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Description
Carrier Comfort™ 3.5 Ton R454B, Package RTU Gas Heat/Elec Cool, Single Stage, 90k BTU, Low NOx, 460/3Single Packaged Products with Energy Saving Features and R 454B Puron Advance refrigerant. 13. 4 SEER2 11. 05 EER2 81. 0% AFUE ECM Motor Standard Direct Spark Ignition Low Sound Levels Dehumidification Feature Dense Wire Condenser Coil Guard Standard Cabinet air leakage of 2. 0% or less at . 5 in. W. C. when tested in accordance with ASHRAE standard 193. Refrigerant leak detection dissipation system for added safety Maximum allowed elevation is 10,000
Single-Packaged Products with Energy-Saving Features and R-454B Puron Advance™ refrigerant.
• 13.4 SEER2
• 11.05 EER2
• 81.0% AFUE
• ECM Motor-Standard
• Direct Spark Ignition
• Low Sound Levels
• Dehumidification Feature
• Dense Wire Condenser Coil Guard-Standard
• Cabinet air leakage of 2.0% or less at .5 in. W.C. when tested in accordance with ASHRAE standard 193.
• Refrigerant leak detection dissipation system for added safety
• Maximum allowed elevation is 10,000 ft (3,048m) above sea level
Features/Benefits
Features/Benefits
One-piece heating and cooling units with low sound levels, easy installation, low maintenance, and dependable performance.
Puron Advance is Carrier's latest choice of Refrigerant to help meet the 2025 GWP requirement. This unit is designed and tested with Puron Advance and contains a dissipation system.
Easy Installation
Factory-assembled package is a compact, fully self-contained, combination gas heating/electric cooling unit that is prewired, pre-piped, and pre-charged for minimum installation expense. These units are available in a variety of standard and optional heating/ cooling size combinations with voltage options to meet residential and light commercial requirements. Units are lightweight and install easily on a rooftop or at ground level. The high tech composite base eliminates rust problems associated with ground level applications.
Innovative Unit Base Design
On the inside a high-tech composite material will not rust and incorporates a sloped drain pan which improves drainage and helps inhibit mold, algae and bacterial growth. On the outside metal base rails provide added stability as well as easier handling and rigging.
Convertible duct configuration
Convertible duct configuration
Unit is designed for use in either downflow or horizontal applications. Each unit is converted from horizontal to downflow and includes two horizontal duct covers. Downflow operation is provided in the field to allow vertical ductwork connections. The basepan seals on the bottom openings to ensure a positive seal in the vertical airflow mode.
Efficient operation High-efficiency design offers SEER2 (Seasonal Energy Efficiency Ratios) of 13.4, 11.05 EER2, and AFUE (Annual Fuel Utilization Efficiency) ratings of 81.0%.
Energy-saving, direct spark ignition saves gas by operating only when the room thermostat calls for heating. Standard units are furnished with natural gas controls. A low-cost field installed kit for propane conversion is available for all units.
Low NOx units meet 40 ng/J NOx emissions. Can be installed in air quality management districts with a 40 ng/J NOx emissions requirement.
Durable, dependable components
Durable, dependable components
Monoport inshot burners produce precise air-to-gas mixture, which provides for clean and efficient combustion. The large monoport on the inshot (or injection type) burners seldom, if ever, requires cleaning. All gas furnace components are accessible in one compartment.
Turbo-tubular™ heat exchangers are constructed of stainless steel for corrosion resistance and optimum heat transfer for improved efficiency. The tubular design permits hot gases to make multiple passes across the path of the supply air.
In addition, dimples located on the heat exchanger walls force the hot gases to stay in close contact with the walls, improving heat transfer.
ECM Motor is standard on all models.
In addition, dimples located on the heat exchanger walls force the hot gases to stay in close contact with the walls, improving heat transfer.
ECM Motor is standard on all models.
