3 Ton Goodman R-32 Two-Stage Heat Pump System – GLZT7CA3610 & AMVT42CP1300
For mid-size homes that need a steady 36,000 BTU/h of heating and cooling, the Goodman GLZT7CA3610 heat pump and AMVT42CP1300 variable-speed air handler deliver up to 17.2 SEER2 efficiency on R-32 refrigerant. This 3 ton pairing has the lowest sound rating in Goodman's GLZT7C lineup at 71 dB, and the 21-inch C-cabinet air handler supplies up to 1,200 CFM. It is a strong choice for family homes, ranch-style houses and replacement jobs where homeowners want quieter, more even comfort.
Is a 3 Ton Heat Pump System the Right Size?
At a nominal 36,000 BTU/h for both cooling and heating, a 3 ton heat pump covers a large share of typical single-family homes. Even so, two houses of the same size can need different tonnage. Climate zone, attic insulation, window exposure and duct losses can push the real load up or down. Use the tonnage and BTU calculator to estimate, then confirm with a Manual J calculation.
If you are replacing an older 3 ton system, check that existing ductwork can handle about 1,200 CFM on high stage. Also check how much electric backup heat your winters call for. The two-stage Copeland UltraTech scroll compressor runs on low stage much of the time, which helps keep temperatures steady and humidity under control.
Ideal for: Mid-size single-family homes, ranch and split-level houses, replacement of older 3 ton heat pumps, and homeowners who want quieter outdoor equipment.
Need more capacity? Step up to the 4 Ton Goodman GLZT7CA4810 & AMVT60DP1300 Heat Pump System for larger homes requiring additional heating and cooling capacity.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, climate, duct design, window load, occupancy and desired indoor temperature. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | GLZT7CA3610 — 3 Ton Two-Stage R-32 Heat Pump Condenser |
|---|---|
| Indoor Air Handler | AMVT42CP1300 Multi-Position Variable-Speed Air Handler (21" Cabinet) |
| Application | Residential Ducted Split System Heat Pump — Heating & Cooling |
| Refrigerant | R-32 |
| Compressor | Two-Stage Copeland UltraTech Scroll Compressor |
| Backup Heat | Electric Heat Strip Selected at Checkout (5, 8, 10 or 15 kW) |
| Electrical | 208/230V, Single Phase, 60 Hz Heat Pump |
| Air Handler Electrical | 208/240V, Single Phase |
The GLZT7CA3610 has the shortest cabinet in the series at 35-3/4" tall on a 35-1/2" square footprint. It uses 3/8" liquid and 7/8" suction sweat valves with a 129 oz factory charge. Its partner, the AMVT42CP1300, uses a 3/4 HP variable-speed blower to deliver 804 CFM on low stage and 1,200 CFM on high stage with a 3 ton outdoor unit. Its internal TXV and R-32 sensor come factory-installed. Building a system piece by piece? The GLZT7CA3610 condenser and AMVT42CP1300 air handler are also sold individually.
Heat Pump & Air Handler Features
GLZT7CA3610 Outdoor Heat Pump
- 71 dB sound rating, the lowest in the GLZT7C series
- Two-stage Copeland UltraTech scroll compressor
- Nominal 36,000 BTU/h cooling and heating capacity
- Up to 17.2 SEER2 and 8.2 HSPF2 series efficiency
- ComfortAlert built-in diagnostics with storage of six fault codes
- Goodman GTST connected thermostat compatibility
- 5mm copper tube / enhanced aluminum fin coil
- Time-delay short-cycle protection for quiet, reliable defrost
- Custom Nickel Gray powder-paint finish, 500-hour salt-spray tested
- Factory-installed coil and ambient temperature sensors
AMVT42CP1300 Variable-Speed Air Handler
- 3/4 HP variable-speed ECM blower motor
- 21" wide C cabinet for 3 to 3.5 ton airflow
- Constant CFM over a wide range of static pressures
- Adjustable low CFM for efficient fan-only operation
- Improved humidity and comfort control
- Built-in compatibility with multi-stage heat pump applications
- Internal factory-installed TXV and R-32 refrigerant sensor
- Foil-faced insulation reduces cabinet condensation
- Screw-less sides and back for humid installation locations
- Galvanized, leather grain-embossed cabinet finish
Specifications & Manuals
Reference the GLZT7C spec sheet for 3 ton electrical, dimensional and expanded performance data, and the AMVT sheet for C-cabinet airflow, wiring and heat kit electrical requirements.
Frequently Asked Questions
Is a 3 ton heat pump enough for my home?
It covers about 36,000 BTU/h of heating and cooling load, which suits many mid-size homes. Insulation, windows and climate matter more than square footage, so confirm with a load calculation or our free sizing help.
Why does the 3 ton system use a 3.5 ton AMVT42CP1300 air handler?
Goodman rates the AMVT42CP1300 for 3 and 3.5 ton outdoor units. With the GLZT7CA3610, it provides 804 CFM on low stage and 1,200 CFM on high stage.
What line set size does the GLZT7CA3610 require?
The condenser uses 3/8" liquid and 7/8" suction connections. 25' and 50' copper line sets in 7/8" & 3/8" with insulation are available as options. The AMVT42CP1300 has a 3/4" suction connection, so follow Goodman's installation instructions at the air handler.
Will the GLZT7CA3610 work with the Goodman GTST thermostat?
Yes. Goodman lists GTST connected thermostat compatibility for the GLZT7C series. The Goodman GTST connected thermostat is available separately.
How loud is the 3 ton GLZT7CA3610 heat pump?
Goodman rates it at 71 dB, the lowest in the GLZT7C lineup. A grille-style sound control top and a foam compressor blanket help keep noise down.
What electrical service does the 3 ton system need?
The condenser needs a 20.8 amp minimum circuit ampacity and 35 amp max overcurrent protection. The air handler's circuit depends on the heat strip; a 10 kW kit calls for 49.8/56.5 MCA at 208/240V. Have a licensed electrician confirm the wiring.
GLZT7C Technical SpecificationsGLZT7C Installation_ManualGLZT7C Parts ListAMVT Technical SpecificationsAMVT Installation InstructionsGoodman Seer2 Air Handler Warranty Certificate 
