Ductless Mini-Split in Lake Oswego, OR
Many homes around the lake were built before 1980 with original undersized ductwork that struggles to feed a modern variable-speed heat pump — duct sealing or upsizing is often the quiet half of the install.
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Ductless Mini-Split · Lake Oswego
Mitsubishi Diamond Contractor: multi-zone heat & cool for additions, basements, and ductless homes.
Lake Oswego ranges from 1940s lakefront cottages and 1970s First Addition homes to large 1990s–2000s estates on Mountain Park and out by Westlake.
Many homes around the lake were built before 1980 with original undersized ductwork that struggles to feed a modern variable-speed heat pump — duct sealing or upsizing is often the quiet half of the install.
We're 15 minutes from our Oregon City shop, so our trucks roll through Lake Oswego most days of the week.
Why Lake Oswego chooses us
Local crew, real credentials, transparent pricing.
Manufacturer-trained
Trane Comfort Specialist + Mitsubishi Diamond Contractor + Energy Trust of Oregon Trade Ally — all three manufacturer-recognized credentials.
Licensed + bonded
Oregon CCB# 247087, BBB-accredited, fully bonded and insured. Permits pulled on every install.
15 minutes from Lake Oswego
Our shop in Oregon City is a short drive. Trucks dispatched from the closest crew.
Honest, flat-rate quotes
No upsell theater. Quotes locked before work starts. We tell you straight when a repair beats replacement.
How ductless mini-split works
What a ductless mini-split job looks like in Lake Oswego.
Ductless mini-splits add heating and cooling to spaces a central system can't reach: additions, finished basements, garages, ADUs, and homes without ductwork. A single outdoor unit can run up to 8 indoor heads, each independently controlled.
We're Mitsubishi Diamond Contractors, a designation Mitsubishi limits to a small number of installers per market. Diamond installs come with a 12-year manufacturer parts and compressor warranty (twice the standard 7-year).
Hyper-Heat technology runs efficiently down to -13°F, well below anything this region sees. Indoor heads run as low as 19dB, quieter than a library, so bedrooms and home offices stay quiet.
Ductless Mini-Split questions Lake Oswego homeowners ask
- Yes — we cover every ZIP in Lake Oswego (97034, 97035) and the surrounding Clackamas County area. 100% Satisfaction Guaranteed on every job.
- We're 15 minutes from our Oregon City shop, so trucks are rolling through Lake Oswego most days of the week. Same-day diagnosis on most ductless mini-split calls.
- Pre-1980 lakefront homes with undersized return air and tight crawlspaces that complicate heat-pump retrofits.
- Single-zone installs typically run $5,500–$9,000. Multi-zone systems run $9,000–$22,000 depending on the number of indoor heads. Energy Trust + IRA incentives often knock several thousand off the final number.
- No. Mitsubishi indoor heads run as low as 19dB. The outdoor compressor sits well below normal AC noise levels.
- Absolutely. Single-zone installs are common for bedrooms, home offices, sunrooms, and ADUs. We can also start with one zone and add more later.
Written by Jason Morris, Co-Founder
Started in HVAC at A-Temp in 1994 · CCB#247087
Lake Oswego homeowners
Free in-home estimates across Lake Oswego.
Tell us what's going on. Same-day diagnosis on most ductless mini-split calls in Lake Oswego.
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