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Ameristar Construction in Van Nuys, CA | Mason Remodeling Co Los Angeles
We provide independent Ameristar construction service across Van Nuys, from roof repair and replacement to metal roofing and RTU curb adapters on the area’s older homes. What makes our Ameristar work different here is simple: we know how the brand performs on the specific houses Van Nuys was built with, not just what the spec sheet says. If your Ameristar rooftop unit is leaking at the curb or your Silver Series condenser is struggling through a heat wave, call (213) 632-5711 for a straight answer and a free estimate.
Why Van Nuys Residents Choose Us for Ameristar Service

Isaac Pruett grew up in the San Fernando Valley, and he’s spent enough weekends on Roscoe Boulevard rooftops to know that a 1958 curb adapter doesn’t fail the same way a 2015 one does. That’s the level of familiarity we bring to every Ameristar job in Van Nuys. We stock the OEM gaskets, control boards, and compressor parts that most Van Nuys General Contractor firms have to order and wait on. And because we work this neighborhood every week, we can usually diagnose an Ameristar failure by the block you live on before we even lift the unit. Our crews understand what the long dry spells, Santa Ana dust, and short winter downpours do to rooftop package units and split condensers sitting on sandy-loam patios.
Every tech who shows up at your door is background-checked, identity-verified, and arrives in a clean marked uniform with a photo ID badge. You’ll get their name and photo before they arrive. We call it the Threshold Standard, and we don’t waive it. We also put every price in writing before work starts, and every completed job carries a 365-Day Done Right Promise: if it’s not right within a year, we make it right at no cost.
Styles & brands we work with







Common Ameristar Construction Problems We Solve in Van Nuys
- Rusted curb adapters on 1950s built-up roofs. The original wood nailers under many Van Nuys ranchers have been soaking up decades of winter rain and Santa Ana-driven dust. The gasket degrades, the wood rots, and water finds the seam between the unit and the roof deck. We rebuild the curb with pressure-treated lumber and reseal with OEM Ameristar gaskets.
- Condensate pan corrosion on Silver Series rooftop package units. Van Nuys’s long dry spells mean maintenance gets skipped. When the rains finally come, a corroded pan overflows and stains the ceiling below the curb opening. We replace the pan, flush the drain line, and reset the unit with proper slope.
- Coil fouling on M4 split-system condensers. Sandy-loam patios are the norm across Van Nuys, and fine grit packs into condenser coil fins. During 100°F+ heat waves, the unit can’t reject heat, head pressures climb, and the compressor shuts off on thermal overload. We clean coils and correct clearance and airflow so the system can breathe.
- Frozen evaporator coils in horizontal attic installations. Classic Series coils above 1960s minimal traditional homes often sit on undersized original ductwork. Restricted airflow freezes the coil during the first fall heat. We correct the duct sizing and airflow before recommending any equipment change.
- Leaks at the unit-to-roof joint on low-slope composition shingle roofs. Van Nuys has block after block of 4-in-12 roofs with no attic ventilation. Heat bakes the shingles and flashing, and the expansion-contraction cycle cracks old sealant around Ameristar curb adapters. We strip, reseal, and flash the seam properly.
Ameristar Service in Van Nuys: What Local Conditions Mean for Your Equipment
Van Nuys has an unusually high concentration of 1950s minimal traditional homes with original 4-in-12 composition shingle roofs and no attic ventilation. That creates hot, dry attic conditions you won’t find to the same degree in Sherman Oaks or North Hollywood, where housing stock is more mixed and attics are often larger. For Ameristar Silver Series rooftop package units sitting on curb adapters, that heat shortens capacitor life, bakes wire insulation, and accelerates gasket hardening. If you own one of these ranchers, your rooftop unit is running hotter than the same model would two miles south. We factor that in when we size replacements and when we tell you whether a repair is worth the money. It’s not scare tactics. It’s what the thermometer and the roof deck tell us.
Ameristar Models & Products We Service in Van Nuys
We work on the Ameristar Silver Series, Classic Series, and M4 Series lines, plus the Rooftop Unit (RTU) curb adapters that connect them to the roof. For newer units under warranty, we default to OEM Ameristar compressors, control boards, and curb gaskets to keep your coverage intact. For out-of-production Silver Series parts, we source proven aftermarket equivalents with identical dimensions. We only recommend full replacement when a compressor fails on a unit over 12 years old or when a curb adapter leak has damaged the roof deck enough to require structural repair. We also provide roof repair, roof replacement and installation, and metal roofing as part of our broader Ameristar sales & service capability. That’s the advantage of calling a contractor who handles the unit and the roof it sits on.
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AfterAmeristar Service Pricing in Van Nuys

