The Cozy Core: Convector Radiator Solutions — Kelvin
Our Services: Meet the Cozy Core
What is it?
The Core is a convector radiator solution that balances building heating, enables temperature controls to residents, and provides heating cost savings for facility managers. The Core is comprised of two parts: a digital temperature controller and a small, internal fan. The digital temperature controller attaches to the outside of your radiator enclosure and communicates with a fan that is placed inside of the enclosure, which we insulate. The digital controller has a built in temperature sensor, so when you set your desired temperature the sensor will communicate to the fan to release hot air into the room.
- 25.5% average savings, as verified by NYSERDA
- Real time monitoring and analytics
- Tenant controlled
- Compatible with baseboards radiators, recessed convectors, and cast iron radiators with covers
- Child and pet safe
Compatible with:
Cast Iron with covers
Baseboard
Recessed Convector
How do Cozy Solutions compare to traditional TRVs?
| ### Feature | ### Traditional TRV | ### Cozy Core |
|---|---|---|
| Price | ~$100 prior to professional installation | $0 upfront cost (subscription) or $350 before incentives |
| Energy Savings | ~13%, and degrades each year (7–3 MMBTUs) | 25.5% average (NYSERDA validated). No degradation. (10+ MMBTUs) |
| Control | Manual control; no pinpoint accuracy. Natural convection. | Automatic precision control for individual radiators. Forced convection. |
| Installation | Requires a certified plumber & piping work | Included in service; no plumbing; 30 mins per unit |
| Data & Analytics | None | Comprehensive building data, health monitoring, and fault detection |
| Maintenance | Annual balancing/tuning; 7-year failure rate | Automated reporting; <10 min replacements; 15-year failure rate |
| Future Implications | No pathway to additional improvements | Adaptive electrification strategy for LL97 compliance |
Cozy Core Specs
e-kit
POWER REQUIREMENTS:
Each unit is operated by a single fan requiring 12v DC power. Units consume less than 12 Watts of power at max draw (1A at 12V). This power can be provided via an included AC adaptor, which requires a standard 110VAC outlet within 10 ft of the fan unit, or 12V DC power can be brought to the unit from a UL-Certified building source. If an outlet is greater than 10ft from the unit, an extension cable of AWG 22 or larger, maximum 50ft in length, can be used to bridge the distance.
NETWORK REQUIREMENTS:
Each unit contains a wireless radio, that requires proximity to an associated network for communication, which will be provided by Kelvin before system installation.
Download spec sheet
Get a Custom Energy Savings Analysis
50% - 75% off Heat Pumps
NYSERDA’s Clean Heat for All initiative has approved a $10 million fund (PON 6037) covering 50% -75% off heat pumps in multifamily buildings.
Partner with Kelvin and we will apply on your building’s behalf. Funding is first come, first served, and applications close June 2027.
Schedule an introductory call or enter email for more information.