Free Shipping on orders over $300. Some exceptions apply 1-866-361-4782
Home > Forced Air > Electric Plenum Heaters

Thermolec Electric Plenum Heaters


The most reliable plenum heater available

  • 10-year warranty on high grade nickel-chrome elements.
  • Automatic and manual-reset high temperature cut-outs prevent overheating.
  • Magnetic back-up safety contactor.
  • Magnetic quiet relays provide silent switching and long service life.
  • Magnetic quiet fan relay.
  • 24VAC control transformer.
  • Circuit breakers.
  • One-size-frame-fits-all plenums up to 20 KW and units are baffled for A/C installation.
  • Three phase units available - Call for pricing

PDF Documents:
Brochure | Installation Manual | Parts Reference Guide

Free Freight* on all Thermolec Plenum Heaters in lower 48

BlueRidge Company only processes warranty returns on products originally purchased from us.

↓   Standard Plenum Heater   ↓

10 KW@240V Vertical Plenum Heater

Part No: T-10U STD

$1278.90 each

15 KW@240V Vertical Plenum Heater

Part No: T-15U STD

$1427.10 each

20 KW@240V Vertical Plenum Heater

Part No: T-20U STD

$1520.47 each

25 KW@240V Vertical Plenum Heater

Part No: T-25U STD

$1893.42 each

30 KW@240V Vertical Plenum Heater

Part No: T-30U STD

$2153.62 each
↓   Modulating Plenum Heater   ↓

10 KW@240V Vertical Plenum Heater

Part No: T-10U MOD HPX

$1659.53 each

15 KW@240V Vertical Plenum Heater

Part No: T-15U MOD HPX

$1928.51 each

20 KW@240V Vertical Plenum Heater

Part No: T-20U MOD HPX

$1845.43 each

25 KW@240V Vertical Plenum Heater

Part No: T-25U MOD HPX

$2371.95 each

30 KW@240V Vertical Plenum Heater

Part No: T-30U MOD HPX

$2824.61 each
↓   Replacement Parts List   ↓

Relay Board for Modulating Plenum Heater (i6-2 four HPX PH)

Part No: 10-02-032

$176.58 each
↓  Thermolec Parts & Accessories   ↓

60 Amp breaker (3-phase)

Part No: CDS-180

$152.73 each

D35 SCR Controller
Thermolec_D35.pdf

Part No: 07-02-012

$350.00 each

Transformer, 480V -24V (50va)

Part No: 17-02-001

$78.00 each

D22-P SCR Controller
Thermolec_D21-P.pdf

Part No: 07-02-106

$296.73 each

D21-P SCR Controller
Thermolec_D21-P.pdf

Part No: 07-02-107

$297.92 each

D46 Hybrid sequential step controller
Thermolec_D46.pdf

Part No: 07-02-108

$806.74 each

D21-PS SCR Controller

Part No: 07-02-109

$297.91 each

Replaces Part #10-02-011, TH400 Std PH Board Kit

Part No: 10-00-008

$342.33 each

TH-600 HPX Mod HPX Control Board

Part No: 10-01-019

$296.83 each

Back-up Contactor to Manual Cut-out 50 amp (spade style)(FFB, TMB, CCT050 or CBLR042)

Part No: 10-02-005

$112.27 each

Back-up Contactor to Manual Cut-out (CCT070, 3 Pole 70AMP 600V)

Part No: 10-02-0055

$213.91 each

Oper. Contactor/Pump Relay/HTR Relay (CCT-140, 25 AMP 240V)
Element Activation Relay for select FFB models

Part No: 10-02-006

$78.00 each

Fan Relay/HPX Heat Pump Lock-out Relay, 240V, 5 pole (CCT-010)

Part No: 10-02-0105

$97.50 each

Heating Element T-15U (1B22, 3750W 240V)

Part No: 10-02-015

$79.66 each

BIR, HIR, OPR Isolation Relays 24V (CCT-144)

Part No: 10-02-017

$91.00 each

Plenum Temp Sensor, Modulating Plenum Heater

Part No: 10-02-019

$130.00 each

CCT-146 OPR & ST2 Isolation Relay - MOD PH, b/f SN#192091

Part No: 10-02-026

$112.27 each

Standard Plenum Heater Relay Board

Part No: 10-02-031

$168.02 each

10-02-032 I 6-2 relay circuit board

Part No: 10-02-032

$176.58 each

TMB TH22 Controller Field Replacement Kit includes a TH22 board, 50 AMP SSR and other miscellaneous components required for field replacement.Must be installed by an electric contractor.

