The Right HVAC Solution for Low-Load and Net Zero Homes
According to the U.S. Department of Energy, residential homes are responsible for 21% of the energy used in the country each year. More and more people want to reduce the amount of energy their homes use each year to save costs and to help the environment. These are two core reasons that have contributed to the rise in demand for low-load and net zero homes.
The HVAC system is a crucial piece in the design and build of a low-load or net zero home as it determines how energy efficient a residential home can be. Let’s look at the best HVAC solution for low- load and net zero homes.
Airtight Homes Need a Reliable HVAC System
One of the ways low-load and net zero homes reach high levels of energy efficiency is by having an airtight building space. The structure of the house is specifically designed to reduce the amount of conditioned air that leaks out. This type of design also helps the living space be more comfortable due to less air escaping, allowing for even temperatures.
The HVAC system that’s chosen for low-load and net zero homes is essential. Even when the building has an airtight envelope, leaking ducts throw the system off balance. Traditional metal ductwork is known to have higher levels of thermal loss compared to small-duct, high-velocity (SDHV) systems. That temperature loss forces the HVAC system to work harder, spending more energy to make up for the deficit.
With The Unico System, this is not an issue. The ductwork is one-third the size of traditional ducts and achieves one-third less thermal loss. The supply tubing is wrapped with an outer vapor barrier and insulation that’s designed to keep nearly all the thermal energy inside the ducts. Through third-party testing1, it’s documented that traditional HVAC systems lose up to 25% of the air pushed through the ducts – while Unico loses less than 5%.
The Unico System Can Be Paired with Chiltrix for Added Comfort and Efficiency
Chiltrix by Unico is the leader in air-to-water heat pumps. It’s a great energy-efficient addition to HVAC systems in net zero and low-load homes. The Chiltrix unit pulls in heat from the outdoor air and transfers it to water. Its design allows Chiltrix to be compatible with a variety of popular systems for net zero and low-load homes, like underfloor heating or radiant cooling.
Every Chiltrix unit is a load and capacity-aware heat pump. Plus, there’s a variable-speed inverter compressor and pump to help ensure the system doesn’t use more energy than it needs. It’s one of the best energy-efficient solutions for all-electric homes and is AHRI-certified, just like The Unico System.
Chiltrix by Unico offers all these benefits while ensuring there’s no refrigerant inside the home thanks to its monoblock design. All its critical components, like the compressor, condenser and evaporator, are housed in the outdoor unit. Through insulated water line connections, Chiltrix works with The Unico System to offer homes optimal comfort with high efficiency.
Small Duct, High-Velocity HVAC Systems Fit in Any Home Design
Net zero and low-load homes are built with the targeted intention of reducing energy usage. Part of this process involves putting in heavily insulated walls to reduce thermal loss, reducing the amount of space for traditional metal ducts, insulation and other design elements. This problem is one of the reasons why single-zoned duct systems became popular in net zero homes.
The Unico System is perfect for net zero and low-load homes because it fits where other HVAC systems simply cannot. The small, flexible ducts can be easily woven through the floor or walls--there’s no need to adjust the design of the home to accommodate it. Also, The Unico System is less disruptive than other options--not only keeping the home more comfortable with less energy, but it also saves time during the construction process.
See How The Unico System and Chiltrix Fit Into Your Home Design
If you are a manufacturer or architect, Contact our Design Services Team today and we will look at your modular home plans and develop a system configuration that works. You’ll even be able to install part of the system at the factory for increased efficiency.
If you are a homeowner, Find a Unico Rep to start the process of developing a system configuration that works best for your modular home plans.
1U.S. Department of Energy – Better Duct Systems for Home Heating and Cooling. https://www.nrel.gov/docs/fy05osti/30506.pdf
