Home Core Services Architect & Builder Partnerships
Design-Assist Mechanical Partner · CA C-20 #1086780

Architect, Custom Home Builder & Designer HVAC Partnerships.

Luxury custom homes and architectural remodels demand an HVAC partner who respects sight lines, ceiling heights, millwork reveals, and construction schedules. We partner directly with architects, custom home builders, general contractors, and interior designers across Westlake Village, Lake Sherwood, Malibu, Hidden Hills, Calabasas, and Beverly Hills—delivering early plan review, ACCA Manual J/S/D & Title 24 engineering, concealed air delivery, and zero-callback Phase-7 commissioning across all major equipment brands.

Manual J/S/DTitle 24 & load engineering
All BrandsVRF/VRV & inverter platforms
Phase-7Commissioning & White Glove care
Custom modern estate in Westlake Village with architectural HVAC integration by Rea's Air Conditioning and Heating
Architectural Comfort — Felt, Never Seen
Concealed horizontal air handlers, custom linear slot diffuser plenums, quiet property-line condensers, and post-handoff White Glove care.
Built for Custom Construction Teams

How We Protect Your Architecture, Schedule & Client Reputation

When mechanical routing is left as an afterthought during rough-in, ceilings get dropped, beams get notched, and homeowners complain about noisy vents after move-in. We prevent those headaches from day one.

Pre-Framing Coordination Plan Review

We mark up reflected ceiling plans (RCPs), structural joist bays, and mechanical closets before framing locks in soffit depths.

Invisible Air Delivery Millwork & Slots

Custom acoustic-lined plenums for mud-in linear slot diffusers, architectural shadow-gap returns, and concealed cabinetry air handlers.

Property-Line Acoustics Ultra-Quiet

Variable-speed inverter condensers sited in shaded mechanical wells with vibration isolation to satisfy strict Beverly Hills, Malibu, and HOA sound codes.

Post-Close Support 24/7 Telemetry

Year 1 of 24/7 remote system monitoring on connected installs plus White Glove memberships so your team never fields seasonal HVAC callbacks.

01 · Schematic & Pre-Construction Engineering

Title 24, ACCA Manual J/S/D & Reflected Ceiling Coordination

Floor-to-ceiling Western glass walls, flat roof assemblies with tight TJI joist cavities, and open-span steel framing leave zero room for guesswork. We perform room-by-room solar heat-gain calculations and coordinate trunk paths, refrigerant chases, and condensate gravity pitch directly with your architect and structural engineer.

Common jobsite friction: HVAC subcontractor arrives after framing and demands last-minute dropped soffits across a clean ceiling plane.
Rea's builder standard: Early RCP overlay coordination so slim concealed air handlers and ductwork tuck cleanly inside planned soffits and closets.
02 · Millwork, Lighting & Interior Design Integration

Mud-In Linear Slot Diffusers, Flush Sensors & Concealed Returns

Interior designers and architects work hard to keep walls and ceilings calm and uncluttered. We fabricate custom sheet-metal slot plenums aligned with recessed lighting lines, use flush architectural remote room temperature sensors instead of wall thermostat clutter, and conceal return air pathways inside millwork reveals.

Common jobsite friction: Stamped metal grilles interrupting plaster ceilings and four different plastic boxes lined up on a hallway wall.
Rea's builder standard: Frameless mud-in linear slot diffusers and remote sensors routed back to a centralized mechanical closet.
03 · Brand-Inclusive Multi-Zone & Specialty Engineering

VRF / VRV, Inverter Heat Pumps, Wine Rooms & Safe-Haven IAQ

Every custom home has unique mechanical needs. We design, install, and service all major residential and luxury HVAC platforms—including Daikin, Mitsubishi, Lennox, Trane, Carrier, and custom 3-pipe Heat-Recovery VRF/VRV systems—plus dedicated wine-cellar climate control, home gym ventilation, and automatic wildfire-smoke fresh-air lockdown.

Common jobsite friction: A single-brand dealer forcing one equipment line onto a floor plan where another platform's slim profile fits better.
Rea's builder standard: Objective equipment selection matched to cabinet clearance, static pressure, acoustic ratings, and architectural intent.
04 · Phase-7 Commissioning & White Glove Handover

Zero-Downtime Isolation Valves, Airflow Verification & Ongoing Care

On every multi-zone VRF/VRV project, we braze full-port brass isolation ball valves at each indoor unit so a single zone can be serviced without shutting down the estate. Before final sign-off, we verify static pressure, superheat/subcooling, and CFM at every register—then back the residence with Year 1 of 24/7 remote telemetry and White Glove maintenance.

Common jobsite friction: Unbalanced zones at move-in and finger-pointing when the homeowner calls the general contractor on the first 105°F weekend.
Rea's builder standard: Documented Phase-7 commissioning, homeowner walkthrough, and direct White Glove support.
Architectural & Custom Estate Execution

Built for Discerning Architects, Builders & Estate Owners

Examples of our custom residential comfort, concealed ductwork, and rooftop/canyon mechanical execution across Southern California.

Westlake Village custom modern residence at twilight
Westlake Village courtyard and spa Westlake Village open-concept living room Westlake Village custom kitchen and linear diffusers Westlake Village outdoor pavilion and guest house
Westlake Village Custom Estate

Architectural Linear Slot Delivery & Multi-Zone Comfort

Coordinated from framing through finish trim with concealed horizontal air handlers, custom sheet-metal linear slot plenums, hospital-grade filtration, and 24/7 remote system monitoring.

