Ductless Mini-Split Installation in Berkeley & the East Bay
Ductless heating and cooling for homes without ductwork, room additions, and converted spaces. Single-zone and multi-zone systems with no duct modification required. CSLB #1146520.
★★★★★
“Aarvaks was professional, knowledgeable, friendly, and very efficient with both maintenance and install tasks. Will definitely use their services going forward and highly recommend them to others.”
Installation Scope
What’s Included in Every Ductless Mini-Split Installation
Every Aarvaks ductless mini-split installation follows a documented process. Written quote before work begins. No surprises on the invoice.
- Site assessment and zone sizing — measure the space, evaluate mounting location, verify electrical panel capacity for a dedicated circuit
- Written equipment recommendation and itemized quote — no work begins without your written approval
- Indoor unit mounting — wall bracket installation on a load-bearing surface, unit mounting and leveling
- Outdoor unit placement — concrete pad or wall bracket installation, leveling, and manufacturer-specified clearance verification
- Line set installation — refrigerant lines, electrical communication wire, and condensate drain run through a wall penetration from indoor to outdoor unit
- Dedicated 240V electrical circuit installation — from panel to outdoor unit disconnect
- Refrigerant system pressure testing and leak check — before charging and commissioning
- Condensate drain test — verify gravity drain flow or condensate pump operation
- Control system setup — remote control pairing, WiFi app configuration where applicable
- Permit coordination where required — we handle the permit process for Berkeley and East Bay jurisdictions
- Full system commissioning — both cooling and heating modes tested, temperature differential verified
- Written post-installation report — system settings, refrigerant charge record, and warranty registration
What We Install
Carrier, Mitsubishi & Bosch Systems
Aarvaks is a Carrier Authorized Dealer. We also install Mitsubishi and Bosch ductless mini-splits — selected based on your space, line set routing, and efficiency goals.
Carrier Ductless Systems
As a Carrier Authorized Dealer, we install the full Carrier ductless mini-split lineup — single-zone and multi-zone configurations with inverter-driven compressors for precise, quiet operation. Factory-backed warranty applied at installation. Single-zone systems start at $6,500.
Mitsubishi Electric
The market-leading ductless mini-split brand. Mitsubishi’s H2i Hyper-Heating models deliver full heating capacity down to 13°F — far below anything Berkeley experiences. Kumo Cloud WiFi control. Available in wall-mount, ceiling cassette, and floor-mounted configurations for rooms where wall mounting is not possible.
Bosch Climate Series
Inverter-driven variable-speed compressors for precise temperature control and quiet operation. Bosch ductless mini-splits offer strong cold-weather heating performance and high efficiency ratings — well suited for East Bay homes and room additions where consistent low-level output outperforms on/off systems.
Transparent Pricing
Ductless Mini-Split Installation Cost
The final cost depends on zone count, indoor unit type, line set routing, and electrical scope. We provide a written quote before any work begins — no commitment required to get an estimate.
$6,500
Starting price for a single-zone ductless mini-split installation
10yr
Limited parts warranty on all installed Carrier, Mitsubishi & Bosch systems
1 Day
Typical installation time for a single-zone system
Multi-zone systems are priced based on zone count, indoor unit type, and line set routing. 3-year labor warranty included; extends to 5 years with annual maintenance plan enrollment. Financing available on qualifying installations. Pricing does not include applicable permits.
Recent Installations
A recent ductless and heat pump project completed in Berkeley.
Mitsubishi Multizone Heat Pump + Ductless Mini-Split — Berkeley, CA
Location: Berkeley, CA
Equipment: Mitsubishi multizone heat pump · Aprilaire air handlers
System: Ducted high-efficiency heat pump for the main house · ductless mini-split for the in-law unit · MERV 13 filtration · solar-paired
The customer wanted air conditioning for both the main house and the in-law unit, paired with a new solar install. Main house: a multizone Mitsubishi heat pump with custom ductwork and Aprilaire air handlers — MERV 13 filtration throughout. In-law unit: a ductless mini-split with its own air handler and programmable thermostat. The outdoor line sets were routed under the deck.
Common Questions
Frequently Asked Questions
How much does ductless mini-split installation cost in Berkeley?
Aarvaks ductless mini-split installation starts at $6,500 for a single-zone system. Multi-zone systems — where one outdoor unit powers two to five indoor units — are priced based on zone count, indoor unit type, and line set routing. Written quote provided before any work begins. Call 510-848-5010 or book online for a free estimate.
What factors affect the cost of ductless mini-split installation?
Three variables drive most of the cost variation: (1) Zone count — one outdoor unit powering four indoor units costs more than a single-zone system. (2) Indoor unit type — standard wall-mounted units cost less than ceiling cassette or concealed ducted configurations. (3) Electrical work — if your panel requires a new dedicated circuit or doesn’t have available capacity, that adds to the scope. We assess all of these during the estimate visit and include them in the written quote before any work begins.
Can I install a ductless mini-split myself?
Handling refrigerant requires an EPA 608 Universal certification — federal law prohibits unlicensed refrigerant work regardless of system size. In Berkeley and most East Bay jurisdictions, mini-split installation also requires a permit that only a licensed HVAC contractor (C-20) can pull. Installing without a permit voids the manufacturer warranty and creates liability on resale. Pre-charged DIY ductless mini-split kits exist — they use push-connect fittings that avoid refrigerant handling — but Carrier, Mitsubishi, and Bosch don’t manufacture them. Aarvaks holds CSLB License #1146520 and EPA 608 Universal certification.
How long does ductless mini-split installation take?
Most single-zone ductless mini-split installations are completed in one day. A multi-zone system — connecting multiple indoor units to one outdoor unit — typically requires more time depending on zone count and line set routing complexity. If electrical panel work is required, we’ll include an estimated timeline in the written quote before the job begins.
What does ductless mini-split installation labor cost?
Labor cost varies based on line set routing complexity, wall penetration difficulty, and whether electrical panel work is required — adding a dedicated 240V circuit adds labor time compared to a straightforward installation. Aarvaks provides a written itemized quote that separates equipment from labor and materials so you can see both figures before any work begins. The $6,500 starting price for a single-zone installation includes equipment, labor, and all materials — no separate labor charge is added at the end. Call 510-848-5010 or book online for a free itemized estimate.
What’s the difference between a single-zone and multi-zone ductless mini-split?
A single-zone system pairs one outdoor unit with one indoor unit — it heats and cools one room or open space. A multi-zone system connects one outdoor unit to two, three, four, or five indoor units in separate rooms, each with independent temperature control. Multi-zone is the right choice for whole-home comfort without ductwork. Single-zone is right for one room, a room addition, a converted garage, or an ADU. We recommend the configuration based on your floor plan during the estimate visit.
Are there tax credits or rebates for ductless mini-split installation in Berkeley?
Not the federal tax credit. The Section 25C credit, 30% of the cost up to $2,000 for a qualifying heat pump, covered improvements made through December 31, 2025, so it does not apply to systems installed in 2026. Local utility rebate rules vary by program, and we identify which apply to your system during the estimate process. See current East Bay rebates.
Ready for a Written Estimate?
Full site assessment, equipment recommendation, and itemized quote — no commitment required. Aarvaks installs Carrier, Mitsubishi, and Bosch ductless mini-splits throughout Berkeley and the East Bay.