Our Services: Meet the Cozy Custom

Image of a white cabinet covering a cast iron radiator and a heat pump in the window

What is it?

The Cozy Custom is a smart radiator cover that provides residents with individual heating controls. The Cozy works with the existing heating system, providing heat when the boiler is on, but then traps any excess heat inside of the insulated cover when the resident’s desired temperature is met. This prevents overheating and forces the excess steam to parts of the building that are typically under-heated, balancing out the building’s steam distribution system. Covers are custom made to the size of each radiator.

  • 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:

Drawing of a cast iron radiator
Close-up of a slot machine with various symbols, including a bar, cherry, and bell.
recessed convector line drawing

Cast Iron radiators

Baseboard

Recessed Convector

Cozy Homes

Long Cozy Custom underneath a large window
The corner of a dining room with a window on each wall. Beneath one window is a smart radiator cover with plants on top.
Cozy Custom painted dusky pink to match the walls
Cozy Custom in an empty room
Cozy Custom being used as a nook shelf
Cozy Custom used as a bench
Cozy Custom in a child's room
Cozy Custom in a blue room

How do Cozy Solutions compare to traditional TRVs?

TRV with white knob set at 3
Cozy Custom product image

Feature

Traditional TRV

Cozy Custom
Price ~$100 prior to professional installation $0 upfront cost (subscription) or $750 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 Custom Specs

Labeled Cozy Custom from front
Labeled profile of Cozy Custom

e-kit

Labeledn e-kit board for Cozy Custom tech specs

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