Welcome to our Fujitsu RLS3 Vs Mitsubishi FH minisplit heat pump show down post.
We have received a lot of questions lately asking, “what heat pump is best?” It’s tough to give a definitive answer to this question, but we can provide a straight comparison of the specs and stats.
Numbers don’t lie, and it’s the best place to start when comparing heat pumps.
Other posts in this series if you want to check them out:
We are going to compare the most important specs between the Mitsubishi 12,000 BTU FH model and the Fujitsu RLS3, including:
- Heating capacity
- Operating temperatures
- HSPF (heating seasonal performance factor)
We will leave out the special features each brand may have, as these will be important to some homeowners, but not to others.
Lets get started.
Ductless heat pump sizing (e.g. 12,000 BTU’s) is always based on the cooling capacity.
The Fujitsu has a nominal heating capacity of 16,000 BTU’s while the Mitsubishi is 13,600 BTU’s.
This rating is taken at approximately 8° celsius. From our comparison chart above, you can see at -8° C the Fujitsu RLS3 produces approximately 17,600 BTU’s of heat, while the Mitsubishi produces 13,600 BTU’s of heat.
This spec is a more important to compare as it’s below zero degrees.
Comparing heating capacity, the Fujitsu wins hands down.
Want to watch the video instead of read the post? Click play below.
The Mitsubishi works all the way down to -25° celsius without any additional pan or base heaters. While the Fujitsu RLS3 works down to -21° celsius. Mitsubishi has the edge on operating temperature, but we have to bring up the point that even at -21° C the Fujitsu is producing 15,000 BTU’s of heat, while the Mitsubishi has dropped off to 9,900 BTU’s of heat.
There is a second Fujitsu model available, called the RLS3H. You can see the specs for this unit in the middle column above.
The RLS3H model includes a base heater and costs approximately $200 more than the non-base heater model. The primary benefit is the RLS3H unit operates down to -26° celsius while still producing 11,600 BTU’s of heat. The base heaters also prevent freezing and ice build up on the unit at low temperatures.
HSPF and Operating Efficiency
The heating seasonal performance factor is the best way to compare efficiency’s of one heat pump to another. Between the Mitsubishi FH and RLS3 Fujitsu there is a glaring difference of 14.0 for the Fujitsu and 11.5 for the Mitsubishi.
What does this mean to you?
The Fujitsu will use less electricity to create the same amount of heat at optimal outdoor temperatures (e.g. approximately -15° C) compared to the Mitsubishi. So it will cost less to run.
You can see there are two warranties listed for the Mitsubishi. The top is the warranty you receive if purchasing from a non-certified Mitsubishi dealer. The bottom is the warranty you receive when you purchase from an authorized Mitsubishi dealer. We are a certified Mitsubishi dealer, so we’ll compare the second warranty.
Fujitsu, when purchased here in Nova Scotia and from an authorized Fujitsu dealer (which we are), gives you a 10 year parts and labour warranty. Mitsubishi’s warranty is 6 year parts, 10 years compressor and 6 years labour.
While the 6 years labour is above industry standard on the Mitsubishi, it’s not enough to beat the 10 years provided from Fujitsu in conjunction with the distributor Master Group.
Other Features to consider
We mentioned at the beginning that each brand offers their own special features, which cannot be compared in a table. I would be doing you a disservice if I left them out of this comparison.
The most important feature to mention is Mitsubishi’s 3D i-See sensor technology. This feature detects cold spots in a room and sends heat in that direction to maintain even temperature throughout the room.
This technology is very accurate and of interest to some home owners.
Mitsubishi also has the ability to direct air flow in two different directions at the same time. By dividing their louver system in two, you can effectively direct heating or cooling up a stairwell and into a main floor room.
This feature has very specific application settings, but the Mitsubishi FH is the best model for the job.
- Fujitsu produces 16,000 BTU’s of nominal heat to Mitsubishi’s 13,600
- At -8° C the Fujitsu produces 17,900 BTU’s of heat to the Mitsubishi’s 13,600 BTU’s
- The Mitsubishi operates down to -25° C while still producing 9,900 BTU’s of heat where the Fujitsu goes down to -21° C but maintains 15,000 BTU’s of heat
- There is an optional base heater model from Fujitsu which operates down to -26°.
- The Fujitsu is more efficient to operate with an HSPF of 14.0 to Mitsubishi’s 11.5
- The Fujitsu warranty of 10 years parts and labour is better than Mitsubishi’s 6 Year parts, 10 years compressor and 6 years labour
In a battle of the specs the Fujitsu 12,000 BTU RLS3 model is the champ over the Mitsubishi 12,000 BTU FH. However, don’t count the Mitsubishi down and out. The secondary features, such as the 3D i-See technology and multiple louver settings, means there are several niche applications where the Mitsubishi will do a much better job.
How can you know which one is best for your home?
Give us a call or submit the form on the right of this page to arrange an in-home heat pump assessment with one of our Home Energy Specialists.
We look forward to hearing from you!