Location: 78th Ave NW, Stanwood, WA 98292
Call Date: June 24, 2026
First Visit: July 1, 2026
Work Start: July 3, 2026
Project Completion: July 3, 2026
Service Type: 2-zone ductless mini-split installation
Lead Technician: Eli, 10+ years of HVAC experience, Mitsubishi and Trane certified, EPA 608 certified
System Before: Wall heaters with no cooling system
System After: Mitsubishi 2-zone ductless heat pump serving the master bedroom and living room
Final Project Cost: $13,962 after a $750 summer rebate
2-Zone Ductless Mini-Split Installation in Stanwood, WA: Adding Cooling to a Home With Wall Heaters
Ray was not trying to replace a broken AC because the house had never had one. Heating came from electric wall heaters, which could keep the rooms warm in winter but gave him nothing once summer temperatures climbed. By the time he reached out, the goal was pretty simple in his own words: “Summers are getting hot and I’d like to be cool this summer.” He wanted cooling where the family would actually feel it most, without turning a 1,880-square-foot house into a major ductwork project just to add air conditioning.
Ray found Product Air through Facebook and had already spoken with a couple of local HVAC companies before Eli came out on July 1.
The House in Stanwood
Ray’s home is a 1,880-square-foot single-family house built in 1994. It has two stories and four bedrooms. The existing heating setup consisted of wall heaters. There was no cooling system in the home. That gave us a different starting point from a normal AC replacement. We were not trying to repair old cooling equipment or fit a replacement condenser into an existing central system. Ray was adding cooling where he actually wanted it for the first time.
What Ray Wanted Before We Talked Equipment
Eli listened first. Ray had already given us several useful boundaries for the project. He wanted the master bedroom and living room cooled. He wanted equipment with solid warranty coverage. He also had a budget in mind of about $16,000.
Eli summarized it for him this way:
“I heard you need cooling for the master and the living room. Those are the most important. I heard that you want to budget this project around $16,000. Also you want a product with solid warranties.”
Eli already had the two things that mattered most before talking model numbers: where Ray wanted cooling and what he was comfortable spending.
The Mitsubishi System We Installed
Product Air installed a Mitsubishi multi-zone ductless heat pump system. The outdoor equipment is a Mitsubishi MXZ3D24NL, a 2-ton, 24,000 BTU variable-speed heat pump designed to support multiple indoor zones. Ray’s project uses two indoor wall-mounted units:
| Location | Indoor Unit | Capacity |
| Master bedroom | Mitsubishi MSZGX06NL | 6,000 BTU |
| Living room | Mitsubishi MSZGX12NL | 12,000 BTU |
The master bedroom now has its own heating and cooling zone. So does the living room. Those were the two rooms he told us mattered most, and those were the rooms the system was designed to serve.
Why Use a 3-Zone Outdoor Unit for Two Indoor Units?
Ray’s Mitsubishi MXZ3D24NL is built as a multi-zone outdoor unit, but this installation only uses two indoor heads: a 6,000 BTU unit in the master bedroom and a 12,000 BTU unit in the living room. Using a three-zone condenser does not mean there is a free third zone waiting to be plugged in later. Multi-zone sizing is not as simple as adding the nameplate BTUs on the indoor units and subtracting that number from the outdoor unit’s nominal capacity.
A future third zone would still need its own load calculation and would have to fit within Mitsubishi’s approved indoor-unit combinations for that outdoor model. We would also need to look at how the outdoor unit’s available capacity would be shared when several zones call at the same time, along with line-set routing and a practical location for the new indoor unit. Ray bought a two-zone system because those were the two rooms he cared about most, and that is exactly what we designed around. The fact that the outdoor unit can support additional configurations gives us something to evaluate later, not something I would promise him today without running the numbers first.
What Product Air Did
Product Air completed Ray’s ductless installation on July 3 in a single day. Two HVAC technicians installed the Mitsubishi outdoor heat pump and the two wall-mounted indoor units serving the master bedroom and living room. Each indoor head became its own comfort zone, so Ray can set the bedroom differently from the living room instead of heating or cooling both spaces to the same temperature every time one of them needs comfort.
The project also needed a real electrical installation, not just refrigerant lines between the indoor and outdoor equipment. Two Product Air electricians spent about four hours on that side of the job. A ductless heat pump still needs an electrical supply sized for the equipment it serves, along with the proper circuit protection and a safe way to disconnect power for service.
