Introduction: Why Upgrades Matter
If you’ve already installed the Goodman 3 Ton 14.5 SEER2 System with the GLXS4BA3610 condenser and the AMST36CU1300 air handler, you’ve made a solid investment. It’s a high-performing, R-32 powered unit built for efficiency and reliability.
But here’s the thing: HVAC systems are no longer just about heating and cooling. Homeowners today want comfort that’s smart, adaptable, and energy-saving. That’s where accessory and control upgrades come into play.
Let me walk you through the best upgrades I recommend for this setup—based on real-world installs and what actually delivers value.
1. Smart Thermostats: Control That Pays You Back
If you’re still using a basic programmable thermostat, you’re missing out. A smart thermostat is one of the easiest and most cost-effective upgrades you can make.
Best Pairings:
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ecobee Smart Thermostat Premium: Works seamlessly with single-stage systems like the GLXS4BA3610. Plus, it includes built-in sensors and voice control.
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Google Nest Thermostat: Known for its learning algorithm and clean design. It works well with the AMST36CU1300 when wired properly.
Benefits:
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Remote control via phone or voice assistant
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Learning schedules and adaptive comfort
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Energy usage reports
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Up to 10% energy savings, according to the EPA’s ENERGY STAR program.
Pro Tip: Make sure your wiring supports a common (C) wire. If not, you may need an adapter or a thermostat model that doesn’t require one.
2. Surge Protectors: Cheap Insurance for Pricey Equipment
We don’t talk about this enough: voltage spikes are HVAC killers. One lightning strike or a sudden utility surge can fry your control board or compressor.
For a few bucks, adding an HVAC surge protector—like the Intermatic AG3000—can protect your entire system.
Key Specs:
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Protects both condenser and air handler
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LED status indicators
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Easy install at the disconnect or panel
Learn more from HVAC School’s deep dive on surge protection.
3. Float Switches & Drain Pan Sensors: Prevent Overflow Disasters
The AMST36CU1300 air handler has a drain pan, but without a float switch or wet switch, you’re playing roulette with water damage—especially in attic installs.
Recommended Upgrades:
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Rectorseal Safe-T-Switch SS1 or SS2: Interrupts power to the unit when the drain backs up
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Rectorseal AquaGuard AG-1100E: Offers an audible alert and connects directly to your control board
These switches are a no-brainer if your unit is installed above a ceiling or living space. I’ve seen ceilings collapse from just one backed-up condensate line. Don’t let it be you.
4. Advanced Air Filtration: Protect Your Lungs & System
The default 1” filter in most setups isn’t cutting it anymore—not with today’s pollen levels and airborne particulates.
Filter Upgrade Options:
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MERV 11–13 Media Filters: Better at catching fine dust, pet dander, and smoke
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Aprilaire 1210 or 1610 Filter Cabinets: Add-on cabinets that boost surface area and lifespan
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UV Air Purifiers (like the RGF REME HALO): Neutralize mold spores and pathogens inside the ductwork
According to the EPA Indoor Air Quality Guide, improved filtration can significantly reduce respiratory issues and allergens.
Reminder: Higher MERV ratings = more resistance. Make sure your blower motor can handle it (the AMST36CU1300 can, in most cases).
5. Hard Start Kits: Longer Life for Your Compressor
The GLXS4BA3610 is a reliable condenser, but every compressor appreciates an assist—especially during high-demand summer starts.
Why Use a Hard Start Kit?
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Reduces strain on startup
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Prevents voltage drops
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Extends compressor life
A go-to option is the SUPCO SPP6, a universally compatible hard start capacitor kit. It installs easily in most residential condensing units and is often recommended for systems operating in high-heat regions.
Learn more from this breakdown on why HVAC compressors fail.
6. Zoning & Dampers (Advanced Option)
If you’ve got a two-story home or inconsistent room temps, adding zoning controls with motorized dampers is the gold standard.
How It Works:
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Each “zone” gets its own thermostat
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Dampers open/close in ductwork based on demand
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Your system distributes air only where needed
While this upgrade requires more involved ductwork, it’s worth exploring during major remodels or if you're already redoing the ducts. For a deeper understanding, see this Energy Vanguard article on duct design and zoning.
Final Thoughts: Upgrade with Purpose
Upgrading your Goodman GLXS4BA3610 + AMST36CU1300 system isn’t just about adding bells and whistles—it’s about customizing your comfort, protecting your investment, and saving money over time.
If you're looking for a dependable, energy-efficient foundation, you've already got that with this 3 Ton 14.5 SEER2 R-32 System.
But with the right thermostat, surge protection, safety switches, filtration, and control upgrades, you can transform that solid system into a smart, future-ready comfort machine.
Curious about refrigerant? Visit my guide: Ensuring Proper Refrigerant Charge with the GLXS4BA3610.
Need help choosing or installing these upgrades? Talk to your HVAC pro or drop a question in the comments. As always—buy smart, install right, and stay cool.
Until next time,
Tony the Trusted Tech
