Case Studies
Some of our projects.
We've converted real buildings, in New England winters, for housing authorities managing some of the most complex properties in the region. Here's what that looks like.
01
Completed Jan 2026
277 units. 194 apartments. 12 days.
Largest window heat pump install in US history
By the numbers
194
Apartments converted
277
Heat pump units installed
12 days
Total install time (vs. 6–12 months conventional)
~60%
Heating energy reduction vs. electric baseboard
~$94.5K
Estimated annual energy cost savings
219 tons
Estimated annual CO₂e reduction
$1.2M
Total project budget (~$5,500/apartment)
$0
Electrical upgrades required (standard 120V outlets)
What made it possible
No construction, no electrical upgrades, and no disruption to residents' daily lives. Envr Air's logistics model — purpose-built for rapid multifamily deployment — enabled a 30-minute installation per unit across a fully occupied 15-story building.
Floor-by-floor resident meetings and advance notices made the process smooth from day one. For the first time in the building's 50+ year history, every resident has year-round heating and cooling they control themselves.
Featured in the press
"Climate tech startup Envr Air retrofitted a Providence apartment building to slash emissions and save energy costs."
Read the Fast Company story
02
Annual seasonal program
2,000+ units. Two weeks. Ivy League trust.
End-to-end seasonal deployment
By the numbers
2,000+
Portable AC units installed each summer
2 weeks
Install time — and another 2 weeks to remove
6 weeks
Daily on-call service across the summer program
Full-service summer cooling at Ivy League scale
Each summer, Brown University fills its dormitories with a 6-week summer program — and the buildings need reliable cooling for thousands of students and guests. RentAnAC (Envr Air's sister company) handles the entire cycle: we procure the units, unpackage and stage them, install 2,000+ portable ACs across campus in two weeks, and provide daily on-call service for the duration of the program. When the program ends, we remove every unit in two weeks flat.
It's a complete logistics package — procurement, installation, service, and removal — and it's the kind of operational discipline that universities trust us with year after year.
03
Ongoing since 2014
1,000 units. One week. 14 years running.
14+ years of partnership
By the numbers
~1,000
Units deployed annually
8 days
Cumulative installation time
14+
Years deploying ACs in partnership with Tufts
Why it matters
Summer heat is a genuine safety concern for residents and guests in older campus buildings. Our seasonal deployment ensures reliable cooling from day one, every year, without disruption to university operations.
The program runs on a tight seasonal timeline, completed cumulatively in about a week. Funded through pass-through revenue, the program runs at little direct cost burden to the university and has for over a decade.