By the end of the day, Ray had independent heating and cooling in the two rooms he had actually prioritized. We did not turn a request for comfort in the master bedroom and living room into a whole-house project he had never asked for. The system solved those two spaces, stayed within the scope Ray chose, and left the rest of the house alone.
How Much Did This 2-Zone Mini-Split Cost?
Ray’s project started at $14,712 before rebates. The Mitsubishi equipment qualified for a $750 summer rebate, bringing his final cost to $13,962.
Warranty Coverage on Ray’s Mitsubishi System
The system qualified for Mitsubishi’s 12-year manufacturer parts and compressor warranty under the applicable registration and installer requirements. Product Air provided a 5-year labor warranty, and our installation is also backed by a lifetime craftsmanship guarantee. Warranty coverage was one of the things Ray had specifically asked Eli about during the consultation. The final system matched that requirement while still keeping the completed project below the roughly $16,000 budget Ray had discussed.
What Ray Got From the Project
Ray started with electric wall heaters and no cooling at all. By the end of the project, the master bedroom had its own 6,000 BTU Mitsubishi wall-mounted unit, the living room had a 12,000 BTU unit, and both zones were connected to the same Mitsubishi multi-zone inverter heat pump. That gave him independent temperature control in the two spaces he cared about most without adding ductwork through the rest of the house.
Product Air completed the HVAC and electrical work in one day. The project came to $14,712 before incentives, and a $750 summer rebate brought Ray’s final price to $13,962, comfortably below the roughly $16,000 budget he had discussed with Eli.
Ray’s house has four bedrooms, but the project was never supposed to become whole-home cooling just because more zones were technically possible. He told Eli the master bedroom and living room were the priorities, so that is where the money went. That is the Tech Brother part for me: solve the rooms the homeowner actually cares about first, then only expand the system if there is a real reason to.
Tech Brother Tip: Cool the Rooms You Actually Use
You don’t need a mini-split in every room just because the house has four bedrooms. Start with the spaces where comfort matters most and expand later only if you actually need to.
Frequently Asked Questions: Ductless Mini-Split Installation in Stanwood, WA
Can I add air conditioning to a house that only has wall heaters?
Yes. A ductless heat pump can add cooling without requiring an existing central AC system. Ray’s home had wall heaters and no documented cooling system before Product Air installed the Mitsubishi equipment.
Do I need a mini-split in every room?
Not necessarily. The system should be designed around the areas you actually want conditioned and the heating and cooling loads of those spaces. Ray specifically prioritized the master bedroom and living room, so his project was designed as a two-zone installation.
Can one outdoor mini-split unit run more than one indoor unit?
Yes. Multi-zone heat pumps are designed to connect multiple compatible indoor units to one outdoor unit. Ray’s Mitsubishi MXZ3D24NL serves two indoor wall units, one in the master bedroom and one in the living room.
Why is Ray’s outdoor unit called a 3-zone system if only two rooms have indoor units?
The outdoor model is designed for multi-zone applications and can support up to three compatible indoor zones. Ray’s current project uses two. Adding another zone in the future would still require an HVAC professional to confirm capacity, compatibility, and the load of the additional space.
Can a ductless mini-split provide heat as well as AC?
Yes. Ray’s Mitsubishi system is a heat pump, so the indoor units can provide heating as well as cooling in the zones they serve.
How long did Ray’s ductless installation take?
Product Air completed the project in one day on July 3, 2026. Two HVAC technicians handled the HVAC installation, while two electricians spent approximately four hours on the electrical portion.
How much did Ray’s two-zone Mitsubishi system cost?
The project price was $14,712 before rebates. A $750 summer rebate reduced Ray’s final cost to $13,962.
What warranty came with the system?
Ray’s project documentation lists a 12-year manufacturer warranty, 5-year labor warranty, and Product Air’s lifetime craftsmanship guarantee.
Key Takeaways
- A ductless heat pump can add air conditioning to a home that has no central cooling system and no existing ductwork for AC
- A multi-zone mini-split does not need an indoor unit in every room if the homeowner only wants to condition specific spaces
- Each indoor head can operate as its own comfort zone, which lets different rooms run at different temperatures
- One multi-zone outdoor heat pump can serve several compatible indoor units without requiring a separate condenser for every room
- A three-zone outdoor unit does not guarantee that a third zone can be added later without checking capacity and equipment compatibility first
- Ductless heat pumps provide heating as well as cooling, so they can supplement existing electric wall heaters in the rooms they serve
— Sergey Nikolin, Co-Founder, Product Air Heating, Cooling and Electric
Marysville · Issaquah · Seattle · Western Washington