Plumbing, Heating, Cooling & Water Treatment
in Sonora & Tuolumne County
One local team. Four generations. Since 1984.
From emergency plumbing repairs to high-efficiency heating, radiant floors, and clean water systems — J. Hart handles it all under one roof, with honest pricing and no runaround.
Every Service You Need — From One Local Team
That means one call, one company, and one team that knows your home or building. No call centers, no rotating subcontractors, no finger-pointing when something needs follow-up.
Straight answers, clean work, and a fix that holds up — whatever trade it takes.
Licensed & Insured Across Every Trade
CA Lic #459194 | NV Lic #77957 — Fully licensed for plumbing, HVAC, radiant heating, and water treatment work, residential and commercial.
Browse Our Services
Residential Plumbing
- Water heaters (tank & tankless)
- Leak detection & pipe repairs
- Drain cleaning & clogs
- Faucets, toilets & fixtures
- Repipes & remodels
- Emergency plumbing service
Everything your home's plumbing needs — from a leaky faucet to a full repipe.
Commercial Plumbing
- Property & tenant maintenance
- Emergency repairs
- Restroom repairs & renovations
- Backflow testing & prevention
- Grease traps (restaurants)
- Scheduled maintenance programs
Fast response and minimal downtime for offices, retail, restaurants, and multi-tenant properties.
New Construction
- Residential & commercial new builds
- Whole-house repipes
- Bathroom & kitchen remodels
- Tenant improvements
- Fire sprinkler systems
- Plan review & estimating
We work with builders, GCs, and owner-builders — plans reviewed early, inspections passed the first time.
HVAC — Heating & Cooling
- Furnace repair & replacement
- AC repair & replacement
- Heat pumps & mini-splits
- Ductwork & airflow
- Seasonal maintenance
- Bryant Factory Authorized Dealer
Same-day no-heat and no-AC service plus proper-sized installs for the Motherlode climate.
Radiant Heating
- Radiant floor design & install
- Tankless boiler systems
- Troubleshooting & repair
- Snowmelt systems
- Zone control & thermostats
- Retrofit & new construction
Comfortable, efficient heat from the floor up — designed for our elevation and built to last.
Water Treatment
- Water testing
- Whole-house filtration
- Water softeners
- Reverse osmosis (drinking water)
- UV disinfection
- Well water solutions
Cleaner, better-tasting water — systems sized for local water conditions in Sonora and the foothills.
The J. Hart Difference
- ✓Straight answers and clear options — no hidden fees
- ✓Experienced technicians who know what they're doing
- ✓Work that holds up, not quick patches
- ✓Clean, respectful service inside your home
- ✓Accredited by the Better Business Bureau, A+ Rating
How It Works
The same straightforward process for every trade we handle at J. Hart.
Tell us what's going on
Call or request service. We'll ask a few quick questions and route you to the right technician — plumbing, HVAC, radiant, or water.
We diagnose and explain your options
We find the cause, explain what we see in plain language, and give you clear repair or replacement options with honest pricing.
You approve the work before we begin
No surprises. You'll know what it costs and what's included before we start.
We fix it right, clean up, and walk you through it
We test our work, clean up the area, and tell you what to watch for and how to maintain it.
Same-Day & Emergency Service
Burst pipes, no heat in January, no AC in August, sewage backups — emergencies don't wait. Neither do we.
Call and we'll walk you through emergency shut-off over the phone if needed, then get someone to you as quickly as possible.
Quality Work Across Every Trade
A few recent jobs from across Tuolumne and Calaveras County — plumbing, HVAC, radiant, and commercial.
Serving Sonora, Tuolumne County & Calaveras County
We're based in Sonora and serve homes and businesses across Tuolumne and Calaveras County.
We know the area's homes, building types, water conditions, and climate challenges — and what works at our elevation.
Not sure if we serve your area? Give us a call: (209) 533-1978
Trusted Across Every Service We Offer
My hot water heater was leaking. Kathleen was very courteous and helpful. Within an hour I received an estimate. Jason and Ted showed up on time and i…
New to Sonora and so thankful for the referral. J Hart is the best in town, not only for plumbing but also HVAC. Brian and JD were thorough, explained…
I can not say enough about this company. From initial call through repair and completion, J Hart's entire staff are prompt, caring, and professional.…
Frequently Asked Questions
Yes. We're one local family-owned company with technicians cross-trained across all four trades. No subcontractors, no separate dispatchers — one call covers it.
Call us at (209) 533-1978 and describe what's going on. We'll ask a few quick questions and route you to the right technician. If it turns out to be a different trade than you thought, we still cover it.
Yes. We serve residential customers, commercial properties, property managers, and general contractors throughout Tuolumne and Calaveras County.
We're based in Sonora and serve Tuolumne County (Twain Harte, Columbia, Jamestown, Tuolumne, Mi-Wuk Village, Pinecrest, Groveland, Chinese Camp, Don Pedro, Sierra Village) and Calaveras County (Angels Camp, Arnold, Copperopolis, Murphys, Avery, San Andreas, Vallecito).
Yes. We offer same-day service for urgent issues during business hours and emergency response for serious problems like burst pipes, sewage backups, no heat, or no AC.
Yes. CA Lic #459194 and NV Lic #77957 — fully licensed and insured for residential and commercial work across plumbing, HVAC, radiant heating, and water treatment.
Yes. For larger projects like water heater replacements, system installs, repipes, or remodels, we provide written estimates. For smaller repairs, we quote the work after diagnosing the problem. Our service call fee is a $185 flat fee within 30 minutes of Sonora (covers the diagnostic and first half-hour of work).
Since 1984 — four generations of the Hart family have run the shop out of Sonora. The services have expanded over the decades, but the approach hasn't changed: honest pricing, quality work, and a team that stands behind every job.
Ready to Schedule?
We'll Call You Back Fast.
Fill out the form and we'll reach out to confirm your appointment. No holding, no runaround — just a real person who knows your trade area.
- Same-day appointments available Mon–Fri
- Upfront pricing — no surprises after the fact
- CA Lic #459194 · NV Lic #77957
- Hours: 7:30 AM – 4:00 PM, Mon–Fri