Intermatic AG3000 120/240 VAC Universal HVAC Surge Protective Device - Comprehensive Surge Protection, TPMOV Technology, Watertight Enclosure - UL Listed and Reliable

Just installed, so I am relying on its reputation/sales/longevity on the market. The unit is solid, compact, and the 10 g tinned copper wires are impressive. Installation- for simple installations by a pro I would look for $150-$200 MAX. My DIY took over an hour, but I am slow and careful. Do your homework FIRST! Note- double tapping (2 wires under 1 screw) is dangerous and not "Code" unless the fitting is approved for that (never seen that yet!). Use the pigtail method on all 3 connections. Also, screw tightness is now a Code issue and specs are on newer disconnect boxes. Up your DIY "game" and consider getting a torque screwdriver. If your original set-up has white wires being used as "Hot" wires, consider using black tape or heat shrink to properly mark them. (See before and after pix-hot wires are in center. White is reserved for neutral, not hot.) WAGOs are great, but be sure to use the larger 20g-10g ones, as the AG3000 has 10 g wire. I used tape to avoid lever movement with some white adhesive tape on the ground wago. The box gets pretty tight, but it CAN be done properly, in a standard disconnect box. Document (and save) everything as soon as you are done, who knows what you might need to make a claim.

The Intermatic AG3000 120/240 VAC Universal HVAC Surge Protective Device offers peace of mind by safeguarding your HVAC system against damaging power surges. As someone who prioritizes the longevity and reliability of home appliances, I find this surge protective device to be an essential investment in protecting valuable HVAC equipment.First and foremost, the effectiveness of the AG3000 in protecting HVAC systems from power surges is exceptional. Designed to handle both common and catastrophic surge events, this device provides comprehensive protection against voltage spikes and transient overvoltages that can cause irreparable damage to sensitive HVAC components. With its robust construction and advanced surge suppression technology, it offers reliable performance and peace of mind, ensuring uninterrupted operation of your HVAC system.Additionally, I appreciate the versatility and compatibility of the AG3000 surge protective device. Designed for use with both residential and commercial HVAC systems operating at 120/240 volts, it offers universal compatibility with a wide range of equipment, including air conditioners, heat pumps, furnaces, and more. The compact and easy-to-install design allows for seamless integration into existing HVAC setups, making it suitable for both new installations and retrofit projects.One of the standout features of the AG3000 surge protective device is its durability and longevity. Constructed from high-quality materials and engineered to withstand harsh environmental conditions, it provides long-lasting protection for your HVAC system year after year. The device is backed by a robust warranty, offering added assurance of its reliability and performance over time.Furthermore, I am impressed by the ease of installation and maintenance offered by the AG3000 surge protective device. The compact design and straightforward wiring configuration make installation quick and hassle-free, requiring minimal time and effort to set up. The LED status indicators provide visual confirmation of proper operation, allowing for easy monitoring and troubleshooting.In terms of value, the AG3000 surge protective device offers an excellent return on investment by helping to extend the lifespan of your HVAC equipment and prevent costly repairs or replacements due to surge-related damage. The affordable price point and long-term benefits make it a smart and practical choice for homeowners and facility managers looking to protect their HVAC investments.Overall, I am highly satisfied with the Intermatic AG3000 120/240 VAC Universal HVAC Surge Protective Device. Its effectiveness, versatility, compatibility, durability, ease of installation, and value make it an indispensable accessory for anyone looking to safeguard their HVAC system against power surges and ensure reliable performance for years to come.

This item arrived when expected and was new in the box. Intermatic has a long history of producing surge protection devices (SPD). This device is made of two 150V clamping devices in a single NEMA 4x box. It's designed to be connected to two hot legs (standard residential split phase) and ground. It is not designed to provide neutral line protection as most residential condenser units don't have a neutral anyway. This is not an EMF or noise filter, just a spike/surge protector.One reason I got this unit is because it is listed with the new standards (3rd edition) and it is listed as a type 1 and type 2 device. It also has 10 Ga. wire rather than the little 14 Ga. wire that others use. The specs are not the highest, but it's hard to directly compare 3rd edition standards with earlier SPD/TVSS ratings. Other comparable devices are the Supco SCM150 and the ICM516 units.My HVAC condenser is not a computerized heat pump but it still has advanced controllers that cost hundreds to replace if they blow up. So it's worth doing something simple to try and help reduce any surges/spikes from damaging my condenser. Intermatic also includes a 3-year $7500 connected equipment warranty (which may be as hard to prove and collect on as others).It was easy to install at the condenser disconnect (it installs in any position in a standard knock out, I picked left side). It comes with a rubber gasket for the lock nut to prevent water from getting in. It has a simple single green LED that tells you there is power and it's "working". It's hard to truly test these units as I'm not in an area that takes a lot of hits. If this unit blows up (or fails in some way) and my HVAC system is still running then I'll say it works and get a replacement, but until there is a problem I'll have to assume it's doing the job...UPDATE: Just short of 2 years the green light went out. This means the unit has failed in some way and is no longer offering full protection. I went to Intermatic's web site, filled out some forms, got an email, FAXed them the information and amazon receipt without talking to a person. I had a new unit for free in about a week. No equipment damage noted.

So far so good we’ve only had one bad storm so far and my AC did not shut off. Let’s hope I don’t have a power surge, but my green light is still flashing.