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Functional Devices (10)
Furnas Controls (8)
General Aire (1)
Hartland Controls (4)
Honeywell (36)
Johnson Controls (7)
MARS (16)
Packard (35)
Robertshaw (4)
Square D (14)
Tekmar (4)
Trane (1)
White Rodgers (15)

Voltage (Primary)

115v (1)
120v (86)
208v (65)
220v (3)
230v (5)
240/480V (4)
240v (70)
277v (5)
440v (3)
460v (5)
480v (23)
575v (1)

Voltage (Secondary)

24v (70)
26.5 V.O.C. (13)
27 V.O.C. (7)
27.5 V.O.C. (9)
110v (3)
240v (3)

VA Rating

19 (1)
20 (5)
40 (56)
48 (7)
50 (25)
75 (20)
92 (1)
150 (4)
100 (10)
200 (2)
96 (1)

Mount

Clamp (10)
Foot (92)
Hub (14)
Junction Box (1)
Multi (16)
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Plate (30)
Wall (1)

Price Range

$5 to $10 (12)
$10 to $15 (26)
$15 to $20 (16)
$20 to $25 (15)
$25 to $30 (22)
$30 to $35 (9)
$35 to $40 (5)
$40 to $45 (5)
$45 to $50 (4)
$50 to $60 (8)
$60 to $70 (3)
$70 to $80 (6)
$80 to $90 (9)
$90 to $100 (1)
$100 to $200 (9)
$200 to $300 (3)
$400 to $500 (1)
$1000 to $1500 (1)

Product Type

Capacitor (4)
Oil Filter (1)
Thermostat (1)
Transformer (149)

Review Score

(42)
(3)
(2)
(1)

Transformers

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Transformers

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Lead Content Warning

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.

Lead Content Warning

This product does not comply with the Safe Drinking Water Act, which requires that products used in any system providing water for human consumption (drinking or cooking) to meet low-lead standards. Please check the box below to confirm you are aware that this item is for non-potable water applications only.

This product will NOT be used in the installation or repair of a potable water (human consumption) application.

You must agree to this statement in order to purchase this product.

Cancel Continue

This Item is Non-Returnable

When you order this item, we then special order it for you from the manufacturer. Therefore, our standard return policy does not apply to this item. Manufacturer's warranty still applies.

I understand that once I order this item I cannot cancel or return it.

You must agree to this statement in order to purchase this product.

Cancel Continue

Certification Necessary

FlashShield is to be installed only by a licensed plumber/HVAC installer that has successfully completed the Gastite/FlashShield certification test.

By checking this box I am acknowledging that I have successfully completed the Gastite/FlashShield certification and I hold a valid Gastite/FlashShield certification card.

You must agree to this statement in order to purchase this product.

Cancel Continue

Warning

This product must be installed by a qualified/licensed contractor and set up with properly calibrated combustion test equipment. Failure to comply with this could result in substantial property damage, severe personal injury or death.

By checking this box I am verifying that this product will be installed by a qualified/licensed contractor and will be set up with properly calibrated combustion test equipment.

You must agree to this statement in order to purchase this product.

Cancel Continue

Compare

120/208/240V (Primary) 24V (Secondary), 40 VA Transformer, Foot-Mount

SKU: 90-T40F3

Brand: White Rodgers

(23)

$9.35 each

$89.50 box of 10

$8.95 each

393

Thu, Jun 27

393

Qty Arrives

393 Thu, Jun 27

Questions? Call 1-888-757-4774
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120 VAC (Primary) 27V (Secondary) 40 VA Transformer

SKU: AT140A1000

Brand: Honeywell

(12)

$12.49 each

$47.56 box of 4

$11.89 each

603

Thu, Jun 27

603

Qty Arrives

603 Thu, Jun 27

Questions? Call 1-888-757-4774
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Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer

SKU: PF4031OEM

Brand: Packard

$9.25 each

99

Thu, Jun 27

99

Qty Arrives

99 Thu, Jun 27

Questions? Call 1-888-757-4774
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Plate Mount Transformer (120 VAC To 24 VAC)

SKU: S84A-410

Brand: White Rodgers

(3)

$15.85 each

$152.50 box of 10

$15.25 each

73

Thu, Jun 27

73

Qty Arrives

73 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, 40VA, 60 Hz 120V Primary, 24V (Secondary), Foot Mount

SKU: 90-T40F1

Brand: White Rodgers

(14)

$10.95 each

$105.50 box of 10

$10.55 each

143

Thu, Jun 27

143

Qty Arrives

143 Thu, Jun 27

Questions? Call 1-888-757-4774
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Multi Mount 120V (Primary) 24V (Secondary) 40VA Transformer

