Commercial Water Heater Installation & Repair
Local Plumbing — Commercial Hot Water Specialists for Marin, Sonoma & Napa
Local Plumbing installs, services, and repairs commercial water heating systems for wineries, restaurants, commercial kitchens, hotels, apartment buildings, retail properties, and industrial facilities.
We work with:
- High-capacity tank water heaters
- Commercial tankless banks (Navien, Rinnai)
- Large storage boilers
- Recirculation loop systems
- Mixing and tempering valves
- Booster pump systems
- Indirect water heaters
- Hydronic hot water systems
From winery production floors to tasting rooms, from commercial kitchens to multi-unit residential buildings — if you rely on large volumes of hot water, we make sure your system stays running.
Who We Serve
Wineries
Hot water is critical for sanitizing tanks, barrels, crush pads, bottling lines, and production equipment. We work with wineries throughout Sonoma, Petaluma Gap, Carneros, and Napa.
Restaurants & Commercial Kitchens
High recovery, high-temperature hot water for dish lines, prep sinks, and sanitation.
Hotels & Hospitality
Central hot water systems, mixing valves, storage tanks, recirc loops, and tankless banks.
Multi-Unit & HOA Buildings
Shared domestic hot water systems, large storage heaters, pump systems, annual servicing.
Industrial & Manufacturing
Process hot water, boiler-fed hot water, high-capacity applications.
Office & Retail
Tank and tankless systems for employee restrooms, break rooms, and tenant spaces.
If your business relies on dependable hot water, we’re your commercial partner.
Commercial Water Heater Systems We Install & Service
Commercial Tank Water Heaters
- 75–100+ gallon gas water heaters
- High BTU recovery models
- AO Smith, Bradford White, Rheem, State
- Perfect for restaurants, small hotels, and multi-tenant buildings
Commercial Tankless Systems
- Navien rack systems
- Rinnai commercial banks
- Noritz, Takagi, Rheem commercial units
Best for wineries and restaurants that need unlimited hot water and fast recovery.
Commercial Boilers + Storage Tanks
- Lochinvar, HTP, Triangle Tube, IBC, Laars
- High-demand hydronic systems
- Indirect storage tanks for huge volume needs
Recirculation Pump Systems
- Grundfos, Taco, Armstrong
- Keeps hot water instant at every fixture
- Essential for larger buildings and wineries
Mixing & Tempering Valves
- Caleffi, Honeywell, Watts
- Commercial code requirement
- Maintains safe and consistent temperatures
Water Heater Boosters & High-Temperature Systems
- For dish lines, sanitation requirements, and winery operations
Whatever your building or process requires, we can design and install it.
Common Commercial Hot Water Problems We Fix
- Inconsistent or no hot water
- Slow recovery time during peak demand
- Leaking or failed commercial tanks
- Tankless units shutting down or throwing codes
- Flow or recirculation problems
- Failed mixing valves or thermostatic controls
- Pump failures
- Scale and mineral buildup
- Gas supply issues
- Venting and combustion problems
- Boilers not communicating with storage tanks
- Hot water shortages during production or dinner rush
If your business cannot afford downtime, we’re the company to call.
Specializing in Wineries
Commercial Water Heating for Wine Production
We understand the unique hot water demands of wineries:
- Barrel washing
- Tank sanitation
- Crush pad cleanup
- Bottling line sanitation
- High-temperature washdown
- Multi-point high-flow demands
- Outdoor installations
- Hard water challenges
We frequently install Navien and Rinnai tankless rack systems for wineries because:
- They deliver unlimited hot water
- They scale easily with demand
- They can be serviced quickly without shutting down the entire system
- They are efficient and compact
- They handle high flow rates better than traditional tanks
We also service and install 100+ gallon commercial storage heaters for wineries that prefer heavy-duty hot water storage.

Commercial Water Heater Installation Process
✔ System sizing & engineering
We size systems based on peak load, fixture count, production demand, and recovery expectations.
✔ Gas and venting evaluation
Commercial tankless banks require larger gas supply and correct venting.
✔ Recirculation system design
Ensures consistent hot water throughout large buildings.
✔ Code-compliant upgrades
California plumbing code, backflow, expansion tanks, seismic bracing.
✔ Commercial-grade filtration
Essential for preventing scale damage in tankless units.
✔ Startup, commissioning & training
We test, tune, and verify proper temperature and flow settings.
✔ Maintenance plans available
Annual or biannual commercial servicing for wineries, restaurants, and HOAs.
Commercial Water Heater Replacement Cost
(2025 typical ranges — varies by size, gas supply, and system design)
Commercial tank water heater (75–100+ gallon):
$8,500 – $16,500+
Commercial tankless rack system:
(single or multi-unit)
$9,500 – $18,000+
Commercial boiler + indirect tank:
$17,000 – $35,000+
Recirculation pump system:
$1,200 – $4,800+
Commercial mixing valve replacement:
$950 – $1,800+
Commercial descale / flush:
$350 – $850 per unit
We provide detailed, written estimates based on your building and hot water requirements.
Real Commercial Projects
Sonoma Winery — Navien Commercial Rack System
Replaced aging 100-gallon tanks with a 4-unit Navien rack.
Results: Instant hot water, lower gas usage, faster sanitation cycles.
Total: $29,800
Petaluma Restaurant — Commercial AO Smith 100-Gallon Install
Issue: Slow recovery during dinner rush
Fix: Installed high-recovery commercial tank + new recirc pump
Total: $9,900
San Rafael Multi-Unit Building — Recirculation System Failure
Cause: Failed Grundfos pump
Fix: Installed new ECM commercial pump + isolation valves
Total: $2,850
Napa Hospitality Property — Rinnai Tankless Multi-Unit Bank
Designed and installed 3-unit Rinnai bank for guest suites
Total: $19,600
Service Areas
We serve commercial clients in:
Marin County: San Rafael, Mill Valley, Tiburon, Larkspur, Sausalito, Fairfax, Corte Madera, San Anselmo, Novato
Sonoma County: Petaluma, Cotati, Rohnert Park, Sonoma, Glen Ellen, Penngrove, Santa Rosa
Napa County: Napa, Yountville, American Canyon
Commercial Water Heater FAQ
Do you handle emergency commercial water heater replacements?
Yes — we prioritize commercial hot water outages and can often install same day.
How long do commercial water heaters last?
Tank systems: 8–12 years
Tankless commercial banks: 12–20 years
Boilers + indirect tanks: 15–25 years
Can you service multiple tankless units linked together?
Yes — we frequently work on Navien and Rinnai multi-unit rack systems.
Do wineries need special filtration or conditioning?
Yes — scale kills tankless units. Treatment extends lifespan and prevents downtime.
Do you offer maintenance plans for businesses?
Yes — annual or biannual commercial maintenance plans available.
Book Commercial Water Heater Service
Local Plumbing is the North Bay’s trusted commercial hot water provider.
- Winery specialists
- Certified Navien & Rinnai installers
- Large tank & commercial boiler expertise
- Recirculation system design
- Fast emergency service

Call, text, or request an estimate — keep your business running with reliable hot water.