Linear Slot Plenums Variable-Speed Zoning Hospital-Grade Filtration 24/7 Remote Telemetry
Lake Sherwood custom estate front elevation
Lake Sherwood architectural detail Lake Sherwood exterior patio and glazing Lake Sherwood living room and millwork Lake Sherwood lakeside exposure
Lake Sherwood Custom Residence

Multi-Wing Zoning, Quiet Siting & Smoke Lockdown

Engineered for high-solar-gain lakeside exposures and whisper-quiet outdoor living areas, pairing independent room-by-room comfort with automatic wildfire-smoke fresh-air protection.

Manual J/S/D Design Concealed Air Handlers Auto Smoke Damper White Glove Handover
Architect & Builder FAQ

Common Questions from Architects, Builders & Designers

Straight answers on plan review timing, equipment platforms, linear diffuser coordination, and post-close homeowner care.

When should an architect or custom home builder bring Rea's into the project?

Ideally during schematic design or early framing coordination—before structural beams, soffit heights, lighting layouts, and mechanical well locations are locked in. Early coordination prevents unsightly dropped soffits and ensures trunk routing, linear slot diffusers, and service access fit seamlessly inside the architecture.

Which HVAC equipment brands do you specify and install for custom residences?

We are brand-inclusive and engineer around the architectural and mechanical requirements of each estate—designing, installing, and commissioning systems across Daikin, Mitsubishi, Lennox, Trane, Carrier, and custom multi-zone VRF/VRV and inverter heat pump platforms.

How do you coordinate linear slot diffusers and concealed returns with interior designers and millwork teams?

We provide exact plenum dimensions, slot widths, and return air free-area calculations early in the submittal phase, coordinating with lighting designers, drywall Plaster/Level-5 crews, and cabinetmakers so supply slots and concealed toe-kick or reveal returns disappear into the room.

What happens after final inspection and homeowner move-in?

We never hand over keys and disappear. Every custom build includes full room-by-room airflow verification, homeowner control orientation, Year 1 of 24/7 remote telemetry monitoring on connected systems, and ongoing White Glove maintenance so the builder never gets comfort callback headaches.

Where We Partner with Builders & Architects

Custom Construction & Remodel Coverage

Serving luxury custom builds and whole-home architectural remodels across the Conejo Valley, Malibu, and the Westside.

Westlake Village

91361 & 91362 · North Ranch · Lake Sherwood · Westlake Island · Country Club Estates · Three Springs · First Neighborhood · Foxmoor Hills

Quiet, even comfort, custom attic ductwork, and clean indoor air for homes and custom builds in Westlake Village, North Ranch, and Lake Sherwood.

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Malibu

90265 · Serra Retreat · Carbon Beach · Point Dume · Malibu Colony · Broad Beach · Malibu Road · Encinal Bluffs · Latigo Canyon · Winding Way

Salt-air protected systems, sunlit glass-room temperature control, and automatic wildfire-smoke protection across coastal and canyon Malibu.

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Hidden Hills

91302 & 91307 · Hidden Hills Gated Community · Long Valley Road · Round Meadow · Ashley Ridge · Bell Canyon · The Oaks

Whisper-quiet outdoor placement, custom ductwork, and whole-property climate control for main residences, guest houses, and equestrian estates.

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Calabasas

91302 · The Oaks of Calabasas · Calabasas Park Estates · Bell Canyon · Mountain View Estates · Westridge · Hidden Hills Border · Monte Nido

Fixing uneven two-story temperatures, upgrading noisy equipment, and designing custom comfort for gated Calabasas communities.

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Thousand Oaks

91360, 91361, 91362 & 91320 · Sherwood Country Club · Lake Sherwood · North Ranch · Lynn Ranch · Sunset Hills · Dos Vientos Ranch · Lang Ranch · Winding Way

Manual J/D load design, clean attic craftsmanship, and quiet variable-speed heating and cooling across Thousand Oaks.

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Agoura Hills

91301 & 91377 · Old Agoura · Morrison Ranch · Chesebro Canyon · Medea Valley · Lake Lindero · Malibu Lake

Variable-speed comfort built for canyon temperature swings, plus automatic fresh-air shutoff during smoke season.

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Oak Park

91377 · Morrison Ranch Estates · Shadow Ridge · Country Glen · Saddle Peak · Montego · Regency Hills

High-efficiency heat pump upgrades, balanced upstairs/downstairs airflow fixes, and clean indoor air for Oak Park residences.

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Beverly Hills

90210, 90211, 90212 & 90077 · Trousdale Estates · The Flats · BHPO · Bel Air · Holmby Hills · Benedict Canyon

Invisible linear slot air delivery, quiet property-line acoustics, and responsive White Glove care for Westside estates.

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By Appointment

Submit Plans or Schedule a Builder / Architect Walkthrough

Share your project location, timeline, or architectural plan set details below. Riley Rea and our engineering team will respond promptly to coordinate a plan review or site walkthrough.

Email: [email protected]

Service Area: Westlake Village, Thousand Oaks, Agoura Hills, Oak Park, Calabasas, Hidden Hills, Malibu & Beverly Hills

License: California C-20 Warm-Air Heating, Ventilating & Air-Conditioning #1086780

Have a photo of the unit, mechanical closet, or nameplate? Reply to our confirmation email with it—or send it anytime to [email protected].

Your details go directly to Riley Rea & our engineering team ([email protected])—never shared or sold.

[email protected]