SKU: PM12440

Brand: Packard

(1)

$11.95 each

37

Thu, Jun 27

37

Qty Arrives

37 Thu, Jun 27

Questions? Call 1-888-757-4774
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Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer

SKU: PF42440

Brand: Packard

(2)

$9.95 each

55

Thu, Jun 27

55

Qty Arrives

55 Thu, Jun 27

Questions? Call 1-888-757-4774
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Foot Mount 120/208/240/480V 75VA Transformer

SKU: PF52475

Brand: Packard

(3)

$28.75 each

46

Thu, Jun 27

46

Qty Arrives

46 Thu, Jun 27

Questions? Call 1-888-757-4774
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120/208/240 VAC (Primary) 27V (Secondary) 40 VA Transformer

SKU: AT140A1018

Brand: Honeywell

(3)

$13.79 each

$52.76 box of 4

$13.19 each

301

Thu, Jun 27

301

Qty Arrives

301 Thu, Jun 27

Questions? Call 1-888-757-4774
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Foot Mount 120/208/240V (Primary) 24V (Secondary) 20VA Transformer

SKU: PF42420

Brand: Packard

(1)

$8.55 each

132

Thu, Jun 27

132

Qty Arrives

132 Thu, Jun 27

Questions? Call 1-888-757-4774
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Multi Mount 120/208-240V (Primary) 24V (Secondary) 50VA Transformer

SKU: PM44450

Brand: Packard

(2)

$16.55 each

39

Thu, Jun 27

39

Qty Arrives

39 Thu, Jun 27

Questions? Call 1-888-757-4774
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Plate or Panel Mounted 120/208/240 Vac Transformer w/ 9" Lead Wires & Metal End Bells

SKU: AT150F1022

Brand: Honeywell

(2)

$29.29 each

$139.95 box of 5

$27.99 each

144

Thu, Jun 27

144

Qty Arrives

144 Thu, Jun 27

Questions? Call 1-888-757-4774
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120 VAC (Primary) 26.5V (Secondary) 40 VA Transformer

SKU: AT72D1683

Brand: Honeywell

(7)

$24.19 each

$91.96 box of 4

$22.99 each

246

Thu, Jun 27

246

Qty Arrives

246 Thu, Jun 27

Questions? Call 1-888-757-4774
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Gas Ignition Transformer (120 VAC, 50/60 Hz)

SKU: Q624A1014

Brand: Honeywell

(1)

$137.99 each

$395.97 box of 3

$131.99 each

212

Thu, Jun 27

212

Qty Arrives

212 Thu, Jun 27

Questions? Call 1-888-757-4774
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Gas Ignition Transformer (120 VAC, 60 Hz)

SKU: Q652B1006

Brand: Honeywell

(2)

$72.99 each

$349.95 box of 5

$69.99 each

Fri, Sep 6 – Fri, Oct 4

Arrives

Fri, Sep 6 – Fri, Oct 4

Questions? Call 1-888-757-4774 or Chat Us
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Multi Mount 120/208/240/480V (Pri.) 24V (Sec.) 75VA Transformer

SKU: PM7541MCB

Brand: Packard

(2)

$26.75 each

34

Thu, Jun 27

34

Qty Arrives

34 Thu, Jun 27

Questions? Call 1-888-757-4774
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120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer

SKU: AT175A1008

Brand: Honeywell

(6)

$34.69 each

$131.96 box of 4

$32.99 each

335

Thu, Jun 27

335

Qty Arrives

335 Thu, Jun 27

Questions? Call 1-888-757-4774
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Class II Foot Mount 208/240V Input & 24V Output, 40VA Transformer

SKU: PF40224

Brand: Packard

$9.65 each

6

Thu, Jun 27

6

Qty Arrives

6 Thu, Jun 27

Questions? Call 1-888-757-4774
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120 VAC (Primary) 26.5V (Secondary) 40 VA Transformer

SKU: AT72D1006

Brand: Honeywell

(8)

$25.69 each

$122.45 box of 5

$24.49 each

99

Thu, Jun 27

99

Qty Arrives

99 Thu, Jun 27

Questions? Call 1-888-757-4774
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120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer

SKU: AT175F1023

Brand: Honeywell

(4)

$36.59 each

$174.45 box of 5

$34.89 each

131

Thu, Jun 27

131

Qty Arrives

131 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, Foot & Single Threaded Hub Mount, 50VA, 120 to 24 Vac

SKU: TR50VA001

Brand: Functional Devices

(1)