Direct-drive PSC (Permanent Split Capacitor) condenser-fan motors are designed to help reduce energy consumption and provide for cooing operation down to 40°F (4.4°C) outdoor temperature. Motormaster® II low ambient kit is available as a field-installed accessory.
Thermostat controls
Time Guard® II anti-short cycle protection circuitry. If a non-corporate thermostat without anti-short cycle protection is used the Time Guard II field-installed anti-short cycle kit is recommended.
Refrigerant system is designed to provide dependability. Liquid filter driers are used to promote clean, unrestricted operation. Each unit leaves the factory with non-ozone depleting and low global warming potential Puron Advance (R-454B) refrigerant charge. Refrigerant service connections make checking operating pressures easier. Factory-installed leak detection dissipation system for added safety.
High Pressure Switch provides added reliability for the compressor.
Indoor and Outdoor coils are computer-designed for optimum heat transfer and efficiency. The indoor coil is fabricated from aluminum tube and aluminum fins and is located inside the unit for protection against damage. The outdoor coil is internally mounted on the top tier of the unit.
Low sound ratings ensure a quiet indoor and outdoor environment with sound ratings as low as 69.0 dBA.
Easy to service cabinets provide easy 3-panel accessibility to serviceable components during maintenance and installation. The basepan with integrated drain pan provides easy ground level installation with mounting pad. A nesting feature ensures a positive basepan to roof curb seal when the unit is roof mounted. A convenient 3/4-in. (19.05 mm) wide perimeter flange makes frame mounting on a rooftop easy.
Standard horizontal metal duct covers with insulation come with the unit \and cover the horizontal duct openings. These can be left in place if the units are converted to downflow.
Standard horizontal metal duct covers with insulation come with the unit \and cover the horizontal duct openings. These can be left in place if the units are converted to downflow.
Integrated Gas Control (IGC) board provides safe and efficient control of heating and simplifies trouble-shooting through its built-in diagnostic function.
Cabinets are constructed of heavyduty, phosphated, zinc-coated prepainted steel capable of withstanding 500 hours in salt spray. Interior surfaces of the evaporator/heat exchanger compartment are insulated with cleanable semi-rigid insulation board, which keeps the conditioned air from being affected by the outdoor ambient temperature and provides improved indoor air quality. (Conforms to American Society of Heating, Refrigeration and Air Conditioning Engineers 62.2.) The sloped drain pan minimizes standing water in the drain. An external drain is provided.
Limited Warranty*
• Default 5-year parts limited warranty
- 10-year parts limited warranty with timely registration. Equipment must be registered within 90 days of original installation, except in jurisdictions where warranty benefits cannot be conditioned on registration.
* Applies to original purchaser/homeowner and 5 years to subsequent owners.
• Default 5-year on compressor limited warranty
-10-year on compressor limited warranty with timely registration. Equipment must be registered within 90 days of original installation, except in jurisdictions where warranty benefits cannot be conditioned on registration.
* Applies to original purchaser/homeowner and 5 years to subsequent owners.
• Default 20-year stainless steel heat exchanger limited warranty
- Life stainless steel limited warranty with timely registration. Equipment must be registered within 90 days of original installation, except in jurisdictions where warranty benefits cannot be conditioned on registration.
* Applies to original purchaser/homeowner and 5 years to subsequent owners. See warranty certificate for complete details and restrictions.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1122 reviews
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Product Reviews
★★★★★ 5
The REAL American History
Bearing 511 pages of text supported by nearly 70 pages of footnotes, Ibram X. Kendi’s Stamped From the Beginning (Bold Type Books, 2017) is, for me, not an “alternative” American history but THE American history.
Kendi, founding director of the Boston University Center for Antiracism Research, makes a convincing argument—which he emphasizes in his other books and public speaking—that, contrary to conventional assumptions, racist policies drive racist thinking and not the other way around. And, Kendi adds, it’s economic, political, or cultural self interests that give birth to such policies and motivate their rejection when new circumstances demand it.
