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Description
Carrier Comfort™ 3.5 Ton R454B, Package RTU Gas Heat/Elec Cool, Single Stage, 60k 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
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
My cats love their self heating mat!
Size: 27.6"L x 18.8"W x 0.5"Th, Color: Coffee
I use this as a cover on my loveseat. It took my cats a few days to realize how much they liked their new mat. It makes a little crinkle sound when they walk on it but they don't seem to be bothered by it at all.
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Reviewed in the United States on May 1, 2026
★★★★★ 3
Thinner Than Expected but Still Gets Used ULIGOTA Self-Warming Cat Mat
Size: 20.0"L x 16.0"W x 0.5"Th, Color: Grey, Size: 20.0"L x 16.0"W x 0.5"Th, Color: Grey
This self-warming mat is much thinner than expected, and the corners don’t lay completely flat—they tend to curl upward, which makes it look a little cheap when first placed down. The material is soft, though, and despite its lightweight feel, it does warm up slightly when the cat lays on it. It’s not plush or padded like some other warming mats, but it still provides a cozy surface.
Pros:
• Soft surface
• Lightweight and easy to move
• Cat actually uses it
• Self-warming layer works to a small degree
Cons:
• Much thinner than expected
• Corners curl up and won’t stay flat
• Doesn’t feel premium
Verdict:
Even though it’s flimsier than anticipated, my cat sleeps on it consistently—so it’s staying. For pets that don’t need much cushion, it’s a decent budget option, but buyers should expect a very thin mat rather than a plush warming pad.
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Reviewed in the United States on November 15, 2025
★★★★★ 5
Works just as intended
Size: 20.0"L x 16.0"W x 0.5"Th, Color: Coffee, Size: 20.0"L x 16.0"W x 0.5"Th, Color: Coffee
My recently adopted rescue kitty loves this self-warming mat. We live in the south, and sometimes the temps drop a bit. I placed her mat out onto some blankets and she was immediately receptive to it. I sat and gave her plenty of cuddles while she laid down on the pad, and I could feel the toasty warmth beneath her body on the fabric.
The size of the mat you see in my photos is the 16”x20” size. My kitten is 6 months old and she is a gangly, lanky girl. She fits on the mat when curled up- but she likes to sprawl as well. This size is great for inside her travel carrier, but I will more than likely also order a larger size for home use so that I can keep the smaller one in her travel carrier. I ordered the brown and I like the rich, chocolatey color. The top is a very fine micro velvet that is very soft. The underside is polyester that has some small rubber dots for traction. It is thin and very pliable. The mat is great quality and has held up with my kitty attacking it during playtime as well.
Whether for home or for travel uses- it’s a big hit with my kitty! Works just as described and makes a wonderful addition for these colder months.
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Reviewed in the United States on November 12, 2023
★★★★★ 1
terrible waste
Size: 20.0"L x 16.0"W x 0.5"Th, Color: Grey
this is a very thin pad and i do not think it is self warming. even sprayed with catnip he really has no interest in it
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Great Value Toy
Color: Crinkle Duck (Blue), Size: Large, Color: Crinkle Duck (Blue), Size: Large
This toy has been one of my dog’s absolute favorites. He gets excited every time he sees it and will carry it around the house, toss it in the air, and keep himself entertained for a long time. The shape and texture seem perfect for him, and it quickly became one of his go-to toys over everything else in his basket.
What I really like is that it holds up reasonably well for the price. It’s definitely not indestructible, and after a lot of play, it will sometimes start to rip—usually around the feet first since that’s where my dog tends to grab and chew the most. But honestly, considering how affordable it is, I don’t mind replacing it when needed. It’s inexpensive enough that rebuying feels worth it because he genuinely loves it that much.
I’d rather keep buying a toy he is obsessed with than spend more on something that just sits untouched. It’s fun, cute, and keeps him happy, which is what matters most. Overall, I’d definitely recommend it for dogs who love plush toys and playful chewing.
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Reviewed in the United States on April 28, 2026