Furnace & heating
AC repair
Ductless mini splits
TraneSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateFast, Reliable Heat Pump Installation Across Altadena
A heat pump installation in Altadena typically runs $3,500 – $7,500 for a ductless single-zone system, and most jobs are completed in one to two days once equipment is on hand. We install and service heat pumps in every part of Altadena, from the 1920s bungalows off Lake Avenue to the mid-century ranches up toward the foothills. If you’re weighing a heat pump against another year of window units or a gas furnace that’s seen better days, call (626) 657-5344 for a written fixed price before any work starts.
Altadena’s mix of early-20th-century craftsmans, mid-century ranch homes, and newer foothill estates – many without ductwork – combined with frequent Santa Ana wind events and wildfire smoke concerns makes high-efficiency filtration, zoning, and pre-season duct sealing the defining HVAC priorities here. A heat pump sized and installed for an Altadena home has to handle hot, dry summer days and the occasional punishing wind event. The wrong setup short-cycles, spikes your electric bill, and leaves rooms uncomfortable. The right setup runs quietly, filters the air, and holds temperature when the Santa Anas push through.
Why Dalton Heating & Air Pasadena Is Altadena’s Preferred Heat Pump Installation Company
Our Heat Pump Installation team works in Altadena every week, and we know what these homes throw at you. Many were built before central air was standard. The west side of Lake Avenue is dense with 1950s tract homes on slab foundations, radiant floor heat, and no ductwork. The east side climbs toward the San Gabriels, where exposed lots catch the full force of a Santa Ana. We don’t send a crew that’s never seen these conditions. We send techs who know before they arrive whether a ducted system is even possible or whether a multi-zone mini split makes more sense.
Marco Benitez runs our operation, and he holds every job to The Garrison Standard: arrive inside the window, put the price in writing before starting, do the work by the book, leave the site clean, and stand behind the result for a full year. That’s not a marketing slogan. It’s The Garrison Code, and it’s been in place since 2003. Every repair and installation includes a written guarantee, and if a repair fails inside that year, we return at no charge. You’ll also get a live person on the phone 24/7, not a voicemail queue.
Styles & brands we work with
Geothermal Heat Pump Installation in Altadena
Geothermal Heat Pump Installation in Altadena means running a buried ground loop – either horizontal trenches or vertical boreholes – that exchanges heat with the earth instead of outdoor air. Because ground temperature stays roughly constant year-round, a geothermal system uses far less electricity on the hottest days when an air-source unit is working hardest. For Altadena properties with enough land for a loop field, it’s the most efficient option available, and it quietly sidesteps the efficiency loss that comes with extreme outdoor heat.
When the Lot Makes Sense
Larger foothill parcels with room to trench are the natural fit. A home on an eighth-acre city lot is usually a poor candidate – the loop field eats too much yard. We’ll tell you straight if your property isn’t suited.
Cost Reality in Altadena
Geothermal runs meaningfully higher than air-source equipment. You’re paying for excavation, loop pipe, and a ground-source unit. The 30% federal geothermal tax credit helps, but the payback math depends on your current utility rates and system size. We’ll run an honest comparison against a high-efficiency ductless system before you commit.
Ductless Heat Pump Installation in Altadena
Ductless Heat Pump Installation in Altadena is the answer for the hundreds of ranch homes built with radiant floor heat and no central cooling. Instead of forcing ducts through closets and ceilings, a ductless system pairs an outdoor inverter unit with slim wall-mounted heads. No attic work, no drywall cuts, no static pressure problems. One outdoor unit can serve up to four or five indoor heads, giving you zone control room by room.
Foothill Exposure and Sizing
On exposed lots with no wind shelter, we run a full Manual J load calculation before we quote. Square-footage rules of thumb don’t survive a Santa Ana. Undersized, the unit short-cycles and can’t hold temperature. Oversized, it cools without dehumidifying and costs more than it should.
Radient Slab Homes Without Attics
On the west side of Lake Avenue, many 1950s tract homes in Altadena were built with radiant floor heating and no central cooling, which means heat pump retrofits here often require creative mini-split or high-velocity systems because attic space is minimal and slab foundations preclude traditional duct runs. We installed a Daikin ductless heat pump system in a 1950s ranch on Mariposa Street near Lake Avenue, where the original radiant slab heating meant no existing ductwork. Our techs ran a full Manual J load calculation to size three indoor units for the exposed living areas, and upgraded the aging electrical panel to handle the new inverter-driven outdoor unit. The homeowner now has quiet, zoned cooling for the first time – and filtration that helps during Santa Ana wind events.
