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Bellingham Heating & Cooling — Bellingham's Energy Savings Team
Wall-mounted ductless mini split head in a living room with the lineset routed through the exterior wall

Installed price · verified 2026-09-04

One-zone mini split cost, including the electrical nobody quotes

$2,500–$6,000 Installed, one indoor head on one outdoor unit. Wall-mounted heads sit at $2,500–$5,000 per zone, floor-mounted at $3,000–$5,000, ceiling cassettes at $3,500–$6,000 and concealed-duct units at $4,000–$7,500, all per zone. A locally advertised single-zone special of about $2,200 sits below this range because it excludes electrical., before rebates. Here is what decides where in that range your house lands.

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One-Zone Mini Split Cost — and What the $2,200 Special Leaves Out in Bellingham

Installed, one indoor head on one outdoor unit. Wall-mounted heads sit at $2,500–$5,000 per zone, floor-mounted at $3,000–$5,000, ceiling cassettes at $3,500–$6,000 and concealed-duct units at $4,000–$7,500, all per zone. A locally advertised single-zone special of about $2,200 sits below this range because it excludes electrical.

Simple job
$2,500
Complex job
$6,000

Installed price before rebates — equipment, labour, materials, permit and startup. The federal §25C tax credit contributes $0 in 2026: it terminated for anything placed in service after December 31, 2025.

Range benchmarked 2026-09-04 against published local pricing. Your quote is fixed before work starts — no hourly surprises.

  • WA L&I #BELLIHC808NM Active registration — verify it with the state
  • $30,000 bonded Surety bond on file with L&I
  • $1,000,000 insured General liability coverage
  • Local since 2020 Owner-operated in Whatcom County
  • We pull the permit City of Bellingham or Whatcom County, and we meet the inspector

What moves your number

Most impactful first. These are the questions we ask on the phone, and they are the reason a range exists at all.

The electrical the special excludes
$250–$900 for a dedicated circuit, or $1,300–$2,500 if the panel has to go
A local competitor advertises a single-zone system at roughly $2,200 with electrical not included, and that phrase is doing a great deal of work. HomeGuide puts a new dedicated circuit at $250 to $900, which is the good case: a house with 200-amp service and open breaker spaces. In a pre-1960 house with an original 100-amp panel and no spares, the licensed electrical contractor is looking at a $1,300 to $2,500 panel upgrade or a $500 to $1,700 subpanel before the mini split has a home.
Head style and mounting height
a ceiling cassette or floor console adds $500–$2,500 per zone over a wall head
HomeGuide prices wall-mounted heads at $2,500 to $5,000 per zone, floor-mounted at $3,000 to $5,000 and ceiling cassettes at $3,500 to $6,000. Wall heads are cheapest and fine in most rooms. Floor consoles earn their premium in older houses with tall windows and no clear wall space above them, and cassettes make sense in a vaulted addition where a wall head would blow across the ceiling.
Head capacity and where the room sits in the house
roughly $500–$1,500 between a three-quarter-ton and a one-and-a-half-ton head
HomeGuide’s size table runs $3,000 to $4,200 installed for a 9,000 BTU head and $4,500 to $6,500 for an 18,000 BTU unit. A single head heating an open main floor in a 1910 house with single-pane windows needs more capacity than the same head in a mid-2000s bedroom. Note also that PSE requires at least three-quarters of a ton in heating mode for its ductless rebate, so the smallest heads can disqualify the whole project.
Line set length and routing
about 15 feet is included; every extra foot and every finished wall costs more
Single-zone jobs are the ones where routing decides the price, because there is nothing else in the scope to hide it. Head on an exterior wall, condenser directly below, done in a day. Head on an interior wall with the only condenser pad twenty-five feet away around the corner, and you are paying for line set, a wall chase or a line-hide run, and drywall patching.
Corrosion protection near the water
a small equipment premium, worth taking within a few blocks of the bay
Salt air costs an unprotected outdoor unit two to four years of life, and a single-zone system has exactly one outdoor unit to lose. Within a few blocks of saltwater we specify corrosion-treated coils and stainless hardware. The premium is small measured against replacing the condenser early.

What appears on a real quote

Line by line, the way we scope it. If a quote you are holding is a single lump sum, this is the list to ask them to break out.

