Heat Pumps

Our Featured Heat Pump – The Carrier Infinity I8VS

Think about the advanced technologies available today: televisions that automatically lower sound to a consistent level, clothes dryers that run according to detected moisture levels, and car engines that can activate and de-activate cylinders to save on fuel. It’s the variability that makes them more efficient, more useful and more valuable. That’s the idea behind Carrier® Variable-Speed Technology: applying key technologies to provide exceptional comfort while using less energy.

Family enjoying home comfort of Carrier 18VS Heat Pump

Carrier® Variable-Speed Technology embodies a new level of product performance. The Infinity 18VS, using a sophisticated internal control, paired with the Infinity Touch Control, and an Infinity gas furnace or fan coil, senses indoor and outdoor conditions and adjusts comfort levels accordingly. It produces efficiency ratings up to 18 SEER and up to 11 HSPF, but at a price point closer to two-stage heat pumps.

At the heart of Variable-Speed Technology is the compressor and inverter. While the Infinity® 20 heat pump uses adaptable-speed technology to adjust compressor speed between 40 and 100%, the 18VS can vary its compressor speed by continuously monitoring conditions and selecting one of five operating stages for optimal comfort and efficiency — far beyond the range of typical two-stage heat pumps.

The Infinity® 18VS delivers strong heating performance at typical heat pump operating temperatures. With up to an outstanding 11 HSPF rating and HYBRID HEAT® capability, it can still heat efficiently before switching on an auxiliary heat source when the thermometer dips. This makes it an attractive option in a wide range of geographic regions.

  • Vari-efficient: Inverter-driven rotary compressor is capable of operating at five different stages for efficiency ratings:
    • Up to 11 HSPF
    • Up to 18 SEER
  • Vari-Small: Up to 58% smaller in overall size and significantly lighter than the Infinity 16 two-stage heat pumps of similar capacity.
  • Vari-Comfortable: Longer run times at lower speeds increase dehumidification capability and provide for more even cooling and better overall indoor comfort—it just feels cooler even at higher temperatures.
  • Vari-Quiet: Variable-Speed Technology enables the Infinity 18VS heat pump to operate at lower capacity the majority of the time, resulting in sound levels as low as 55 dBA.

Call us now at 503­-620-5643 to find out about special tax credits and rebates (as much as $2800 in savings if you act by February 15th, 2016).

Infinity® 18VS Variable Speed Heat Pump Model: 25VNA8
Energy Efficiency

  • Up to 18 SEER / Up to 12.5 EER / Up to 11 HSPF
  • Microtube Technology™ refrigeration system


  • Sound level as low as 55 dBA in low speed (Silencer System II)
  • Soft start and smooth ramp to operating speeds


  • Variable speed compressor operates at 5 stages with capacity range from as wide as 25 – 100%
  • Air cooled Inverter variable speed drive
    • System requires Infinity Touch Control with version 11 software or newer
    • Ratings provided with 2-stage thermostats and suitable non-communicating indoor products for 2-stage operation.


  • Puron® refrigerant – environmentally sound, won’t deplete the ozone layer and low lifetime service cost
  • Front-seating service valves
  • Inverter control drives compressor and fan motor
  • No control module attached to fan motor
  • Infinity intelligence monitors critical system parameters
  • Pressure equalizer valve for easy compressor starting
  • High pressure switch
  • Suction pressure transducer
  • Electronic expansion valve (EXV) for heating, TXV for cooling
  • Compressor discharge temperature sensor
  • Suction temperature sensor
  • Filter drier (field installed)
  • Internal crankcase heater standard

Flexibility and Installation

  • 2 control wires to outdoor unit in complete Infinity system and Touch Control
  • Smaller and lighter than 2-stage units
  • Minimum and Maximum adjustments with Infinity Touch Control
  • Hybrid Heat™ dual fuel capable
  • Compatible with non-communicating thermostats


  • WeatherArmor Ultra™ protection package
  • Solid, durable sheet metal construction
  • Steel louver coil guard
  • Baked-on, complete outer coverage, powder paint


  • Line sets up to 100 ft (30.5 m) equivalent length
  • No long-line accessories required

EFFICIENCYInfinity 20Infinity 18Infinity 16Perform. 14
SEERUp to 20Up to 18Up to 17Up to 14
HSPFUp to 13Up to 11Up to 9.75Up to 8.2
EERUp to 16Up to 12.5Up to 13.3Up to 12.2
Hybrid Heat compatibleCheckCheckCheckCheck
ENERGY STAR® sizes availableCheckCheckCheckCheck
Tax Credit sizes availableCheckCheckCheck
COMFORTInfinity 20Infinity 18Infinity 16Perform. 14
Cold weather performanceOptimalBestCheckCheck
Summer dehumidificationOptimalOptimalEnhancedCheck
Sound level 1 (as low as)58 dB55 dB69 dB66 dB
External silencer mufflerCheck
Silencer System IICheckCheckCheck
Compressor sound blanketCheckCheckCheckCheck
INNOVATIONInfinity 20Infinity 18Infinity 16Perform. 14
Greenspeed intelligenceCheck
Compressor typevariable speedvariable speed2-stage scroll1-stage scroll
Infinity Control readyCheckCheckCheck
Diagnostic intelligenceCheckCheckCheck
Ideal Defrost (requiresInfinity Control)CheckCheckCheck


PEACE OF MINDInfinity 20Infinity 18Infinity 16Perform. 14
10-yr Parts Limited WarrantyCheckCheckCheckCheck
Optional Labor WarrantiesAvailableCheckCheckCheckCheck
Ozone-friendly Puron refrigerantCheckCheckCheckCheck
WeatherArmor™ protectionCheckCheckCheckCheck