A Historic, Headache-free Retrofit: Noble Design Meets New Technology

An image of historic homes in Georgetown, WA.
Energy Efficiency
Ductless solutions offer an easier, less renovation-oriented approach—especially if you want to maintain the classic look and feel of your heritage home.

Character homes have a lot to offer: spacious floor plans, old-world craftsmanship, and an enduring sense of style. Transom windows, gabled roofs, and elaborate brick work are just some of the charming and expressive traits that color the homes of yesteryear.

With a romantic view of the past, it’s easy to forget the drain that inefficient heating systems and envelope wear and tear can have on your energy bill. Without modern retrofitting—i.e. heating and/or envelope upgrades—your happy, historic home can quickly turn into a bottomless, energy sink.

Where To Start

...Next-generation design standards, like Germany’s “passivhaus” (passive house), are a great source of inspiration for modernizing your home.

The passivhaus standard shows that simple fixes, like adding extra insulation to problem areas or upgrading your building envelope, can make a big difference to your energy bill. Pairing these relatively easy and cost-effective changes with a new, ductless heating system is a great way to go—especially if you’re still using baseboard heaters. A ductless system is one way around the messy, disruptive remodelling that comes with a traditional HVAC installation.

Go Ductless To Save Your Floor Plan

... Ductless solutions offer an easier, less renovation-oriented approach—especially if you want to maintain the classic look and feel of your heritage home.

Installing a traditional, forced-air system can be messy business. Between a bulky furnace unit, yards of ducting, and a bevy of vents, it’s easy to see why many people have kept their baseboard heaters over the years.

Accommodating a central-air system isn’t exactly easy on your floor plan. Stowing away the furnace in the basement, for example, can take up loads of valuable real estate—especially if it’s a lived-in space. Concealing the furnace behind a wall, or in a separate room, can improve the aesthetics of the situation, but unfortunately, may also mean a radical redesign of your floor plan—walls included.

Ductless solutions avoid this scenario altogether by moving your cooling and heating system outdoors, where it can be tucked away behind a tree or hedge. This preserves your original floor plan without cluttering vital, indoor real estate.

Overall, the biggest headache involved with installing traditional heating systems is the ductwork. To accommodate this extensive circulatory system of sheet metal, or flexible ducting, walls need to be opened up to allow room for supply and return air ducts. Some opt to build box-like enclosures overtop of existing structures, but this really compromises the character of a historic residence.

Once again, a ductless solution is the easy answer. With the main compressor unit outdoors, only a slim line is required to reach an indoor, air-handler interface. With only very minimal structural work required, this solution best preserves the original wall and floor plan.


Retrofitting your older home doesn’t mean you have to plastic-wrap your entire lifestyle. If you follow an easy-to-implement solution, like a ductless split for heating and cooling, you can maintain your original floor plan while enjoying environmentally friendly climate control.


The O'Neill Passive House Case Study

Energy Efficient Building Envelope Retrofits for Your House

This article and its content are sponsored by Mitsubishi Electric US Inc., Cooling & Heating Division.

Join Our Ongoing Conversation:

Follow Us on Twitter @MitsubishiHVAC and Facebook

Chosen Just For You

An image of a tree shading a backyard patio from the sun.

Style and Energy Savings: Strategic Shade Tree Planting

An image of a modern, livable attic space.

Zoned Comfort and What it Means for You

Couple smiling about energy bill savings

Big Home, Small Bills. Here's How

An image of a hair dryer and other beautification products.

Condition Your Home for the Cost of Blow-drying Your Hair

An image of a wall-mounted unit on the wall of a passive energy home.

Split-ductless: A Well-Matched System for Passive Homes

An image of a woman enjoying a summer breeze through an open window.

Filtration: The Way to Better Indoor Air Quality

View of a house using modern architecture.

A Retrospect on American Design: Modernist Architecture

A woman uses her smartphone to interact with her home.

Sci-Fi Smart Homes that Adapt to Your Every Need

Live chat is not available