One-Zone Mini Split Cost — and What the $2,200 Special Leaves Out quote line items and typical ranges in Bellingham, WA
Line item Typical range What it is
Single-zone equipment, outdoor unit plus one head $1,100–$5,600 by brand, equipment only HomeGuide brand table: Daikin $1,100–$5,600, Mitsubishi Electric $1,400–$4,800, Fujitsu $1,300–$4,700.
Wall bracket or ground pad included in an installed quote —
Line set to about 15 feet, plus line-hide cover included; longer runs quoted on the walk-through —
Dedicated circuit and disconnect by a licensed electrical contractor $250–$900 HomeGuide. This is the line the $2,200 advertised special leaves off.
Panel upgrade or subpanel when the existing panel is full $1,300–$2,500 for 200 amps; $500–$1,700 for a subpanel HomeGuide.
Electrical permit, where the electrical contractor pulls one $50–$350 HomeGuide.
Condensate line included where gravity drainage works —
Mechanical permit and inspection per the governing jurisdiction’s fee schedule —
Evacuation, charge verification and commissioning included —
Diagnostic trip charge $89.99, refunded as company credit if you accept the bid —

Line items are quoted against your house, not averaged. Your written quote is fixed before work starts.

Three worked examples

Same work, three different houses. The arithmetic runs from the installed price, through the programs that apply, to what you write a cheque for.

One head in the main living area of a 1970s baseboard-heated Bellingham rambler, 200-amp panel with two spare spaces, twelve-foot line set

Installed price
$4,500
Rebates applied
  • PSE electric resistance to heat pump conversion: $1,500
  • Daikin ductless instant rebate: $450–$750
  • Federal §25C: $0
You pay
$2,250–$2,550

This is the honest version of the $2,200 headline: not the sticker price, but what a real single-zone project can net down to once the PSE and Daikin rebates land. The federal credit adds nothing in 2026.

One head in a 1940s Bellingham house with an original 100-amp panel, no spare breaker spaces

Installed price
$4,300 mechanical plus $1,300–$2,500 electrical panel upgrade
Rebates applied
  • PSE conversion rebate: $1,500
  • Daikin ductless instant rebate: $450–$750
  • Federal §25C: $0
You pay
$3,350–$4,850

Same equipment, same labour, $1,300 to $2,500 more because of the panel. Anyone quoting you a flat single-zone price without looking in your basement is quoting the first scenario and will bill you the second.

Income-qualified household, pre-1990 home, single head replacing wall heaters, routed through the Community Energy Challenge

Installed price
$4,800
Rebates applied
  • PSE conversion rebate at Efficiency Boost: $2,400
  • Community Energy Challenge ductless incentive: up to $2,000
  • Federal §25C: $0
You pay
$400–$2,400 depending on the CEC award

A single-zone project is where the income-qualified stack can very nearly cover the job. CEC states its incentives are in addition to utility rebates, and PSE reports roughly half its customers qualify for Efficiency Boost.

No example includes a federal tax credit, because there is none to include for a 2026 install. The largest single line in most of these is Puget Sound Energy's $1,500 electric-resistance conversion rebate, which is contractor-gated — PSE requires the installer to be inside its network, so ask us to confirm status for your project before you count on it.

Rebates that come off this price

  • $1,500

    Available now

    $2,400 with PSE Efficiency Boost for income-qualified households.

    Paperwork:
    We file it
    Deadline:
    No published end date — tariffed and subject to change
    Verified:
    2026-09-04 · source

  • Raises other PSE rebates

    Income-qualified

    Heat pump $1,500 → $2,400 · heat pump water heater $1,000 → $1,100 · smart thermostat $75 → $175.

    Paperwork:
    We file it
    Deadline:
    Ongoing
    Verified:
    2026-09-04 · source

  • Community Energy Challenge — moderate income

    Sustainable Connections + Opportunity Council

    Up to $2,000

    Income-qualified

    For a ductless heat pump upgrade. Weatherization incentives average roughly 45% of project cost. Stated by CEC to be in addition to utility rebates.

    Paperwork:
    The program files it
    Deadline:
    Ongoing
    Verified:
    2026-09-04 · source

  • Daikin Instant Rebates — ductless

    Daikin (administered by EGIA)

    $450–$750

    Available now

    SkyAir (RZA outdoor with FTA indoor) $750 · MXM and Aurora MXT/MXTH $500 · Aurora RXT/RXP $450 · Atmosphera $450.

