Carrier 42NL/NH Review


From $1843

Product highlights
  • Air quality management
  • User friendly interface
  • Volume flexibility
Compare Air Conditioning Rating
Brand reliability score
Capacity (kW) of systems in this series
0.6 kW - 12 kW

Key Features

Pressure Options

Optional low or high external static pressure capability plus a wide choice of plenums and spigot diameters.

Low Noise

Acoustic insulation and a very low noise fan motor delivers silent operations.

Smart Controllers

A wide range of smart controllers are available, including thermostats, a network Terminal Controller and water valve / fan speed controls that facilitate minimum energy consumption and maximum comfort.

Easy Maintenance

These units are designed with direct access to the air filter, water coil, drain pan and fan motor assembly, helping technicians perform maintenance.

Clean Air

Fresh air valves and a Co2 sensor provide quality air.

Energy Efficient

An optional brushless EC motor can reduce fan coil energy consumption by up to 50%, when compared to an AC motor.


Front Panel Colour
Silver and black
Reverse Cycle
Indoor Type
Ceiling Mounted
Power Supply
Manufacturer Warranty (Years)
5 years
Number of fan speeds


Specification0.6 kW - 12 kW
Model Number - Indoor Unit42NL/NH
Cooling Capacity (kW)0.6 kW - 12 kW
Heating Capacity (kW)0.8 kW - 17 kW

* C = Cooling H = Heating

Links and Documents

Operational manual and other product-related documents

Controller Features

  • BACnet & LON interfaces
  • Electronic thermostat
  • Remote capabilities
  • Easy to use interface
  • Individual or group controls
  • Large controller range
  • Scheduling

Other Features

  • Multi-speed motor
  • Numerous filter solutions
  • Sustainability


No Problems

Okay, I read a lot of the posts on this site. I have a Carrier and I have no problems. From reading the posts there is one thing that a lot of people overlooked that can be the cause of most of these problems. The duct work, if it is under-sized, broken, leaking can cause all of these problems. It may not be the system at all. Look at the duct work. In my area 90 percent of the duct work is way under-sized.

— David, 25 January 2012

Brilliant little bedroom air conditioner

We’ve had this Carrier in our bedroom for almost 2 years now and it has worked flawlessly. It will cool our 4×4 bedroom quickly and is very quiet both inside and outside, and the remote control is easy to use.

— Dog_780, 4 March 2020

Going Strong

It’s been a very reliable system that I use for heat and air conditioning and has been going strong for a lot of years and I’ve only had one repair on it. I would recommend in putting a system in your home as I’ve had good luck with it.

— G, 4 June 2020

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