Here’s what Ameristar-related roofing and curb work typically runs in Van Nuys. These are line-item ranges, not final quotes. Your exact price depends on roof accessibility, curb condition, deck damage, and whether we’re repairing or replacing.
| Service | Typical Price Range |
|---|---|
| Roof Repair | $400 – $1,800 |
| Metal Roof Installation | $15,000 – $40,000 |
| Roof Replacement | $8,000 – $20,000 |
Every estimate is free and written, with no verbal numbers that grow on the final bill. Call (213) 632-5711 to have us look at your Ameristar unit and the roof around it. You’ll know the price before any tool is unpacked.
Serving Van Nuys, CA - Our Local Coverage Area
We’re based in the Van Nuys 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 – Ameristar Construction in Van Nuys
We lift the unit, remove the rotted wood nailer, and rebuild the curb with pressure-treated lumber before installing a new OEM Ameristar gasket and flashing the seam with high-temperature peel-and-stick membrane. If the rot extends into the roof deck, we repair that structure first, and the price reflects the additional carpentry. Call (213) 632-5711 for a free inspection and written quote.
Yes. Tile roofs require a different curb adapter and mounting strategy than composition shingle, and we cut and flash the tile to fit the curb with a watertight seal. We’ve done this on homes throughout Van Nuys as part of our Bathroom Remodeling - Van Nuys and roofing services, and we pull any required permits before work starts. Call (213) 632-5711 to schedule a free site visit.
In most cases on Van Nuys properties, the condenser coil is packed with fine sandy-loam grit that blocks heat rejection. Head pressure climbs, the thermal overload trips, and the unit shuts down during the hottest part of the day. We clean the coil, check refrigerant charge, and correct clearance so airflow is restored. Call (213) 632-5711 for a diagnostic visit.
If the unit is under 12 years old and the coil is replaceable, we repair it with an OEM-compatible coil and recharge the system. If the compressor has failed on a unit over 12 years old, we recommend replacement, because the math on a new compressor doesn’t work in Van Nuys’s climate. Either way, you’ll get a written price before any work begins.
Expect to pay between $400 and $1,800 for curb rebuild and reseal work, depending on the size of the curb, access, and whether the roof deck needs repair. We lift the unit, rebuild the nailer, install a new OEM gasket, and flash everything before resetting. Call (213) 632-5711 for an exact quote. Estimates are free.
Service Areas Near Van Nuys
We serve Van Nuys and the surrounding neighborhoods, including Van Nuys service area coverage across the central Valley. Our crews also take Ameristar jobs in Ameristar service in Beverly Hills, Ameristar service in Los Angeles, plus Sherman Oaks, North Hollywood, and West Hollywood. If you’re within a short drive of Van Nuys, odds are one of our crews is already nearby.
Book Your Ameristar Service in Van Nuys Today
Know who’s coming, know what it costs, know it’s guaranteed. Call (213) 632-5711 to schedule your free Ameristar estimate in Van Nuys. We answer live, every call, every day.
Written by Isaac Pruett, Owner at Mason Remodeling Co Los Angeles, serving Van Nuys since 2004.