$12.95 each

39

Thu, Jun 27

39

Qty Arrives

39 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer w/ Circuit Breaker,Single Hub, Foot Mount, 100VA, 120-24 Vac

SKU: TR100VA001

Brand: Functional Devices

$24.95 each

34

Thu, Jun 27

34

Qty Arrives

34 Thu, Jun 27

Questions? Call 1-888-757-4774
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Universal Mount Transformer

SKU: AT140A1042

Brand: Honeywell

(9)

$26.49 each

$126.45 box of 5

$25.29 each

56

Thu, Jun 27

56

Qty Arrives

56 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, Single Hub, Foot Mount, 75VA 480/240/208/120-24 Vac

SKU: TR75VA005

Brand: Functional Devices

$24.95 each

33

Thu, Jun 27

33

Qty Arrives

33 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, Single Hub, Foot Mount, 75VA, 120 to 24 Vac

SKU: TR75VA001

Brand: Functional Devices

$22.25 each

34

Thu, Jun 27

34

Qty Arrives

34 Thu, Jun 27

Questions? Call 1-888-757-4774
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Plug-In Transformer 120/24V, 20VA

SKU: 620-202

Brand: Robertshaw

$22.55 each

$107.75 box of 5

$21.55 each

43

Thu, Jun 27

43

Qty Arrives

43 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, 40VA, 60 Hz 120V Primary, 24V (Secondary), Multi-Mount

SKU: 90-T40M1

Brand: White Rodgers

(4)

$12.95 each

$124.50 box of 10

$12.45 each

64

Thu, Jun 27

64

Qty Arrives

64 Thu, Jun 27

Questions? Call 1-888-757-4774
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Transformer, Dual Hub, Foot Mount, 50VA, 480/277/240/120-24 Vac

SKU: TR50VA004

Brand: Functional Devices

$20.95 each

10

Thu, Jun 27

10

Qty Arrives

10 Thu, Jun 27

Questions? Call 1-888-757-4774
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120/208/240V (Primary) 24V (Secondary), 40 VA Transformer, Multi-Mount

SKU: 90-T40M3

Brand: White Rodgers

(2)

$11.79 each

$170.25 box of 15

$11.35 each

101

Thu, Jun 27

101

Qty Arrives

101 Thu, Jun 27

Questions? Call 1-888-757-4774

Qty	Arrives
393	Thu, Jun 27

Qty	Arrives
603	Thu, Jun 27

Qty	Arrives
99	Thu, Jun 27

Qty	Arrives
73	Thu, Jun 27

Qty	Arrives
143	Thu, Jun 27

Qty	Arrives
37	Thu, Jun 27

Qty	Arrives
55	Thu, Jun 27

Qty	Arrives
46	Thu, Jun 27

Qty	Arrives
301	Thu, Jun 27

Qty	Arrives
132	Thu, Jun 27

Qty	Arrives
39	Thu, Jun 27

Qty	Arrives
144	Thu, Jun 27

Qty	Arrives
246	Thu, Jun 27

Qty	Arrives
212	Thu, Jun 27

Arrives
Fri, Sep 6 – Fri, Oct 4

Qty	Arrives
34	Thu, Jun 27

Qty	Arrives
335	Thu, Jun 27

Qty	Arrives
6	Thu, Jun 27

Qty	Arrives
99	Thu, Jun 27

Qty	Arrives
131	Thu, Jun 27

Qty	Arrives
39	Thu, Jun 27

Qty	Arrives
34	Thu, Jun 27

Qty	Arrives
56	Thu, Jun 27

Qty	Arrives
33	Thu, Jun 27

Qty	Arrives
34	Thu, Jun 27

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43	Thu, Jun 27

Qty	Arrives
64	Thu, Jun 27

Qty	Arrives
10	Thu, Jun 27

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101	Thu, Jun 27

Compare

Foot Mount 120/208/240/480V 100VA Transformer

SKU: PF524100

Brand: Packard

$44.95 each

Thu, Jun 27

245

Qty	Arrives
11	Thu, Jun 27
234	Fri, Jun 28 – Mon, Jul 1

Questions? Call 1-888-757-4774

Resources

Articles

More About Transformers

Transformers provide power to electric circuits in heating, cooling and HVAC systems. They can be used in any application that does not exceed the transformer's load ratings. Common applications include thermostats, gas valves, and relays. When selecting the appropriate transformer, primary voltage is the most important consideration. Transformers are available in primary voltages ranging from 24V to 480V. Honeywell and White Rodgers transformers are the industry standard.

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Transformers

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