $900, might even get a little break in price if you can find reconditioned / refurbished PTAC units.

They're quite efficient, with EER ratings of around 11+
Granted that's not much to compete with newer heat pumps but for single rooms and as a supplement to older HVAC systems it could be quite the money saver over the years.

12-17-14, 09:15 AM	#7
8307c4 Guest Posts: n/a	Unless you're HVAC certified and have the equipment I personally wouldn't be fooling with air conditioning units that involve working with connecting high pressure tubes, not like that... The pressures going inside these units frequently exceed 100 psi and the stuff really is dangerous. That having been said... I believe you can purchase a unit such as those used in a motel room already made, for under a thousand dollars. They're called PTAC's and doing a search on Google reveals several between $500 and $900, might even get a little break in price if you can find reconditioned / refurbished PTAC units. They're quite efficient, with EER ratings of around 11+ Granted that's not much to compete with newer heat pumps but for single rooms and as a supplement to older HVAC systems it could be quite the money saver over the years. Last edited by 8307c4; 12-17-14 at 09:26 AM..