Part No: 16-04-250

$478.83 each

TH22 Control Board Replacement

Part No: 16-04-300

$351.00 each

TH-600D Control Board for FFB Models & Mod Plenum Heaters

Part No: 17-00-100

$342.33 each

3kw Heating Element

Part No: 17-02-101

$139.46 each

5kw Heating Element

Part No: 17-02-102

$255.67 each

5.75kw Heating Element (CBLR-060)

Part No: 17-02-103

$153.40 each

Temperature/Pressure Gauge

Part No: 17-02-104

$88.64 each

Pressure Relief Valve - 30 psi, 3/4"

Part No: 17-02-105

$109.91 each

Circuit Breaker 30 amp

Part No: 17-02-111

$101.64 each

Circuit Breaker 20 amp

Part No: 17-02-1115

$101.64 each

Circuit Breaker 40 amp

Part No: 17-02-112

$101.64 each

Circuit Breaker 50 amp

Part No: 17-02-113

$118.94 each

Circuit Breaker 60 amp

Part No: 17-02-114

$101.64 each

Solid State Relay 50 amp

Part No: 17-02-115

$161.91 each

Control Transformer 30VA 240/24V

Part No: 17-02-116

$81.55 each

Control Fuse 2 amp

Part No: 17-02-117

$26.00 each

TH-600D / FFB / Dual Temp Board
For DHW Indirect Applications

Part No: 17-02-118

$381.33 each

Outdoor Sensor (S-15)

Part No: 17-02-119

$104.00 each

Solid State Relay 100 amp

Part No: 17-02-11590

$204.45 each

Boiler Element Hardware Kit

Part No: 17-02-126

$30.47 each

Tank Temperature Sensor Kit (CBLR-131)

Part No: 17-02-150

$116.32 each

Manual Hi Limit 200F

Part No: 17-02-155

$65.37 each

TH600M Control Board

Part No: 17-02-140

$373.99 each

8.75kw Heating Element (CBLR058)

Part No: 17-02-160

$254.09 each

10kw Heating Element (CBLR059)

Part No: 17-02-161

$254.09 each

Stainless Steel Tank Gasket (current style)

Part No: 17-02-162

$63.45 each

Control Transformer 50VA 240/24V

Part No: 17-02-163

$93.36 each

BL Element - 11.6 Kw 480V/3 phase

Part No: 17-02-169

$159.25 each

2 element SS tank top

Part No: 18-05-010

$84.18 each

4 Elements Stainless Steel Cover for boiler tanks

Part No: 18-05-012

$84.18 each

FF Top Insulation Pad - 4 Elements

Part No: 18-05-0159

$13.00 each

Automatic Reset Cut-Out (CCO010)

Part No: 10-02-003

$77.19 each

PH Manual Hi Limit (CCO030)

Part No: 10-02-999

$77.19 each

Acu-Steam Water Line Filter

Part No: 08-02-001

$65.00 each

Acu-Steam Maintenance Kit

Part No: 08-01-025

$174.38 each

Acu-Steam Bottom Tank with Gasket

Part No: 08-01-019

$202.58 each

Acu-Steam Supply Water Electronic Solenoid Valve

Part No: 08-01-016

$71.50 each

Acu-Steam Element 1.5 Kw

Part No: 08-01-006

$124.09 each

Thermolec Heating Element

Part No: 1R28

$195.00 each

Manual Reset Cut-out

Part No: 08-01-015

$71.50 each

CTH-291, 0-10 VDC Thermostat

Part No: 07-02-130

$255.77 each

Site Links

Contact

Toll Free: (866) 361-4782

Fax: 206-274-1501

17420 Vashon Hwy SW
PO Box 2104
Vashon, WA 98070

Copyright © 2025 BlueRidgeCompany.com All rights reserved.