Fast, Reliable Heat Pump & Mini Split Across North Hills
Heat pump and mini-split repair in North Hills typically runs $150–$650, while a full heat pump installation ranges from $3,500–$7,500. Most North Hills homes we service get same-day diagnostics, and our Heat Pump & Mini Split team carries parts for Carrier, Trane, Lennox, and American Standard to avoid second trips.
We’re Stonegate Heating & Air California, and we’ve been working the San Fernando Valley long enough to know that North Hills isn’t like the rest of Los Angeles. While Santa Monica stays in the 70s, you’re hitting 105–110°F in July, and your attic is a furnace. That matters for heat pumps. It matters for ductwork. It matters for how long your system lasts and how much you pay to run it. We’re based in Sacramento with 16 years in business, nearly 500 verified reviews at 4.7 stars, and owner Jason Trent still works as Field Supervisor on jobs. Call us at (855) 467-1888 for a free estimate.
Why Stonegate Heating & Air California Is North Hills’s Preferred Heat Pump & Mini Split Company
North Hills homeowners don’t have patience for vague arrival windows or technicians who’ve never seen a 1950s ranch with post-quake retrofit ductwork. We’ve earned that patience through repetition. Our 499 verified reviews at a 4.7-star average include repeat calls from Valley customers who started with us on an emergency repair and stayed for installation.
Jason Trent doesn’t delegate from an office. He’s Field Supervisor, which means he’s on job sites, including the ones we run in the 91343 and 91393 ZIP codes. That accountability matters when you’re replacing a system that hasn’t been touched since the Clinton administration.
We know the local failure patterns. The 1994 Northridge earthquake rebuild wave dumped thousands of new heat pumps and split systems into North Hills homes, and those units are now 28–30 years old. Compressors are seizing. Capacitors are failing. Flex duct is crumbling in 150°F attics. We’ve seen it enough to diagnose fast and quote accurately.
Our parts inventory covers nine major brands, so we’re not telling you to wait two weeks for a Lennox control board or a Trane reversing valve. That alone saves North Hills customers a return visit.
Our Heat Pump & Mini Split Services in North Hills
Heat Pump Repair
Heat pump repair in North Hills usually means one of three things: a compressor that’s finally given out after three decades, a refrigerant charge that’s never been checked since 1996, or electrical components cooked by attic heat. We diagnose on the first visit and stock parts for Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Typical repair range: $150–$650.
Heat Pump Installation
Full heat pump installation in North Hills runs $3,500–$7,500 depending on tonnage, electrical upgrades, and whether we’re replacing ductwork baked brittle in your attic. We size for your actual load, not the label on the old unit. That matters here more than most places because 110°F days and 150°F attics punish undersized systems. We install systems that can handle the San Fernando Valley’s inland extremes.
Mini Split Install
North Hills has a meaningful stock of garage conversions, ADUs, and additions that never got ducted. A ductless mini split is often the only practical solution. We size and install single-zone and multi-zone systems, running line sets through low-slope ranch eaves or stucco walls. No ductwork, no attic heat gain, direct conditioning where you need it.
Mini Split Repair
Ductless systems fail differently than central heat pumps. Refrigerant leaks at flare fittings, clogged condensate drains from Valley dust, and failed inverter boards are what we see most. We carry diagnostic tools and replacement boards for the major brands, and we know which North Hills installations have the line sets buried in walls versus exposed runs.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in North Hills
We maintain active certification and parts access for Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For North Hills customers, that means no dead ends. We’ve had homeowners call us after another company said, “We don’t work on that brand.” That doesn’t happen here. Our Sacramento-based warehouse stocks common boards, capacitors, and refrigerant components, and we coordinate same-day or next-morning parts runs to the Valley for less common items. Whatever brand you have, we can fix it or replace it without the runaround.
Common Heat Pump & Mini Split Problems We See in North Hills Homes
- Compressor failure on aging post-quake systems. That 1996 heat pump was new when Clinton was president. Now it’s 28–30 years old, the refrigerant charge has never been verified, and the compressor is running on borrowed time. We see these failures clustered in the 91343 ZIP more than anywhere else in the Valley.
