Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A wall-mount mini-split heating and air conditioning unit installed in a new house. A modern heat pump, this unit heats a house in winter and cools in the summer. This type of system eliminates ductwork which is a primary source of inefficiency in a conventional system making this about 30% more efficient. This particular unit has an eye sensor which pans the room looking for hot or cold spots and directs the airflow accordingly.
Large industrial air conditioner with high cooling capacity. Air conditioning fan concept
Lithium Bromide Absorption Heat Pump recovers waste heat to produce useful hot water even steam for heating and industrial process, not only helps to protect environment but also save energy obviously.
Ceiling air conditioner in the office building
Commercial HVAC units on the rooftop of a building. Air conditioner units connected with steel pipes.
Concept group of equipment for cooling and air conditioning and insulation 3d render on gray background with shadow
Ceiling Mounted Cassette Type Air Conditioner For Large Rooms.
Cassette split system on gray ceiling. Indoor unit of air conditioner.
two-fan external air conditioner unit on the background of metal walls
Central air conditioning equipment on the roof of the building
Biofuel boiler flue gas ventilator
Close up air conditioning central system installed on the ceiling
Steel fan on steel structure for ventilation system and air conditioner system of factory building.
air circulator
Ventilation and air conditioning system in a dental clinic. Antimicrobial air filtration in a medical room.
Japan, Air Conditioner, Ceiling, Color Image, Dirty
The man takes out filters from the air conditioner for cleaning. Split system maintenance.
Water pumps in a large power plant
Stainless steel duct work being installed in the HVAC system of a modern hospital.
Three Phase Electric Transformer Power Device With Oil Cooling
Stacked meat and burger packs are at -30 degrees celcius in a meat processing factory. Big Industrial refrigerator or dryer for any kind of food, meat, fruit or vegetable. From -10 to -80 degrees celcius.
Industrial air conditioner box with fans. Compressor-condensing unit. Factory with air-conditioned and cooled.
Computer laboratory in technical high school, no people.
Fan aircondition close-up
Cooling panel or heat sink machine in industrial plant
Close up view of coffee machine inside view. Coffee concept background.
Lithium Bromide Absorption Heat Pump recovers waste heat to produce useful hot water even steam for heating and industrial process, not only helps to protect environment but also save energy obviously. Mostly applied in steel, nonferrous metal, coal, power plant and petrifaction industries.
Hot air heater installed in public toilet
Refrigeration equipment on top of concrete wall
Free Images: "bestof:Interior of General Gas Light Company, unit heater division. Original caption reads, "Test fans on the assembly line." Several unidentified"
Stockton,_California._These_boys_of_Japanese_ancestry_are_among_the_several_at_this_Assembly_center_._._._-_NARA_-_537736.jpg
Stockton,_California._Evacuees_of_Japanese_ancestry_have_been_at_this_Assembly_Center_for_several_d_._._._-_NARA_-_537728.jpg
Stockton,_California._Evacuees_of_Japanese_ancestry_have_been_at_this_Assembly_center_for_several_d_._._._-_NARA_-_537730.jpg
San_Bruno,_California._View_of_the_Tanforan_Assembly_center,_showing_a_type_of_barrack_peculiar_to_._._._-_NARA_-_537943.jpg
Sacramento,_California._From_the_roof_of_the_power_plant,_Pacific_Gas_and_Electric_Company,_approxim_._._._-_NARA_-_521750.jpg
Sacramento,_California._College_students_of_Japanese_ancestry_who_have_been_evacuated_from_Sacramen_._._._-_NARA_-_537785.jpg
Centerville,_California._Farm_families_of_Japanese_ancestry_awaiting_evacuation_buses_which_will_ta_._._._-_NARA_-_537568.jpg
