4I 48v / 24v DC-Direct Mini-Split Solar Off-Grid Air Conditioner Heat Exchanger - 28 SEER

Our maximum efficiency 48v DC variable speed heat exchanger air conditioners are the MOST efficient made worldwide! Power them exclusively from solar. Work with an Electrical Engineer. Made to our specifications.  Cost-Effective $1990-$2,590 per zone - No ducts needed! Incredible EER 5.67 W/W or 15.79 BTU/hr/w ~ 28 to 32+ SEER (even 20% more efficient when operated at half capacity) Compare to AC and AC/DC hybrid mini splits with EER 3.5 W/W or 12.5 BTU/hr/w ~ 19 to 21 SEER or even worse 10 to 14 SEER ducted residential central air heat exchangers! That's 1.5x to 3x better energy efficiency.  +10% DC to AC conversion loss if you power an AC heat exchanger from solar panels through micro-inverters +20%-10% for AC to DC and possibly DC back to AC conversion loss when powering an AC/DC Hybrid Inverter Mini-Split from AC +21%-25%  conversion loss if you store the AC energy with a battery charger (8%-15%  loss) in high-efficiency Lithium DC batteries (3% loss), and then use it later through a DC to AC Inverter (+8% loss) Ducts add 20%-30% loss if they are well-maintained.  Add more if any air leaks. You can see how conversion losses can quickly add up to 50% loss in an AC-centric system before you even use a watt!  Our 48V DC-Direct heat exchangers, when powered from DC solar panels through an efficient MPPT DC-DC solar charge controller, use 96%-98% of the power produced.  When powered from AC-Grid through a battery charger or our optional 110V AC to 48V DC converter (no battery needed) they use 92%+ of the power delivered. That's 12%-16% more efficient use of AC power compared to most efficient AC and AC/DC hybrid mini-splits, before taking into account the machine is 1.5x-3x more efficient. Hurricane or Ice Storm power outages: If you have an on-grid home with central air, you can keep it, but by adding one 12,000 BTU to your master bedroom, you will have air conditioning during 2 weeks of power outage after a hurricane or heat in the North after a power outage from a blizzard or ice storm. Add a 24,000 BTU to your kitchen/dining/living room and keep your central air as a backup while experiencing all the energy savings. If you only cool 1-2 bedrooms at night and do not cool those 2 bedrooms during the day, you might cut energy use by 50%! 50% of that 50% from 2x better efficiency means with this system, you could use only 25 watts for every 100 watts your old whole-house cental AC system required with similar comfort!  Cut the cord and experience true freedom off-grid in complete comfort without running a generator! Be anywhere in the wilderness, on an island, in a boat on anchor, or far from expensive RV campgrounds and crowded marinas. Perfect for boats, RV's, tiny houses, and on-grid homes all year but especially after a hurricane. Stocked 48v DC - 24,000 BTU - 7200 Watts - 3 HP - 2 Ton - 30A  1300W (200w-1520w)  48v DC - 12,000 BTU - 3500 Watts - 1.5 HP - 1 Ton -16A 700W (120w-930w)  Special order. 2-3 month lead time 48v DC - 9000 BTU  48v DC - 6000 BTU  24v DC - 12,000 BTU 24v DC - 9,000 BTU  24v DC - 6,000 BTU  Each room or zone is controlled completely independently of the others. Incredible energy savings when you only turn on the rooms you are using Cool only the kitchen or office you are occupying by day completely from solar while storing extra energy in batteries for the evening Cool one room up to 16 hours from our 48v Lifepo4 280ah 15kwh Battery (10'x15' bedroom, hot climate, poorly insulated = 12,000 BTU) or 2 smaller rooms for 8 hours (equivalent to 2 Tesla Powerwalls) Reliability- Should there be a failure in any one zone or room it does not affect any of the other zones. Supplement cloudy days or when you have guests with a small, inexpensive 1-cylinder DC Battery Charging Generator that Automatically Starts up when Batteries Get Low and Automatically Shuts down when the batteries are 90% charged.