Party Walls

Air-Source Heat Pumps in Homes: Step #1 – Be clear about goals

This is part of a series; see the first post here.

Building new homes that are all electric makes TONS of sense. I’ve written about that before. Electrifying existing single-family homes, however, is not necessarily straightforward. Many state and utility programs in the Northeast[1] offer hefty incentives for air-source heat pumps (ASHPs), but fuel-fired systems are often left in place and used as the primary heating system. Clearly, when that’s the case, carbon emissions are not reduced much. Other programs are pushing completely electrifying homes and removing fossil fuels, but these programs are not gaining all that much traction.

This may seem obvious, but it’s important to consider homeowners’ goals and desires when installing heat pumps in homes. I don’t necessarily see this considered by policy makers and electrification programs, and I think it’s a big disconnect. Programs and policies are focused on the big picture (appropriately) and generally want to reduce/eliminate fossil fuels to help meet carbon reduction goals. What homeowners want can vary like crazy.


Air-Source Heat Pumps in Homes: Soup to Nuts

As I’ve written in several posts [1], electrification is all the rage. Modern air-source heat pumps (ASHPs) are fantastic technologies, and they can provide reliable, efficient, clean, affordable, and sustainable heating and cooling when done well and in the right application. I worry that these caveats are too often glossed over. I’ve also seen really bad heat pump installations, and I think it’s easier to screw up a heat pump than a boiler or furnace.

ASHPs on the exterior of a home

Three ASHPs at a home

This post is an overview of the process I suggest for good ASHP installations. I’ll be doing a post for each of the steps here, but this first post is an outline of the whole process because I believe the whole process is really important. The focus here is on homes, mainly in colder climates, and I’m not talking about VRF systems. I use the generic second person, so “you”  can refer to different people in different steps.


Improving the Efficiency of Your Single-Family Home

Buying a home can be overwhelming. There are many factors that need to be considered and decisions that need to be made. For many Americans, aesthetics often outweigh certain characteristics critical to a home’s success, such as health, comfort, and efficiency.

To help us evaluate these critical characteristics, we’ve asked SWA’s COO and Mechanical Engineer, Srikanth Puttagunta, to walk us through his recent home-buying experience. Sri discusses ways to maximize a home’s value by taking advantage of incentives, enhancing existing infrastructure, and making the key decisions that may benefit your family’s health and comfort for years come. Join us as we dive into the essentials of single-family home ownership.  (more…)

Getting The Most From Heat Pumps

Air-source heat pumps (ASHPs) are a booming business. In the Northeast, manufacturers report that sales of residential systems have increased by 25-35% per year over the past 5-10 years. We’ve seen more and more systems being installed in all types of buildings.

On this episode of Buildings and Beyond, Kelly sits down with her co-host and Principal Mechanical Engineer, Robb Aldrich, to uncover the potential benefits associated with ASHPs and how to get the most from these systems. (more…)