Sacramento,_California._Former_University_of_California_students_of_Japanese_ancestry_were_evacuate_._._._-_NARA_-_537783.jpg
Turlock,_California._These_young_evacuees_of_Japanese_ancestry_are_awaiting_their_turn_for_baggage_._._._-_NARA_-_537656.jpg
Stockton,_California._These_evacuees_of_Japanese_ancestry_are_bringing_fresh_food_with_them_to_this_._._._-_NARA_-_537732.jpg
Photograph_of_the_Wedding_of_George_and_Michiko_Uchida_-_NARA_-_537680.jpg
Stockton,_California._These_evacuees_of_Japanese_ancestry_are_watching_the_arrival_of_buses_bringin_._._._-_NARA_-_537731.jpg
San_Francisco,_California._Girls_of_Japanese_ancestry_have_just_sighted_a_Greyhound_bus_which_will_._._._-_NARA_-_537689.jpg
San_Bruno,_California._An_evacuee_nurse_of_Japanese_ancestry_tidying_up_after_a_busy_morning_in_the_._._._-_NARA_-_537935.jpg
San_Leandro,_California._Family_labor_transplanting_young_tomato_plants_under_canvas_about_ten_days_._._._-_NARA_-_536436.jpg
Centerville,_California._The_bus_has_just_arrived_and_these_farm_families_of_Japanese_ancestry_are_._._._-_NARA_-_537582.jpg
Centerville,_California._the_bus_has_just_arrived_and_these_farm_families_of_Japanese_ancestry_are_._._._-_NARA_-_537586.jpg
Centerville,_California._The_bus_has_just_arrived_and_these_farm_families_of_Japanese_ancestry_are_._._._-_NARA_-_537587.jpg
Centerville,_California._The_bus_has_just_arrived_and_these_farm_families_of_Japanese_ancestry_are_._._._-_NARA_-_537583.jpg
Byron,_California._Third_generation_of_American_children_of_Japanese_ancestry_in_crowd_awaiting_the_._._._-_NARA_-_537467.jpg
San_Bruno,_Calfiornia._San_Francisco_family_end_first_stage_of_evacuation_and_are_seen_leaving_the_._._._-_NARA_-_537489.jpg
Centerville,_California._A_caucasian_friend_has_come_to_say_goodbye_to_his_farmer_friends_of_Japane_._._._-_NARA_-_537555.jpg
Hayward,_California._Farmer_of_Japanese_ancestry_is_showing_his_identification_card_to_a_Wartime_Ci_._._._-_NARA_-_537525.jpg
Centerville,_California._This_youngster_is_being_evacuated_with_a_group_of_595_persons_of_Japanese_._._._-_NARA_-_537558.jpg
Centerville,_California._This_farm_mother_of_Japanese_ancestry_is_awaiting_the_evacuation_buses_whi_._._._-_NARA_-_537562.jpg
Centerville,_California._Evacuees_of_Japanese_ancestry_waiting_in_front_of_the_Japanese_American_Ci_._._._-_NARA_-_537564.jpg
Turlock,_California._Heads_of_families_of_Japanese_ancestry_are_gathered_about_the_table_where_thei_._._._-_NARA_-_537641.jpg
Turlock,_California._These_evacuees_of_Japanese_ancestry_are_awaiting_their_turn_for_medical_examin_._._._-_NARA_-_537643.jpg
Turlock,_California._This_aged_woman_of_Japanese_ancestry_,_in_foreground,_has_just_arrived_at_this_._._._-_NARA_-_537652.jpg
Near_Stockton,_California._Laborers_of_Japanese_descent_cutting_potato_seed_on_a_large_-scale_ranch_._._._-_NARA_-_537663.jpg
Oakland,_California._View_from_window_of_the_Wartime_Civil_Control_Administration_station._Moving_._._._-_NARA_-_537700.jpg
Stockton,_California._Roy_Kaneda_in_the_assembly_center_which_is_situated_on_the_outskirts_of_his_h_._._._-_NARA_-_537721.jpg
San_Francisco,_California._Father_of_Dave_Tatsuno_who_has_been_a_merchant_in_San_Francisco_for_fort_._._._-_NARA_-_537770.jpg
Woodland,_Yolo_County,_California._Persons_of_Japanese_ancestry,_bound_for_Merced_Assembly_center,_._._._-_NARA_-_537817.jpg
Stockton,_California._Hand_baggage_is_being_inspected_for_contraband_upon_the_arrival_of_evacuees_o_._._._-_NARA_-_537726.jpg
Stockton,_California._These_evacuees_of_Japanese_ancestry_are_watching_the_arrival_of_buses_bringin_._._._-_NARA_-_537727.jpg
San_Francisco,_California._Boys_of_Japanese_ancestry_unloading_bed-rolls_and_baggage,_which_they_ha_._._._-_NARA_-_537748.jpg
San_Francisco,_California._Evacuees_of_Japanese_ancestry_arriving_at_the_Wartime_Civil_Control_Admi_._._._-_NARA_-_537752.jpg
