Specifications

Heartland Owners Forum http://manuals.heartlandowners.org
Heating and Cooling Guide V1.pdf Page | 9 Version: 1, March 15, 2013
the cold air streams. In most cases, the bedroom unit will quickly cool the bedroom down and the air
stream can then be directed toward the hallway to help cool the living area.
Toy Haulers with Three Air Conditioners
Some of the toy hauler trailers have an option to install a 3
rd
air conditioner in the garage. Operation is
similar to the living room and bedroom air conditioners. But due to the high electrical load that air
conditioners require, only two can be operated at any time. The living room unit is always powered, but
a transfer switch cuts power to the bedroom when the garage air conditioner is turned on.
Although 50 Amp shore power may provide enough power to run all three units at the same time, the
generator in the toy hauler does not. Due to that limitation only two can operate at the same time.
Whisper Quiet Air Conditioning System
The Whisper-Quiet system comes standard with 15,000 BTU high efficiency air conditioners in both the
living area and the bedroom, along with a redesigned ducting system that combines the cold air output
and warm air return from both units. Each air conditioning unit is controlled by its own thermostat; one
in the living area and the other in the bedroom. The separate thermostats and combined ductwork
allow owners to customize how the two units work together to better cool the entire trailer and even
out air temperatures.
Because of the redesigned ducting, the compressor and blower motors are repositioned to reduce noise
inside the coach. The larger bedroom unit is taller than the lo-profile 13,500 BTU unit used on other
coaches and raises the highest point of the coach by 3-4” to a new height of 13’3”.
Minimizing A/C Noise in the Living Room or in the Bedroom
A key advantage of the Whisper Quiet system is the ability to tailor settings to minimize noise in the
living room or in the bedroom.
To minimize noise in the living room, set the bedroom thermostat to a very low set-point temperature.
With the FAN set to AUTO, the temperature differential will cause it to run on HIGH and pump lots of
cold air through the integrated ducts, into the living room. The living room thermostat FAN setting can
be changed to LOW, with a higher set point temperature for cooling mode. The living room A/C will
then operate quietly, but will still circulate the cold air coming from the bedroom A/C.
When getting ready to go to sleep, you can reverse these settings to keep the bedroom cool with
minimum A/C noise.