Thermally Boring: Ductless Heating and Cooling

Advantages of Ductless Heating and Cooling

Peckham Architecture’s LEED Platinum home headquarters in Columbia, Missouri, uses ductless heating and cooling and HRV (heat recovery ventilation) to maintain clean, comfortable indoor air. These tools contribute to net-positive energy: Our green building produces more energy than it consumes. During the hottest May on record (2016), we earned a negative electric bill (-$176)! Yet many Americans still don’t know about these technologies.

This green building in Columbia, Missouri, uses ductless heating and cooling and other sustainable technologies to achieve net-positive energy.

Ductless heating and cooling is, by definition, far more efficient and flexible than typical ducted systems. In the video below, Jamie Callahan of Columbia-based Air & Water Solutions talks about our Mitsubishi Electric ductless heating and cooling system, also known as a mini split.

“The United States is the only place that uses duct work,” Callahan says. “Everywhere else in the world has been using mini splits for over 40 years. So we’re just behind on the technology.”

Ventilating a Green Building

Our green building is sealed and insulated to the point of being airtight, which poses unique ventilation challenges. The Zehnder HRV system was custom designed for the needs of this house.

“With this house being so tight, you have to control moisture, smells, VOCs,” Callahan says.

The HRV system replaces the stale, humid indoor air with fresh air from outside. Inside the energy recovery core, energy from the “old” air heats the incoming “new” air to nearly the same temperature before distributing it in the home. This creates constant indoor climate stability.

“It’s complete comfort control, as well as energy savings,” Callahan says. “So we’re far above and beyond a standard construction home on efficiencies.”

Thermally Boring means Energy Efficient

In the video below, green building expert Dave Horton uses a thermal imaging system to detect heat transfer in our eco house. Buildings are full of thermal bridges, or areas where energy typically escapes: the slab foundation, doors and windows, walls and ceiling, and the roof. Luckily, green building insulation can dramatically reduce heat transfer. This is one time when boring is best—Horton’s thermal imager showed very little activity.

“There’s not a whole lot that looks thermally different,” Horton said. “If it’s thermally boring like that, that’s what you want. You want it to all just look the same.”

Horton says this project “could very well be the greenest house that I’ve ever worked on, if not the greenest house anyone has ever worked on.”

Get a closer look here:

Make your new construction or renovation deep green. Peckham Architecture offers prospective clients a free initial meeting of up to 1 hour.

Contact us today to see what’s possible: 573-777-4444

PREVIOUSLY: Insulating your green building with liquid house wrap and blown in cellulose:

Green Building Insulation: Liquid House Wrap and Blown In Cellulose

Green Building Episode 6: How HRV and Mini Split Systems Save Energy

This short film is Episode 6 of Peckham Architecture’s 11-part documentary series on how to construct a green building for energy efficiency and a lower carbon footprint. This episode shows the installation of HRV (heat recovery ventilation) and mini split systems and explains how they contribute to energy conservation in a passive house.

Peckham Architecture’s LEED Platinum home headquarters is Missouri’s first Passive House Institute US (PHIUS) Certified building. Solar panels and super insulation make our eco house net-positive, which means that it produces more electricity than it consumes. LED lights, a tankless water heater and Energy Star appliances further improve our energy efficiency.

Our passive house has also been featured in the Columbia Business Times and Columbia Missourian.

To learn more or start your own green building project, contact us today.

 

More from our eco house: 

Green Building Episode 5: Using Liquid House Wrap and Recycled Blown In Insulation

Green Building Episode 7: How our Passive House Aced the Blower Door Test