5 Best HVAC Surge Protectors
Five HVAC surge protectors, including Intermatic AG3000 HVAC Surge Protective and Mars 83905 HVAC Surge Protective, compared for voltage rating, installation and indicator status.
Our top 5 hvac surge protectors
Swipe to compare price, rating and best use →
| Product | Price | Rating | Best for |
|---|---|---|---|
01 Intermatic AG3000 HVAC Surge Protective DeviceDetails ↓ | $73.47 | 4.7/5Amazon | Best overall |
02 Mars 83905 HVAC Surge Protective DeviceDetails ↓ | $97.81 | 4.8/5Amazon | Best for compact installations |
03 DITEK DTK-120/240CM+ Surge ARRESTORDetails ↓ | $51.60 | 4.7/5Amazon | Best for NEMA 4X enclosures |
04 Wells Sinkware Wells 120/240V Universal Surge Protector for HVAC & Heat Pump - 25kADetails ↓ | $38.99 | 4.5/5Amazon | Best for high surge capacity |
05 Zuomeng HVAC Surge ProtectorDetails ↓ | $59.99 | 4.8/5Amazon | Best for dual status indicators |
01 — Intermatic
Best overallIntermatic AG3000 HVAC Surge Protective Device
Intermatic AG3000 HVAC Surge Protective Device is a surge protector with 120/240 VAC rating, LED status indicator. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
View on Amazon ↗02 — MARS
Best for compact installationsMars 83905 HVAC Surge Protective Device
Mars 83905 HVAC Surge Protective Device gives this surge protector HVAC-specific surge protection, hardwired installation. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
View on Amazon ↗03 — Ditek
Best for NEMA 4X enclosuresDITEK DTK-120/240CM+ Surge ARRESTOR
DITEK DTK-120/240CM+ Surge ARRESTOR lists 120/240 VAC rating, NEMA 4X enclosure for this surge protector. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
View on Amazon ↗Reasons to buy
+2 W
04 — Wells Sinkware
Best for high surge capacityWells Sinkware Wells 120/240V Universal Surge Protector for HVAC & Heat Pump - 25kA
Wells Sinkware Wells 120/240V Universal Surge Protector for HVAC & Heat Pump - 25kA is built as a surge protector with 25 kA surge capacity, Type 1 SPD design. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
View on Amazon ↗Reasons to buy
+Waterproof
05 — Zuomeng
Best for dual status indicatorsZuomeng HVAC Surge Protector
Zuomeng HVAC Surge Protector offers 120/240 VAC rating, 20 kA surge absorption in a surge protector format. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
View on Amazon ↗Price information
Amazon price and availability checked Oct 17, 2026, 10:23 PM Lisbon time. Prices and availability are subject to change; the information shown on Amazon.com at purchase applies.
Our process
How we picked.
We compare five relevant products for different needs, using documented specifications, clear use cases and practical trade-offs. Our goal is to make the differences clear and help you choose with confidence.
- 01Relevance
Each product must fit the guide’s intended use, audience and requirements.
- 02Specifications
We compare the key product details that meaningfully affect the buying decision.
- 03Use case and fit
We compare the intended use, configuration and practical fit of every selected product.
- 04Strengths and limitations
We explain where each option performs best and the compromises to consider.
Good questions
FAQ — HVAC Surge Protectors
01What matters most when comparing HVAC surge protectors?+
Compare voltage rating, installation and indicator status. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit.
02What should I check before buying HVAC surge protectors?+
Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
03How do Intermatic AG3000 HVAC Surge Protective and Mars 83905 HVAC Surge Protective Device differ?+
Intermatic AG3000 HVAC Surge Protective Device has 120/240 VAC rating and LED status indicator; Mars 83905 HVAC Surge Protective Device has HVAC-specific surge protection and hardwired installation. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
04Is DITEK DTK-120/240CM+ Surge ARRESTOR a suitable surge protector for this use?+
DITEK DTK-120/240CM+ Surge ARRESTOR identifies 120/240 VAC rating and NEMA 4X enclosure. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit.
05What should I know about Wells Sinkware Wells 120/240V Universal?+
Wells Sinkware Wells 120/240V Universal Surge Protector for HVAC & Heat Pump - 25kA lists 25 kA surge capacity and Type 1 SPD design. Check the manufacturer's installation diagram, voltage range and replacement indicator; use a qualified installer where required.
06Who is Zuomeng HVAC Surge Protector best suited to?+
Zuomeng HVAC Surge Protector lists 120/240 VAC rating and 20 kA surge absorption. An HVAC surge device must match the system voltage and be installed at an appropriate point in the electrical circuit.
The short answer
Start with the Intermatic AG3000 HVAC Surge Protective Device.
It is our first pick for this guide’s exact scope. Choose another option when its stated use case or trade-off better matches yours.
View on Amazon ↗Keep looking
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