    Paperwork:
    We file it
    Deadline:
    Purchase by September 30, 2026; install by October 31, 2026
    Verified:
    2026-09-04 · source

  • $0 — terminated

    Ended

    Historically 30% of cost, up to $2,000/year for heat pumps and heat pump water heaters. Gone. The One Big Beautiful Bill (P.L. 119-21, enacted July 4, 2025) accelerated its termination.

    Paperwork:
    You file it
    Deadline:
    Terminated — property placed in service after December 31, 2025 does not qualify
    Verified:
    2026-09-04 · source

Every Bellingham rebate, with the source and the date we checked it →

Run your own numbers

A range, not a quote — and the arithmetic is shown so you can check it. Every band below is a published installed price, linked at the bottom.

Sources, all checked 2026-09-04: ductless by zone, ducted in Bellingham, local aggregator range, panel upgrade, dedicated circuit, heat pump water heater. Electrical work is performed and permitted by a licensed electrical contractor — we hold a general contractor registration, not an electrical one.

The work itself

Ductless Mini Split Installation

Heat and cool the rooms you actually use, without tearing your house apart to add ductwork.

See how we do it — process, permits, equipment and timeline →

Talk it through — (360) 592-3824

One-Zone Mini Split Cost — and What the $2,200 Special Leaves Out — questions we get asked

How much is a one-zone mini split installed?
$2,500 to $6,000 for a complete installed system, with wall-mounted heads at the lower end and ceiling cassettes at the upper. Where you land inside that range is mostly decided by your electrical panel and your line set run, not by the brand on the box.
Is the ~$2,200 single-zone special advertised locally real?
The number is real and so is the exclusion printed next to it: electrical not included. That price buys the equipment and the mechanical labour. It does not buy the dedicated circuit, which HomeGuide puts at $250 to $900, and it certainly does not buy the $1,300 to $2,500 panel upgrade that a pre-1960 Bellingham house with 100-amp service often needs first.
So what does "electrical not included" cost me?
Between $250 and $2,500 in most Bellingham houses. Best case, an electrician adds a dedicated circuit to a panel with spare spaces for $250 to $900. Worst case in the older stock, the panel is full or undersized and the licensed electrical contractor replaces it for $1,300 to $2,500, or adds a subpanel for $500 to $1,700. We are not electricians; we get the electrical scope priced by a licensed electrical contractor before you sign anything.
Will one head heat my whole house?
Sometimes, and only with an open plan. A single head heats the space it can see: an open main floor with a central hallway does reasonably well, while bedrooms behind closed doors on the far side of the house do not. If you want even temperatures in bedrooms, price a multi-zone system instead of hoping a single head reaches.
Does a single-zone system still qualify for the $1,500 PSE rebate?
Yes, if the head is in the main living area and the home’s existing primary heat is electric resistance. PSE explicitly excludes bedroom-only installations and requires a fully ductless AHRI-certified inverter system of at least three-quarters of a ton in heating mode. PSE also requires the installing contractor to be in its network, so ask us to confirm status for your project before counting on the money.
Can I buy the equipment myself and have you commission it?
Yes, that is a service we offer: you handle the mounting and the routing you are comfortable with, and we do the evacuation, charge verification, startup and documentation. Two warnings. A DIY-installed system is not eligible for the PSE rebate, which explicitly excludes work completed by the homeowner. And the electrical still has to be done by a licensed electrical contractor.
Do I need a permit for one head?
Yes. One head is still refrigerant work and still needs a mechanical permit, and we pull it and meet the inspector. Which office issues it depends on whether your address is inside Bellingham city limits or in unincorporated Whatcom County, which is not the same thing as your mailing address.

Get the number for your house

A range tells you whether to keep reading. Tell us about the house and we will tell you which end of it you are at, what the rebates take off, and what the written quote will say.

Or call or text (360) 592-3824. Estimates carry the standard $89.99 trip charge, refunded as company credit when you accept the bid. We do not sell or share your details.

Range benchmarked 2026-09-04 against published local pricing · All published cost ranges

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Tell us what you have now and what you want it to do. We will tell you what fits, what it costs, and which rebates you actually qualify for — before anyone comes out.

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