Sustainability can sound expensive when you’re running a small lab. New equipment, major facility upgrades, consultants, certifications — it’s easy to assume meaningful progress requires money you’d rather put toward the science.
But low-cost small lab sustainability wins often start somewhere much simpler: with the equipment, materials, and everyday practices you already have.
Small labs can have an advantage here. With fewer layers of approval and smaller teams, a practical change can sometimes move from idea to everyday habit surprisingly quickly.
One small lab found its place to start
During a LabRenew webinar, Stephen Miller shared the experience of a small laboratory in Gloucester, Massachusetts. The team initially felt overwhelmed by sustainability and wasn’t sure where to begin.
After a single facility assessment, they found several manageable opportunities. They introduced composting in the kitchen, switched some containers from plastic to reusable glass, and adjusted appropriate ultra-low-temperature freezers from −80°C to −70°C.
None required a sweeping sustainability program. They simply found changes that made sense for their lab and started there.
As Miller explained:
“They possessed limited financial resources and unclear direction initially. Currently, they can demonstrate measurable environmental progress without incurring expenses.”
Low-cost lab sustainability can start with cold storage
ULT freezers are a particularly good place to look because they operate continuously and can consume substantial amounts of electricity.
For samples that can safely be stored at the higher temperature, My Green Lab reports that increasing a ULT freezer set-point from −80°C to −70°C can reduce energy consumption by 30–40% and may also reduce strain on the freezer.
That doesn’t mean every freezer should automatically be changed to −70°C. Sample requirements come first. But it does mean −80°C doesn’t need to be an unquestioned default when the science allows otherwise.
And this isn’t only theoretical. A 2026 case study of shared research laboratories at a U.S. public university estimated that temperature adjustments to 35 ULT freezers produced approximately 40,500 kWh and $4,900 in gross annual savings.
Look at what stays on, open, or running
Fume hoods are another opportunity, although the details matter.
In variable-air-volume laboratory systems where sash position affects exhaust airflow, closing fume hood sashes when the hood isn’t being used can reduce energy consumption. A DOE case study at UC Santa Barbara verified average savings equivalent to about $1,300 annually per fume hood in a high-fume-hood-density building. DOE also cautions that the same savings don’t apply to every ventilation configuration.
That makes simple reminders, sash stickers, and good operating habits potentially useful when the laboratory’s ventilation system can benefit from them.
The same thinking can be applied elsewhere. Look at equipment that remains on overnight or over weekends, lights in unused areas, freezer ice buildup, unnecessary water use, and other routine loads. The question isn’t “What can we turn off?” It’s “What needs to be running — and when?”
Waste can cost money before and after you use it
Small labs can also look at what they’re throwing away and why.
Gloves, containers, packaging, consumables, and other materials don’t all belong in the same waste stream. But recycling programs vary by material, contamination status, facility, and location, so don’t assume non-contaminated laboratory gloves can simply go into ordinary recycling. Where a validated glove-recycling or take-back program exists, uncontaminated gloves may be eligible.
There is an even simpler opportunity upstream: use less material in the first place. Buy quantities you’re likely to use, avoid unnecessary single-use products where a safe reusable option exists, and make sure materials aren’t expiring on a shelf.
Waste reduction often begins before something becomes waste.
The best low-cost changes usually aren’t dramatic
That may be the most important lesson from the Gloucester lab.
Sustainability didn’t begin with a large capital project. It began by looking at ordinary operations differently.
For a small lab, that might mean:
- Checking whether appropriate ULT freezers need to be at −80°C
- Reviewing equipment schedules and shutdown practices
- Closing fume hood sashes when appropriate
- Defrosting and maintaining cold-storage equipment
- Reducing unnecessary single-use materials
- Reviewing purchasing quantities before products expire
- Making sure waste is entering the correct waste stream
- Looking for utility rebates before replacing equipment
Some changes cost nothing. Others may require a small investment. And not every idea will make sense for every lab.
The goal isn’t to do everything. It’s to find the changes where effort, savings, and environmental impact line up.
Small labs may have more influence than they think
A smaller budget doesn’t have to mean smaller impact.
In fact, the constraints of a small lab can encourage exactly the kind of thinking sustainability needs: use what you have well, question unnecessary consumption, maintain equipment, prevent waste, and spend money where it creates the most value.
That’s operational efficiency as much as environmental responsibility.
And once one change becomes normal, the next one often becomes easier to see.
Start with what you can control
You don’t need a sustainability department, a large capital budget, or a perfect plan to begin low-cost lab sustainability.
Start with one freezer. One waste stream. One purchasing habit. One piece of equipment.
See what changes.
Then decide what’s worth doing next.
Wondering where the easiest wins are in your lab?
LabRenew can help you identify practical opportunities that fit your operations, your science, and your budget — including changes that may reduce waste and operating costs without requiring a major sustainability project.
Explore LabRenew Savings Opportunities
You can also watch the original LabRenew webinar on YouTube that inspired the Gloucester lab example.