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Hisense Hi-Ultra HD Series

by Hisense
SKU AOH-36U3T25U
Original price $10,999.00 - Original price $16,999.00
Original price
$12,499.00
$10,999.00 - $16,999.00
Current price $12,499.00
Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped
  • Pricing may change based on home inspection
  • Pricing Does Not Reflect Current Hisense Promotions or Rebates.
  • For Best Pricing Request a Quote or Call
Request a quote

Hi-ULTRA HD

    • Up to 18 SEER2/ Up to 9 HSPF2
    • Compact and slim discharge design
    • Uses R-454B low- GWP refrigerant
    • Built-in condenser base pan heater and crankcase heater
    • GoldFin® heat exchanger, salt spray tested to 1,500 hours for corrosion resistance
    • Compatible with Hisense AHUs, coil‑only + furnace systems, 3rd‑party coils & AHUs
    • Quiet operation as low as 56 dB(A)
    • Heating operation range: -4°F (-20°C ) to 75°F (24°C )
    • Cooling operating range: 5°F (-15°C ) to 115°F (46°C )
Features

Compact and Slim Side Discharge Design           

• Easy transport and installation

• Reduced space requirements in yard or porch

• Reduced space easily raised or mounted on wall for additional clearance from snow and flooding

R454b Low GWP Refrigerant

• Reduced Global Warming Potential and Superior
Heating Capacity

Flexible Universal Replacement Solution

• w/ Hisense AHU, Coil Only + Furnace, or 3rd Party Coils and AHUs.

• Use existing line sets and 24v controls/wiring

24V Thermostat Connection

• No adapter or proprietary controls required

• Connect to all 24V thermostats (ex: Nest,Ecobee, Honeywell) or Hisense Smart Thermostat

Up to 18 SEER2 /10 EER2/9 HSPF2 for Rebates & Cost Savings

Low Temperature Heating: -4°F
(-20°C) to 75°F (24°C)

• Maintains high heating capacity below 5°F

• Built-in condenser base pan heater and crank case heater

High Temperature Cooling: 5°F (-15°C) TO 115°F (68°C)

• Maintains high capacity at 110°F Quiet
Operation: As Low as 56dB on ODU

• Up to 0.8" WC Maximum ESP

Multiple Refrigerant Leak Alarms

• Indoor A2L leak sensor on AHU

• Outdoor shutoff and alarm for pressure drop

Hisense FAQ

1: What is the Hisense Hi-Ultra HD Series?

A: The Hisense Hi-Ultra HD Series is a premium inverter-driven heat pump system designed to deliver high-efficiency heating and cooling, advanced comfort control, and reliable year-round performance for residential applications.

2: What makes the Hi-Ultra HD Series different from traditional HVAC systems?

A: Unlike conventional single-stage systems that cycle on and off, the Hi-Ultra HD Series uses inverter technology to continuously adjust capacity based on the home's comfort needs. This helps improve efficiency, comfort, humidity control, and overall system performance.

3: Is the Hisense Hi-Ultra HD Series energy efficient?

A: Yes. The Hi-Ultra HD Series is engineered for high-efficiency operation, helping homeowners reduce energy consumption while maintaining consistent indoor comfort. Variable-speed technology allows the system to operate only at the capacity needed.

4: How quiet is the Hi-Ultra HD Series?

A: The Hi-Ultra HD Series is designed for ultra-quiet operation. The inverter compressor and variable-speed fan motors reduce operating noise by running at lower speeds whenever possible, creating a more comfortable indoor and outdoor environment.

5: Why should homeowners consider the Hisense Hi-Ultra HD Series?

A: Homeowners choose the Hi-Ultra HD Series because it offers:

  • Advanced inverter technology
  • High-efficiency heating and cooling
  • Consistent room temperatures
  • Improved humidity control
  • Quiet operation
  • Reliable year-round comfort
  • Modern smart control capabilities
  • Potential energy savings compared to traditional HVAC systems

The Hi-Ultra HD Series is an excellent option for homeowners seeking premium comfort, efficiency, and advanced HVAC technology in a single system.

Have More Question Contact us Here.

Warranty

Parts Limited Warranty* - 10 Year Parts (Does not include: condensate, fuse/breakers, electrical, refrigerant, existing duct system.)

​Labor Limited Warranty* - 2 Year Labor

Unit Replacement Warranty* - 2 Year Unit Replacement

Years 3-10 Extended Warranty* Available

*Requires registration-some restrictions apply

Why Choose A1CSI?

Q: Why should I trust A-1 Certified Service with my new HVAC installation instead of big-box stores or unlicensed installers? 

A: At A-1 Certified Service, we install HVAC systems the right way — with proper sizing, correctly matched quality equipment, and factory-trained, fully licensed technicians who follow manufacturer guidelines and Knoxville's climate needs. Unlike big-box stores and unlicensed crews, we perform detailed load calculations, airflow testing, and ensure your new HVAC system is registered for warranty parts coverage. As a local Knoxville-area company, you get clean, professional service, honest communication, and long-term support you can count on.  And, see our reviews on Google to learn what others say about their service with A-1 Certified Service. 

Q: What makes A-1 Certified Service different when it comes to properly sizing and installing high-efficiency HVAC systems for Tennessee homes? 

A: Proper sizing is critical in Tennessee’s humid summers and variable winters — and that’s where we stand apart. A-1 Certified Service performs accurate Manual J load calculations tailored to your home’s insulation, windows, and layout. We will never guess or push oversized units, and we will ensure your duct system will work with your home. Whether you need a heat pump, central air, or ductless mini-split, our factory-trained, certified installers deliver optimal efficiency, quiet operation, and lower energy bills. As a local Knoxville-area company, we understand customer's demands and back every installation with professional standards you can trust.  

Q: How does choosing A-1 Certified Service for HVAC installation give me better long-term comfort and lower energy bills? 

A: At A-1 Certified Service, we deliver complete, properly installed systems — including duct evaluation, sealing, and airflow balancing — for consistent temperatures, better indoor air quality, and maximum efficiency. Our high-efficiency equipment, combined with expert installation tailored to Knoxville's homes, helps you enjoy reliable comfort while significantly lowering energy bills. You also get strong warranty support and ongoing maintenance from a local company that stands behind its work.