- Cracked flex duct joints in 150°F attics. North Hills ranch homes have low-slope roofs with minimal ventilation. Attic temperatures exceed 150°F on peak days, and the flex duct installed during post-quake rebuilds has become brittle. Conditioned air leaks into the attic before it ever reaches your rooms.
- Original capacitors and electrical components failing from heat stress. Capacitors rated for 10 years don’t last 30 in a North Hills attic. We regularly find original parts still in service, swollen or leaking, causing hard starts and premature compressor death.
- Never-serviced systems with degraded efficiency. Homeowners who got a “new” system in 1996 assumed it was fine and deferred maintenance for decades. The result is a heat pump drawing 40% more power than it should, with refrigerant low, coils fouled, and airflow choked by collapsed duct.
Pricing for Heat Pump & Mini Split in North Hills, CA
We’re transparent about numbers because North Hills homeowners research before they call. Here’s what we see in this market:
| Service | Typical Range in North Hills |
|---|---|
| Heat Pump Repair | $150–$650 |
| Heat Pump Installation | $3,500–$7,500 |
| Tune-Up / Maintenance | $80–$200 |
What moves you within these ranges? Tonnage, electrical panel capacity, duct condition, and whether we need crane access for a rooftop package unit. The 1990s post-quake installs often used smaller electrical service and thinner duct that won’t support modern efficiency standards. We quote everything upfront, no add-ons after we start. Call (855) 467-1888 for a free estimate.
We Also Serve Cities Near North Hills
Our Valley coverage includes Northridge to the west, Van Nuys to the south, Valley Glen to the southeast, and San Fernando to the north. Each has different housing stock and climate exposure, but the same owner-supervised service standard. If you’re in the 91343 or 91393 ZIP codes, you’re our nearest North Hills call.
Serving North Hills, CA — Our Local Coverage Area
We’re based in the North Hills 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 — Heat Pump & Mini Split in North Hills
North Hills heat pumps fail faster because of extreme inland heat and a unique concentration of 1990s post-earthquake systems now aging out simultaneously. Attic temperatures in low-slope ranch roofs exceed 150°F, cooking capacitors and cracking flex duct, while coastal LA neighborhoods stay 20–30 degrees cooler. The 1994 rebuild wave also means North Hills has more 28–30 year-old systems than neighboring Valley cities that weren’t hit as hard. Call (855) 467-1888 if your system is from that era — we’ll tell you honestly whether it’s worth saving.
If your heat pump is from 1996, replacement is usually the smarter money unless the repair is minor and the system has been maintained. A 28–30 year-old unit in North Hills has exceeded design life by triple, and original capacitors, refrigerant charge, and ductwork are all suspect. We assess actual condition, not just age. If the compressor is failing and the duct is crumbling, we’ll show you both numbers and let you decide. Free estimates: (855) 467-1888.
Cracked flex duct joints and collapsed insulation are the norm in North Hills attics that hit 150°F. The 1990s rebuild used standard flex duct that degrades faster in extreme heat, and many systems have never been inspected. We use thermal imaging and pressure testing to find leaks before we quote replacement. Sealed ductwork can improve efficiency 20–30% in these conditions.
North Hills requires larger capacity and better attic insulation than coastal LA because design temperatures here reach 105–110°F versus 80–85°F at the beach. An undersized heat pump runs continuously, fails faster, and never reaches setpoint on peak days. We perform Manual J load calculations using actual local conditions, not generic LA data. Sizing right the first time prevents callbacks and early replacement.
Yes, we repair and replace heat pumps and mini splits installed in North Hills garages, which are common for post-quake rebuilds and ADU conversions. Garage installations face dust, temperature swings, and clearance issues that indoor units don’t. We check refrigerant lines for abrasion, verify condenser airflow isn’t blocked by storage, and ensure electrical meets current code. Call (855) 467-1888 to schedule — estimates are free.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving North Hills and the San Fernando Valley with 16 years of owner-supervised HVAC service.