San_Francisco,_California._San_Francisco_residents_of_Japanese_ancestry_being_checked_by_registrati_._._._-_NARA_-_537753.jpg
San_Francisco,_California._This_evacuee_of_Japanese_ancestry_has_been_checked_by_officials_and_is_a_._._._-_NARA_-_537755.jpg
San_Francisco,_California._Bed_roll_and_baggage_of_evacuees_of_Japanese_ancestry_awaiting_shipment_._._._-_NARA_-_537757.jpg
Woodland,_California._Tenant_farmer_of_Japanese_ancestry_who_has_just_completed_settlement_of_their_._._._-_NARA_-_537759.jpg
Oakland,_California._Young_evacuee_of_Japanese_ancestry_guarding_the_family_belongings_near_the_War_._._._-_NARA_-_537889.jpg
Oakland,_California._Evacuee_family_of_Japanese_ancestry_leaving_Wartime_Civil_Control_Administrati_._._._-_NARA_-_537893.jpg
San_Bruno,_California._Mrs._Fujita_working_in_her_tiny_vegetable_garden_she_has_planted_in_front_of_._._._-_NARA_-_537952.jpg
Manzanar_Relocation_Center,_Manzanar,_California._Part_of_a_line_waiting_for_lunch_outside_the_mess_._._._-_NARA_-_537967.jpg
Manzanar_Relocation_Center,_Manzanar,_California._Part_of_a_line_waiting_for_lunch_outside_the_mess_._._._-_NARA_-_537968.jpg
Near_Mission_San_Jose,_California._Picking_strawberries_a_few_days_before_evacuation_of_residents_o_._._._-_NARA_-_536444.jpg
San_Fransico,_California._Street_scene_in_Japanese_quarter_on_day_preceding_evacuation_to_assembly_._._._-_NARA_-_537682.jpg
Oakland,_California._These_buses_are_lined_up_ready_to_take_residents_of_Japanese_ancestry_to_Tanfo_._._._-_NARA_-_537702.jpg
San_Bruno,_California._In_the_art_school_at_this_assembly_center._These_evacuee_children_are_remai_._._._-_NARA_-_537947.jpg
San_Francisco,_California._Oldest_member_of_the_Japanese_Methodist_church,_who_came_from_Japan_50_y_._._._-_NARA_-_537692.jpg
San_Francisco,_California._Young_evacuees_of_Japanese_ancestry_awaiting_evacuation_bus_which_will_t_._._._-_NARA_-_537756.jpg
Byron,_California._The_bus_which_will_take_this_farm_family_of_Japanese_ancestry_to_the_Assembly_ce_._._._-_NARA_-_537459.jpg
Byron,_California._The_moment_has_come_for_these_farm_families_of_Japanese_ancestry_to_board_the_bu_._._._-_NARA_-_537463.jpg
Byron,_California._The_moment_has_come_for_these_farm_families_of_Japanese_ancestry_to_board_the_bu_._._._-_NARA_-_537464.jpg
Byron,_California._The_moment_has_come_for_these_farm_families_of_Japanese_descent_to_board_the_bus_._._._-_NARA_-_537465.jpg
Byron,_California._The_moment_has_come_for_these_farm_families_of_Japanese_ancestry_to_board_the_bu_._._._-_NARA_-_537466.jpg
San_Bruno,_California._Arriving_at_the_Assembly_center,_the_man_at_the_right_is_a_volunteer_Japanes_._._._-_NARA_-_537483.jpg
San_Bruno,_California._Evacuees_of_Japaneses_ancestry_arriving_at_the_Tanforan_Assembly_center._Th_._._._-_NARA_-_537492.jpg
Centerville,_California._Irrigator,_who,_with_595_persons_of_Japanese_ancestry,_is_leaving_this_rur_._._._-_NARA_-_537553.jpg
Near_Stockton,_California._Tractor_operator_of_Japanese_ancestry,_on_large-scale_corporation_farm_i_._._._-_NARA_-_537595.jpg
Turlock,_California._Families_of_Japanese_ancestry_arrived_at_Turlock_Assembly_center._Evacuees_wi_._._._-_NARA_-_537634.jpg
Turlock,_California._Families_of_Japanese_ancestry_arrived_at_Turlock_Assembly._Evacuees_will_be_h_._._._-_NARA_-_537637.jpg
Turlock,_California._Families_of_Japanese_ancestry_arrive_at_Turlock_Assembly_Center._Evacuees_wil_._._._-_NARA_-_537644.jpg
Turlock,_California._Families_of_Japanese_ancestry_arrived_at_Turlock_assembly_center._Evacuees_wi_._._._-_NARA_-_537653.jpg
San_Francisco,_California._This_family_is_preparing_to_move_from_their_Bush_Street_home_to_an_Assem_._._._-_NARA_-_537687.jpg
Byron,_California._These_field_laborers_of_Japanese_ancestry_at_Wartime_Civil_Control_Administratio_._._._-_NARA_-_537698.jpg
Oakland,_California._Residents_of_Japanese_ancestry_waiting_for_evacuation_buses_which_will_take_th_._._._-_NARA_-_537707.jpg