Trusted Brands We Service in Altadena
Our techs are factory-trained on Carrier, Trane, Lennox, and Goodman equipment, and we stock common parts for these brands in our local service vehicles. That means when an Altadena customer’s Goodman outdoor unit throws a fault during a heat wave, we usually have the capacitor or control board on the truck. No waiting three days for a part from a warehouse. If you already own a Trane or Lennox system, we’ll service it under the same written guarantee we offer on everything else. If you’re replacing, we’ll help you pick the brand and model that matches your home’s electrical panel, your duct situation (or lack of one), and your budget – without pushing you toward the most expensive option.
See the difference
Before
After
Before
After
Before
AfterCommon Heat Pump Installation Problems We See in Altadena Homes
- Old electrical panels from the 1950s can’t handle heat pump startup loads. Unpermitted or undersized breaker installs lead to nuisance tripping and compressor damage. We check the panel rating and service capacity before any install, and we’ll tell you if a panel upgrade is required first.
- Radiant-heated slab homes have no attic or crawl space for ducts. Inexperienced crews try to force traditional ducted systems and end up with high static pressure, poor airflow, and no real cooling. We’ll recommend a ductless or high-velocity setup instead of fighting the structure.
- Exposed foothill lots with no wind shelter punish square-footage-only sizing. A heat pump sized without accounting for Santa Ana wind-driven infiltration short-cycles and fails to hold temperature during extreme heat events. Our sizing accounts for orientation, wind exposure, window area, and insulation – not just floor space.
- Single-pane windows and little insulation bleed conditioned air fast. Many Altadena homes from the 1920s and 1930s have original windows. A heat pump isn’t a cure for a leaky envelope. We’ll flag the worst air leaks so you get real comfort, not just colder air blowing into a drafty room.
Pricing for Heat Pump Installation in Altadena, CA
| Service | Altadena Price Range |
|---|---|
| Ductless heat pump installation (single-zone mini split) | $3,500 – $7,500 |
| Heat pump repair (capacitor replacement, refrigerant charge) | $150 – $650 |
A multi-zone ductless system serving three or four rooms runs higher than a single-zone, and a full ducted heat pump replacement lands in the upper part of that range once duct modifications are included. What moves the number in Altadena: panel upgrades, line-set runs across a slab foundation, and whether walls need reinforcement for a wall-hung outdoor unit. You’ll get a fixed, written price before we order any equipment, with no surprises added at the door. Call (626) 657-5344 for a free heat pump installation estimate in Altadena.
We Also Serve Cities Near Altadena
Our crews handle Heat Pump Installation in Altadena and the surrounding foothill communities, including Pasadena, San Marino, Sierra Madre, and San Gabriel. If you’re just over the Altadena line in any of those cities, the same written pricing, on-time window, and 365-Day Done Right Promise apply. Dispatch and scheduling are coordinated from our Los Angeles office; crews serve Altadena locally.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Heat Pump Installation in Altadena
We go ductless. These slab-foundation ranches have no attic or crawl for ducts, so a traditional ducted heat pump is the wrong tool. We size a multi-zone mini split system, mount slim indoor heads on exterior walls, and run the line sets along the outside of the house. It’s faster, cleaner, and gives you real zone control room by room. Call (626) 657-5344 and we’ll walk your specific floor plan.
Yes, if it’s sized correctly and paired with good filtration. The key is a Manual J load calculation that accounts for wind-driven infiltration, not just square footage. We also recommend high-MERV filtration or a dedicated air cleaner, because Santa Ana events carry fine particulate that a standard fiberglass filter won’t catch. Exposed foothill lots need this more than sheltered city blocks.
SEER2 is the current federal efficiency rating for heat pumps, measuring cooling output per watt of electricity under newer, more realistic test conditions. It replaced SEER in 2023. For Altadena’s long hot season and high electricity rates, a unit in the 17-20 SEER2 range usually delivers the best balance of upfront cost and operating savings. We’ll show you the numbers for your home, not just the sticker.
Often yes. Many homes here still run 100-amp panels from the 1950s or 1960s, which can’t reliably start an inverter-driven heat pump alongside your other loads. We check the panel rating and service capacity during the estimate. If an upgrade is needed, we’ll quote it as part of the written price so there are no bolt-on costs at install day.
The house decides, mostly. If your bungalow has a usable attic or crawl space, a ducted system can hide. If it’s slab-on-grade with no chases, ductless is the honest answer. We look at the structure first, then your comfort goals, then the budget. You’ll get a straight recommendation with the reasoning attached, in writing, before you spend a dollar.
Written by Marco Benitez, Owner at Dalton Heating & Air Pasadena, serving Altadena.