Infinity® Residential Ductless Highwall Heat Pump System

Quality Products Installed Professionally

Texas Air Mechanical has more than four decades of experience as boiler and HVAC installers. We guarantee the work we do, so you can benefit not only from our warranty, but the full manufacturer’s warranty too. If you know you need a new system for your home or business, call us today to request an estimate.


Brands You Know & Trust

Quality really does make a difference in how a unit operates and lasts. That’s why we’ve carefully chosen the brands of boilers and HVAC systems we sell and install. Our manufacturer partners include:

  • Rheem
  • Carrier
  • Trane
  • Lennox
  • York
  • Pacific Steam Boilers
  • SUSSMan Boilers
  • Reimers Boilers
  • Goodman

These names offer exceptional quality and stand behind their products with industry-leading warranties.




Why Choose Texas Air Mechanical as Your Boiler & HVAC Installers

We know there are many companies in the DFW Metro area that are boiler and HVAC installers, but few have the expertise of Texas Air Mechanical. All our technicians are licensed and factory-certified. Before we provide you with a quote for a new unit, we’ll evaluate your home or facility to determine the right type and size system. We’ll then provide you several options based on your preference, needs and budget.

You’ll find that when you choose us as your HVAC installers, all work is done in accordance with not only the manufacturer’s instructions, but also local and state code. We want to ensure that your new system is properly installed so you benefit from the full factory warranty in addition to our installation guarantee.

Because we’re locally owned and operated, we truly care about our reputation. Texas Air Mechanical is A+ rated by the Better Business Bureau, and we also have countless five-star reviews from our residential and commercial customers.


Get in Touch Today

If you’d like to request a quote, call Texas Air Mechanical to schedule your appointment. We accept most major credit cards and offer several convenient financing options for residential services. Contact us today by calling (972) 284-0584 or filling out our contact form. Se habla español.


Infinity® Residential Ductless Highwall Heat Pump System


Model: 38/40GRQ

Commercial Hvac Companies Keller Tx Gas Ductless Logo 14

  • Category Price: $$
  • Product Line: Ductless – Infinity Residential Series Heat Pump
  • Cooling Efficiency: Up to 30.5 SEER
  • Heating Efficiency: 10.3 HSPF
  • Comfort Features: Best
  • Efficiency: Up to 30.5 SEER/10.3 HSPF
  • Application: Residential
  • Purpose: Heating and cooling
  • Type: Single room
  • Indoor Unit Type: High Wall
  • Cooling SEER: Up to 30.5
  • Heating HSPF: 10.3
  • ENERGY STAR® Qualified: Select sizes ENERGY STAR® qualified



  • Number of indoor fan speeds: 7
  • Summer Dehumidification: Compressor enhanced
  • Sound Level: 26 decibels
  • Sound Level Range: 53 decibels
  • Wireless Remote: True
  • Compressor Type: Variable-speed inverter
  • Proposition 65 Product Warnings: 343824 – 2 Lead and Lead Compounds

Infinity® series products represent the pinnacle of our communicating technology. This advanced system enables some of the best comfort features and energy saving advancements.

The GRQ model lives up to its Infinity name with features like a variable-speed compressor for quiet efficiency and up to 7 fan speeds. There are many convenience features built-in like smartphone control, sleep mode settings and timed start/stop on its wireless remote.


  • Up to 30.5 SEER cooling efficiency
  • 10.3 HSPF heating efficiency
  • 80% heating capacity at -20°F
  • Line lengths up to 82′
  • Variable-speed inverter compressor
  • 7 indoor unit fan speeds
  • Base pane heater
  • Auto louver mode
  • 180° vertical air supply
  • 46°F heating mode (heating setback)
  • Indoor sound: as low as 26 decibels1
  • Dehumidification mode
  • X-Fan mode
  • I FEEL function
  • 5-year parts limited and 7-year compressor limited warranties2



  • Wireless remote control standard
  • Smartphone control
  • Sleep mode


Quietest size within each model group during low fan-speed operation

To the original owner, 5-year parts and 7-year compressor limited warranties are available when product is used in an owner-occupied residence. For other applications a 1-year parts and 5-year compressor limited warranties apply. See warranty certificate for details.


  • Up to 30.5 SEER
  • Up to 15.8 EER
  • 10.3 HSPF
  • Select sizes ENERGY STAR® qualified



  • 7 indoor fan speeds
  • Indoor sound: as low as 26 decibels1
  • Outdoor sound: as low as 53 decibels2



  • Cooling mode Min-Max DB: Varies by unit size and voltage. Range is 0° – 129°F
  • Heating mode Min-Max DB: Varies by unit size and voltage. Range is -22° – 75°F



  • Up to 82′


  • Variable-speed invertercompressor technology
  • Voltage and current protection
  • Sound reduction: isolated compressor
  • Recommended control: wireless remote (included)



  • .75 – 1 1/2 ton



  • .75 – 1 1/2 ton 208-230 V (outdoor unit)
  • Indoor powered by outdoor unit



  • Heavy-gauge, galvanized steel construction (outdoor unit)

  • Primed and coated with a 100% coverage, baked-enamel finish in white (outdoor unit)

  • Modern, flat panel indoor unit in white or gray options COMPARE TO OTHER MODELS



Quietest size within each model group during low fan-speed operation.

Quietest size within each model group during most common cooling operating condition.