HOTSPOT ENERGY Solar Air Conditioning
Heat Recovery Water Heating & Pool Heating
Home Products Technology FAQ About Us Dealers Contact Us
  Main Menu
  Solar Air Conditioner / Solar Heating (AC-DC)  

DC Air Conditioner
(All-DC, for off-grid use)
Ultra-Efficient Chiller
Air Conditioner/Heat Pump
DC Inverter PTAC Hotel Air Conditioner
DC Inverter Portable Air Conditioner
Heat Recovery
Swimming Pool Heater
Solar Pool Heating Panels
Commercial Heat Recovery Water Heaters
Residential Heat Recovery Water Heaters

For AC/Heat Pumps

For Walk-In Coolers/Freezers

For Display Coolers/Freezers

  green-arrow  Chilled Water / Hot Water Buffer Tanks
  green-arrow  Solar Heat Pump Pool Heater & Chiller
  green-arrow   Corn Glycol
  green-arrow   Solar Heating
  green-arrow   Air Conditioner w/ Built-in
Free Hot Water Circuit
  green-arrow  LED Fluorescent Tube Replacement
  green-arrow  Pool Heat Exchanger
   Heat Recovery Controls
   Heat Recovery Valves
   ROI Calculator
   Heat Recovery Tanks
   Heat Recovery Remote Units
   Pre-Heat Tanks
    Tank Adapter & More
    DC Air Conditioning Systems
    Performance Monitor
    HRU System Designs

Solar Air Conditioner Heat Pump

energystar certified solar air conditioner ahri logo

CEC certified solar air conditioner

wifi logo


Click here to download the solar AC specification sheet.

solar hybrid air conditioner ADC12b

This is the 4th generation solar air conditioner we've all been waiting for - designed for low cost, easy installation and a fast payback. This unique solar air conditioning technology requires no batteries, no inverter, no controller - just plug in the solar panels and start saving up to more than 90% on daytime cooling or heating costs.

During the day it runs primarily on solar power and only uses small amounts of power from the utility company as needed. Hybrid operation eliminates the need for batteries and allows 24 hours per day use of the system. The system primarily uses solar power, and mixes it with normal AC power.   solar AC indoor unit
ACDC12B IDU (Indoor Unit)

For home or office use, this system will cool an area for pennies with 90% or more of the energy coming from sunlight. In addition to cooling, the ACDC12b solar heat pump will provide solar powered heating, operating all the way down to an outside ambient temperature of 5F. No matter how far north or south you are, this is the right system for you.

ACDC12b solar air conditioners need no batteries, and only need two or three PV panels to deliver a huge savings. During the day, when air conditioning is needed the most, you can operate this unit with very little draw on your utility meter. At night, you continue to save due to the >SEER 21 rating on this unit. The mini-split air conditioner design allows you to put solar cooling into the area where it's needed the most and avoid the security issues of an unsightly and noisy window unit. If your location needs heat during the winter, take a full 1-ton of the daytime heating load off of your main heating system and get a head start on evening heating requirements.  And because it's a ductless system, it allows 100% of your heating or cooling to be delivered to where it's needed without the loss that occurs in a ducted system. Note - this is not an "off-grid" unit, 220v utility power is required. If you have no AC power and need an off-grid solar AC click here.

Solar Air Conditioning Cooling & Heating Augmentation
Augmenting a space heating or cooling system with solar makes perfect sense. In addition to heating or cooling a small area, it allows you to add capacity to an existing system, or reduce the load on an existing system, either or both of which can save you money and add comfort. Solar augmentation also allows offsetting of higher daytime electricity rates and reduces the amount of early evening catch-up required by the normal system. The ACDC12b hybrid solar air conditioner allows you to add comfort without adding cost, and can sharply cut your daytime heating and cooling bills.

