Stuffy bedrooms hurt your sleep and health

Graph showing CO2 levels overnight in a closed room with two people sleeping, indicating fatigue and headaches at 1830 ppm.
SWERV Window Mounted ERV Installed into beautiful white window organic with plants and an Aranet 4 air quality sensor to improve CO2 levels inside without wasting heat

We help people with bad air who can’t open windows or install a central ERV

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SWERV Filtered Window ERV Open Panel
Diagram of features including a powerful quiet fan, high-efficiency ceramic energy exchange core, sleek rotary dial, easy access MERV 13 air filter, thick foam insulation, and finished bamboo front panel.

The smart window energy recovery ventilator (SWERV) brings in fresh air without sacrificing comfort, health, or energy

Ventilation without renovation for you to breathe fresh air year-round

Stuffy Bedrooms & Poor Sleep

CO2 levels spike to 1,000-3,000 PPM overnight in tight bedrooms, causing headaches, poor sleep, and reduced cognitive function.

Mold & Humidity Issues

Basements and tight apartments trap moisture and radon, creating mold problems and triggering asthma and allergies in health-sensitive households.

Outdoor Air Pollution

Wildfire smoke, highway pollution, and seasonal pollen make opening windows impossible, trapping you with stale indoor air.

Expensive ERV Quotes

Whole-home ERV systems cost $3,000-10,000+ and require renovations that your landlord won't allow.

The Future of Fresh Air

SWERV Fresh Air Machine Product Airflow Smoke Video reducing COw buildup in homes

SWERV installs in minutes to bring in fresh filtered air, push out stale air, and retain ~85% of the heat and moisture from the outgoing air stream

This patent pending system allows our ERV to be extremely small, powerful, quiet, easy-to-install/maintain, and highly efficient

Saving you energy bills and comfort while improving your health and cognition

Comparison chart of different HVAC products with their features and specifications.

Designed, Built, and Tested by our Team of Engineers in Boston

Call Austin (585) 645-3768