Woodland,_California._Filled_with_evacuees_of_Japanese_ancestry,_the_special_train_is_ready_to_depa_._._._-_NARA_-_537827.jpg
San_Francisco,_California._Friends_and_neighbors_congregate_to_bid_farewell,_though_not_for_long,_t_._._._-_NARA_-_537745.jpg
San_Francisco,_California._This_bus_loaded_with_evacuees_of_Japanese_ancestry,_is_bound_for_Tanfora_._._._-_NARA_-_537749.jpg
Sacramento,_California._Young_University_of_California_students_now_at_this_Assembly_Center_awaitin_._._._-_NARA_-_537789.jpg
Woodland,_California._Families_of_Japanese_ancestry_with_their_baggage_at_railroad_station_awaiting_._._._-_NARA_-_537803.jpg
Woodland,_California._Families_of_Japanese_ancestry_with_their_baggage_at_railroad_station_awaiting_._._._-_NARA_-_537804.jpg
Woodland,_California._Families_of_Japanese_ancestry_with_their_baggage_at_the_railroad_station_wait_._._._-_NARA_-_537805.jpg
Woodland,_California._Families_of_Japanese_ancestry_with_their_baggage_at_railroad_station_awaiting_._._._-_NARA_-_537806.jpg
Woodland,_California._Evacuees_of_Japanese_ancestry_waiting_at_the_railroad_station_for_the_special_._._._-_NARA_-_537807.jpg
Woodland,_California._Evacuees_of_Japanese_ancestry_from_this_rich_agricultural_district_are_on_the_._._._-_NARA_-_537820.jpg
Woodland,_California._Evacuees_of_Japanese_ancestry_from_this_rich_agricultural_district_are_on_the_._._._-_NARA_-_537822.jpg
Woodland,_California._The_special_train_is_now_leaving_the_platform_bearing_the_last_of_the_750_per_._._._-_NARA_-_537825.jpg
Sacramento,_California._Typical_homes_of_residents_of_Japanese_ancestry._Evacuation_to_assembly_ce_._._._-_NARA_-_537879.jpg
San_Bruno,_California._Entering_Recreational_Hall_where_election_is_being_held_for_Councilman._A_g_._._._-_NARA_-_537899.jpg
San_Bruno,_California._A_close-up_of_the_exterior_of_a_family_unit._These_barracks_were_formerly_h_._._._-_NARA_-_537903.jpg
San_Bruno,_California._Members_of_the_Fujita_family_inspecting_their_tiny_vegetable_garden_in_front_._._._-_NARA_-_537910.jpg
San_Bruno,_California._Entering_Recreational_Hall_where_election_is_being_held_for_Councilmen._A_g_._._._-_NARA_-_537927.jpg
San_Bruno,_California._Portrait_of_a_youth_of_Japanese_ancestry_from_a_farming_district_in_central_._._._-_NARA_-_537940.jpg
San_Bruno,_California._Portrait_of_evacuee_of_Japanese_ancestry_from_a_farming_district_in_central_._._._-_NARA_-_537951.jpg
Near_Mission_San_Jose,_California._Picking_strawberries_a_few_days_before_evacuation_of_residents_o_._._._-_NARA_-_536445.jpg
Photograph_of_Baggage_Belonging_to_Evacuees_of_Japanese_Ancestry_Ready_to_Be_Loaded_into_Moving_Vans_-_NARA_-_537703.jpg
Mountain_View,_California._Scene_in_orchard_of_a_20-acre_farm_in_Santa_Clara_County_before_the_oper_._._._-_NARA_-_536398.jpg
Oakland,_California._Evacuees_at_the_Wartime_Civil_Control_Administration_Control_station_awaiting_._._._-_NARA_-_537708.jpg
Byron,_California._Farm_families_of_Japanese_ancestry_boarding_buses_for_Turlock_Assembly_Center_65_._._._-_NARA_-_537457.jpg
Mountain_View,_California._Scene_in_orchard_of_20-acre_farm_in_Santa_Clara_County,_California,_befo_._._._-_NARA_-_536399.jpg
Oakland,_California._This_family_of_Japanese_ancestry,_is_waiting_at_the_Wartime_Civil_Control_Admi_._._._-_NARA_-_537704.jpg
Centerville,_California._Yugoslavian_farmer_is_taking_over_berry_farm_formerly_operated_by_resident_._._._-_NARA_-_536420.jpg
Near_Mission_San_Jose,_California._Laborer_of_Japanese_ancestry_who_within_a_few_days_will_be_on_hi_._._._-_NARA_-_536440.jpg
Byron,_California._Youngsters_in_this_family_of_Japanese_ancestry,_from_a_farm_in_Contra_Costa_Coun_._._._-_NARA_-_537468.jpg
Oakland,_California._Boarding_a_bus_at_the_Wartime_Civil_Control_Administration_station_for_Tanfora_._._._-_NARA_-_537705.jpg
Byron,_California._Farm_families_of_Japanese_ancestry_boarding_buses_for_Turlock_Assembly_center_65_._._._-_NARA_-_537458.jpg
Terms of Use   Search of the Day