How It Works

solar air conditioner system diagram


The ACDC12b installs just like a normal minisplit air conditioner, then you connect the solar panels using industry-standard MC4 connectors. You can use 1, 2 or 3 normal solar panels (but not 12v "battery charger" panels) of 230w-300w each for a total of up to 900w. You can order the panels, etc. from us or purchase them locally, note the panels should be minimum 30v PV panels (30-39v), please review the specifications. The ACDC12b uses R410a, an ozone-friendly refrigerant, so it is legal for the customer to self-install however we recommend hiring a professional HVAC installer. If self-installing you will need a vacuum pump to commission the unit.

Anti-Corrosion For Long Life
Designed to last a long time even in coastal and/or island areas where salty mist, saline fog, or salt spray may come in contact with critical air conditioner components, the ACDC12B uses SeaSpray Anti-Corrosion Technology to protect the electronic and mechanical components from corrosion.

On pure AC power when no free solar energy is used, official AHRI SEER is >21. SEER is "Seasonal EER" and is a way of describing an "average EER" and considers that the system operates under part-load conditions a majority of the time. EER is equal to full-load cooling output in BTUs divided by energy input in watts. Officially, using solar does not change the SEER or the EER. However, if you consider energy input only on the basis of paid energy and don't consider the free solar energy as part of the input, using free energy from 3x 300w solar panels operating at full capacity would result in an EER of approximately 43. Because a system operates at part-load conditions a majority of the time, SEER ratings are typically much higher than EER ratings. If you tested and calculated a SEER value based only on the paid-energy, the numbers would be extremely high. Currently there is no official test standard for testing SEER or EER based on whether or not the energy is paid for.

Ordering, Pricing & Specifications

The Manufacturers List Price on the ACDC12b is $1695. Solar panels, etc., are not included. Qualified solar and HVAC professionals who purchase in quantity should contact us for dealer and distributor pricing. Private branding is available. These units are normally in stock.

Download Spec Sheet       See ETL Listing    See UL Energy Report     See AHRI Certificate

Installation Accessories Guide    See All-DC Off-Grid solar/telecom AC units     

Compare ACDC12 and DC4812VRF Side by Side   SeaSpray Anti-Corrosion Technology

See Solar Air Conditioning FAQ    Compare Solar Air Conditioners  

Shipping & logistics Information     Warranty    SEE Spec Sheet Previous Version ACDC12

See HotSpot Solar AC Energy Star Listing
  See Metal Roof Mounting Profile

Contact Us or call 1-800-916-2067                       2015 NEC Rapid Shutdown Compliance

NEW! The World's Most Efficient Portable Air Conditioner! This is the first-ever Dual Hose DC Inverter portable air conditioner. The Climax Air 12,000 BTU unit delivers twice the cooling for the same power, or the same cooling for half the power, compared to a standard portable AC.

HotSpot Energy Inc. is a certified manufacturer of specialty HVAC equipment.

Intertek ETL /UL 1995
CSA-C22.2 No. 236

International: 50hz are units
available. CE, TUV, SAA, & other certifications available.



Spec Sheet

HotSpot Energy
Thermal, Solar and HVAC Manufacturing Est. 2007


Effective SEER 35 for the ACDC12 air conditioning system are based on the U.S. Department of Energy (DOE) annual performance factor (APF) method for heat pumps and air conditioners (10CFR part 430). Estimates of annual solar energy production are calculated for a centrally located city in each DOE heating region, using National Renewable Energy Laboratory’s (NREL) PVWatts, Version 1. The annual solar energy production is an estimate and is based upon a fixed-tilt south-facing array free of shading, with a module tilt angle equal
to the local latitude of the installation. The annual solar energy production is included in the APF calculation as a reduction of the cooling season power consumption. In this example, the air conditioning unit is an ACDC12 (SEER 19) one ton unit located in Region IV (represented by Omaha, NE at 41° N. latitude) and with two solar modules rated 235 dc Watts each.


HotSpot Energy Inc. | 4021 Holland Blvd. | Chesapeake VA 23323 | 757-410-8640
Copyright 2010 HotSpot Energy Inc.