In making his case, Kendi patiently and passionately traces the development, implementation, and adaptations of three racial dynamics across the history of the U.S.:
1. Segregation: Blaming Black people themselves for racial disparities, and therefore denying them the privileges 2. enjoyed by white Americans
3. Assimilation: Blaming Black people and racial discrimination for racial disparities, and demanding Black people change their behavior in order to experience less racism
Antiracism: Pointing to racial discrimination and policies while defending Black people’s right to be themselves
In addition, Kendi structures this narrative across five lengthy sections, each centered on the impact of a specific, influential “tour guide” and their contemporaries:
1. Cotton Mather, early America’s greatest preacher and intellectual, and a staunch promoter of racist policies and ideas
2. Thomas Jefferson, primary author of the Declaration of Independence, and America’s first Secretary of State, second Vice President, and third President, who held contradictory views amid incongruous political and personal actions
3. William Lloyd Garrison, an influential publisher who opposed slavery but embraced assimilationist ideas
4. W. E. B. DuBois, a towering Black intellectual who gradually shifted from assimilation to antiracism
5. Angela Davis, one of the best known Black scholars and antiracist activists still alive today
When you’re done reading Stamped From the Beginning, you’ve gained a new framework for noticing and examining race and its interrelated justice issues. Current racial events take on a richer meaning, with their nuances and complexities more tangible than before. Other books on racial justice help to reinforce this framework and further develop a reader’s embryonic skills for noticing racism within themselves, others, policies, and systems—and doing something about it.
To grow increasingly fluent in Black history is to awaken from the slumber of an incomplete, biased, and often false American narrative that’s been drilled into most of our minds since we were young children. Since racism remains very much alive today, waking up is crucial and, from my experience, invigorating and teeming with possibilities for a more purposeful life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2020
★★★★★ 5
This should be required reading for everyone..
Stamped From the Beginning discusses the history of racism and racist ideas in America. Kendi focuses on five main people who have made the biggest impact on racism and anti-racism in our history: Puritan minister Cotton Mather, Thomas Jefferson, abolitionist William Lloyd Garrison, W.E.B. Du Bois, and legendary activist Angela Davis.
“When men oppress their fellow-men, the oppressor ever finds, in the character of the oppressed, a full justification for his oppression.” Douglass, amazingly, summed up the history of racist ideas in a single sentence.” - (Fredrick Douglass)
This was an incredibly powerful and educational book. I knew going into this book that the United States education system has failed at teaching the history of slavery, emancipation, Jim Crow, and the continued struggle. But it still amazed me at how much it doesn’t teach. With every single chapter I learned new things that should have been taught to me in school.
While this is a very large book filled with history, it was an easy read. Normally I would have read this book in a few days but instead I stretched it out over a month and a half. I read, reflected, took notes, did more research and I still know that I have a lot to learn. My book is now covered in sticky notes and I know I will be rereading this in the future because I know I missed stuff.
“That is what it truly means to think as an antiracist: to think there is nothing wrong with Black people, to think that racial groups are equal. There are lazy and unwise and harmful individuals of African ancestry. There are lazy and unwise and harmful individuals of European ancestry. There are industrious and wise and harmless individuals of European ancestry. There are industrious and wise and harmless individuals of African ancestry. But no racial group has ever had a monopoly on any type of human trait or gene—not now, not ever.”
This book changed the way I viewed the history of the United States. So much of this history has been glossed over by the education system, and other history books. This book should be required reading for everyone especially since the education system won’t teach us the true history of the United States. All I can say is, READ THIS BOOK!
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Reviewed in the United States on October 1, 2020
★★★★★ 5
Good Textbook
Format: Paperback
Good book. Slight tear to the cover but I just taped it. Worth it for the money I saved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
★★★★★ 5
Delivered on time and in great condition
Format: Paperback
They delivered very quickly and book was in great condition. Thanks you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2024
★★★★★ 5
Great book
Format: Paperback
I have to say this book really helped me through my course . I wish that they would have a book & workbook all in 1 . Great purchase ! Yes, it’s a little pricey but it was worth it in the end .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2023
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