Mitsubishi SUZ-AK48NL heat pump installation in Cupertino
Completed April 14, 2026
Replaced a 19-year-old gas furnace and 5-ton AC system with a Mitsubishi SUZ-AK48NL heat pump and SVZ-AP48NL air handler. Installation included a new refrigerant line set, MHK2 thermostat, kumo cloud connectivity, and extended 12-year labor coverage alongside the manufacturer’s 12-year parts warrant
Galaxy Heating & Air Conditioning replaced the existing gas furnace and air conditioning system at this Cupertino home with an all-electric Mitsubishi ducted heat pump system. The homeowner’s previous equipment was approximately 19 years old, with a 5-ton air conditioner.
The new installation consists of a Mitsubishi SUZ-AK48NL outdoor heat pump paired with an SVZ-AP48NL indoor air handler. The heat pump provides both heating and cooling, replacing the gas furnace’s role in heating the home.
The project included a new refrigerant line set, an MHK2 thermostat for local temperature control, and kumo cloud connectivity for remote system access.
The homeowner had completed an extensive engineering and discovery phase before selecting the new equipment. Their goal was to move to an all-electric system with advanced controls and long-term warranty coverage. In addition to the manufacturer’s 12-year parts warranty, the project included an extended 12-year labor warranty, subject to the applicable warranty terms.
Project details
Customer problem
The homeowner wanted to replace a 19-year-old gas furnace and air conditioning system and transition to all-electric heating and cooling. Having already completed a rigorous engineering and discovery phase, they were seeking a premium replacement system with modern controls and long-term warranty protection.
Previous system
An approximately 19-year-old central heating and cooling system consisting of a gas furnace and a 5-ton air conditioner.
Recommendation and why
The selected solution was a Mitsubishi SUZ-AK48NL heat pump paired with an SVZ-AP48NL air handler to meet the homeowner’s goal of all-electric heating and cooling in a ducted configuration.
The installation included a new refrigerant line set, MHK2 thermostat, and kumo cloud connectivity to provide both local and remote control. Extended 12-year labor coverage complemented the manufacturer’s 12-year parts warranty, addressing the homeowner’s interest in long-term protection for the new system.
Equipment details
Mitsubishi 48,000 BTU SUZ-AK48NL Heat pump - SUZ-AK48NL
Mitsubishi 48,000 BTU SVZ-AP48NL Air Handler - SVZ‑AP48NL
I recently hired Galaxy to replace our aging gas furnace and AC with a new 4-ton Mitsubishi heat pump system, and the entire experience was fantastic from start to finish.
During the estimate phase, Constantine was a breath of fresh air. Instead of pushing generic upsells, he actually "downsold" us by engineering exactly what we needed to work seamlessly with our home's downflow ducting. He was honest, straightforward, and clearly explained the system without any high-pressure sales tactics.
For the installation, Mike and Diego were our crew. They arrived a little past the initial 9am window on the first day, but they worked incredibly hard and got the entire complex job done right on schedule. At the start of Day 1, I handed them a simple "homeowner's QA" list of things I wanted to check with them at the end. They were super nice, listened, and gladly accommodated every single request.
The workmanship is top-notch. They perfectly sealed the exterior wall where the lineset exits, helped me get the Kumo Cloud Wi-Fi connected to my phone, and hauled away all the old debris, leaving the site spotless. As a testament to their technical skill, when I asked about the refrigerant line vacuum test, they had pulled it down to 350 microns—which is a great number and proves they don't cut corners!
Pics attached of the final setup. If you want an HVAC company that is honest in the office and expert in the field, we highly recommend the Galaxy team!