Smart thermostat accessories ≫ Accessories and add-ons

Smart thermostat wiring adapters

Top Smart thermostat wiring adapters

Briidea Add-A-Wire 24VAC Common Wire Kit

★★★★★ ★★★★★ 8.5/10

Litorange 2x 304 Stainless Steel Radiator Valve Adapter (M30×15)

★★★★★ ★★★★★ 8.3/10

C-Wire Adapter (CWIREADPTR8001/E)

★★★★★ ★★★★★ 7.8/10

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🏆 Best choice

Add-A-Wire Accessory, Briidea Common Wire Kit for All 24VAC Thermostats (4 to 5 wires), White

Briidea Add-A-Wire 24VAC Common Wire Kit

★★★★★ ★★★★★ 8.5 /10

+ Effectively adds an extra thermostat function (C-wire, W2, or cooling) without running new cable

+ Very affordable compared to paying someone to pull new thermostat wiring

+ Works with common smart thermostats (Nest, Ecobee, Sensi) on standard 24VAC systems when wired correctly

Litorange 2 x 304 stainless steel heating valve adapter, radiator valve thermostat head with strips, radiator thermostat RA adapter to M30 x 15 Set A

Litorange 2x 304 Stainless Steel Radiator Valve Adapter (M30×15)

★★★★★ ★★★★★ 8.3 /10

CWIREADPTR8001/E C-Wire Adapter for Smart Thermostats: A Power Solution for Smart Thermostats Without a C-Wire

C-Wire Adapter (CWIREADPTR8001/E)

★★★★★ ★★★★★ 7.8 /10

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Smart thermostat room sensors

Smart thermostat mounting plates