Ductless heat pump brings comfort to historic Upper Arlington home

Custom Air upgrades historic old house with ductless heat pump and personalized 3rd floor climate control

Project Profile – Third floor, 3 room Daikin ductless heat pump HVAC installation

Location – Upper Arlington, OH 43221 in Franklin county


The residents of an Upper Arlington, OH home were facing a persistent issue, the third floor of their house was unbearably hot during the summer months and even on sunny winter days. The excessive heat made the living conditions uncomfortable for the family, particularly in the bedrooms.

Situation & Problem

The third floor of this home consisted of three separate rooms, all of which experienced extreme heat, especially on sunny days. The existing HVAC system failed to adequately cool the area, leaving the occupants feeling restless and uncomfortable. This issue highlighted the need for an effective and efficient cooling solution that could provide year-round comfort for the family.


After carefully assessing the situation, our HVAC experts recommended the Daikin multi-head mini-split system as the optimal solution to address the unique challenges of this home. This innovative system allowed us to install one indoor air handler for each of the three rooms on the third floor, ensuring consistent and customizable cooling throughout the space. The Daikin system’s advanced technology offers energy efficiency, quiet operation, and individual temperature control for each room, providing the family with the flexibility to adjust the cooling as needed for their comfort.

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The ductless installation at Custom Air worked diligently to implement the Daikin multi-head mini-split system with minimal disruption to the home’s occupants. We carefully positioned the indoor air handlers to optimize air distribution and ensure that the aesthetic appeal of the rooms was maintained. In addition, our team provided the homeowners with detailed instructions on how to operate and maintain their new HVAC system to ensure its longevity and efficiency.


The Daikin ductless warranty is another great aspect,  providing peace of mind for our customer. This installation has  a Daikin warranty of 12-Year Parts & 12 year labor.

And with the 12 year warranty our customer gets additional comfort and ease. Call or Text anytime at (614) 552-4822 or use our contact form for a free estimate or to schedule service.  With over 48 years of experience, you can count on Custom Air to do it right.

Improper HVAC installation can cut 30% off efficiency, leading to higher bills & shorter equipment lifespan.



Since this ductless installation, the residents of the Upper Arlington home have reported a significant improvement in their living conditions. Each room on the third floor now cools effectively on warm days, providing the much-needed comfort for the family members sleeping in the bedrooms. The family is now able to enjoy a consistently comfortable and pleasant living environment all year round. 

We offer ductless service, repair & maintenance.

We’re committed to restoring your comfort. Call or Text (614) 552-4822 or contact us here about our Ductless solutions.

More project details & sources

Custom Air Comfort advisor, Chris Holben, provides more detail on the Daikin Ductless heat pump equipment used in this project:

Three Daikin FVXS floor mount air handlers were used. These floor mounted units are simple to install and can be set up in various configurations, on the floor or hanging low on a wall. Its low height enables the unit to fit beneath a window. The airflow distribution pattern of Daikin’s floor mounted unit is ideal for heating a space, and is a perfect replacement to traditional radiant systems.

These units Feature:

  • Indoor Sound Pressure as low as 19 dB(A)
  • Washable Air Filter
  • Program Dry Function
  • Econo Mode
  • Backlit Wireless Remote Controller
  • Outdoor Unit Quiet Operation
  • Self-Diagnostics with Digital Display

More on the Daikin FVXS Floor Standing unit

Daikin MXS outdoor heat pump

A single Daikin MXS outdoor heat pump powered all three third floor bedrooms. These Multi-Split Systems are ideal for multi-room applications desiring individual room comfort in a space-saving design. With the ability to connect up to four indoor units to a single outdoor unit, over 1,000 combinations are possible with the choice of wall mount units, slim duct units, ceiling cassette units or a combination. Suitable for both new build and renovation projects.

  • World-renowned Daikin Inverter Variable Speed compressor technology
  • Space-saving design and precision temperature control for individual rooms
  • Cooling Range 14°- 115°F
  • Heating Range -5 – 60°F
  • Quick and easy installation
  • Quiet operation
  • SEER2 Up to 20.6, HSPF2 Up to 9.7
  • R-410A Refrigerant Compatible

More on the Daikin MXS outdoor heat pump

About Custom Air

Residential and Commercial HVAC. It’s all we do. 
Columbus, OH trusts Custom Air for all their heating & cooling needs, from installation to service to financing. With over 48 years of experience, Custom Air is an HVAC contractor specializing ONLY in residential and commercial heating & cooling.

Expertise Matters. Trust Custom Air.
Call or Text anytime at (614) 552-4822 or use our contact form for a free estimate or to schedule service.

More about Custom Air

  • About Custom Air – Trusted residential & commercial heating & cooling services since 1976
  • Why Custom Air A commitment to customer satisfaction, energy efficiency & HVAC innovation
  • Reviews – Honesty, transparent pricing, outstanding service and skilled technicians
  • Awards & Recognition – Often recognized, including the Best HVAC Company in Central Ohio
  • Service Areas – Serving greater Columbus & Delaware, Ohio and 10 central Ohio counties daily